/*
*
* The DbUnit Database Testing Framework
* Copyright (C)2002-2004, DbUnit.org
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
package org.dbunit.operation;
import java.util.ArrayList;
import java.util.BitSet;
import java.util.List;
import org.dbunit.database.IDatabaseConnection;
import org.dbunit.dataset.Column;
import org.dbunit.dataset.DataSetException;
import org.dbunit.dataset.DataSetUtils;
import org.dbunit.dataset.ITableMetaData;
import org.dbunit.dataset.NoPrimaryKeyException;
/**
* Updates the database from the dataset contents. This operation assumes that
* table data already exists in the database and fails if this is not the case.
* @author Manuel Laflamme
* @version $Revision: 473 $
* @since Feb 19, 2002
*/
public class UpdateOperation extends AbstractBatchOperation
{
UpdateOperation()
{
}
////////////////////////////////////////////////////////////////////////////
// AbstractBatchOperation class
public OperationData getOperationData(ITableMetaData metaData, BitSet ignoreMapping, IDatabaseConnection connection) throws DataSetException
{
Column[] columns = metaData.getColumns();
Column[] primaryKeys = metaData.getPrimaryKeys();
// cannot construct where clause if no primary key
if (primaryKeys.length == 0)
{
throw new NoPrimaryKeyException(metaData.getTableName());
}
// update table
StringBuffer sqlBuffer = new StringBuffer(128);
sqlBuffer.append("update ");
sqlBuffer.append(getQualifiedName(connection.getSchema(),
metaData.getTableName(), connection));
// set
boolean firstSet = true;
List columnList = new ArrayList(columns.length);
sqlBuffer.append(" set ");
for (int i = 0; i < columns.length; i++)
{
Column column = columns[i];
// set if not primary key
if (DataSetUtils.getColumn(column.getColumnName(), primaryKeys) == null)
{
if (!firstSet)
{
sqlBuffer.append(", ");
}
firstSet = false;
// escape column name
String columnName = getQualifiedName(null,
column.getColumnName(), connection);
sqlBuffer.append(columnName);
sqlBuffer.append(" = ?");
columnList.add(column);
}
}
// where
sqlBuffer.append(" where ");
for (int i = 0; i < primaryKeys.length; i++)
{
Column column = primaryKeys[i];
if (i > 0)
{
sqlBuffer.append(" and ");
}
// escape column name
String columnName = getQualifiedName(null,
column.getColumnName(), connection);
sqlBuffer.append(columnName);
sqlBuffer.append(" = ?");
columnList.add(column);
}
return new OperationData(sqlBuffer.toString(),
(Column[])columnList.toArray(new Column[0]));
}
}