/*
* 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.bridge;
import org.jboss.deployment.DeploymentException;
import org.jboss.ejb.plugins.cmp.jdbc.JDBCStoreManager;
import org.jboss.ejb.plugins.cmp.jdbc.metadata.JDBCCMPFieldMetaData;
import org.jboss.ejb.EntityEnterpriseContext;
import java.sql.PreparedStatement;
/**
* The base class for all automatically updated fields such as audit and version.
*
* @author <a href="mailto:alex@jboss.org">Alex Loubyansky</a>
* @version $Revision: 81030 $
*/
public abstract class JDBCCMP2xAutoUpdatedFieldBridge extends JDBCCMP2xFieldBridge
{
// Constructors
public JDBCCMP2xAutoUpdatedFieldBridge(JDBCStoreManager manager,
JDBCCMPFieldMetaData metadata)
throws DeploymentException
{
super(manager, metadata);
defaultFlags |= JDBCEntityBridge.ADD_TO_SET_ON_UPDATE;
}
public JDBCCMP2xAutoUpdatedFieldBridge(JDBCCMP2xFieldBridge cmpField)
throws DeploymentException
{
super(
(JDBCStoreManager) cmpField.getManager(),
cmpField.getFieldName(),
cmpField.getFieldType(),
cmpField.getJDBCType(),
cmpField.isReadOnly(), // should always be false?
cmpField.getReadTimeOut(),
cmpField.getPrimaryKeyClass(),
cmpField.getPrimaryKeyField(),
cmpField,
null, // it should not be a foreign key
cmpField.getColumnName()
);
defaultFlags |= JDBCEntityBridge.ADD_TO_SET_ON_UPDATE; // it should be redundant
cmpField.addDefaultFlag(JDBCEntityBridge.ADD_TO_SET_ON_UPDATE);
}
public void initInstance(EntityEnterpriseContext ctx)
{
setFirstVersion(ctx);
}
public int setInstanceParameters(PreparedStatement ps,
int parameterIndex,
EntityEnterpriseContext ctx)
{
Object value;
if(ctx.isValid())
{
// update
// generate new value unless it is already provided by the user
value = isDirty(ctx) ? getInstanceValue(ctx) : updateVersion(ctx);
}
else
{
// create
value = getInstanceValue(ctx);
}
return setArgumentParameters(ps, parameterIndex, value);
}
public abstract void setFirstVersion(EntityEnterpriseContext ctx);
public abstract Object updateVersion(EntityEnterpriseContext ctx);
}