1 | /* |
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2 | Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved. |
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3 | |
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4 | The MySQL Connector/J is licensed under the terms of the GPLv2 |
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5 | <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors. |
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6 | There are special exceptions to the terms and conditions of the GPLv2 as it is applied to |
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7 | this software, see the FLOSS License Exception |
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8 | <http://www.mysql.com/about/legal/licensing/foss-exception.html>. |
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9 | |
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10 | This program is free software; you can redistribute it and/or modify it under the terms |
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11 | of the GNU General Public License as published by the Free Software Foundation; version 2 |
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12 | of the License. |
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13 | |
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14 | This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; |
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15 | without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. |
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16 | See the GNU General Public License for more details. |
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17 | |
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18 | You should have received a copy of the GNU General Public License along with this |
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19 | program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth |
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20 | Floor, Boston, MA 02110-1301 USA |
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21 | */ |
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22 | package com.mysql.jdbc; |
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23 | |
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24 | import java.io.InputStream; |
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25 | import java.math.BigInteger; |
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26 | import java.sql.BatchUpdateException; |
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27 | import java.sql.DriverManager; |
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28 | import java.sql.ResultSet; |
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29 | import java.sql.SQLException; |
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30 | import java.sql.SQLWarning; |
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31 | import java.sql.Types; |
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32 | import java.util.ArrayList; |
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33 | import java.util.Calendar; |
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34 | import java.util.Collections; |
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35 | import java.util.Enumeration; |
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36 | import java.util.GregorianCalendar; |
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37 | import java.util.HashSet; |
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38 | import java.util.List; |
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39 | import java.util.Properties; |
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40 | import java.util.Set; |
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41 | import java.util.TimerTask; |
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42 | import java.util.concurrent.atomic.AtomicBoolean; |
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43 | |
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44 | import com.mysql.jdbc.exceptions.MySQLStatementCancelledException; |
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45 | import com.mysql.jdbc.exceptions.MySQLTimeoutException; |
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46 | import com.mysql.jdbc.profiler.ProfilerEvent; |
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47 | import com.mysql.jdbc.profiler.ProfilerEventHandler; |
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48 | |
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49 | /** |
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50 | * A Statement object is used for executing a static SQL statement and obtaining |
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51 | * the results produced by it. |
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52 | * |
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53 | * <p> |
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54 | * Only one ResultSet per Statement can be open at any point in time. Therefore, |
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55 | * if the reading of one ResultSet is interleaved with the reading of another, |
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56 | * each must have been generated by different Statements. All statement execute |
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57 | * methods implicitly close a statement's current ResultSet if an open one |
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58 | * exists. |
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59 | * </p> |
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60 | * |
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61 | * @author Mark Matthews |
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62 | * @version $Id: Statement.java 4624 2005-11-28 14:24:29 -0600 (Mon, 28 Nov |
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63 | * 2005) mmatthews $ |
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64 | * |
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65 | * @see java.sql.Statement |
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66 | * @see ResultSetInternalMethods |
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67 | */ |
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68 | public class StatementImpl implements Statement { |
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69 | protected static final String PING_MARKER = "/* ping */"; |
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70 | /** |
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71 | * Thread used to implement query timeouts...Eventually we could be more |
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72 | * efficient and have one thread with timers, but this is a straightforward |
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73 | * and simple way to implement a feature that isn't used all that often. |
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74 | */ |
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75 | class CancelTask extends TimerTask { |
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76 | |
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77 | long connectionId = 0; |
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78 | String origHost = ""; |
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79 | SQLException caughtWhileCancelling = null; |
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80 | StatementImpl toCancel; |
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81 | Properties origConnProps = null; |
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82 | String origConnURL = ""; |
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83 | |
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84 | CancelTask(StatementImpl cancellee) throws SQLException { |
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85 | connectionId = cancellee.connectionId; |
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86 | origHost = connection.getHost(); |
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87 | toCancel = cancellee; |
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88 | origConnProps = new Properties(); |
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89 | |
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90 | Properties props = connection.getProperties(); |
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91 | |
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92 | Enumeration<?> keys = props.propertyNames(); |
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93 | |
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94 | while (keys.hasMoreElements()) { |
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95 | String key = keys.nextElement().toString(); |
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96 | origConnProps.setProperty(key, props.getProperty(key)); |
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97 | } |
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98 | |
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99 | origConnURL = connection.getURL(); |
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100 | } |
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101 | |
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102 | public void run() { |
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103 | |
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104 | Thread cancelThread = new Thread() { |
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105 | |
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106 | public void run() { |
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107 | if (connection.getQueryTimeoutKillsConnection()) { |
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108 | try { |
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109 | toCancel.wasCancelled = true; |
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110 | toCancel.wasCancelledByTimeout = true; |
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111 | connection.realClose(false, false, true, |
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112 | new MySQLStatementCancelledException(Messages.getString("Statement.ConnectionKilledDueToTimeout"))); |
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113 | } catch (NullPointerException npe) { |
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114 | // not worth guarding against |
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115 | } catch (SQLException sqlEx) { |
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116 | caughtWhileCancelling = sqlEx; |
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117 | } |
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118 | } else { |
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119 | Connection cancelConn = null; |
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120 | java.sql.Statement cancelStmt = null; |
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121 | |
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122 | try { |
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123 | synchronized (cancelTimeoutMutex) { |
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124 | if (origConnURL.equals(connection.getURL())) { |
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125 | //All's fine |
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126 | cancelConn = connection.duplicate(); |
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127 | cancelStmt = cancelConn.createStatement(); |
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128 | cancelStmt.execute("KILL QUERY " + connectionId); |
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129 | } else { |
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130 | try { |
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131 | cancelConn = (Connection) DriverManager.getConnection(origConnURL, origConnProps); |
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132 | cancelStmt = cancelConn.createStatement(); |
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133 | cancelStmt.execute("KILL QUERY " + connectionId); |
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134 | } catch (NullPointerException npe){ |
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135 | //Log this? "Failed to connect to " + origConnURL + " and KILL query" |
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136 | } |
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137 | } |
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138 | toCancel.wasCancelled = true; |
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139 | toCancel.wasCancelledByTimeout = true; |
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140 | } |
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141 | } catch (SQLException sqlEx) { |
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142 | caughtWhileCancelling = sqlEx; |
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143 | } catch (NullPointerException npe) { |
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144 | // Case when connection closed while starting to cancel |
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145 | // We can't easily synchronize this, because then one thread |
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146 | // can't cancel() a running query |
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147 | |
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148 | // ignore, we shouldn't re-throw this, because the connection's |
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149 | // already closed, so the statement has been timed out. |
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150 | } finally { |
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151 | if (cancelStmt != null) { |
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152 | try { |
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153 | cancelStmt.close(); |
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154 | } catch (SQLException sqlEx) { |
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155 | throw new RuntimeException(sqlEx.toString()); |
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156 | } |
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157 | } |
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158 | |
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159 | if (cancelConn != null) { |
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160 | try { |
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161 | cancelConn.close(); |
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162 | } catch (SQLException sqlEx) { |
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163 | throw new RuntimeException(sqlEx.toString()); |
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164 | } |
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165 | } |
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166 | |
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167 | toCancel = null; |
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168 | origConnProps = null; |
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169 | origConnURL = null; |
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170 | } |
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171 | } |
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172 | } |
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173 | }; |
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174 | |
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175 | cancelThread.start(); |
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176 | } |
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177 | } |
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178 | |
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179 | /** Mutex to prevent race between returning query results and noticing |
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180 | that we're timed-out or cancelled. */ |
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181 | |
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182 | protected Object cancelTimeoutMutex = new Object(); |
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183 | |
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184 | /** Used to generate IDs when profiling. */ |
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185 | static int statementCounter = 1; |
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186 | |
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187 | public final static byte USES_VARIABLES_FALSE = 0; |
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188 | |
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189 | public final static byte USES_VARIABLES_TRUE = 1; |
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190 | |
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191 | public final static byte USES_VARIABLES_UNKNOWN = -1; |
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192 | |
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193 | protected boolean wasCancelled = false; |
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194 | protected boolean wasCancelledByTimeout = false; |
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195 | |
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196 | /** Holds batched commands */ |
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197 | protected List<Object> batchedArgs; |
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198 | |
