org.hibernate.engine.internal.EntityEntryExtraStateHolder 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.engine.internal;
import org.hibernate.engine.spi.EntityEntryExtraState;
/**
* Contains optional state from {@link org.hibernate.engine.spi.EntityEntry}.
*
* @author Emmanuel Bernard
*/
public class EntityEntryExtraStateHolder implements EntityEntryExtraState {
private EntityEntryExtraState next;
private Object[] deletedState;
public Object[] getDeletedState() {
return deletedState;
}
public void setDeletedState(Object[] deletedState) {
this.deletedState = deletedState;
}
//the following methods are handling extraState contracts.
//they are not shared by a common superclass to avoid alignment padding
//we are trading off duplication for padding efficiency
@Override
public void addExtraState(EntityEntryExtraState extraState) {
if ( next == null ) {
next = extraState;
}
else {
next.addExtraState( extraState );
}
}
@Override
public T getExtraState(Class extraStateType) {
if ( next == null ) {
return null;
}
if ( extraStateType.isAssignableFrom( next.getClass() ) ) {
return (T) next;
}
else {
return next.getExtraState( extraStateType );
}
}
}