org.hibernate.envers.internal.entities.mapper.relation.OneToOneNotOwningMapper Maven / Gradle / Ivy

/*
 * Hibernate, Relational Persistence for Idiomatic Java
 *
 * Copyright (c) 2013, 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.envers.internal.entities.mapper.relation;

import java.io.Serializable;
import javax.persistence.OneToOne;

import org.hibernate.envers.internal.entities.PropertyData;
import org.hibernate.envers.internal.reader.AuditReaderImplementor;
import org.hibernate.envers.query.AuditEntity;

/**
 * Property mapper for not owning side of {@link OneToOne} relation.
 *
 * @author Adam Warski (adam at warski dot org)
 * @author HernпїЅn Chanfreau
 * @author Michal Skowronek (mskowr at o2 dot pl)
 * @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
 */
public class OneToOneNotOwningMapper extends AbstractOneToOneMapper {
	private final String owningReferencePropertyName;

	public OneToOneNotOwningMapper(
			String notOwningEntityName, String owningEntityName, String owningReferencePropertyName,
			PropertyData propertyData) {
		super( notOwningEntityName, owningEntityName, propertyData );
		this.owningReferencePropertyName = owningReferencePropertyName;
	}

	@Override
	protected Object queryForReferencedEntity(
			AuditReaderImplementor versionsReader, EntityInfo referencedEntity,
			Serializable primaryKey, Number revision) {
		return versionsReader.createQuery().forEntitiesAtRevision(
				referencedEntity.getEntityClass(),
				referencedEntity.getEntityName(), revision
		)
				.add( AuditEntity.relatedId( owningReferencePropertyName ).eq( primaryKey ) )
				.getSingleResult();
	}
}