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199 | /** The character converter to use (if available) */ |
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200 | protected SingleByteCharsetConverter charConverter = null; |
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201 | |
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202 | /** The character encoding to use (if available) */ |
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203 | protected String charEncoding = null; |
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204 | |
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205 | /** The connection that created us */ |
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206 | protected volatile MySQLConnection connection = null; |
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207 | |
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208 | protected long connectionId = 0; |
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209 | |
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210 | /** The catalog in use */ |
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211 | protected String currentCatalog = null; |
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212 | |
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213 | /** Should we process escape codes? */ |
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214 | protected boolean doEscapeProcessing = true; |
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215 | |
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216 | /** If we're profiling, where should events go to? */ |
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217 | protected ProfilerEventHandler eventSink = null; |
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218 | |
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219 | /** The number of rows to fetch at a time (currently ignored) */ |
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220 | private int fetchSize = 0; |
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221 | |
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222 | /** Has this statement been closed? */ |
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223 | protected boolean isClosed = false; |
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224 | |
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225 | /** The auto_increment value for the last insert */ |
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226 | protected long lastInsertId = -1; |
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227 | |
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228 | /** The max field size for this statement */ |
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229 | protected int maxFieldSize = MysqlIO.getMaxBuf(); |
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230 | |
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231 | /** |
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232 | * The maximum number of rows to return for this statement (-1 means _all_ |
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233 | * rows) |
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234 | */ |
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235 | protected int maxRows = -1; |
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236 | |
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237 | /** Has someone changed this for this statement? */ |
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238 | protected boolean maxRowsChanged = false; |
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239 | |
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240 | /** Set of currently-open ResultSets */ |
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241 | protected Set<ResultSetInternalMethods> openResults = new HashSet<ResultSetInternalMethods>(); |
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242 | |
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243 | /** Are we in pedantic mode? */ |
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244 | protected boolean pedantic = false; |
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245 | |
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246 | /** |
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247 | * Where this statement was created, only used if profileSql or |
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248 | * useUsageAdvisor set to true. |
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249 | */ |
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250 | protected Throwable pointOfOrigin; |
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251 | |
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252 | /** Should we profile? */ |
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253 | protected boolean profileSQL = false; |
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254 | |
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255 | /** The current results */ |
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256 | protected ResultSetInternalMethods results = null; |
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257 | |
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258 | /** The concurrency for this result set (updatable or not) */ |
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259 | protected int resultSetConcurrency = 0; |
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260 | |
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261 | /** The type of this result set (scroll sensitive or in-sensitive) */ |
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262 | protected int resultSetType = 0; |
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263 | |
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264 | /** Used to identify this statement when profiling. */ |
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265 | protected int statementId; |
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266 | |
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267 | /** The timeout for a query */ |
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268 | protected int timeoutInMillis = 0; |
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269 | |
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270 | /** The update count for this statement */ |
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271 | protected long updateCount = -1; |
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272 | |
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273 | /** Should we use the usage advisor? */ |
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274 | protected boolean useUsageAdvisor = false; |
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275 | |
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276 | /** The warnings chain. */ |
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277 | protected SQLWarning warningChain = null; |
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278 | |
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279 | /** Has clearWarnings() been called? */ |
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280 | protected boolean clearWarningsCalled = false; |
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281 | |
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282 | /** |
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283 | * Should this statement hold results open over .close() irregardless of |
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284 | * connection's setting? |
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285 | */ |
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286 | protected boolean holdResultsOpenOverClose = false; |
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287 | |
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288 | protected ArrayList<ResultSetRow> batchedGeneratedKeys = null; |
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289 | |
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290 | protected boolean retrieveGeneratedKeys = false; |
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291 | |
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292 | protected boolean continueBatchOnError = false; |
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293 | |
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294 | protected PingTarget pingTarget = null; |
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295 | |
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296 | protected boolean useLegacyDatetimeCode; |
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297 | |
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298 | private ExceptionInterceptor exceptionInterceptor; |
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299 | |
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300 | /** Whether or not the last query was of the form ON DUPLICATE KEY UPDATE */ |
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301 | protected boolean lastQueryIsOnDupKeyUpdate = false; |
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302 | |
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303 | /** Are we currently executing a statement? */ |
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304 | protected final AtomicBoolean statementExecuting = new AtomicBoolean(false); |
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305 | |
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306 | /** |
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307 | * Constructor for a Statement. |
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308 | * |
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309 | * @param c |
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310 | * the Connection instantation that creates us |
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311 | * @param catalog |
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312 | * the database name in use when we were created |
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313 | * |
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314 | * @throws SQLException |
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315 | * if an error occurs. |
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316 | */ |
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317 | public StatementImpl(MySQLConnection c, String catalog) throws SQLException { |
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318 | if ((c == null) || c.isClosed()) { |
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319 | throw SQLError.createSQLException( |
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320 | Messages.getString("Statement.0"), //$NON-NLS-1$ |
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321 | SQLError.SQL_STATE_CONNECTION_NOT_OPEN, null); //$NON-NLS-1$ //$NON-NLS-2$ |
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322 | } |
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323 | |
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324 | this.connection = c; |
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325 | this.connectionId = this.connection.getId(); |
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326 | this.exceptionInterceptor = this.connection |
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327 | .getExceptionInterceptor(); |
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328 | |
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329 | this.currentCatalog = catalog; |
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330 | this.pedantic = this.connection.getPedantic(); |
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331 | this.continueBatchOnError = this.connection.getContinueBatchOnError(); |
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332 | this.useLegacyDatetimeCode = this.connection.getUseLegacyDatetimeCode(); |
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333 | |
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334 | if (!this.connection.getDontTrackOpenResources()) { |
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335 | this.connection.registerStatement(this); |
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336 | } |
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337 | |
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338 | // |
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339 | // Adjust, if we know it |
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340 | // |
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341 | |
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342 | if (this.connection != null) { |
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343 | this.maxFieldSize = this.connection.getMaxAllowedPacket(); |
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344 | |
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345 | int defaultFetchSize = this.connection.getDefaultFetchSize(); |
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346 | |
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347 | if (defaultFetchSize != 0) { |
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348 | setFetchSize(defaultFetchSize); |
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349 | } |
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350 | |
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351 | if (this.connection.getUseUnicode()) { |
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352 | this.charEncoding = this.connection.getEncoding(); |
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353 | |
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354 | this.charConverter = this.connection.getCharsetConverter(this.charEncoding); |
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355 | } |
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356 | |
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357 | |
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358 | |
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359 | boolean profiling = this.connection.getProfileSql() |
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360 | || this.connection.getUseUsageAdvisor() || this.connection.getLogSlowQueries(); |
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361 | |
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362 | if (this.connection.getAutoGenerateTestcaseScript() || profiling) { |
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363 | this.statementId = statementCounter++; |
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364 | } |
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365 | |
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366 | if (profiling) { |
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367 | this.pointOfOrigin = new Throwable(); |
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368 | this.profileSQL = this.connection.getProfileSql(); |
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369 | this.useUsageAdvisor = this.connection.getUseUsageAdvisor(); |
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370 | this.eventSink = ProfilerEventHandlerFactory.getInstance(this.connection); |
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371 | } |
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372 | |
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373 | int maxRowsConn = this.connection.getMaxRows(); |
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374 | |
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375 | if (maxRowsConn != -1) { |
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376 | setMaxRows(maxRowsConn); |
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377 | } |
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378 | |
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379 | this.holdResultsOpenOverClose = this.connection.getHoldResultsOpenOverStatementClose(); |
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380 | } |
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381 | |
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382 | version5013OrNewer = this.connection.versionMeetsMinimum(5, 0, 13); |
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383 | } |
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384 | |
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385 | /** |
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386 | * DOCUMENT ME! |
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387 | * |
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388 | * @param sql |
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389 | * DOCUMENT ME! |
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390 | * |
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391 | * @throws SQLException |
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392 | * DOCUMENT ME! |
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393 | */ |
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394 | public void addBatch(String sql) throws SQLException { |
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395 | synchronized (checkClosed()) { |
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396 | if (this.batchedArgs == null) { |
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397 | this.batchedArgs = new ArrayList<Object>(); |
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398 | } |
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399 | |
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400 | if (sql != null) { |
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401 | this.batchedArgs.add(sql); |
