/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This 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 software 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 software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb.plugins.cmp.jdbc.keygen;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.sql.ResultSet;
import javax.ejb.EJBException;
import org.jboss.ejb.plugins.cmp.jdbc.JDBCIdentityColumnCreateCommand;
import org.jboss.ejb.plugins.cmp.jdbc.JDBCUtil;
import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCEntityCommandMetaData;
import org.jboss.ejb.EntityEnterpriseContext;
import org.jboss.deployment.DeploymentException;
/**
* Create command for Microsoft SQL Server that uses the value from an IDENTITY
* columns. By default uses "SELECT SCOPE_IDENTITY()" to reduce the impact of
* triggers; can be overridden with "pk-sql" attribute e.g. for V7.
*
* @author <a href="mailto:jeremy@boynes.com">Jeremy Boynes</a>
* @version $Revision: 81030 $
*/
public class JDBCSQLServerCreateCommand extends JDBCIdentityColumnCreateCommand
{
protected void initEntityCommand(JDBCEntityCommandMetaData entityCommand) throws DeploymentException
{
super.initEntityCommand(entityCommand);
pkSQL = entityCommand.getAttribute("pk-sql");
if(pkSQL == null)
{
pkSQL = "SELECT SCOPE_IDENTITY()";
}
}
protected void initInsertSQL()
{
super.initInsertSQL();
insertSQL = insertSQL + "; " + pkSQL;
}
protected int executeInsert(int index, PreparedStatement ps, EntityEnterpriseContext ctx) throws SQLException
{
ps.execute();
ResultSet rs = null;
try
{
int rows = ps.getUpdateCount();
if(rows != 1)
{
throw new EJBException("Expected updateCount of 1, got " + rows);
}
if(ps.getMoreResults() == false)
{
throw new EJBException("Expected ResultSet but got an updateCount. Is NOCOUNT set for all triggers?");
}
rs = ps.getResultSet();
if(!rs.next())
{
throw new EJBException("ResultSet was empty");
}
pkField.loadInstanceResults(rs, 1, ctx);
return rows;
}
catch(RuntimeException e)
{
throw e;
}
catch(Exception e)
{
// throw EJBException to force a rollback as the row has been inserted
throw new EJBException("Error extracting generated keys", e);
}
finally
{
JDBCUtil.safeClose(rs);
}
}
}