/*
* JBoss, Home of Professional Open Source.
* Copyright 2006, 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.jdbc2.keygen;
import org.jboss.deployment.DeploymentException;
import org.jboss.ejb.EntityEnterpriseContext;
import org.jboss.ejb.plugins.cmp.jdbc.JDBCUtil;
import org.jboss.ejb.plugins.cmp.jdbc.bridge.JDBCFieldBridge;
import org.jboss.ejb.plugins.cmp.jdbc2.CreateCommand;
import org.jboss.ejb.plugins.cmp.jdbc2.JDBCStoreManager2;
import org.jboss.ejb.plugins.cmp.jdbc2.PersistentContext;
import org.jboss.ejb.plugins.cmp.jdbc2.bridge.JDBCCMPFieldBridge2;
import org.jboss.ejb.plugins.cmp.jdbc2.bridge.JDBCEntityBridge2;
import org.jboss.logging.Logger;
import java.lang.reflect.Method;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.ejb.CreateException;
import javax.ejb.DuplicateKeyException;
/**
* Abstract create command
* @author <a href="mailto:jep@worldleaguesports.com">Jesper Pedersen</a>
* @version <tt>$Revision: 85945 $</tt>
*/
public abstract class AbstractCreateCommand
implements CreateCommand
{
protected JDBCEntityBridge2 entityBridge;
protected Logger log;
protected JDBCCMPFieldBridge2 pkField;
protected String pkSql;
public void init(JDBCStoreManager2 manager) throws DeploymentException
{
this.entityBridge = (JDBCEntityBridge2)manager.getEntityBridge();
this.log = Logger.getLogger(getClass().getName() + "." + entityBridge.getEntityName());
final JDBCFieldBridge[] pkFields = entityBridge.getPrimaryKeyFields();
if(pkFields.length > 1)
{
throw new DeploymentException("This entity-command cannot be used with composite primary keys!");
}
this.pkField = (JDBCCMPFieldBridge2) pkFields[0];
this.pkSql = "";
}
public Object execute(Method m, Object[] args, EntityEnterpriseContext ctx) throws CreateException
{
Object pk;
PersistentContext pctx = (PersistentContext) ctx.getPersistenceContext();
if(ctx.getId() == null)
{
Connection con = null;
PreparedStatement ps = null;
ResultSet rs = null;
try
{
if(log.isDebugEnabled())
{
log.debug("executing sql: " + pkSql);
}
con = entityBridge.getDataSource().getConnection();
ps = con.prepareStatement(pkSql);
rs = ps.executeQuery();
if(!rs.next())
{
throw new CreateException("pk-sql " + pkSql + " returned no results!");
}
pk = pkField.loadArgumentResults(rs, 1);
pctx.setFieldValue(pkField.getRowIndex(), pk);
pk = entityBridge.extractPrimaryKeyFromInstance(ctx);
}
catch(SQLException e)
{
log.error("Failed to execute pk sql. error code: " + e.getErrorCode() + ", sql state: " + e.getSQLState(), e);
throw new CreateException("Failed to execute pk sql: " + e.getMessage() +
", error code: " + e.getErrorCode() + ", sql state: " + e.getSQLState());
}
finally
{
JDBCUtil.safeClose(rs);
JDBCUtil.safeClose(ps);
JDBCUtil.safeClose(con);
}
if(pk == null)
{
log.error("Primary key for created instance is null.");
throw new CreateException("Primary key for created instance is null.");
}
pctx.setPk(pk);
}
else
{
// insert-after-ejb-post-create
try
{
pctx.flush();
}
catch(SQLException e)
{
if("23000".equals(e.getSQLState()))
{
throw new DuplicateKeyException("Unique key violation or invalid foreign key value: pk=" + ctx.getId());
}
else
{
throw new CreateException("Failed to create instance: pk=" +
ctx.getId() +
", state=" +
e.getSQLState() +
", msg=" + e.getMessage());
}
}
pk = ctx.getId();
}
return pk;
}
}