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402 | } |
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403 | } |
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404 | } |
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405 | |
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406 | /** Get the batched args as added by the addBatch method(s). |
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407 | * The list is unmodifiable and might contain any combination of String, |
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408 | * BatchParams, or BatchedBindValues depending on how the parameters were |
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409 | * batched. |
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410 | * @return an unmodifiable List of batched args |
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411 | */ |
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412 | public List<Object> getBatchedArgs() { |
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413 | return batchedArgs==null?null:Collections.unmodifiableList(batchedArgs); |
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414 | } |
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415 | |
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416 | /** |
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417 | * Cancels this Statement object if both the DBMS and driver support |
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418 | * aborting an SQL statement. This method can be used by one thread to |
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419 | * cancel a statement that is being executed by another thread. |
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420 | */ |
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421 | public void cancel() throws SQLException { |
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422 | if (!this.statementExecuting.get()) { |
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423 | return; |
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424 | } |
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425 | |
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426 | if (!this.isClosed && |
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427 | this.connection != null && |
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428 | this.connection.versionMeetsMinimum(5, 0, 0)) { |
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429 | Connection cancelConn = null; |
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430 | java.sql.Statement cancelStmt = null; |
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431 | |
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432 | try { |
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433 | cancelConn = this.connection.duplicate(); |
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434 | cancelStmt = cancelConn.createStatement(); |
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435 | cancelStmt.execute("KILL QUERY " |
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436 | + this.connection.getIO().getThreadId()); |
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437 | this.wasCancelled = true; |
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438 | } finally { |
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439 | if (cancelStmt != null) { |
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440 | cancelStmt.close(); |
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441 | } |
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442 | |
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443 | if (cancelConn != null) { |
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444 | cancelConn.close(); |
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445 | } |
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446 | } |
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447 | |
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448 | } |
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449 | } |
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450 | |
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451 | // --------------------------JDBC 2.0----------------------------- |
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452 | |
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453 | /** |
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454 | * Checks if closed() has been called, and throws an exception if so |
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455 | * |
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456 | * @throws SQLException |
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457 | * if this statement has been closed |
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458 | */ |
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459 | protected MySQLConnection checkClosed() throws SQLException { |
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460 | MySQLConnection c = this.connection; |
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461 | |
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462 | if (c == null) { |
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463 | throw SQLError.createSQLException(Messages |
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464 | .getString("Statement.49"), //$NON-NLS-1$ |
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465 | SQLError.SQL_STATE_CONNECTION_NOT_OPEN, getExceptionInterceptor()); //$NON-NLS-1$ |
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466 | } |
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467 | |
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468 | return c; |
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469 | } |
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470 | |
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471 | /** |
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472 | * Checks if the given SQL query with the given first non-ws char is a DML |
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473 | * statement. Throws an exception if it is. |
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474 | * |
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475 | * @param sql |
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476 | * the SQL to check |
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477 | * @param firstStatementChar |
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478 | * the UC first non-ws char of the statement |
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479 | * |
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480 | * @throws SQLException |
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481 | * if the statement contains DML |
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482 | */ |
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483 | protected void checkForDml(String sql, char firstStatementChar) |
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484 | throws SQLException { |
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485 | if ((firstStatementChar == 'I') || (firstStatementChar == 'U') |
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486 | || (firstStatementChar == 'D') || (firstStatementChar == 'A') |
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487 | || (firstStatementChar == 'C')) { |
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488 | String noCommentSql = StringUtils.stripComments(sql, |
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489 | "'\"", "'\"", true, false, true, true); |
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490 | |
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491 | if (StringUtils.startsWithIgnoreCaseAndWs(noCommentSql, "INSERT") //$NON-NLS-1$ |
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492 | || StringUtils.startsWithIgnoreCaseAndWs(noCommentSql, "UPDATE") //$NON-NLS-1$ |
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493 | || StringUtils.startsWithIgnoreCaseAndWs(noCommentSql, "DELETE") //$NON-NLS-1$ |
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494 | || StringUtils.startsWithIgnoreCaseAndWs(noCommentSql, "DROP") //$NON-NLS-1$ |
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495 | || StringUtils.startsWithIgnoreCaseAndWs(noCommentSql, "CREATE") //$NON-NLS-1$ |
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496 | || StringUtils.startsWithIgnoreCaseAndWs(noCommentSql, "ALTER")) { //$NON-NLS-1$ |
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497 | throw SQLError.createSQLException(Messages |
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498 | .getString("Statement.57"), //$NON-NLS-1$ |
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499 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ |
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500 | } |
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501 | } |
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502 | } |
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503 | |
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504 | /** |
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505 | * Method checkNullOrEmptyQuery. |
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506 | * |
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507 | * @param sql |
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508 | * the SQL to check |
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509 | * |
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510 | * @throws SQLException |
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511 | * if query is null or empty. |
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512 | */ |
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513 | protected void checkNullOrEmptyQuery(String sql) throws SQLException { |
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514 | if (sql == null) { |
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515 | throw SQLError.createSQLException(Messages |
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516 | .getString("Statement.59"), //$NON-NLS-1$ |
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517 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ //$NON-NLS-2$ |
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518 | } |
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519 | |
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520 | if (sql.length() == 0) { |
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521 | throw SQLError.createSQLException(Messages |
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522 | .getString("Statement.61"), //$NON-NLS-1$ |
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523 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ //$NON-NLS-2$ |
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524 | } |
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525 | } |
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526 | |
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527 | /** |
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528 | * JDBC 2.0 Make the set of commands in the current batch empty. This method |
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529 | * is optional. |
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530 | * |
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531 | * @exception SQLException |
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532 | * if a database-access error occurs, or the driver does not |
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533 | * support batch statements |
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534 | */ |
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535 | public void clearBatch() throws SQLException { |
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536 | synchronized (checkClosed()) { |
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537 | if (this.batchedArgs != null) { |
---|
538 | this.batchedArgs.clear(); |
---|
539 | } |
---|
540 | } |
---|
541 | } |
---|
542 | |
---|
543 | /** |
---|
544 | * After this call, getWarnings returns null until a new warning is reported |
---|
545 | * for this Statement. |
---|
546 | * |
---|
547 | * @exception SQLException |
---|
548 | * if a database access error occurs (why?) |
---|
549 | */ |
---|
550 | public void clearWarnings() throws SQLException { |
---|
551 | synchronized (checkClosed()) { |
---|
552 | this.clearWarningsCalled = true; |
---|
553 | this.warningChain = null; |
---|
554 | } |
---|
555 | } |
---|
556 | |
---|
557 | /** |
---|
558 | * In many cases, it is desirable to immediately release a Statement's |
---|
559 | * database and JDBC resources instead of waiting for this to happen when it |
---|
560 | * is automatically closed. The close method provides this immediate |
---|
561 | * release. |
---|
562 | * |
---|
563 | * <p> |
---|
564 | * <B>Note:</B> A Statement is automatically closed when it is garbage |
---|
565 | * collected. When a Statement is closed, its current ResultSet, if one |
---|
566 | * exists, is also closed. |
---|
567 | * </p> |
---|
568 | * |
---|
569 | * @exception SQLException |
---|
570 | * if a database access error occurs |
---|
571 | */ |
---|
572 | public void close() throws SQLException { |
---|
573 | try { |
---|
574 | synchronized (checkClosed()) { |
---|
575 | realClose(true, true); |
---|
576 | } |
---|
577 | } catch (SQLException sqlEx) { |
---|
578 | if (SQLError.SQL_STATE_CONNECTION_NOT_OPEN.equals(sqlEx.getSQLState())) { |
---|
579 | return; |
---|
580 | } |
---|
581 | |
---|
582 | throw sqlEx; |
---|
583 | } |
---|
584 | } |
---|
585 | |
---|
586 | /** |
---|
587 | * Close any open result sets that have been 'held open' |
---|
588 | */ |
---|
589 | protected void closeAllOpenResults() throws SQLException { |
---|
590 | synchronized (checkClosed()) { |
---|
591 | if (this.openResults != null) { |
---|
592 | for (ResultSetInternalMethods element : this.openResults) { |
---|
593 | try { |
---|
594 | element.realClose(false); |
---|
595 | } catch (SQLException sqlEx) { |
---|
596 | AssertionFailedException.shouldNotHappen(sqlEx); |
---|
597 | } |
---|
598 | } |
---|
599 | |
---|
600 | this.openResults.clear(); |
---|
601 | } |
---|
602 | } |
---|
603 | } |
---|
604 | |
---|
605 | public void removeOpenResultSet(ResultSet rs) { |
---|
606 | try { |
---|
607 | synchronized (checkClosed()) { |
---|
608 | if (this.openResults != null) { |
---|
609 | this.openResults.remove(rs); |
---|
610 | } |
---|
611 | } |
---|
612 | } catch (SQLException e) { |
---|
613 | // we can't break the interface, having this be no-op in case of error is ok |
---|
614 | } |
---|
615 | } |
---|
616 | |
---|
617 | public int getOpenResultSetCount() { |
---|
618 | try { |
---|
619 | synchronized (checkClosed()) { |
---|
620 | if (this.openResults != null) { |
---|
621 | return this.openResults.size(); |
---|
622 | } |
---|
623 | |
---|
624 | return 0; |
---|
625 | } |
---|
626 | } catch (SQLException e) { |
---|
627 | // we can't break the interface, having this be no-op in case of error is ok |
---|
628 | |
---|
629 | return 0; |
---|
630 | } |
---|
631 | } |
---|
632 | |
---|
633 | /** |
---|
634 | * @param sql |
---|
635 | * @return |
---|
636 | */ |
---|
637 | private ResultSetInternalMethods createResultSetUsingServerFetch(String sql) |
---|
638 | throws SQLException { |
---|
639 | synchronized (checkClosed()) { |
---|
640 | java.sql.PreparedStatement pStmt = this.connection.prepareStatement( |
---|
641 | sql, this.resultSetType, this.resultSetConcurrency); |
---|
642 | |
---|
643 | pStmt.setFetchSize(this.fetchSize); |
---|
644 | |
---|
645 | if (this.maxRows > -1) { |
---|
646 | pStmt.setMaxRows(this.maxRows); |
---|
647 | } |
---|
648 | |
---|
649 | statementBegins(); |
---|
650 | |
---|
651 | pStmt.execute(); |
---|
652 | |
---|
653 | // |
---|
654 | // Need to be able to get resultset irrespective if we issued DML or |
---|
655 | // not to make this work. |
---|
656 | // |
---|
657 | ResultSetInternalMethods rs = ((com.mysql.jdbc.StatementImpl) pStmt) |
---|
658 | .getResultSetInternal(); |
---|
659 | |
---|
660 | rs |
---|
661 | .setStatementUsedForFetchingRows((com.mysql.jdbc.PreparedStatement) pStmt); |
---|
662 | |
---|
663 | this.results = rs; |
---|
664 | |
---|
665 | return rs; |
---|
666 | } |
---|
667 | } |
---|
668 | |
---|
669 | /** |
---|
670 | * We only stream result sets when they are forward-only, read-only, and the |
---|
671 | * fetch size has been set to Integer.MIN_VALUE |
---|
672 | * |
---|
673 | * @return true if this result set should be streamed row at-a-time, rather |
---|
674 | * than read all at once. |
---|
675 | */ |
---|
676 | protected boolean createStreamingResultSet() { |
---|
677 | try { |
---|
678 | synchronized (checkClosed()) { |
---|
679 | return ((this.resultSetType == java.sql.ResultSet.TYPE_FORWARD_ONLY) |
---|
680 | && (this.resultSetConcurrency == java.sql.ResultSet.CONCUR_READ_ONLY) && (this.fetchSize == Integer.MIN_VALUE)); |
---|
681 | } |
---|
682 | } catch (SQLException e) { |
---|
683 | // we can't break the interface, having this be no-op in case of error is ok |
---|
684 | |
---|
685 | return false; |
---|
686 | } |
---|
687 | } |
---|
688 | |
---|
689 | private int originalResultSetType = 0; |
---|
690 | private int originalFetchSize = 0; |
---|
691 | |
---|
692 | /* (non-Javadoc) |
---|
693 | * @see com.mysql.jdbc.IStatement#enableStreamingResults() |
---|
694 | */ |
---|
695 | public void enableStreamingResults() throws SQLException { |
---|
696 | synchronized (checkClosed()) { |
---|
697 | this.originalResultSetType = this.resultSetType; |
