//$Id: AbstractReassociateEventListener.java 10948 2006-12-07 21:53:10Z steve.ebersole@jboss.com $
package org.hibernate.event.def;
import java.io.Serializable;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.hibernate.LockMode;
import org.hibernate.engine.EntityEntry;
import org.hibernate.engine.EntityKey;
import org.hibernate.engine.Status;
import org.hibernate.engine.Versioning;
import org.hibernate.event.AbstractEvent;
import org.hibernate.event.EventSource;
import org.hibernate.persister.entity.EntityPersister;
import org.hibernate.pretty.MessageHelper;
import org.hibernate.type.TypeFactory;
/**
* A convenience base class for listeners that respond to requests to reassociate an entity
* to a session ( such as through lock() or update() ).
*
* @author Gavin King
*/
public class AbstractReassociateEventListener implements Serializable {
private static final Logger log = LoggerFactory.getLogger( AbstractReassociateEventListener.class );
/**
* Associates a given entity (either transient or associated with another session) to
* the given session.
*
* @param event The event triggering the re-association
* @param object The entity to be associated
* @param id The id of the entity.
* @param persister The entity's persister instance.
*
* @return An EntityEntry representing the entity within this session.
*/
protected final EntityEntry reassociate(AbstractEvent event, Object object, Serializable id, EntityPersister persister) {
if ( log.isTraceEnabled() ) {
log.trace(
"reassociating transient instance: " +
MessageHelper.infoString( persister, id, event.getSession().getFactory() )
);
}
EventSource source = event.getSession();
EntityKey key = new EntityKey( id, persister, source.getEntityMode() );
source.getPersistenceContext().checkUniqueness( key, object );
//get a snapshot
Object[] values = persister.getPropertyValues( object, source.getEntityMode() );
TypeFactory.deepCopy(
values,
persister.getPropertyTypes(),
persister.getPropertyUpdateability(),
values,
source
);
Object version = Versioning.getVersion( values, persister );
EntityEntry newEntry = source.getPersistenceContext().addEntity(
object,
Status.MANAGED,
values,
key,
version,
LockMode.NONE,
true,
persister,
false,
true //will be ignored, using the existing Entry instead
);
new OnLockVisitor( source, id, object ).process( object, persister );
persister.afterReassociate( object, source );
return newEntry;
}
}