source: Ballon/out/artifacts/geisa_artifact/WEB-INF/lib/mysql-connector-java-5.1.21/src/com/mysql/jdbc/RowDataStatic.java @ 848

/*
 Copyright (c) 2002, 2012, Oracle and/or its affiliates. All rights reserved.
 

  The MySQL Connector/J is licensed under the terms of the GPLv2
  <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, like most MySQL Connectors.
  There are special exceptions to the terms and conditions of the GPLv2 as it is applied to
  this software, see the FLOSS License Exception
  <http://www.mysql.com/about/legal/licensing/foss-exception.html>.

  This program is free software; you can redistribute it and/or modify it under the terms
  of the GNU General Public License as published by the Free Software Foundation; version 2
  of the License.

  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY;
  without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  See the GNU General Public License for more details.

  You should have received a copy of the GNU General Public License along with this
  program; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth
  Floor, Boston, MA 02110-1301  USA



 */
package com.mysql.jdbc;

import java.sql.SQLException;
import java.util.List;

/**
 * Represents an in-memory result set
 * 
 * @author dgan
 * @version $Id$
 */
public class RowDataStatic implements RowData {
        private Field[] metadata;
        
        private int index;

        ResultSetImpl owner;

        private List<ResultSetRow> rows;

        /**
         * Creates a new RowDataStatic object.
         * 
         * @param rows
         *            DOCUMENT ME!
         */
        public RowDataStatic(List<ResultSetRow> rows) {
                this.index = -1;
                this.rows = rows;
        }

        /**
         * DOCUMENT ME!
         * 
         * @param row
         *            DOCUMENT ME!
         */
        public void addRow(ResultSetRow row) {
                this.rows.add(row);
        }

        /**
         * Moves to after last.
         */
        public void afterLast() {
                this.index = this.rows.size();
        }

        /**
         * Moves to before first.
         */
        public void beforeFirst() {
                this.index = -1;
        }

        /**
         * DOCUMENT ME!
         */
        public void beforeLast() {
                this.index = this.rows.size() - 2;
        }

        /**
         * DOCUMENT ME!
         */
        public void close() {
        }

        /**
         * DOCUMENT ME!
         * 
         * @param atIndex
         *            DOCUMENT ME!
         * 
         * @return DOCUMENT ME!
         */
        public ResultSetRow getAt(int atIndex) throws SQLException {
                if ((atIndex < 0) || (atIndex >= this.rows.size())) {
                        return null;
                }

                return (this.rows.get(atIndex)).setMetadata(this.metadata);
        }

        /**
         * DOCUMENT ME!
         * 
         * @return DOCUMENT ME!
         */
        public int getCurrentRowNumber() {
                return this.index;
        }

        /**
         * @see com.mysql.jdbc.RowData#getOwner()
         */
        public ResultSetInternalMethods getOwner() {
                return this.owner;
        }

        /**
         * DOCUMENT ME!
         * 
         * @return DOCUMENT ME!
         */
        public boolean hasNext() {
                boolean hasMore = (this.index + 1) < this.rows.size();

                return hasMore;
        }

        /**
         * Returns true if we got the last element.
         * 
         * @return DOCUMENT ME!
         */
        public boolean isAfterLast() {
                return this.index >= this.rows.size();
        }

        /**
         * Returns if iteration has not occured yet.
         * 
         * @return DOCUMENT ME!
         */
        public boolean isBeforeFirst() {
                return (this.index == -1) && (this.rows.size() != 0);
        }

        /**
         * DOCUMENT ME!
         * 
         * @return DOCUMENT ME!
         */
        public boolean isDynamic() {
                return false;
        }

        /**
         * DOCUMENT ME!
         * 
         * @return DOCUMENT ME!
         */
        public boolean isEmpty() {
                return this.rows.size() == 0;
        }

        /**
         * DOCUMENT ME!
         * 
         * @return DOCUMENT ME!
         */
        public boolean isFirst() {
                return this.index == 0;
        }

        /**
         * DOCUMENT ME!
         * 
         * @return DOCUMENT ME!
         */
        public boolean isLast() {
                //
                // You can never be on the 'last' row of
                // an empty result set
                //
                if (this.rows.size() == 0) {
                        return false;
                }

                return (this.index == (this.rows.size() - 1));
        }

        /**
         * DOCUMENT ME!
         * 
         * @param rows
         *            DOCUMENT ME!
         */
        public void moveRowRelative(int rowsToMove) {
                this.index += rowsToMove;
        }

        /**
         * DOCUMENT ME!
         * 
         * @return DOCUMENT ME!
         */
        public ResultSetRow next() throws SQLException {
                this.index++;

                if (this.index < this.rows.size()) {
                        ResultSetRow row = this.rows.get(this.index);
                        
                        return row.setMetadata(this.metadata);
                }

                return null;
        }

        /**
         * DOCUMENT ME!
         * 
         * @param atIndex
         *            DOCUMENT ME!
         */
        public void removeRow(int atIndex) {
                this.rows.remove(atIndex);
        }

        /**
         * DOCUMENT ME!
         * 
         * @param newIndex
         *            DOCUMENT ME!
         */
        public void setCurrentRow(int newIndex) {
                this.index = newIndex;
        }

        /**
         * @see com.mysql.jdbc.RowData#setOwner(com.mysql.jdbc.ResultSetInternalMethods)
         */
        public void setOwner(ResultSetImpl rs) {
                this.owner = rs;
        }

        /**
         * DOCUMENT ME!
         * 
         * @return DOCUMENT ME!
         */
        public int size() {
                return this.rows.size();
        }

        public boolean wasEmpty() {
                return (this.rows != null && this.rows.size() == 0);
        }

        public void setMetadata(Field[] metadata) {
                this.metadata = metadata;
        }
}