---|
698 | this.originalFetchSize = this.fetchSize; |
---|
699 | |
---|
700 | setFetchSize(Integer.MIN_VALUE); |
---|
701 | setResultSetType(ResultSet.TYPE_FORWARD_ONLY); |
---|
702 | } |
---|
703 | } |
---|
704 | |
---|
705 | public void disableStreamingResults() throws SQLException { |
---|
706 | synchronized (checkClosed()) { |
---|
707 | if (this.fetchSize == Integer.MIN_VALUE && |
---|
708 | this.resultSetType == ResultSet.TYPE_FORWARD_ONLY) { |
---|
709 | setFetchSize(this.originalFetchSize); |
---|
710 | setResultSetType(this.originalResultSetType); |
---|
711 | } |
---|
712 | } |
---|
713 | } |
---|
714 | |
---|
715 | /** |
---|
716 | * Execute a SQL statement that may return multiple results. We don't have |
---|
717 | * to worry about this since we do not support multiple ResultSets. You can |
---|
718 | * use getResultSet or getUpdateCount to retrieve the result. |
---|
719 | * |
---|
720 | * @param sql |
---|
721 | * any SQL statement |
---|
722 | * |
---|
723 | * @return true if the next result is a ResulSet, false if it is an update |
---|
724 | * count or there are no more results |
---|
725 | * |
---|
726 | * @exception SQLException |
---|
727 | * if a database access error occurs |
---|
728 | */ |
---|
729 | public boolean execute(String sql) throws SQLException { |
---|
730 | return execute(sql, false); |
---|
731 | } |
---|
732 | |
---|
733 | private boolean execute(String sql, boolean returnGeneratedKeys) throws SQLException { |
---|
734 | MySQLConnection locallyScopedConn = checkClosed(); |
---|
735 | |
---|
736 | synchronized (locallyScopedConn) { |
---|
737 | this.retrieveGeneratedKeys = returnGeneratedKeys; |
---|
738 | lastQueryIsOnDupKeyUpdate = false; |
---|
739 | if (returnGeneratedKeys) |
---|
740 | lastQueryIsOnDupKeyUpdate = containsOnDuplicateKeyInString(sql); |
---|
741 | |
---|
742 | resetCancelledState(); |
---|
743 | |
---|
744 | checkNullOrEmptyQuery(sql); |
---|
745 | |
---|
746 | checkClosed(); |
---|
747 | |
---|
748 | char firstNonWsChar = StringUtils.firstAlphaCharUc(sql, findStartOfStatement(sql)); |
---|
749 | |
---|
750 | boolean isSelect = true; |
---|
751 | |
---|
752 | if (firstNonWsChar != 'S') { |
---|
753 | isSelect = false; |
---|
754 | |
---|
755 | if (locallyScopedConn.isReadOnly()) { |
---|
756 | throw SQLError.createSQLException(Messages |
---|
757 | .getString("Statement.27") //$NON-NLS-1$ |
---|
758 | + Messages.getString("Statement.28"), //$NON-NLS-1$ |
---|
759 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ |
---|
760 | } |
---|
761 | } |
---|
762 | |
---|
763 | boolean doStreaming = createStreamingResultSet(); |
---|
764 | |
---|
765 | try { |
---|
766 | // Adjust net_write_timeout to a higher value if we're |
---|
767 | // streaming result sets. More often than not, someone runs into |
---|
768 | // an issue where they blow net_write_timeout when using this |
---|
769 | // feature, and if they're willing to hold a result set open |
---|
770 | // for 30 seconds or more, one more round-trip isn't going to hurt |
---|
771 | // |
---|
772 | // This is reset by RowDataDynamic.close(). |
---|
773 | |
---|
774 | if (doStreaming |
---|
775 | && locallyScopedConn.getNetTimeoutForStreamingResults() > 0) { |
---|
776 | executeSimpleNonQuery(locallyScopedConn, "SET net_write_timeout=" |
---|
777 | + locallyScopedConn.getNetTimeoutForStreamingResults()); |
---|
778 | } |
---|
779 | |
---|
780 | if (this.doEscapeProcessing) { |
---|
781 | Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, |
---|
782 | locallyScopedConn.serverSupportsConvertFn(), locallyScopedConn); |
---|
783 | |
---|
784 | if (escapedSqlResult instanceof String) { |
---|
785 | sql = (String) escapedSqlResult; |
---|
786 | } else { |
---|
787 | sql = ((EscapeProcessorResult) escapedSqlResult).escapedSql; |
---|
788 | } |
---|
789 | } |
---|
790 | |
---|
791 | if (this.results != null) { |
---|
792 | if (!locallyScopedConn.getHoldResultsOpenOverStatementClose()) { |
---|
793 | this.results.realClose(false); |
---|
794 | } |
---|
795 | } |
---|
796 | |
---|
797 | if (sql.charAt(0) == '/') { |
---|
798 | if (sql.startsWith(PING_MARKER)) { |
---|
799 | doPingInstead(); |
---|
800 | |
---|
801 | return true; |
---|
802 | } |
---|
803 | } |
---|
804 | |
---|
805 | CachedResultSetMetaData cachedMetaData = null; |
---|
806 | |
---|
807 | ResultSetInternalMethods rs = null; |
---|
808 | |
---|
809 | // If there isn't a limit clause in the SQL |
---|
810 | // then limit the number of rows to return in |
---|
811 | // an efficient manner. Only do this if |
---|
812 | // setMaxRows() hasn't been used on any Statements |
---|
813 | // generated from the current Connection (saves |
---|
814 | // a query, and network traffic). |
---|
815 | |
---|
816 | this.batchedGeneratedKeys = null; |
---|
817 | |
---|
818 | if (useServerFetch()) { |
---|
819 | rs = createResultSetUsingServerFetch(sql); |
---|
820 | } else { |
---|
821 | CancelTask timeoutTask = null; |
---|
822 | |
---|
823 | String oldCatalog = null; |
---|
824 | |
---|
825 | try { |
---|
826 | if (locallyScopedConn.getEnableQueryTimeouts() && |
---|
827 | this.timeoutInMillis != 0 |
---|
828 | && locallyScopedConn.versionMeetsMinimum(5, 0, 0)) { |
---|
829 | timeoutTask = new CancelTask(this); |
---|
830 | locallyScopedConn.getCancelTimer().schedule(timeoutTask, |
---|
831 | this.timeoutInMillis); |
---|
832 | } |
---|
833 | |
---|
834 | if (!locallyScopedConn.getCatalog().equals( |
---|
835 | this.currentCatalog)) { |
---|
836 | oldCatalog = locallyScopedConn.getCatalog(); |
---|
837 | locallyScopedConn.setCatalog(this.currentCatalog); |
---|
838 | } |
---|
839 | |
---|
840 | // |
---|
841 | // Check if we have cached metadata for this query... |
---|
842 | // |
---|
843 | |
---|
844 | Field[] cachedFields = null; |
---|
845 | |
---|
846 | if (locallyScopedConn.getCacheResultSetMetadata()) { |
---|
847 | cachedMetaData = locallyScopedConn.getCachedMetaData(sql); |
---|
848 | |
---|
849 | if (cachedMetaData != null) { |
---|
850 | cachedFields = cachedMetaData.fields; |
---|
851 | } |
---|
852 | } |
---|
853 | |
---|
854 | // |
---|
855 | // Only apply max_rows to selects |
---|
856 | // |
---|
857 | if (locallyScopedConn.useMaxRows()) { |
---|
858 | int rowLimit = -1; |
---|
859 | |
---|
860 | if (isSelect) { |
---|
861 | if (StringUtils.indexOfIgnoreCase(sql, "LIMIT") != -1) { //$NON-NLS-1$ |
---|
862 | rowLimit = this.maxRows; |
---|
863 | } else { |
---|
864 | if (this.maxRows <= 0) { |
---|
865 | executeSimpleNonQuery(locallyScopedConn, |
---|
866 | "SET SQL_SELECT_LIMIT=DEFAULT"); |
---|
867 | } else { |
---|
868 | executeSimpleNonQuery(locallyScopedConn, |
---|
869 | "SET SQL_SELECT_LIMIT=" + this.maxRows); |
---|
870 | } |
---|
871 | } |
---|
872 | } else { |
---|
873 | executeSimpleNonQuery(locallyScopedConn, |
---|
874 | "SET SQL_SELECT_LIMIT=DEFAULT"); |
---|
875 | } |
---|
876 | |
---|
877 | |
---|
878 | statementBegins(); |
---|
879 | |
---|
880 | // Finally, execute the query |
---|
881 | rs = locallyScopedConn.execSQL(this, sql, rowLimit, null, |
---|
882 | this.resultSetType, this.resultSetConcurrency, |
---|
883 | doStreaming, |
---|
884 | this.currentCatalog, cachedFields); |
---|
885 | } else { |
---|
886 | statementBegins(); |
---|
887 | |
---|
888 | rs = locallyScopedConn.execSQL(this, sql, -1, null, |
---|
889 | this.resultSetType, this.resultSetConcurrency, |
---|
890 | doStreaming, |
---|
891 | this.currentCatalog, cachedFields); |
---|
892 | } |
---|
893 | |
---|
894 | if (timeoutTask != null) { |
---|
895 | if (timeoutTask.caughtWhileCancelling != null) { |
---|
896 | throw timeoutTask.caughtWhileCancelling; |
---|
897 | } |
---|
898 | |
---|
899 | timeoutTask.cancel(); |
---|
900 | timeoutTask = null; |
---|
901 | } |
---|
902 | |
---|
903 | synchronized (this.cancelTimeoutMutex) { |
---|
904 | if (this.wasCancelled) { |
---|
905 | SQLException cause = null; |
---|
906 | |
---|
907 | if (this.wasCancelledByTimeout) { |
---|
908 | cause = new MySQLTimeoutException(); |
---|
909 | } else { |
---|
910 | cause = new MySQLStatementCancelledException(); |
---|
911 | } |
---|
912 | |
---|
913 | resetCancelledState(); |
---|
914 | |
---|
915 | throw cause; |
---|
916 | } |
---|
917 | } |
---|
918 | } finally { |
---|
919 | if (timeoutTask != null) { |
---|
920 | timeoutTask.cancel(); |
---|
921 | locallyScopedConn.getCancelTimer().purge(); |
---|
922 | } |
---|
923 | |
---|
924 | if (oldCatalog != null) { |
---|
925 | locallyScopedConn.setCatalog(oldCatalog); |
---|
926 | } |
---|
927 | } |
---|
928 | } |
---|
929 | |
---|
930 | if (rs != null) { |
---|
931 | this.lastInsertId = rs.getUpdateID(); |
---|
932 | |
---|
933 | this.results = rs; |
---|
934 | |
---|
935 | rs.setFirstCharOfQuery(firstNonWsChar); |
---|
936 | |
---|
937 | if (rs.reallyResult()) { |
---|
938 | if (cachedMetaData != null) { |
---|
939 | locallyScopedConn.initializeResultsMetadataFromCache(sql, cachedMetaData, |
---|
940 | this.results); |
---|
941 | } else { |
---|
942 | if (this.connection.getCacheResultSetMetadata()) { |
---|
943 | locallyScopedConn.initializeResultsMetadataFromCache(sql, |
---|
944 | null /* will be created */, this.results); |
---|
945 | } |
---|
946 | } |
---|
947 | } |
---|
948 | } |
---|
949 | |
---|
950 | return ((rs != null) && rs.reallyResult()); |
---|
951 | } finally { |
---|
952 | this.statementExecuting.set(false); |
---|
953 | } |
---|
954 | } |
---|
955 | } |
---|
956 | |
---|
957 | protected void statementBegins() { |
---|
958 | this.clearWarningsCalled = false; |
---|
959 | this.statementExecuting.set(true); |
---|
960 | } |
---|
961 | |
---|
962 | protected void resetCancelledState() throws SQLException { |
---|
963 | synchronized (checkClosed()) { |
---|
964 | if (this.cancelTimeoutMutex == null) { |
---|
965 | return; |
---|
966 | } |
---|
967 | |
---|
968 | synchronized (this.cancelTimeoutMutex) { |
---|
969 | this.wasCancelled = false; |
---|
970 | this.wasCancelledByTimeout = false; |
---|
971 | } |
---|
972 | } |
---|
973 | } |
---|
974 | |
---|
975 | /** |
---|
976 | * @see StatementImpl#execute(String, int) |
---|
977 | */ |
---|
978 | public boolean execute(String sql, int returnGeneratedKeys) |
---|
979 | throws SQLException { |
---|
980 | |
---|
981 | |
---|
982 | if (returnGeneratedKeys == java.sql.Statement.RETURN_GENERATED_KEYS) { |
---|
983 | checkClosed(); |
---|
984 | |
---|
985 | MySQLConnection locallyScopedConn = this.connection; |
---|
986 | |
---|
987 | synchronized (locallyScopedConn) { |
---|
988 | // If this is a 'REPLACE' query, we need to be able to parse |
---|
989 | // the 'info' message returned from the server to determine |
---|
990 | // the actual number of keys generated. |
---|
991 | boolean readInfoMsgState = this.connection |
---|
992 | .isReadInfoMsgEnabled(); |
---|
993 | locallyScopedConn.setReadInfoMsgEnabled(true); |
---|
994 | |
---|
995 | try { |
---|
996 | return execute(sql, true); |
---|
997 | } finally { |
---|
998 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
---|
999 | } |
---|
1000 | } |
---|
1001 | } |
---|
1002 | |
---|
1003 | return execute(sql); |
---|
1004 | } |
---|
1005 | |
---|
1006 | /** |
---|
1007 | * @see StatementImpl#execute(String, int[]) |
---|
1008 | */ |
---|
1009 | public boolean execute(String sql, int[] generatedKeyIndices) |
---|
1010 | throws SQLException { |
---|
1011 | MySQLConnection locallyScopedConn = checkClosed(); |
---|
1012 | |
---|
1013 | synchronized (locallyScopedConn) { |
---|
1014 | if ((generatedKeyIndices != null) && (generatedKeyIndices.length > 0)) { |
---|
1015 | |
---|
1016 | this.retrieveGeneratedKeys = true; |
---|
1017 | |
---|
1018 | // If this is a 'REPLACE' query, we need to be able to parse |
---|
1019 | // the 'info' message returned from the server to determine |
---|
1020 | // the actual number of keys generated. |
---|
1021 | boolean readInfoMsgState = locallyScopedConn |
---|
1022 | .isReadInfoMsgEnabled(); |
---|
1023 | locallyScopedConn.setReadInfoMsgEnabled(true); |
---|
1024 | |
---|
1025 | try { |
---|
1026 | return execute(sql, true); |
---|
1027 | } finally { |
---|
1028 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
---|
1029 | } |
---|
1030 | } |
---|
1031 | |
---|
1032 | return execute(sql); |
---|
1033 | } |
---|
1034 | } |
---|
1035 | |
---|
1036 | /** |
---|
1037 | * @see StatementImpl#execute(String, String[]) |
---|
1038 | */ |
---|
1039 | public boolean execute(String sql, String[] generatedKeyNames) |
---|
1040 | throws SQLException { |
---|
1041 | MySQLConnection locallyScopedConn = checkClosed(); |
---|
1042 | |
---|
1043 | synchronized (locallyScopedConn) { |
---|
1044 | if ((generatedKeyNames != null) && (generatedKeyNames.length > 0)) { |
---|
1045 | |
---|
1046 | this.retrieveGeneratedKeys = true; |
---|
1047 | // If this is a 'REPLACE' query, we need to be able to parse |
---|
1048 | // the 'info' message returned from the server to determine |
---|
1049 | // the actual number of keys generated. |
---|
1050 | boolean readInfoMsgState = this.connection |
---|
1051 | .isReadInfoMsgEnabled(); |
---|
1052 | locallyScopedConn.setReadInfoMsgEnabled(true); |
---|
1053 | |
---|
1054 | try { |
---|
1055 | return execute(sql, true); |
---|
1056 | } finally { |
---|
1057 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
---|
1058 | } |
---|
1059 | } |
---|
1060 | |
---|
1061 | return execute(sql); |
---|
1062 | } |
---|
1063 | } |
---|
1064 | |
---|
1065 | /** |
---|
1066 | * JDBC 2.0 Submit a batch of commands to the database for execution. This |
---|
1067 | * method is optional. |
---|
1068 | * |
---|
1069 | * @return an array of update counts containing one element for each command |
---|
1070 | * in the batch. The array is ordered according to the order in |
---|
1071 | * which commands were inserted into the batch |
---|
1072 | * |
---|
1073 | * @exception SQLException |
---|
1074 | * if a database-access error occurs, or the driver does not |
---|
1075 | * support batch statements |
---|
1076 | * @throws java.sql.BatchUpdateException |
---|
1077 | * DOCUMENT ME! |
---|
1078 | */ |
---|
1079 | public int[] executeBatch() throws SQLException { |
---|
1080 | MySQLConnection locallyScopedConn = checkClosed(); |
---|
1081 | |
---|
1082 | synchronized (locallyScopedConn) { |
---|
1083 | if (locallyScopedConn.isReadOnly()) { |
---|
1084 | throw SQLError.createSQLException(Messages |
---|
1085 | .getString("Statement.34") //$NON-NLS-1$ |
---|
1086 | + Messages.getString("Statement.35"), //$NON-NLS-1$ |
---|
1087 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ |
---|
1088 | } |
---|
1089 | |
---|
1090 | if (this.results != null) { |
---|
1091 | if (!locallyScopedConn.getHoldResultsOpenOverStatementClose()) { |
---|
1092 | this.results.realClose(false); |
---|
1093 | } |
---|
1094 | } |
---|
1095 | |
---|
1096 | |
---|
1097 | if (this.batchedArgs == null || this.batchedArgs.size() == 0) { |
---|
1098 | return new int[0]; |
---|
1099 | } |
---|
1100 | |
---|
1101 | // we timeout the entire batch, not individual statements |
---|
1102 | int individualStatementTimeout = this.timeoutInMillis; |
---|
1103 | this.timeoutInMillis = 0; |
---|
1104 | |
---|
1105 | CancelTask timeoutTask = null; |
---|
1106 | |
---|
1107 | try { |
---|
1108 | resetCancelledState(); |
---|
1109 | |
---|
1110 | statementBegins(); |
---|
1111 | |
---|
1112 | try { |
---|
1113 | this.retrieveGeneratedKeys = true; // The JDBC spec doesn't forbid this, but doesn't provide for it either...we do.. |
---|
1114 | |
---|
1115 | int[] updateCounts = null; |
---|
1116 | |
---|
1117 | |
---|
1118 | if (this.batchedArgs != null) { |
---|
1119 | int nbrCommands = this.batchedArgs.size(); |
---|
1120 | |
---|
1121 | this.batchedGeneratedKeys = new ArrayList<ResultSetRow>(this.batchedArgs.size()); |
---|
1122 | |
---|
1123 | boolean multiQueriesEnabled = locallyScopedConn.getAllowMultiQueries(); |
---|
1124 | |
---|
1125 | if (locallyScopedConn.versionMeetsMinimum(4, 1, 1) && |
---|
1126 | (multiQueriesEnabled || |
---|
1127 | (locallyScopedConn.getRewriteBatchedStatements() && |
---|
1128 | nbrCommands > 4))) { |
---|
1129 | return executeBatchUsingMultiQueries(multiQueriesEnabled, nbrCommands, individualStatementTimeout); |
---|
1130 | } |
---|
1131 | |
---|
1132 | if (locallyScopedConn.getEnableQueryTimeouts() && |
---|
1133 | individualStatementTimeout != 0 |
---|
1134 | && locallyScopedConn.versionMeetsMinimum(5, 0, 0)) { |
---|
1135 | timeoutTask = new CancelTask(this); |
---|
1136 | locallyScopedConn.getCancelTimer().schedule(timeoutTask, |
---|
1137 | individualStatementTimeout); |
---|
1138 | } |
---|
1139 | |
---|
1140 | updateCounts = new int[nbrCommands]; |
---|
1141 | |
---|
1142 | for (int i = 0; i < nbrCommands; i++) { |
---|
1143 | updateCounts[i] = -3; |
---|
1144 | } |
---|
1145 | |
---|
1146 | SQLException sqlEx = null; |
---|
1147 | |
---|
1148 | int commandIndex = 0; |
---|
1149 | |
---|
1150 | for (commandIndex = 0; commandIndex < nbrCommands; commandIndex++) { |
---|
1151 | try { |
---|
1152 | String sql = (String) this.batchedArgs.get(commandIndex); |
---|
1153 | updateCounts[commandIndex] = executeUpdate(sql, true, true); |
---|
1154 | // limit one generated key per OnDuplicateKey statement |
---|
1155 | getBatchedGeneratedKeys(containsOnDuplicateKeyInString(sql) ? 1 : 0); |
---|
1156 | } catch (SQLException ex) { |
---|
1157 | updateCounts[commandIndex] = EXECUTE_FAILED; |
---|
1158 | |
---|
1159 | if (this.continueBatchOnError && |
---|
1160 | !(ex instanceof MySQLTimeoutException) && |
---|
1161 | !(ex instanceof MySQLStatementCancelledException) && |
---|
1162 | !hasDeadlockOrTimeoutRolledBackTx(ex)) { |
---|
1163 | sqlEx = ex; |
---|
1164 | } else { |
---|
