org.hibernate.event.internal.AbstractReassociateEventListener Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.event.internal;
import java.io.Serializable;
import org.hibernate.LockMode;
import org.hibernate.engine.internal.Versioning;
import org.hibernate.engine.spi.EntityEntry;
import org.hibernate.engine.spi.EntityKey;
import org.hibernate.engine.spi.Status;
import org.hibernate.event.spi.AbstractEvent;
import org.hibernate.event.spi.EventSource;
import org.hibernate.internal.CoreLogging;
import org.hibernate.persister.entity.EntityPersister;
import org.hibernate.pretty.MessageHelper;
import org.hibernate.type.TypeHelper;
import org.jboss.logging.Logger;
/**
* 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 abstract class AbstractReassociateEventListener implements Serializable {
private static final Logger log = CoreLogging.logger( 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.tracev(
"Reassociating transient instance: {0}",
MessageHelper.infoString( persister, id, event.getSession().getFactory() )
);
}
final EventSource source = event.getSession();
final EntityKey key = source.generateEntityKey( id, persister );
source.getPersistenceContext().checkUniqueness( key, object );
//get a snapshot
Object[] values = persister.getPropertyValues( object );
TypeHelper.deepCopy(
values,
persister.getPropertyTypes(),
persister.getPropertyUpdateability(),
values,
source
);
Object version = Versioning.getVersion( values, persister );
EntityEntry newEntry = source.getPersistenceContext().addEntity(
object,
( persister.isMutable() ? Status.MANAGED : Status.READ_ONLY ),
values,
key,
version,
LockMode.NONE,
true,
persister,
false
);
new OnLockVisitor( source, id, object ).process( object, persister );
persister.afterReassociate( object, source );
return newEntry;
}
}