org.hibernate.event.internal.EntityCopyNotAllowedObserver Maven / Gradle / Ivy
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2014, Red Hat Inc. or third-party contributors as
* indicated by the @author tags or express copyright attribution
* statements applied by the authors. All third-party contributions are
* distributed under license by Red Hat Inc.
*
* This copyrighted material is made available to anyone wishing to use, modify,
* copy, or redistribute it subject to the terms and conditions of the GNU
* Lesser General Public License, as published by the Free Software Foundation.
*
* This program 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 distribution; if not, write to:
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor
* Boston, MA 02110-1301 USA
*/
package org.hibernate.event.internal;
import org.hibernate.AssertionFailure;
import org.hibernate.event.spi.EntityCopyObserver;
import org.hibernate.event.spi.EventSource;
import org.hibernate.pretty.MessageHelper;
/**
* @author Gail Badner
*/
public class EntityCopyNotAllowedObserver implements EntityCopyObserver {
public static final String SHORT_NAME = "disallow";
@Override
public void entityCopyDetected(
Object managedEntity,
Object mergeEntity1,
Object mergeEntity2,
EventSource session) {
if ( mergeEntity1 == managedEntity && mergeEntity2 == managedEntity) {
throw new AssertionFailure( "entity1 and entity2 are the same as managedEntity; must be different." );
}
final String managedEntityString = MessageHelper.infoString(
session.getEntityName( managedEntity ),
session.getIdentifier( managedEntity )
);
throw new IllegalStateException(
"Multiple representations of the same entity " + managedEntityString + " are being merged. " +
getManagedOrDetachedEntityString( managedEntity, mergeEntity1 ) + "; " +
getManagedOrDetachedEntityString( managedEntity, mergeEntity2 )
);
}
private String getManagedOrDetachedEntityString(Object managedEntity, Object entity ) {
if ( entity == managedEntity) {
return "Managed: [" + entity + "]";
}
else {
return "Detached: [" + entity + "]";
}
}
public void clear() {
// Nothing to do
}
@Override
public void topLevelMergeComplete(EventSource session) {
// Nothing to do
}
}