1165 | int[] newUpdateCounts = new int[commandIndex]; |
---|
1166 | |
---|
1167 | if (hasDeadlockOrTimeoutRolledBackTx(ex)) { |
---|
1168 | for (int i = 0; i < newUpdateCounts.length; i++) { |
---|
1169 | newUpdateCounts[i] = Statement.EXECUTE_FAILED; |
---|
1170 | } |
---|
1171 | } else { |
---|
1172 | System.arraycopy(updateCounts, 0, |
---|
1173 | newUpdateCounts, 0, commandIndex); |
---|
1174 | } |
---|
1175 | |
---|
1176 | throw new java.sql.BatchUpdateException(ex |
---|
1177 | .getMessage(), ex.getSQLState(), ex |
---|
1178 | .getErrorCode(), newUpdateCounts); |
---|
1179 | } |
---|
1180 | } |
---|
1181 | } |
---|
1182 | |
---|
1183 | if (sqlEx != null) { |
---|
1184 | throw new java.sql.BatchUpdateException(sqlEx |
---|
1185 | .getMessage(), sqlEx.getSQLState(), sqlEx |
---|
1186 | .getErrorCode(), updateCounts); |
---|
1187 | } |
---|
1188 | } |
---|
1189 | |
---|
1190 | if (timeoutTask != null) { |
---|
1191 | if (timeoutTask.caughtWhileCancelling != null) { |
---|
1192 | throw timeoutTask.caughtWhileCancelling; |
---|
1193 | } |
---|
1194 | |
---|
1195 | timeoutTask.cancel(); |
---|
1196 | |
---|
1197 | locallyScopedConn.getCancelTimer().purge(); |
---|
1198 | timeoutTask = null; |
---|
1199 | } |
---|
1200 | |
---|
1201 | return (updateCounts != null) ? updateCounts : new int[0]; |
---|
1202 | } finally { |
---|
1203 | this.statementExecuting.set(false); |
---|
1204 | } |
---|
1205 | } finally { |
---|
1206 | |
---|
1207 | if (timeoutTask != null) { |
---|
1208 | timeoutTask.cancel(); |
---|
1209 | |
---|
1210 | locallyScopedConn.getCancelTimer().purge(); |
---|
1211 | } |
---|
1212 | |
---|
1213 | resetCancelledState(); |
---|
1214 | |
---|
1215 | this.timeoutInMillis = individualStatementTimeout; |
---|
1216 | |
---|
1217 | clearBatch(); |
---|
1218 | } |
---|
1219 | } |
---|
1220 | } |
---|
1221 | |
---|
1222 | protected final boolean hasDeadlockOrTimeoutRolledBackTx(SQLException ex) { |
---|
1223 | int vendorCode = ex.getErrorCode(); |
---|
1224 | |
---|
1225 | switch (vendorCode) { |
---|
1226 | case MysqlErrorNumbers.ER_LOCK_DEADLOCK: |
---|
1227 | case MysqlErrorNumbers.ER_LOCK_TABLE_FULL: |
---|
1228 | return true; |
---|
1229 | case MysqlErrorNumbers.ER_LOCK_WAIT_TIMEOUT: |
---|
1230 | return !version5013OrNewer; |
---|
1231 | default: |
---|
1232 | return false; |
---|
1233 | } |
---|
1234 | } |
---|
1235 | |
---|
1236 | /** |
---|
1237 | * Rewrites batch into a single query to send to the server. This method |
---|
1238 | * will constrain each batch to be shorter than max_allowed_packet on the |
---|
1239 | * server. |
---|
1240 | * |
---|
1241 | * @return update counts in the same manner as executeBatch() |
---|
1242 | * @throws SQLException |
---|
1243 | */ |
---|
1244 | private int[] executeBatchUsingMultiQueries(boolean multiQueriesEnabled, |
---|
1245 | int nbrCommands, int individualStatementTimeout) throws SQLException { |
---|
1246 | |
---|
1247 | MySQLConnection locallyScopedConn = checkClosed(); |
---|
1248 | |
---|
1249 | synchronized (locallyScopedConn) { |
---|
1250 | if (!multiQueriesEnabled) { |
---|
1251 | locallyScopedConn.getIO().enableMultiQueries(); |
---|
1252 | } |
---|
1253 | |
---|
1254 | java.sql.Statement batchStmt = null; |
---|
1255 | |
---|
1256 | CancelTask timeoutTask = null; |
---|
1257 | |
---|
1258 | try { |
---|
1259 | int[] updateCounts = new int[nbrCommands]; |
---|
1260 | |
---|
1261 | for (int i = 0; i < nbrCommands; i++) { |
---|
1262 | updateCounts[i] = -3; |
---|
1263 | } |
---|
1264 | |
---|
1265 | int commandIndex = 0; |
---|
1266 | |
---|
1267 | StringBuffer queryBuf = new StringBuffer(); |
---|
1268 | |
---|
1269 | batchStmt = locallyScopedConn.createStatement(); |
---|
1270 | |
---|
1271 | if (locallyScopedConn.getEnableQueryTimeouts() && |
---|
1272 | individualStatementTimeout != 0 |
---|
1273 | && locallyScopedConn.versionMeetsMinimum(5, 0, 0)) { |
---|
1274 | timeoutTask = new CancelTask((StatementImpl)batchStmt); |
---|
1275 | locallyScopedConn.getCancelTimer().schedule(timeoutTask, |
---|
1276 | individualStatementTimeout); |
---|
1277 | } |
---|
1278 | |
---|
1279 | int counter = 0; |
---|
1280 | |
---|
1281 | int numberOfBytesPerChar = 1; |
---|
1282 | |
---|
1283 | String connectionEncoding = locallyScopedConn.getEncoding(); |
---|
1284 | |
---|
1285 | if (StringUtils.startsWithIgnoreCase(connectionEncoding, "utf")) { |
---|
1286 | numberOfBytesPerChar = 3; |
---|
1287 | } else if (CharsetMapping.isMultibyteCharset(connectionEncoding)) { |
---|
1288 | numberOfBytesPerChar = 2; |
---|
1289 | } |
---|
1290 | |
---|
1291 | int escapeAdjust = 1; |
---|
1292 | |
---|
1293 | batchStmt.setEscapeProcessing(this.doEscapeProcessing); |
---|
1294 | |
---|
1295 | if (this.doEscapeProcessing) { |
---|
1296 | |
---|
1297 | escapeAdjust = 2; /* We assume packet _could_ grow by this amount, as we're not |
---|
1298 | sure how big statement will end up after |
---|
1299 | escape processing */ |
---|
1300 | } |
---|
1301 | |
---|
1302 | SQLException sqlEx = null; |
---|
1303 | |
---|
1304 | int argumentSetsInBatchSoFar = 0; |
---|
1305 | |
---|
1306 | for (commandIndex = 0; commandIndex < nbrCommands; commandIndex++) { |
---|
1307 | String nextQuery = (String) this.batchedArgs.get(commandIndex); |
---|
1308 | |
---|
1309 | if (((((queryBuf.length() + nextQuery.length()) |
---|
1310 | * numberOfBytesPerChar) + 1 /* for semicolon */ |
---|
1311 | + MysqlIO.HEADER_LENGTH) * escapeAdjust) + 32 > this.connection |
---|
1312 | .getMaxAllowedPacket()) { |
---|
1313 | try { |
---|
1314 | batchStmt.execute(queryBuf.toString(), Statement.RETURN_GENERATED_KEYS); |
---|
1315 | } catch (SQLException ex) { |
---|
1316 | sqlEx = handleExceptionForBatch(commandIndex, |
---|
1317 | argumentSetsInBatchSoFar, updateCounts, ex); |
---|
1318 | } |
---|
1319 | |
---|
1320 | counter = processMultiCountsAndKeys((StatementImpl)batchStmt, counter, |
---|
1321 | updateCounts); |
---|
1322 | |
---|
1323 | queryBuf = new StringBuffer(); |
---|
1324 | argumentSetsInBatchSoFar = 0; |
---|
1325 | } |
---|
1326 | |
---|
1327 | queryBuf.append(nextQuery); |
---|
1328 | queryBuf.append(";"); |
---|
1329 | argumentSetsInBatchSoFar++; |
---|
1330 | } |
---|
1331 | |
---|
1332 | if (queryBuf.length() > 0) { |
---|
1333 | try { |
---|
1334 | batchStmt.execute(queryBuf.toString(), Statement.RETURN_GENERATED_KEYS); |
---|
1335 | } catch (SQLException ex) { |
---|
1336 | sqlEx = handleExceptionForBatch(commandIndex - 1, |
---|
1337 | argumentSetsInBatchSoFar, updateCounts, ex); |
---|
1338 | } |
---|
1339 | |
---|
1340 | counter = processMultiCountsAndKeys((StatementImpl)batchStmt, counter, |
---|
1341 | updateCounts); |
---|
1342 | } |
---|
1343 | |
---|
1344 | if (timeoutTask != null) { |
---|
1345 | if (timeoutTask.caughtWhileCancelling != null) { |
---|
1346 | throw timeoutTask.caughtWhileCancelling; |
---|
1347 | } |
---|
1348 | |
---|
1349 | timeoutTask.cancel(); |
---|
1350 | |
---|
1351 | locallyScopedConn.getCancelTimer().purge(); |
---|
1352 | |
---|
1353 | timeoutTask = null; |
---|
1354 | } |
---|
1355 | |
---|
1356 | if (sqlEx != null) { |
---|
1357 | throw new java.sql.BatchUpdateException(sqlEx |
---|
1358 | .getMessage(), sqlEx.getSQLState(), sqlEx |
---|
1359 | .getErrorCode(), updateCounts); |
---|
1360 | } |
---|
1361 | |
---|
1362 | return (updateCounts != null) ? updateCounts : new int[0]; |
---|
1363 | } finally { |
---|
1364 | if (timeoutTask != null) { |
---|
1365 | timeoutTask.cancel(); |
---|
1366 | |
---|
1367 | locallyScopedConn.getCancelTimer().purge(); |
---|
1368 | } |
---|
1369 | |
---|
1370 | resetCancelledState(); |
---|
1371 | |
---|
1372 | try { |
---|
1373 | if (batchStmt != null) { |
---|
1374 | batchStmt.close(); |
---|
1375 | } |
---|
1376 | } finally { |
---|
1377 | if (!multiQueriesEnabled) { |
---|
1378 | locallyScopedConn.getIO().disableMultiQueries(); |
---|
1379 | } |
---|
1380 | } |
---|
1381 | } |
---|
1382 | } |
---|
1383 | } |
---|
1384 | |
---|
1385 | protected int processMultiCountsAndKeys( |
---|
1386 | StatementImpl batchedStatement, |
---|
1387 | int updateCountCounter, int[] updateCounts) throws SQLException { |
---|
1388 | synchronized (checkClosed()) { |
---|
1389 | updateCounts[updateCountCounter++] = batchedStatement.getUpdateCount(); |
---|
1390 | |
---|
1391 | boolean doGenKeys = this.batchedGeneratedKeys != null; |
---|
1392 | |
---|
1393 | byte[][] row = null; |
---|
1394 | |
---|
1395 | if (doGenKeys) { |
---|
1396 | long generatedKey = batchedStatement.getLastInsertID(); |
---|
1397 | |
---|
1398 | row = new byte[1][]; |
---|
1399 | row[0] = StringUtils.getBytes(Long.toString(generatedKey)); |
---|
1400 | this.batchedGeneratedKeys.add(new ByteArrayRow(row, getExceptionInterceptor())); |
---|
1401 | } |
---|
1402 | |
---|
1403 | while (batchedStatement.getMoreResults() |
---|
1404 | || batchedStatement.getUpdateCount() != -1) { |
---|
1405 | updateCounts[updateCountCounter++] = batchedStatement.getUpdateCount(); |
---|
1406 | |
---|
1407 | if (doGenKeys) { |
---|
1408 | long generatedKey = batchedStatement.getLastInsertID(); |
---|
1409 | |
---|
1410 | row = new byte[1][]; |
---|
1411 | row[0] = StringUtils.getBytes(Long.toString(generatedKey)); |
---|
1412 | this.batchedGeneratedKeys.add(new ByteArrayRow(row, getExceptionInterceptor())); |
---|
1413 | } |
---|
1414 | } |
---|
1415 | |
---|
1416 | return updateCountCounter; |
---|
1417 | } |
---|
1418 | } |
---|
1419 | |
---|
1420 | protected SQLException handleExceptionForBatch(int endOfBatchIndex, |
---|
1421 | int numValuesPerBatch, int[] updateCounts, SQLException ex) |
---|
1422 | throws BatchUpdateException { |
---|
1423 | SQLException sqlEx; |
---|
1424 | |
---|
1425 | for (int j = endOfBatchIndex; j > endOfBatchIndex - numValuesPerBatch; j--) { |
---|
1426 | updateCounts[j] = EXECUTE_FAILED; |
---|
1427 | } |
---|
1428 | |
---|
1429 | if (this.continueBatchOnError && |
---|
1430 | !(ex instanceof MySQLTimeoutException) && |
---|
1431 | !(ex instanceof MySQLStatementCancelledException) && |
---|
1432 | !hasDeadlockOrTimeoutRolledBackTx(ex)) { |
---|
1433 | sqlEx = ex; |
---|
1434 | } else { |
---|
1435 | int[] newUpdateCounts = new int[endOfBatchIndex]; |
---|
1436 | System.arraycopy(updateCounts, 0, |
---|
1437 | newUpdateCounts, 0, endOfBatchIndex); |
---|
1438 | |
---|
1439 | BatchUpdateException batchException = new BatchUpdateException(ex |
---|
1440 | .getMessage(), ex.getSQLState(), ex |
---|
1441 | .getErrorCode(), newUpdateCounts); |
---|
1442 | batchException.initCause(ex); |
---|
1443 | throw batchException; |
---|
1444 | } |
---|
1445 | |
---|
1446 | return sqlEx; |
---|
1447 | } |
---|
1448 | |
---|
1449 | /** |
---|
1450 | * Execute a SQL statement that retruns a single ResultSet |
---|
1451 | * |
---|
1452 | * @param sql |
---|
1453 | * typically a static SQL SELECT statement |
---|
1454 | * |
---|
1455 | * @return a ResulSet that contains the data produced by the query |
---|
1456 | * |
---|
1457 | * @exception SQLException |
---|
1458 | * if a database access error occurs |
---|
1459 | */ |
---|
1460 | public java.sql.ResultSet executeQuery(String sql) |
---|
1461 | throws SQLException { |
---|
1462 | synchronized (checkClosed()) { |
---|
1463 | MySQLConnection locallyScopedConn = this.connection; |
---|
1464 | |
---|
1465 | this.retrieveGeneratedKeys = false; |
---|
1466 | |
---|
1467 | resetCancelledState(); |
---|
1468 | |
---|
1469 | checkNullOrEmptyQuery(sql); |
---|
1470 | |
---|
1471 | boolean doStreaming = createStreamingResultSet(); |
---|
1472 | |
---|
1473 | // Adjust net_write_timeout to a higher value if we're |
---|
1474 | // streaming result sets. More often than not, someone runs into |
---|
1475 | // an issue where they blow net_write_timeout when using this |
---|
1476 | // feature, and if they're willing to hold a result set open |
---|
1477 | // for 30 seconds or more, one more round-trip isn't going to hurt |
---|
1478 | // |
---|
1479 | // This is reset by RowDataDynamic.close(). |
---|
1480 | |
---|
1481 | if (doStreaming |
---|
1482 | && this.connection.getNetTimeoutForStreamingResults() > 0) { |
---|
1483 | executeSimpleNonQuery(locallyScopedConn, "SET net_write_timeout=" |
---|
1484 | + this.connection.getNetTimeoutForStreamingResults()); |
---|
1485 | } |
---|
1486 | |
---|
1487 | if (this.doEscapeProcessing) { |
---|
1488 | Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, |
---|
1489 | locallyScopedConn.serverSupportsConvertFn(), this.connection); |
---|
1490 | |
---|
1491 | if (escapedSqlResult instanceof String) { |
---|
1492 | sql = (String) escapedSqlResult; |
---|
1493 | } else { |
---|
1494 | sql = ((EscapeProcessorResult) escapedSqlResult).escapedSql; |
---|
1495 | } |
---|
1496 | } |
---|
1497 | |
---|
1498 | char firstStatementChar = StringUtils.firstNonWsCharUc(sql, |
---|
1499 | findStartOfStatement(sql)); |
---|
1500 | |
---|
1501 | if (sql.charAt(0) == '/') { |
---|
1502 | if (sql.startsWith(PING_MARKER)) { |
---|
1503 | doPingInstead(); |
---|
1504 | |
---|
1505 | return this.results; |
---|
1506 | } |
---|
1507 | } |
---|
1508 | |
---|
1509 | checkForDml(sql, firstStatementChar); |
---|
1510 | |
---|
1511 | if (this.results != null) { |
---|
1512 | if (!locallyScopedConn.getHoldResultsOpenOverStatementClose()) { |
---|
1513 | this.results.realClose(false); |
---|
1514 | } |
---|
1515 | } |
---|
1516 | |
---|
1517 | CachedResultSetMetaData cachedMetaData = null; |
---|
1518 | |
---|
1519 | // If there isn't a limit clause in the SQL |
---|
1520 | // then limit the number of rows to return in |
---|
1521 | // an efficient manner. Only do this if |
---|
1522 | // setMaxRows() hasn't been used on any Statements |
---|
1523 | // generated from the current Connection (saves |
---|
1524 | // a query, and network traffic). |
---|
1525 | |
---|
1526 | if (useServerFetch()) { |
---|
1527 | this.results = createResultSetUsingServerFetch(sql); |
---|
1528 | |
---|
1529 | return this.results; |
---|
1530 | } |
---|
1531 | |
---|
1532 | CancelTask timeoutTask = null; |
---|
1533 | |
---|
1534 | String oldCatalog = null; |
---|
1535 | |
---|
1536 | try { |
---|
1537 | if (locallyScopedConn.getEnableQueryTimeouts() && |
---|
1538 | this.timeoutInMillis != 0 |
---|
1539 | && locallyScopedConn.versionMeetsMinimum(5, 0, 0)) { |
---|
1540 | timeoutTask = new CancelTask(this); |
---|
1541 | locallyScopedConn.getCancelTimer().schedule(timeoutTask, |
---|
1542 | this.timeoutInMillis); |
---|
1543 | } |
---|
1544 | |
---|
1545 | if (!locallyScopedConn.getCatalog().equals(this.currentCatalog)) { |
---|
1546 | oldCatalog = locallyScopedConn.getCatalog(); |
---|
1547 | locallyScopedConn.setCatalog(this.currentCatalog); |
---|
1548 | } |
---|
1549 | |
---|
1550 | // |
---|
1551 | // Check if we have cached metadata for this query... |
---|
1552 | // |
---|
1553 | |
---|
1554 | Field[] cachedFields = null; |
---|
1555 | |
---|
1556 | if (locallyScopedConn.getCacheResultSetMetadata()) { |
---|
1557 | cachedMetaData = locallyScopedConn.getCachedMetaData(sql); |
---|
1558 | |
---|
1559 | if (cachedMetaData != null) { |
---|
1560 | cachedFields = cachedMetaData.fields; |
---|
1561 | } |
---|
1562 | } |
---|
1563 | |
---|
1564 | if (locallyScopedConn.useMaxRows()) { |
---|
1565 | // We need to execute this all together |
---|
1566 | // So synchronize on the Connection's mutex (because |
---|
1567 | // even queries going through there synchronize |
---|
1568 | // on the connection |
---|
1569 | if (StringUtils.indexOfIgnoreCase(sql, "LIMIT") != -1) { //$NON-NLS-1$ |
---|
1570 | this.results = locallyScopedConn.execSQL(this, sql, |
---|
1571 | this.maxRows, null, this.resultSetType, |
---|
1572 | this.resultSetConcurrency, |
---|
1573 | doStreaming, |
---|
1574 | this.currentCatalog, cachedFields); |
---|
1575 | } else { |
---|
1576 | if (this.maxRows <= 0) { |
---|
1577 | executeSimpleNonQuery(locallyScopedConn, |
---|
1578 | "SET SQL_SELECT_LIMIT=DEFAULT"); |
---|
1579 | } else { |
---|
1580 | executeSimpleNonQuery(locallyScopedConn, |
---|
1581 | "SET SQL_SELECT_LIMIT=" + this.maxRows); |
---|
1582 | } |
---|
1583 | |
---|
1584 | statementBegins(); |
---|
1585 | |
---|
1586 | this.results = locallyScopedConn.execSQL(this, sql, -1, |
---|
1587 | null, this.resultSetType, |
---|
1588 | this.resultSetConcurrency, |
---|
1589 | doStreaming, |
---|
1590 | this.currentCatalog, cachedFields); |
---|
1591 | |
---|
1592 | if (oldCatalog != null) { |
---|
1593 | locallyScopedConn.setCatalog(oldCatalog); |
---|
1594 | } |
---|
1595 | } |
---|
1596 | } else { |
---|
1597 | statementBegins(); |
---|
1598 | |
---|
1599 | this.results = locallyScopedConn.execSQL(this, sql, -1, null, |
---|
1600 | this.resultSetType, this.resultSetConcurrency, |
---|
1601 | doStreaming, |
---|
1602 | this.currentCatalog, cachedFields); |
---|
1603 | } |
---|
1604 | |
---|
1605 | if (timeoutTask != null) { |
---|
1606 | if (timeoutTask.caughtWhileCancelling != null) { |
---|
1607 | throw timeoutTask.caughtWhileCancelling; |
---|
1608 | } |
---|
1609 | |
---|
1610 | timeoutTask.cancel(); |
---|
1611 | |
---|
1612 | locallyScopedConn.getCancelTimer().purge(); |
---|
1613 | |
---|
1614 | timeoutTask = null; |
---|
1615 | } |
---|
1616 | |
---|
1617 | synchronized (this.cancelTimeoutMutex) { |
---|
1618 | if (this.wasCancelled) { |
---|
1619 | SQLException cause = null; |
---|
1620 | |
---|
1621 | if (this.wasCancelledByTimeout) { |
---|
1622 | cause = new MySQLTimeoutException(); |
---|
1623 | } else { |
---|
1624 | cause = new MySQLStatementCancelledException(); |
---|
1625 | } |
---|
1626 | |
---|
1627 | resetCancelledState(); |
---|
1628 | |
---|
1629 | throw cause; |
---|
1630 | } |
---|
1631 | } |
---|
1632 | } finally { |
---|
1633 | this.statementExecuting.set(false); |
---|
1634 | |
---|
1635 | if (timeoutTask != null) { |
---|
1636 | timeoutTask.cancel(); |
---|
1637 | |
---|
1638 | locallyScopedConn.getCancelTimer().purge(); |
---|
1639 | } |
---|
1640 | |
---|
1641 | if (oldCatalog != null) { |
---|
1642 | locallyScopedConn.setCatalog(oldCatalog); |
---|
1643 | } |
---|
1644 | } |
---|
1645 | |
---|
1646 | this.lastInsertId = this.results.getUpdateID(); |
---|
1647 | |
---|
1648 | if (cachedMetaData != null) { |
---|
1649 | locallyScopedConn.initializeResultsMetadataFromCache(sql, cachedMetaData, |
---|
1650 | this.results); |
---|
1651 | } else { |
---|
1652 | if (this.connection.getCacheResultSetMetadata()) { |
---|
1653 | locallyScopedConn.initializeResultsMetadataFromCache(sql, |
---|
1654 | null /* will be created */, this.results); |
---|
1655 | } |
---|
1656 | } |
---|
1657 | |
---|
1658 | return this.results; |
---|
1659 | } |
---|
1660 | } |
---|
1661 | |
---|
1662 | protected void doPingInstead() throws SQLException { |
---|
1663 | synchronized (checkClosed()) { |
---|
1664 | if (this.pingTarget != null) { |
---|
1665 | this.pingTarget.doPing(); |
---|
1666 | } else { |
---|
1667 | this.connection.ping(); |
---|
1668 | } |
---|
1669 | |
---|
1670 | ResultSetInternalMethods fakeSelectOneResultSet = generatePingResultSet(); |
---|
1671 | this.results = fakeSelectOneResultSet; |
---|
1672 | } |
---|
1673 | } |
---|
1674 | |
---|
1675 | protected ResultSetInternalMethods generatePingResultSet() throws SQLException { |
---|
1676 | synchronized (checkClosed()) { |
---|
1677 | Field[] fields = { new Field(null, "1", Types.BIGINT, 1) }; |
---|
1678 | ArrayList<ResultSetRow> rows = new ArrayList<ResultSetRow>(); |
---|
1679 | byte[] colVal = new byte[] { (byte) '1' }; |
---|
1680 | |
---|
1681 | rows.add(new ByteArrayRow(new byte[][] { colVal }, getExceptionInterceptor())); |
---|
1682 | |
---|
1683 | return (ResultSetInternalMethods) DatabaseMetaData.buildResultSet(fields, rows, |
---|
1684 | this.connection); |
---|
1685 | } |
---|
1686 | } |
---|
1687 | |
---|
1688 | protected void executeSimpleNonQuery(MySQLConnection c, String nonQuery) |
---|
1689 | throws SQLException { |
---|
1690 | c.execSQL(this, nonQuery, |
---|
1691 | -1, null, ResultSet.TYPE_FORWARD_ONLY, |
---|
1692 | ResultSet.CONCUR_READ_ONLY, false, this.currentCatalog, |
---|
1693 | null, false).close(); |
---|
1694 | } |
---|
1695 | |
---|
1696 | /** |
---|
1697 | * Execute a SQL INSERT, UPDATE or DELETE statement. In addition SQL |
---|
1698 | * statements that return nothing such as SQL DDL statements can be executed |
---|
1699 | * Any IDs generated for AUTO_INCREMENT fields can be retrieved by casting |
---|
1700 | * this Statement to org.gjt.mm.mysql.Statement and calling the |
---|
1701 | * getLastInsertID() method. |
---|
1702 | * |
---|
1703 | * @param sql |
---|
1704 | * a SQL statement |
---|
1705 | * |
---|
1706 | * @return either a row count, or 0 for SQL commands |
---|
1707 | * |
---|
1708 | * @exception SQLException |
---|
1709 | * if a database access error occurs |
---|
1710 | */ |
---|
1711 | public int executeUpdate(String sql) throws SQLException { |
---|
1712 | return executeUpdate(sql, false, false); |
---|
1713 | } |
---|
1714 | |
---|
1715 | protected int executeUpdate(String sql, boolean isBatch, boolean returnGeneratedKeys) |
---|
1716 | throws SQLException { |
---|
1717 | |
---|
1718 | synchronized (checkClosed()) { |
---|
1719 | MySQLConnection locallyScopedConn = this.connection; |
---|
1720 | |
---|
1721 | char firstStatementChar = StringUtils.firstAlphaCharUc(sql, |
---|
1722 | findStartOfStatement(sql)); |
---|
1723 | |
---|
1724 | ResultSetInternalMethods rs = null; |
---|
1725 | |
---|
1726 | this.retrieveGeneratedKeys = returnGeneratedKeys; |
---|
1727 | |
---|
1728 | resetCancelledState(); |
---|
1729 | |
---|
1730 | checkNullOrEmptyQuery(sql); |
---|
1731 | |
---|
1732 | if (this.doEscapeProcessing) { |
---|
1733 | Object escapedSqlResult = EscapeProcessor.escapeSQL(sql, |
---|
1734 | this.connection.serverSupportsConvertFn(), this.connection); |
---|
1735 | |
---|
1736 | if (escapedSqlResult instanceof String) { |
---|
1737 | sql = (String) escapedSqlResult; |
---|
1738 | } else { |
---|
1739 | sql = ((EscapeProcessorResult) escapedSqlResult).escapedSql; |
---|
1740 | } |
---|
1741 | } |
---|
1742 | |
---|
1743 | if (locallyScopedConn.isReadOnly()) { |
---|
1744 | throw SQLError.createSQLException(Messages |
---|
1745 | .getString("Statement.42") //$NON-NLS-1$ |
---|
1746 | + Messages.getString("Statement.43"), //$NON-NLS-1$ |
---|
1747 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ |
---|
1748 | } |
---|
1749 | |
---|
1750 | if (StringUtils.startsWithIgnoreCaseAndWs(sql, "select")) { //$NON-NLS-1$ |
---|
1751 | throw SQLError.createSQLException(Messages |
---|
1752 | .getString("Statement.46"), //$NON-NLS-1$ |
---|
1753 | "01S03", getExceptionInterceptor()); //$NON-NLS-1$ |
---|
1754 | } |
---|
1755 | |
---|
1756 | if (this.results != null) { |
---|
1757 | if (!locallyScopedConn.getHoldResultsOpenOverStatementClose()) { |
---|
1758 | this.results.realClose(false); |
---|
1759 | } |
---|
1760 | } |
---|
1761 | |
---|
1762 | // The checking and changing of catalogs |
---|
1763 | // must happen in sequence, so synchronize |
---|
1764 | // on the same mutex that _conn is using |
---|
1765 | |
---|
1766 | CancelTask timeoutTask = null; |
---|
1767 | |
---|
1768 | String oldCatalog = null; |
---|
1769 | |
---|
1770 | try { |
---|
1771 | if (locallyScopedConn.getEnableQueryTimeouts() && |
---|
1772 | this.timeoutInMillis != 0 |
---|
1773 | && locallyScopedConn.versionMeetsMinimum(5, 0, 0)) { |
---|
1774 | timeoutTask = new CancelTask(this); |
---|
1775 | locallyScopedConn.getCancelTimer().schedule(timeoutTask, |
---|
1776 | this.timeoutInMillis); |
---|
1777 | } |
---|
1778 | |
---|
1779 | if (!locallyScopedConn.getCatalog().equals(this.currentCatalog)) { |
---|
1780 | oldCatalog = locallyScopedConn.getCatalog(); |
---|
1781 | locallyScopedConn.setCatalog(this.currentCatalog); |
---|
1782 | } |
---|
1783 | |
---|
1784 | // |
---|
1785 | // Only apply max_rows to selects |
---|
1786 | // |
---|
1787 | if (locallyScopedConn.useMaxRows()) { |
---|
1788 | executeSimpleNonQuery(locallyScopedConn, |
---|
1789 | "SET SQL_SELECT_LIMIT=DEFAULT"); |
---|
1790 | } |
---|
1791 | |
---|
1792 | statementBegins(); |
---|
1793 | |
---|
1794 | rs = locallyScopedConn.execSQL(this, sql, -1, null, |
---|
1795 | java.sql.ResultSet.TYPE_FORWARD_ONLY, |
---|
1796 | java.sql.ResultSet.CONCUR_READ_ONLY, false, |
---|
1797 | this.currentCatalog, |
---|
1798 | null /* force read of field info on DML */, |
---|
1799 | isBatch); |
---|
1800 | |
---|
1801 | if (timeoutTask != null) { |
---|
1802 | if (timeoutTask.caughtWhileCancelling != null) { |
---|
1803 | throw timeoutTask.caughtWhileCancelling; |
---|
1804 | } |
---|
1805 | |
---|
1806 | timeoutTask.cancel(); |
---|
1807 | |
---|
1808 | locallyScopedConn.getCancelTimer().purge(); |
---|
1809 | |
---|
1810 | timeoutTask = null; |
---|
1811 | } |
---|
1812 | |
---|
1813 | synchronized (this.cancelTimeoutMutex) { |
---|
1814 | if (this.wasCancelled) { |
---|
1815 | SQLException cause = null; |
---|
1816 | |
---|
1817 | if (this.wasCancelledByTimeout) { |
---|
1818 | cause = new MySQLTimeoutException(); |
---|
1819 | } else { |
---|
1820 | cause = new MySQLStatementCancelledException(); |
---|
1821 | } |
---|
1822 | |
---|
1823 | resetCancelledState(); |
---|
1824 | |
---|
1825 | throw cause; |
---|
1826 | } |
---|
1827 | } |
---|
1828 | } finally { |
---|
1829 | if (timeoutTask != null) { |
---|
1830 | timeoutTask.cancel(); |
---|
1831 | |
---|
1832 | locallyScopedConn.getCancelTimer().purge(); |
---|
1833 | } |
---|
1834 | |
---|
1835 | if (oldCatalog != null) { |
---|
1836 | locallyScopedConn.setCatalog(oldCatalog); |
---|
1837 | } |
---|
1838 | |
---|
1839 | if (!isBatch) { |
---|
1840 | this.statementExecuting.set(false); |
---|
1841 | } |
---|
1842 | } |
---|
1843 | |
---|
1844 | this.results = rs; |
---|
1845 | |
---|
1846 | rs.setFirstCharOfQuery(firstStatementChar); |
---|
1847 | |
---|
1848 | this.updateCount = rs.getUpdateCount(); |
---|
1849 | |
---|
1850 | int truncatedUpdateCount = 0; |
---|
1851 | |
---|
1852 | if (this.updateCount > Integer.MAX_VALUE) { |
---|
1853 | truncatedUpdateCount = Integer.MAX_VALUE; |
---|
1854 | } else { |
---|
1855 | truncatedUpdateCount = (int) this.updateCount; |
---|
1856 | } |
---|
1857 | |
---|
1858 | this.lastInsertId = rs.getUpdateID(); |
---|
1859 | |
---|
1860 | return truncatedUpdateCount; |
---|
1861 | } |
---|
1862 | } |
---|
1863 | |
---|
1864 | |
---|
1865 | /** |
---|
1866 | * @see StatementImpl#executeUpdate(String, int) |
---|
1867 | */ |
---|
1868 | public int executeUpdate(String sql, int returnGeneratedKeys) |
---|
1869 | throws SQLException { |
---|
1870 | synchronized (checkClosed()) { |
---|
1871 | if (returnGeneratedKeys == java.sql.Statement.RETURN_GENERATED_KEYS) { |
---|
1872 | MySQLConnection locallyScopedConn = this.connection; |
---|
1873 | |
---|
1874 | // If this is a 'REPLACE' query, we need to be able to parse |
---|
1875 | // the 'info' message returned from the server to determine |
---|
1876 | // the actual number of keys generated. |
---|
1877 | boolean readInfoMsgState = locallyScopedConn |
---|
1878 | .isReadInfoMsgEnabled(); |
---|
1879 | locallyScopedConn.setReadInfoMsgEnabled(true); |
---|
1880 | |
---|
1881 | try { |
---|
1882 | return executeUpdate(sql, false, true); |
---|
1883 | } finally { |
---|
1884 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
---|
1885 | } |
---|
1886 | } |
---|
1887 | |
---|
1888 | return executeUpdate(sql); |
---|
1889 | } |
---|
1890 | } |
---|
1891 | |
---|
1892 | /** |
---|
1893 | * @see StatementImpl#executeUpdate(String, int[]) |
---|
1894 | */ |
---|
1895 | public int executeUpdate(String sql, int[] generatedKeyIndices) |
---|
1896 | throws SQLException { |
---|
1897 | synchronized (checkClosed()) { |
---|
1898 | if ((generatedKeyIndices != null) && (generatedKeyIndices.length > 0)) { |
---|
1899 | checkClosed(); |
---|
1900 | |
---|
1901 | MySQLConnection locallyScopedConn = this.connection; |
---|
1902 | |
---|
1903 | // If this is a 'REPLACE' query, we need to be able to parse |
---|
1904 | // the 'info' message returned from the server to determine |
---|
1905 | // the actual number of keys generated. |
---|
1906 | boolean readInfoMsgState = locallyScopedConn |
---|
1907 | .isReadInfoMsgEnabled(); |
---|
1908 | locallyScopedConn.setReadInfoMsgEnabled(true); |
---|
1909 | |
---|
1910 | try { |
---|
1911 | return executeUpdate(sql, false, true); |
---|
1912 | } finally { |
---|
1913 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
---|
1914 | } |
---|
1915 | } |
---|
1916 | |
---|
1917 | return executeUpdate(sql); |
---|
1918 | } |
---|
1919 | } |
---|
1920 | |
---|
1921 | /** |
---|
1922 | * @see StatementImpl#executeUpdate(String, String[]) |
---|
1923 | */ |
---|
1924 | public int executeUpdate(String sql, String[] generatedKeyNames) |
---|
1925 | throws SQLException { |
---|
1926 | synchronized (checkClosed()) { |
---|
1927 | if ((generatedKeyNames != null) && (generatedKeyNames.length > 0)) { |
---|
1928 | MySQLConnection locallyScopedConn = this.connection; |
---|
1929 | // If this is a 'REPLACE' query, we need to be able to parse |
---|
1930 | // the 'info' message returned from the server to determine |
---|
1931 | // the actual number of keys generated. |
---|
1932 | boolean readInfoMsgState = this.connection |
---|
1933 | .isReadInfoMsgEnabled(); |
---|
1934 | locallyScopedConn.setReadInfoMsgEnabled(true); |
---|
1935 | |
---|
1936 | try { |
---|
1937 | return executeUpdate(sql, false, true); |
---|
1938 | } finally { |
---|
1939 | locallyScopedConn.setReadInfoMsgEnabled(readInfoMsgState); |
---|
1940 | } |
---|
1941 | } |
---|
1942 | |
---|
1943 | return executeUpdate(sql); |
---|
1944 | } |
---|
1945 | } |
---|
1946 | |
---|
1947 | /** |
---|
1948 | * Optimization to only use one calendar per-session, or calculate it for |
---|
1949 | * each call, depending on user configuration |
---|
1950 | */ |
---|
1951 | protected Calendar getCalendarInstanceForSessionOrNew() throws SQLException { |
---|
1952 | synchronized (checkClosed()) { |
---|
1953 | if (this.connection != null) { |
---|
1954 | return this.connection.getCalendarInstanceForSessionOrNew(); |
---|
1955 | } |
---|
1956 | // punt, no connection around |
---|
1957 | return new GregorianCalendar(); |
---|
1958 | } |
---|
1959 | } |
---|
1960 | |
---|
1961 | /** |
---|
1962 | * JDBC 2.0 Return the Connection that produced the Statement. |
---|
1963 | * |
---|
1964 | * @return the Connection that produced the Statement |
---|
1965 | * |
---|
1966 | * @throws SQLException |
---|
1967 | * if an error occurs |
---|
1968 | */ |
---|
1969 | public java.sql.Connection getConnection() throws SQLException { |
---|
1970 | synchronized (checkClosed()) { |
---|
1971 | return this.connection; |
---|
1972 | } |
---|
1973 | } |
---|
1974 | |
---|
1975 | /** |
---|
1976 | * JDBC 2.0 Determine the fetch direction. |
---|
1977 | * |
---|
1978 | * @return the default fetch direction |
---|
1979 | * |
---|
1980 | * @exception SQLException |
---|
1981 | * if a database-access error occurs |
---|
1982 | */ |
---|
1983 | public int getFetchDirection() throws SQLException { |
---|
1984 | return java.sql.ResultSet.FETCH_FORWARD; |
---|
1985 | } |
---|
1986 | |
---|
1987 | /** |
---|
1988 | * JDBC 2.0 Determine the default fetch size. |
---|
1989 | * |
---|
1990 | * @return the number of rows to fetch at a time |
---|
1991 | * |
---|
1992 | * @throws SQLException |
---|
1993 | * if an error occurs |
---|
1994 | */ |
---|
1995 | public int getFetchSize() throws SQLException { |
---|
1996 | synchronized (checkClosed()) { |
---|
1997 | return this.fetchSize; |
---|
1998 | } |
---|
1999 | } |
---|
2000 | |
---|
2001 | /** |
---|
2002 | * DOCUMENT ME! |
---|
2003 | * |
---|
2004 | * @return DOCUMENT ME! |
---|
2005 | * |
---|
2006 | * @throws SQLException |
---|
2007 | * DOCUMENT ME! |
---|
2008 | */ |
---|
2009 | public java.sql.ResultSet getGeneratedKeys() |
---|
2010 | throws SQLException { |
---|
2011 | synchronized (checkClosed()) { |
---|
2012 | if (!this.retrieveGeneratedKeys) { |
---|
2013 | throw SQLError.createSQLException(Messages.getString("Statement.GeneratedKeysNotRequested"), SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); |
---|
2014 | } |
---|
2015 | |
---|
2016 | if (this.batchedGeneratedKeys == null) { |
---|
2017 | if (lastQueryIsOnDupKeyUpdate) { |
---|
2018 | return getGeneratedKeysInternal(1); |
---|
2019 | } |
---|
2020 | return getGeneratedKeysInternal(); |
---|
2021 | } |
---|
2022 | |
---|
2023 | Field[] fields = new Field[1]; |
---|
2024 | fields[0] = new Field("", "GENERATED_KEY", Types.BIGINT, 17); //$NON-NLS-1$ //$NON-NLS-2$ |
---|
2025 | fields[0].setConnection(this.connection); |
---|
2026 | |
---|
2027 | return com.mysql.jdbc.ResultSetImpl.getInstance(this.currentCatalog, fields, |
---|
2028 | new RowDataStatic(this.batchedGeneratedKeys), this.connection, |
---|
2029 | this, false); |
---|
2030 | } |
---|
2031 | } |
---|
2032 | |
---|
2033 | /* |
---|
2034 | * Needed because there's no concept of super.super to get to this |
---|
2035 | * implementation from ServerPreparedStatement when dealing with batched |
---|
2036 | * updates. |
---|
2037 | */ |
---|
2038 | protected java.sql.ResultSet getGeneratedKeysInternal() |
---|
2039 | throws SQLException { |
---|
2040 | int numKeys = getUpdateCount(); |
---|
2041 | return getGeneratedKeysInternal(numKeys); |
---|
2042 | } |
---|
2043 | |
---|
2044 | protected java.sql.ResultSet getGeneratedKeysInternal(int numKeys) |
---|
2045 | throws SQLException { |
---|
2046 | synchronized (checkClosed()) { |
---|
2047 | Field[] fields = new Field[1]; |
---|
2048 | fields[0] = new Field("", "GENERATED_KEY", Types.BIGINT, 17); //$NON-NLS-1$ //$NON-NLS-2$ |
---|
2049 | fields[0].setConnection(this.connection); |
---|
2050 | fields[0].setUseOldNameMetadata(true); |
---|
2051 | |
---|
2052 | ArrayList<ResultSetRow> rowSet = new ArrayList<ResultSetRow>(); |
---|
2053 | |
---|
2054 | long beginAt = getLastInsertID(); |
---|
2055 | |
---|
2056 | if (beginAt < 0) { // looking at an UNSIGNED BIGINT that has overflowed |
---|
2057 | fields[0].setUnsigned(); |
---|
2058 | } |
---|
2059 | |
---|
2060 | if (this.results != null) { |
---|
2061 | String serverInfo = this.results.getServerInfo(); |
---|
2062 | |
---|
2063 | // |
---|
2064 | // Only parse server info messages for 'REPLACE' |
---|
2065 | // queries |
---|
2066 | // |
---|
2067 | if ((numKeys > 0) && (this.results.getFirstCharOfQuery() == 'R') |
---|
2068 | && (serverInfo != null) && (serverInfo.length() > 0)) { |
---|
2069 | numKeys = getRecordCountFromInfo(serverInfo); |
---|
2070 | } |
---|
2071 | |
---|
2072 | if ((beginAt != 0 /* BIGINT UNSIGNED can wrap the protocol representation */) && (numKeys > 0)) { |
---|
2073 | for (int i = 0; i < numKeys; i++) { |
---|
2074 | byte[][] row = new byte[1][]; |
---|
2075 | if (beginAt > 0) { |
---|
2076 | row[0] = StringUtils.getBytes(Long.toString(beginAt)); |
---|
2077 | } else { |
---|
2078 | byte[] asBytes = new byte[8]; |
---|
2079 | asBytes[7] = (byte) (beginAt & 0xff); |
---|
2080 | asBytes[6] = (byte) (beginAt >>> 8); |
---|
2081 | asBytes[5] = (byte) (beginAt >>> 16); |
---|
2082 | asBytes[4] = (byte) (beginAt >>> 24); |
---|
2083 | asBytes[3] = (byte) (beginAt >>> 32); |
---|
2084 | asBytes[2] = (byte) (beginAt >>> 40); |
---|
2085 | asBytes[1] = (byte) (beginAt >>> 48); |
---|
2086 | asBytes[0] = (byte) (beginAt >>> 56); |
---|
2087 | |
---|
2088 | BigInteger val = new BigInteger(1, asBytes); |
---|
2089 | |
---|
2090 | row[0] = val.toString().getBytes(); |
---|
2091 | } |
---|
2092 | rowSet.add(new ByteArrayRow(row, getExceptionInterceptor())); |
---|
2093 | beginAt += this.connection.getAutoIncrementIncrement(); |
---|
2094 | } |
---|
2095 | } |
---|
2096 | } |
---|
2097 | |
---|
2098 | com.mysql.jdbc.ResultSetImpl gkRs = com.mysql.jdbc.ResultSetImpl.getInstance(this.currentCatalog, fields, |
---|
2099 | new RowDataStatic(rowSet), this.connection, this, false); |
---|
2100 | |
---|
2101 | this.openResults.add(gkRs); |
---|
2102 | |
---|
2103 | return gkRs; |
---|
2104 | } |
---|
2105 | } |
---|
2106 | |
---|
2107 | /** |
---|
2108 | * Returns the id used when profiling |
---|
2109 | * |
---|
2110 | * @return the id used when profiling. |
---|
2111 | */ |
---|
2112 | protected int getId() { |
---|
2113 | return this.statementId; |
---|
2114 | } |
---|
2115 | |
---|
2116 | /** |
---|
2117 | * getLastInsertID returns the value of the auto_incremented key after an |
---|
2118 | * executeQuery() or excute() call. |
---|
2119 | * |
---|
2120 | * <p> |
---|
2121 | * This gets around the un-threadsafe behavior of "select LAST_INSERT_ID()" |
---|
2122 | * which is tied to the Connection that created this Statement, and |
---|
2123 | * therefore could have had many INSERTS performed before one gets a chance |
---|
2124 | * to call "select LAST_INSERT_ID()". |
---|
2125 | * </p> |
---|
2126 | * |
---|
2127 | * @return the last update ID. |
---|
2128 | */ |
---|
2129 | public long getLastInsertID() { |
---|
2130 | try { |
---|
2131 | synchronized (checkClosed()) { |
---|
2132 | return this.lastInsertId; |
---|
2133 | } |
---|
2134 | } catch (SQLException e) { |
---|
2135 | throw new RuntimeException(e); // evolve interface to throw SQLException |
---|
2136 | } |
---|
2137 | } |
---|
2138 | |
---|
2139 | /** |
---|
2140 | * getLongUpdateCount returns the current result as an update count, if the |
---|
2141 | * result is a ResultSet or there are no more results, -1 is returned. It |
---|
2142 | * should only be called once per result. |
---|
2143 | * |
---|
2144 | * <p> |
---|
2145 | * This method returns longs as MySQL server versions newer than 3.22.4 |
---|
2146 | * return 64-bit values for update counts |
---|
2147 | * </p> |
---|
2148 | * |
---|
2149 | * @return the current update count. |
---|
2150 | */ |
---|
2151 | public long getLongUpdateCount() { |
---|
2152 | try { |
---|
2153 | synchronized (checkClosed()) { |
---|
2154 | if (this.results == null) { |
---|
2155 | return -1; |
---|
2156 | } |
---|
2157 | |
---|
2158 | if (this.results.reallyResult()) { |
---|
2159 | return -1; |
---|
2160 | } |
---|
2161 | |
---|
2162 | return this.updateCount; |
---|
2163 | } |
---|
2164 | } catch (SQLException e) { |
---|
2165 | throw new RuntimeException(e); // evolve interface to throw SQLException |
---|
2166 | } |
---|
2167 | } |
---|
2168 | |
---|
2169 | /** |
---|
2170 | * The maxFieldSize limit (in bytes) is the maximum amount of data returned |
---|
2171 | * for any column value; it only applies to BINARY, VARBINARY, |
---|
2172 | * LONGVARBINARY, CHAR, VARCHAR and LONGVARCHAR columns. If the limit is |
---|
2173 | * exceeded, the excess data is silently discarded. |
---|
2174 | * |
---|
2175 | * @return the current max column size limit; zero means unlimited |
---|
2176 | * |
---|
2177 | * @exception SQLException |
---|
2178 | * if a database access error occurs |
---|
2179 | */ |
---|
2180 | public int getMaxFieldSize() throws SQLException { |
---|
2181 | synchronized (checkClosed()) { |
---|
2182 | return this.maxFieldSize; |
---|
2183 | } |
---|
2184 | } |
---|
2185 | |
---|
2186 | /** |
---|
2187 | * The maxRows limit is set to limit the number of rows that any ResultSet |
---|
2188 | * can contain. If the limit is exceeded, the excess rows are silently |
---|
2189 | * dropped. |
---|
2190 | * |
---|
2191 | * @return the current maximum row limit; zero means unlimited |
---|
2192 | * |
---|
2193 | * @exception SQLException |
---|
2194 | * if a database access error occurs |
---|
2195 | */ |
---|
2196 | public int getMaxRows() throws SQLException { |
---|
2197 | synchronized (checkClosed()) { |
---|
2198 | if (this.maxRows <= 0) { |
---|
2199 | return 0; |
---|
2200 | } |
---|
2201 | |
---|
2202 | return this.maxRows; |
---|
2203 | } |
---|
2204 | } |
---|
2205 | |
---|
2206 | /** |
---|
2207 | * getMoreResults moves to a Statement's next result. If it returns true, |
---|
2208 | * this result is a ResulSet. |
---|
2209 | * |
---|
2210 | * @return true if the next ResultSet is valid |
---|
2211 | * |
---|
2212 | * @exception SQLException |
---|
2213 | * if a database access error occurs |
---|
2214 | */ |
---|
2215 | public boolean getMoreResults() throws SQLException { |
---|
2216 | return getMoreResults(CLOSE_CURRENT_RESULT); |
---|
2217 | } |
---|
2218 | |
---|
2219 | /** |
---|
2220 | * @see StatementImpl#getMoreResults(int) |
---|
2221 | */ |
---|
2222 | public boolean getMoreResults(int current) throws SQLException { |
---|
2223 | synchronized (checkClosed()) { |
---|
2224 | if (this.results == null) { |
---|
2225 | return false; |
---|
2226 | } |
---|
2227 | |
---|
2228 | boolean streamingMode = createStreamingResultSet(); |
---|
2229 | |
---|
2230 | if (streamingMode) { |
---|
2231 | if (this.results.reallyResult()) { |
---|
2232 | while (this.results.next()); // need to drain remaining rows to get to server status |
---|
2233 | // which tells us whether more results actually exist or not |
---|
2234 | } |
---|
2235 | } |
---|
2236 | |
---|
2237 | ResultSetInternalMethods nextResultSet = this.results.getNextResultSet(); |
---|
2238 | |
---|
2239 | switch (current) { |
---|
2240 | case java.sql.Statement.CLOSE_CURRENT_RESULT: |
---|
2241 | |
---|
2242 | if (this.results != null) { |
---|
2243 | if (!streamingMode) { |
---|
2244 | this.results.close(); |
---|
2245 | } |
---|
2246 | |
---|
2247 | this.results.clearNextResult(); |
---|
2248 | } |
---|
2249 | |
---|
2250 | break; |
---|
2251 | |
---|
2252 | case java.sql.Statement.CLOSE_ALL_RESULTS: |
---|
2253 | |
---|
2254 | if (this.results != null) { |
---|
2255 | if (!streamingMode) { |
---|
2256 | this.results.close(); |
---|
2257 | } |
---|
2258 | |
---|
2259 | this.results.clearNextResult(); |
---|
2260 | } |
---|
2261 | |
---|
2262 | closeAllOpenResults(); |
---|
2263 | |
---|
2264 | break; |
---|
2265 | |
---|
2266 | case java.sql.Statement.KEEP_CURRENT_RESULT: |
---|
2267 | if (!this.connection.getDontTrackOpenResources()) { |
---|
2268 | this.openResults.add(this.results); |
---|
2269 | } |
---|
2270 | |
---|
2271 | this.results.clearNextResult(); // nobody besides us should |
---|
2272 | // ever need this value... |
---|
2273 | break; |
---|
2274 | |
---|
2275 | default: |
---|
2276 | throw SQLError.createSQLException(Messages |
---|
2277 | .getString("Statement.19"), //$NON-NLS-1$ |
---|
2278 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ |
---|
2279 | } |
---|
2280 | |
---|
2281 | this.results = nextResultSet; |
---|
2282 | |
---|
2283 | if (this.results == null) { |
---|
2284 | this.updateCount = -1; |
---|
2285 | this.lastInsertId = -1; |
---|
2286 | } else if (this.results.reallyResult()) { |
---|
2287 | this.updateCount = -1; |
---|
2288 | this.lastInsertId = -1; |
---|
2289 | } else { |
---|
2290 | this.updateCount = this.results.getUpdateCount(); |
---|
2291 | this.lastInsertId = this.results.getUpdateID(); |
---|
2292 | } |
---|
2293 | |
---|
2294 | return ((this.results != null) && this.results.reallyResult()) ? true |
---|
2295 | : false; |
---|
2296 | } |
---|
2297 | } |
---|
2298 | |
---|
2299 | /** |
---|
2300 | * The queryTimeout limit is the number of seconds the driver will wait for |
---|
2301 | * a Statement to execute. If the limit is exceeded, a SQLException is |
---|
2302 | * thrown. |
---|
2303 | * |
---|
2304 | * @return the current query timeout limit in seconds; 0 = unlimited |
---|
2305 | * |
---|
2306 | * @exception SQLException |
---|
2307 | * if a database access error occurs |
---|
2308 | */ |
---|
2309 | public int getQueryTimeout() throws SQLException { |
---|
2310 | synchronized (checkClosed()) { |
---|
2311 | return this.timeoutInMillis / 1000; |
---|
2312 | } |
---|
2313 | } |
---|
2314 | |
---|
2315 | /** |
---|
2316 | * Parses actual record count from 'info' message |
---|
2317 | * |
---|
2318 | * @param serverInfo |
---|
2319 | * DOCUMENT ME! |
---|
2320 | * |
---|
2321 | * @return DOCUMENT ME! |
---|
2322 | */ |
---|
2323 | private int getRecordCountFromInfo(String serverInfo) { |
---|
2324 | StringBuffer recordsBuf = new StringBuffer(); |
---|
2325 | int recordsCount = 0; |
---|
2326 | int duplicatesCount = 0; |
---|
2327 | |
---|
2328 | char c = (char) 0; |
---|
2329 | |
---|
2330 | int length = serverInfo.length(); |
---|
2331 | int i = 0; |
---|
2332 | |
---|
2333 | for (; i < length; i++) { |
---|
2334 | c = serverInfo.charAt(i); |
---|
2335 | |
---|
2336 | if (Character.isDigit(c)) { |
---|
2337 | break; |
---|
2338 | } |
---|
2339 | } |
---|
2340 | |
---|
2341 | recordsBuf.append(c); |
---|
2342 | i++; |
---|
2343 | |
---|
2344 | for (; i < length; i++) { |
---|
2345 | c = serverInfo.charAt(i); |
---|
2346 | |
---|
2347 | if (!Character.isDigit(c)) { |
---|
2348 | break; |
---|
2349 | } |
---|
2350 | |
---|
2351 | recordsBuf.append(c); |
---|
2352 | } |
---|
2353 | |
---|
2354 | recordsCount = Integer.parseInt(recordsBuf.toString()); |
---|
2355 | |
---|
2356 | StringBuffer duplicatesBuf = new StringBuffer(); |
---|
2357 | |
---|
2358 | for (; i < length; i++) { |
---|
2359 | c = serverInfo.charAt(i); |
---|
2360 | |
---|
2361 | if (Character.isDigit(c)) { |
---|
2362 | break; |
---|
2363 | } |
---|
2364 | } |
---|
2365 | |
---|
2366 | duplicatesBuf.append(c); |
---|
2367 | i++; |
---|
2368 | |
---|
2369 | for (; i < length; i++) { |
---|
2370 | c = serverInfo.charAt(i); |
---|
2371 | |
---|
2372 | if (!Character.isDigit(c)) { |
---|
2373 | break; |
---|
2374 | } |
---|
2375 | |
---|
2376 | duplicatesBuf.append(c); |
---|
2377 | } |
---|
2378 | |
---|
2379 | duplicatesCount = Integer.parseInt(duplicatesBuf.toString()); |
---|
2380 | |
---|
2381 | return recordsCount - duplicatesCount; |
---|
2382 | } |
---|
2383 | |
---|
2384 | /** |
---|
2385 | * getResultSet returns the current result as a ResultSet. It should only be |
---|
2386 | * called once per result. |
---|
2387 | * |
---|
2388 | * @return the current result set; null if there are no more |
---|
2389 | * |
---|
2390 | * @exception SQLException |
---|
2391 | * if a database access error occurs (why?) |
---|
2392 | */ |
---|
2393 | public java.sql.ResultSet getResultSet() throws SQLException { |
---|
2394 | synchronized (checkClosed()) { |
---|
2395 | return ((this.results != null) && this.results.reallyResult()) ? (java.sql.ResultSet) this.results |
---|
2396 | : null; |
---|
2397 | } |
---|
2398 | } |
---|
2399 | |
---|
2400 | /** |
---|
2401 | * JDBC 2.0 Determine the result set concurrency. |
---|
2402 | * |
---|
2403 | * @return CONCUR_UPDATABLE or CONCUR_READONLY |
---|
2404 | * |
---|
2405 | * @throws SQLException |
---|
2406 | * if an error occurs |
---|
2407 | */ |
---|
2408 | public int getResultSetConcurrency() throws SQLException { |
---|
2409 | synchronized (checkClosed()) { |
---|
2410 | return this.resultSetConcurrency; |
---|
2411 | } |
---|
2412 | } |
---|
2413 | |
---|
2414 | /** |
---|
2415 | * @see StatementImpl#getResultSetHoldability() |
---|
2416 | */ |
---|
2417 | public int getResultSetHoldability() throws SQLException { |
---|
2418 | return java.sql.ResultSet.HOLD_CURSORS_OVER_COMMIT; |
---|
2419 | } |
---|
2420 | |
---|
2421 | protected ResultSetInternalMethods getResultSetInternal() { |
---|
2422 | try { |
---|
2423 | synchronized (checkClosed()) { |
---|
2424 | return this.results; |
---|
2425 | } |
---|
2426 | } catch (SQLException e) { |
---|
2427 | return this.results; // you end up with the same thing as before, you'll get exception when actually trying to use it |
---|
2428 | } |
---|
2429 | } |
---|
2430 | |
---|
2431 | /** |
---|
2432 | * JDBC 2.0 Determine the result set type. |
---|
2433 | * |
---|
2434 | * @return the ResultSet type (SCROLL_SENSITIVE or SCROLL_INSENSITIVE) |
---|
2435 | * |
---|
2436 | * @throws SQLException |
---|
2437 | * if an error occurs. |
---|
2438 | */ |
---|
2439 | public int getResultSetType() throws SQLException { |
---|
2440 | synchronized (checkClosed()) { |
---|
2441 | return this.resultSetType; |
---|
2442 | } |
---|
2443 | } |
---|
2444 | |
---|
2445 | /** |
---|
2446 | * getUpdateCount returns the current result as an update count, if the |
---|
2447 | * result is a ResultSet or there are no more results, -1 is returned. It |
---|
2448 | * should only be called once per result. |
---|
2449 | * |
---|
2450 | * @return the current result as an update count. |
---|
2451 | * |
---|
2452 | * @exception SQLException |
---|
2453 | * if a database access error occurs |
---|
2454 | */ |
---|
2455 | public int getUpdateCount() throws SQLException { |
---|
2456 | synchronized (checkClosed()) { |
---|
2457 | if (this.results == null) { |
---|
2458 | return -1; |
---|
2459 | } |
---|
2460 | |
---|
2461 | if (this.results.reallyResult()) { |
---|
2462 | return -1; |
---|
2463 | } |
---|
2464 | |
---|
2465 | int truncatedUpdateCount = 0; |
---|
2466 | |
---|
2467 | if (this.results.getUpdateCount() > Integer.MAX_VALUE) { |
---|
2468 | truncatedUpdateCount = Integer.MAX_VALUE; |
---|
2469 | } else { |
---|
2470 | truncatedUpdateCount = (int) this.results.getUpdateCount(); |
---|
2471 | } |
---|
2472 | |
---|
2473 | return truncatedUpdateCount; |
---|
2474 | } |
---|
2475 | } |
---|
2476 | |
---|
2477 | /** |
---|
2478 | * The first warning reported by calls on this Statement is returned. A |
---|
2479 | * Statement's execute methods clear its java.sql.SQLWarning chain. |
---|
2480 | * Subsequent Statement warnings will be chained to this |
---|
2481 | * java.sql.SQLWarning. |
---|
2482 | * |
---|
2483 | * <p> |
---|
2484 | * The Warning chain is automatically cleared each time a statement is |
---|
2485 | * (re)executed. |
---|
2486 | * </p> |
---|
2487 | * |
---|
2488 | * <p> |
---|
2489 | * <B>Note:</B> If you are processing a ResultSet then any warnings |
---|
2490 | * associated with ResultSet reads will be chained on the ResultSet object. |
---|
2491 | * </p> |
---|
2492 | * |
---|
2493 | * @return the first java.sql.SQLWarning or null |
---|
2494 | * |
---|
2495 | * @exception SQLException |
---|
2496 | * if a database access error occurs |
---|
2497 | */ |
---|
2498 | public java.sql.SQLWarning getWarnings() throws SQLException { |
---|
2499 | synchronized (checkClosed()) { |
---|
2500 | |
---|
2501 | if (this.clearWarningsCalled) { |
---|
2502 | return null; |
---|
2503 | } |
---|
2504 | |
---|
2505 | if (this.connection.versionMeetsMinimum(4, 1, 0)) { |
---|
2506 | SQLWarning pendingWarningsFromServer = SQLError |
---|
2507 | .convertShowWarningsToSQLWarnings(this.connection); |
---|
2508 | |
---|
2509 | if (this.warningChain != null) { |
---|
2510 | this.warningChain.setNextWarning(pendingWarningsFromServer); |
---|
2511 | } else { |
---|
2512 | this.warningChain = pendingWarningsFromServer; |
---|
2513 | } |
---|
2514 | |
---|
2515 | return this.warningChain; |
---|
2516 | } |
---|
2517 | |
---|
2518 | return this.warningChain; |
---|
2519 | } |
---|
2520 | } |
---|
2521 | |
---|
2522 | /** |
---|
2523 | * Closes this statement, and frees resources. |
---|
2524 | * |
---|
2525 | * @param calledExplicitly |
---|
2526 | * was this called from close()? |
---|
2527 | * |
---|
2528 | * @throws SQLException |
---|
2529 | * if an error occurs |
---|
2530 | */ |
---|
2531 | protected void realClose(boolean calledExplicitly, boolean closeOpenResults) |
---|
2532 | throws SQLException { |
---|
2533 | MySQLConnection locallyScopedConn; |
---|
2534 | |
---|
2535 | try { |
---|
2536 | locallyScopedConn = checkClosed(); |
---|
2537 | } catch (SQLException sqlEx) { |
---|
2538 | return; // already closed |
---|
2539 | } |
---|
2540 | |
---|
2541 | synchronized (locallyScopedConn) { |
---|
2542 | |
---|
2543 | if (this.useUsageAdvisor) { |
---|
2544 | if (!calledExplicitly) { |
---|
2545 | String message = Messages.getString("Statement.63") //$NON-NLS-1$ |
---|
2546 | + Messages.getString("Statement.64"); //$NON-NLS-1$ |
---|
2547 | |
---|
2548 | this.eventSink.consumeEvent(new ProfilerEvent( |
---|
2549 | ProfilerEvent.TYPE_WARN, |
---|
2550 | "", //$NON-NLS-1$ |
---|
2551 | this.currentCatalog, this.connectionId, this.getId(), |
---|
2552 | -1, System.currentTimeMillis(), 0, |
---|
2553 | Constants.MILLIS_I18N, null, this.pointOfOrigin, |
---|
2554 | message)); |
---|
2555 | } |
---|
2556 | } |
---|
2557 | |
---|
2558 | if (closeOpenResults) { |
---|
2559 | closeOpenResults = !this.holdResultsOpenOverClose; |
---|
2560 | } |
---|
2561 | |
---|
2562 | if (closeOpenResults) { |
---|
2563 | if (this.results != null) { |
---|
2564 | |
---|
2565 | try { |
---|
2566 | this.results.close(); |
---|
2567 | } catch (Exception ex) { |
---|
2568 | ; |
---|
2569 | } |
---|
2570 | } |
---|
2571 | |
---|
2572 | closeAllOpenResults(); |
---|
2573 | } |
---|
2574 | |
---|
2575 | if (this.connection != null) { |
---|
2576 | if (this.maxRowsChanged) { |
---|
2577 | this.connection.unsetMaxRows(this); |
---|
2578 | } |
---|
2579 | |
---|
2580 | if (!this.connection.getDontTrackOpenResources()) { |
---|
2581 | this.connection.unregisterStatement(this); |
---|
2582 | } |
---|
2583 | } |
---|
2584 | |
---|
2585 | this.isClosed = true; |
---|
2586 | |
---|
2587 | this.results = null; |
---|
2588 | this.connection = null; |
---|
2589 | this.warningChain = null; |
---|
2590 | this.openResults = null; |
---|
2591 | this.batchedGeneratedKeys = null; |
---|
2592 | this.localInfileInputStream = null; |
---|
2593 | this.pingTarget = null; |
---|
2594 | } |
---|
2595 | } |
---|
2596 | |
---|
2597 | /** |
---|
2598 | * setCursorName defines the SQL cursor name that will be used by subsequent |
---|
2599 | * execute methods. This name can then be used in SQL positioned |
---|
2600 | * update/delete statements to identify the current row in the ResultSet |
---|
2601 | * generated by this statement. If a database doesn't support positioned |
---|
2602 | * update/delete, this method is a no-op. |
---|
2603 | * |
---|
2604 | * <p> |
---|
2605 | * <b>Note:</b> This MySQL driver does not support cursors. |
---|
2606 | * </p> |
---|
2607 | * |
---|
2608 | * @param name |
---|
2609 | * the new cursor name |
---|
2610 | * |
---|
2611 | * @exception SQLException |
---|
2612 | * if a database access error occurs |
---|
2613 | */ |
---|
2614 | public void setCursorName(String name) throws SQLException { |
---|
2615 | // No-op |
---|
2616 | } |
---|
2617 | |
---|
2618 | /** |
---|
2619 | * If escape scanning is on (the default), the driver will do escape |
---|
2620 | * substitution before sending the SQL to the database. |
---|
2621 | * |
---|
2622 | * @param enable |
---|
2623 | * true to enable; false to disable |
---|
2624 | * |
---|
2625 | * @exception SQLException |
---|
2626 | * if a database access error occurs |
---|
2627 | */ |
---|
2628 | public void setEscapeProcessing(boolean enable) |
---|
2629 | throws SQLException { |
---|
2630 | synchronized (checkClosed()) { |
---|
2631 | this.doEscapeProcessing = enable; |
---|
2632 | } |
---|
2633 | } |
---|
2634 | |
---|
2635 | /** |
---|
2636 | * JDBC 2.0 Give a hint as to the direction in which the rows in a result |
---|
2637 | * set will be processed. The hint applies only to result sets created using |
---|
2638 | * this Statement object. The default value is ResultSet.FETCH_FORWARD. |
---|
2639 | * |
---|
2640 | * @param direction |
---|
2641 | * the initial direction for processing rows |
---|
2642 | * |
---|
2643 | * @exception SQLException |
---|
2644 | * if a database-access error occurs or direction is not one |
---|
2645 | * of ResultSet.FETCH_FORWARD, ResultSet.FETCH_REVERSE, or |
---|
2646 | * ResultSet.FETCH_UNKNOWN |
---|
2647 | */ |
---|
2648 | public void setFetchDirection(int direction) throws SQLException { |
---|
2649 | switch (direction) { |
---|
2650 | case java.sql.ResultSet.FETCH_FORWARD: |
---|
2651 | case java.sql.ResultSet.FETCH_REVERSE: |
---|
2652 | case java.sql.ResultSet.FETCH_UNKNOWN: |
---|
2653 | break; |
---|
2654 | |
---|
2655 | default: |
---|
2656 | throw SQLError.createSQLException( |
---|
2657 | Messages.getString("Statement.5"), //$NON-NLS-1$ |
---|
2658 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ |
---|
2659 | } |
---|
2660 | } |
---|
2661 | |
---|
2662 | /** |
---|
2663 | * JDBC 2.0 Give the JDBC driver a hint as to the number of rows that should |
---|
2664 | * be fetched from the database when more rows are needed. The number of |
---|
2665 | * rows specified only affects result sets created using this statement. If |
---|
2666 | * the value specified is zero, then the hint is ignored. The default value |
---|
2667 | * is zero. |
---|
2668 | * |
---|
2669 | * @param rows |
---|
2670 | * the number of rows to fetch |
---|
2671 | * |
---|
2672 | * @exception SQLException |
---|
2673 | * if a database-access error occurs, or the condition 0 |
---|
2674 | * <= rows <= this.getMaxRows() is not satisfied. |
---|
2675 | */ |
---|
2676 | public void setFetchSize(int rows) throws SQLException { |
---|
2677 | synchronized (checkClosed()) { |
---|
2678 | if (((rows < 0) && (rows != Integer.MIN_VALUE)) |
---|
2679 | || ((this.maxRows != 0) && (this.maxRows != -1) && (rows > this |
---|
2680 | .getMaxRows()))) { |
---|
2681 | throw SQLError.createSQLException( |
---|
2682 | Messages.getString("Statement.7"), //$NON-NLS-1$ |
---|
2683 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ //$NON-NLS-2$ |
---|
2684 | } |
---|
2685 | |
---|
2686 | this.fetchSize = rows; |
---|
2687 | } |
---|
2688 | } |
---|
2689 | |
---|
2690 | public void setHoldResultsOpenOverClose(boolean holdResultsOpenOverClose) { |
---|
2691 | try { |
---|
2692 | synchronized (checkClosed()) { |
---|
2693 | this.holdResultsOpenOverClose = holdResultsOpenOverClose; |
---|
2694 | } |
---|
2695 | } catch (SQLException e) { |
---|
2696 | // FIXME: can't break interface at this point |
---|
2697 | } |
---|
2698 | } |
---|
2699 | |
---|
2700 | /** |
---|
2701 | * Sets the maxFieldSize |
---|
2702 | * |
---|
2703 | * @param max |
---|
2704 | * the new max column size limit; zero means unlimited |
---|
2705 | * |
---|
2706 | * @exception SQLException |
---|
2707 | * if size exceeds buffer size |
---|
2708 | */ |
---|
2709 | public void setMaxFieldSize(int max) throws SQLException { |
---|
2710 | synchronized (checkClosed()) { |
---|
2711 | if (max < 0) { |
---|
2712 | throw SQLError.createSQLException(Messages |
---|
2713 | .getString("Statement.11"), //$NON-NLS-1$ |
---|
2714 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ |
---|
2715 | } |
---|
2716 | |
---|
2717 | int maxBuf = (this.connection != null) ? this.connection |
---|
2718 | .getMaxAllowedPacket() : MysqlIO.getMaxBuf(); |
---|
2719 | |
---|
2720 | if (max > maxBuf) { |
---|
2721 | throw SQLError.createSQLException(Messages.getString( |
---|
2722 | "Statement.13", //$NON-NLS-1$ |
---|
2723 | new Object[] { Long.valueOf(maxBuf) }), //$NON-NLS-1$ |
---|
2724 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ |
---|
2725 | } |
---|
2726 | |
---|
2727 | this.maxFieldSize = max; |
---|
2728 | } |
---|
2729 | } |
---|
2730 | |
---|
2731 | /** |
---|
2732 | * Set the maximum number of rows |
---|
2733 | * |
---|
2734 | * @param max |
---|
2735 | * the new max rows limit; zero means unlimited |
---|
2736 | * |
---|
2737 | * @exception SQLException |
---|
2738 | * if a database access error occurs |
---|
2739 | * |
---|
2740 | * @see getMaxRows |
---|
2741 | */ |
---|
2742 | public void setMaxRows(int max) throws SQLException { |
---|
2743 | synchronized (checkClosed()) { |
---|
2744 | if ((max > MysqlDefs.MAX_ROWS) || (max < 0)) { |
---|
2745 | throw SQLError |
---|
2746 | .createSQLException( |
---|
2747 | Messages.getString("Statement.15") + max //$NON-NLS-1$ |
---|
2748 | + " > " //$NON-NLS-1$ //$NON-NLS-2$ |
---|
2749 | + MysqlDefs.MAX_ROWS + ".", SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ //$NON-NLS-2$ |
---|
2750 | } |
---|
2751 | |
---|
2752 | if (max == 0) { |
---|
2753 | max = -1; |
---|
2754 | } |
---|
2755 | |
---|
2756 | this.maxRows = max; |
---|
2757 | this.maxRowsChanged = true; |
---|
2758 | |
---|
2759 | if (this.maxRows == -1) { |
---|
2760 | this.connection.unsetMaxRows(this); |
---|
2761 | this.maxRowsChanged = false; |
---|
2762 | } else { |
---|
2763 | // Most people don't use setMaxRows() |
---|
2764 | // so don't penalize them |
---|
2765 | // with the extra query it takes |
---|
2766 | // to do it efficiently unless we need |
---|
2767 | // to. |
---|
2768 | this.connection.maxRowsChanged(this); |
---|
2769 | } |
---|
2770 | } |
---|
2771 | } |
---|
2772 | |
---|
2773 | /** |
---|
2774 | * Sets the queryTimeout limit |
---|
2775 | * |
---|
2776 | * @param seconds - |
---|
2777 | * the new query timeout limit in seconds |
---|
2778 | * |
---|
2779 | * @exception SQLException |
---|
2780 | * if a database access error occurs |
---|
2781 | */ |
---|
2782 | public void setQueryTimeout(int seconds) throws SQLException { |
---|
2783 | synchronized (checkClosed()) { |
---|
2784 | if (seconds < 0) { |
---|
2785 | throw SQLError.createSQLException(Messages |
---|
2786 | .getString("Statement.21"), //$NON-NLS-1$ |
---|
2787 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); //$NON-NLS-1$ |
---|
2788 | } |
---|
2789 | |
---|
2790 | this.timeoutInMillis = seconds * 1000; |
---|
2791 | } |
---|
2792 | } |
---|
2793 | |
---|
2794 | /** |
---|
2795 | * Sets the concurrency for result sets generated by this statement |
---|
2796 | * |
---|
2797 | * @param concurrencyFlag |
---|
2798 | * DOCUMENT ME! |
---|
2799 | */ |
---|
2800 | void setResultSetConcurrency(int concurrencyFlag) { |
---|
2801 | try { |
---|
2802 | synchronized (checkClosed()) { |
---|
2803 | this.resultSetConcurrency = concurrencyFlag; |
---|
2804 | } |
---|
2805 | } catch (SQLException e) { |
---|
2806 | // FIXME: Can't break interface atm, we'll get the exception later when |
---|
2807 | // you try and do something useful with a closed statement... |
---|
2808 | } |
---|
2809 | } |
---|
2810 | |
---|
2811 | /** |
---|
2812 | * Sets the result set type for result sets generated by this statement |
---|
2813 | * |
---|
2814 | * @param typeFlag |
---|
2815 | * DOCUMENT ME! |
---|
2816 | */ |
---|
2817 | void setResultSetType(int typeFlag) { |
---|
2818 | try { |
---|
2819 | synchronized (checkClosed()) { |
---|
2820 | this.resultSetType = typeFlag; |
---|
2821 | } |
---|
2822 | } catch (SQLException e) { |
---|
2823 | // FIXME: Can't break interface atm, we'll get the exception later when |
---|
2824 | // you try and do something useful with a closed statement... |
---|
2825 | } |
---|
2826 | } |
---|
2827 | |
---|
2828 | protected void getBatchedGeneratedKeys(java.sql.Statement batchedStatement) throws SQLException { |
---|
2829 | synchronized (checkClosed()) { |
---|
2830 | if (this.retrieveGeneratedKeys) { |
---|
2831 | java.sql.ResultSet rs = null; |
---|
2832 | |
---|
2833 | try { |
---|
2834 | rs = batchedStatement.getGeneratedKeys(); |
---|
2835 | |
---|
2836 | while (rs.next()) { |
---|
2837 | this.batchedGeneratedKeys |
---|
2838 | .add(new ByteArrayRow(new byte[][] { rs.getBytes(1) }, getExceptionInterceptor())); |
---|
2839 | } |
---|
2840 | } finally { |
---|
2841 | if (rs != null) { |
---|
2842 | rs.close(); |
---|
2843 | } |
---|
2844 | } |
---|
2845 | } |
---|
2846 | } |
---|
2847 | } |
---|
2848 | |
---|
2849 | protected void getBatchedGeneratedKeys(int maxKeys) throws SQLException { |
---|
2850 | synchronized (checkClosed()) { |
---|
2851 | if (this.retrieveGeneratedKeys) { |
---|
2852 | java.sql.ResultSet rs = null; |
---|
2853 | |
---|
2854 | try { |
---|
2855 | if (maxKeys == 0) |
---|
2856 | rs = getGeneratedKeysInternal(); |
---|
2857 | else |
---|
2858 | rs = getGeneratedKeysInternal(maxKeys); |
---|
2859 | |
---|
2860 | while (rs.next()) { |
---|
2861 | this.batchedGeneratedKeys |
---|
2862 | .add(new ByteArrayRow(new byte[][] { rs.getBytes(1) }, getExceptionInterceptor())); |
---|
2863 | } |
---|
2864 | } finally { |
---|
2865 | if (rs != null) { |
---|
2866 | rs.close(); |
---|
2867 | } |
---|
2868 | } |
---|
2869 | } |
---|
2870 | } |
---|
2871 | } |
---|
2872 | |
---|
2873 | /** |
---|
2874 | * @return |
---|
2875 | */ |
---|
2876 | private boolean useServerFetch() throws SQLException { |
---|
2877 | synchronized (checkClosed()) { |
---|
2878 | return this.connection.isCursorFetchEnabled() && this.fetchSize > 0 |
---|
2879 | && this.resultSetConcurrency == ResultSet.CONCUR_READ_ONLY |
---|
2880 | && this.resultSetType == ResultSet.TYPE_FORWARD_ONLY; |
---|
2881 | } |
---|
2882 | } |
---|
2883 | |
---|
2884 | public boolean isClosed() throws SQLException { |
---|
2885 | try { |
---|
2886 | synchronized (checkClosed()) { |
---|
2887 | return this.isClosed; |
---|
2888 | } |
---|
2889 | } catch (SQLException sqlEx) { |
---|
2890 | if (SQLError.SQL_STATE_CONNECTION_NOT_OPEN.equals(sqlEx.getSQLState())) { |
---|
2891 | return true; |
---|
2892 | } |
---|
2893 | |
---|
2894 | throw sqlEx; |
---|
2895 | } |
---|
2896 | } |
---|
2897 | |
---|
2898 | private boolean isPoolable = true; |
---|
2899 | |
---|
2900 | public boolean isPoolable() throws SQLException { |
---|
2901 | return this.isPoolable; |
---|
2902 | } |
---|
2903 | |
---|
2904 | public void setPoolable(boolean poolable) throws SQLException { |
---|
2905 | this.isPoolable = poolable; |
---|
2906 | } |
---|
2907 | |
---|
2908 | /** |
---|
2909 | * Returns true if this either implements the interface argument or is directly or indirectly a wrapper |
---|
2910 | * for an object that does. Returns false otherwise. If this implements the interface then return true, |
---|
2911 | * else if this is a wrapper then return the result of recursively calling <code>isWrapperFor</code> on the wrapped |
---|
2912 | * object. If this does not implement the interface and is not a wrapper, return false. |
---|
2913 | * This method should be implemented as a low-cost operation compared to <code>unwrap</code> so that |
---|
2914 | * callers can use this method to avoid expensive <code>unwrap</code> calls that may fail. If this method |
---|
2915 | * returns true then calling <code>unwrap</code> with the same argument should succeed. |
---|
2916 | * |
---|
2917 | * @param interfaces a Class defining an interface. |
---|
2918 | * @return true if this implements the interface or directly or indirectly wraps an object that does. |
---|
2919 | * @throws java.sql.SQLException if an error occurs while determining whether this is a wrapper |
---|
2920 | * for an object with the given interface. |
---|
2921 | * @since 1.6 |
---|
2922 | */ |
---|
2923 | public boolean isWrapperFor(Class<?> iface) throws SQLException { |
---|
2924 | checkClosed(); |
---|
2925 | |
---|
2926 | // This works for classes that aren't actually wrapping |
---|
2927 | // anything |
---|
2928 | return iface.isInstance(this); |
---|
2929 | } |
---|
2930 | |
---|
2931 | /** |
---|
2932 | * Returns an object that implements the given interface to allow access to non-standard methods, |
---|
2933 | * or standard methods not exposed by the proxy. |
---|
2934 | * The result may be either the object found to implement the interface or a proxy for that object. |
---|
2935 | * If the receiver implements the interface then that is the object. If the receiver is a wrapper |
---|
2936 | * and the wrapped object implements the interface then that is the object. Otherwise the object is |
---|
2937 | * the result of calling <code>unwrap</code> recursively on the wrapped object. If the receiver is not a |
---|
2938 | * wrapper and does not implement the interface, then an <code>SQLException</code> is thrown. |
---|
2939 | * |
---|
2940 | * @param iface A Class defining an interface that the result must implement. |
---|
2941 | * @return an object that implements the interface. May be a proxy for the actual implementing object. |
---|
2942 | * @throws java.sql.SQLException If no object found that implements the interface |
---|
2943 | * @since 1.6 |
---|
2944 | */ |
---|
2945 | public Object unwrap(Class<?> iface) throws java.sql.SQLException { |
---|
2946 | try { |
---|
2947 | // This works for classes that aren't actually wrapping |
---|
2948 | // anything |
---|
2949 | return Util.cast(iface, this); |
---|
2950 | } catch (ClassCastException cce) { |
---|
2951 | throw SQLError.createSQLException("Unable to unwrap to " + iface.toString(), |
---|
2952 | SQLError.SQL_STATE_ILLEGAL_ARGUMENT, getExceptionInterceptor()); |
---|
2953 | } |
---|
2954 | } |
---|
2955 | |
---|
2956 | protected int findStartOfStatement(String sql) { |
---|
2957 | int statementStartPos = 0; |
---|
2958 | |
---|
2959 | if (StringUtils.startsWithIgnoreCaseAndWs(sql, "/*")) { |
---|
2960 | statementStartPos = sql.indexOf("*/"); |
---|
2961 | |
---|
2962 | if (statementStartPos == -1) { |
---|
2963 | statementStartPos = 0; |
---|
2964 | } else { |
---|
2965 | statementStartPos += 2; |
---|
2966 | } |
---|
2967 | } else if (StringUtils.startsWithIgnoreCaseAndWs(sql, "--") |
---|
2968 | || StringUtils.startsWithIgnoreCaseAndWs(sql, "#")) { |
---|
2969 | statementStartPos = sql.indexOf('\n'); |
---|
2970 | |
---|
2971 | if (statementStartPos == -1) { |
---|
2972 | statementStartPos = sql.indexOf('\r'); |
---|
2973 | |
---|
2974 | if (statementStartPos == -1) { |
---|
2975 | statementStartPos = 0; |
---|
2976 | } |
---|
2977 | } |
---|
2978 | } |
---|
2979 | |
---|
2980 | return statementStartPos; |
---|
2981 | } |
---|
2982 | |
---|
2983 | private InputStream localInfileInputStream; |
---|
2984 | |
---|
2985 | protected final boolean version5013OrNewer; |
---|
2986 | |
---|
2987 | public InputStream getLocalInfileInputStream() { |
---|
2988 | return this.localInfileInputStream; |
---|
2989 | } |
---|
2990 | |
---|
2991 | public void setLocalInfileInputStream(InputStream stream) { |
---|
2992 | this.localInfileInputStream = stream; |
---|
2993 | } |
---|
2994 | |
---|
2995 | public void setPingTarget(PingTarget pingTarget) { |
---|
2996 | this.pingTarget = pingTarget; |
---|
2997 | } |
---|
2998 | |
---|
2999 | public ExceptionInterceptor getExceptionInterceptor() { |
---|
3000 | return this.exceptionInterceptor; |
---|
3001 | } |
---|
3002 | |
---|
3003 | protected boolean containsOnDuplicateKeyInString(String sql) { |
---|
3004 | return getOnDuplicateKeyLocation(sql) != -1; |
---|
3005 | } |
---|
3006 | |
---|
3007 | protected int getOnDuplicateKeyLocation(String sql) { |
---|
3008 | return StringUtils.indexOfIgnoreCaseRespectMarker(0, |
---|
3009 | sql, "ON DUPLICATE KEY UPDATE ", "\"'`", "\"'`", !this.connection.isNoBackslashEscapesSet()); |
---|
3010 | } |
---|
3011 | |
---|
3012 | private boolean closeOnCompletion; |
---|
3013 | |
---|
3014 | public void closeOnCompletion() throws SQLException { |
---|
3015 | synchronized (checkClosed()) { |
---|
3016 | closeOnCompletion = true; |
---|
3017 | } |
---|
3018 | } |
---|
3019 | |
---|
3020 | public boolean isCloseOnCompletion() throws SQLException { |
---|
3021 | synchronized (checkClosed()) { |
---|
3022 | return closeOnCompletion; |
---|
3023 | } |
---|
3024 | } |
---|
3025 | } |
---|