/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, Red Hat Middleware LLC 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 Middleware LLC.
*
* 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.entities.mapper.relation;
import org.hibernate.collection.spi.PersistentCollection;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.configuration.AuditConfiguration;
import org.hibernate.envers.entities.EntityConfiguration;
import org.hibernate.envers.entities.PropertyData;
import org.hibernate.envers.entities.mapper.PersistentCollectionChangeData;
import org.hibernate.envers.entities.mapper.PropertyMapper;
import org.hibernate.envers.entities.mapper.id.IdMapper;
import org.hibernate.envers.entities.mapper.relation.lazy.ToOneDelegateSessionImplementor;
import org.hibernate.envers.reader.AuditReaderImplementor;
import org.hibernate.envers.tools.Tools;
import org.hibernate.envers.tools.reflection.ReflectionTools;
import org.hibernate.property.Setter;
import java.io.Serializable;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* @author Adam Warski (adam at warski dot org)
* @author Hern�n Chanfreau
*/
public class ToOneIdMapper implements PropertyMapper {
private final IdMapper delegate;
private final PropertyData propertyData;
private final String referencedEntityName;
private final boolean nonInsertableFake;
public ToOneIdMapper(IdMapper delegate, PropertyData propertyData, String referencedEntityName, boolean nonInsertableFake) {
this.delegate = delegate;
this.propertyData = propertyData;
this.referencedEntityName = referencedEntityName;
this.nonInsertableFake = nonInsertableFake;
}
public boolean mapToMapFromEntity(SessionImplementor session, Map<String, Object> data, Object newObj, Object oldObj) {
HashMap<String, Object> newData = new HashMap<String, Object>();
// If this property is originally non-insertable, but made insertable because it is in a many-to-one "fake"
// bi-directional relation, we always store the "old", unchaged data, to prevent storing changes made
// to this field. It is the responsibility of the collection to properly update it if it really changed.
delegate.mapToMapFromEntity(newData, nonInsertableFake ? oldObj : newObj);
for (Map.Entry<String, Object> entry : newData.entrySet()) {
data.put(entry.getKey(), entry.getValue());
}
//noinspection SimplifiableConditionalExpression
return nonInsertableFake ? false : !Tools.entitiesEqual(session, referencedEntityName, newObj, oldObj);
}
public void mapToEntityFromMap(AuditConfiguration verCfg, Object obj, Map data, Object primaryKey,
AuditReaderImplementor versionsReader, Number revision) {
if (obj == null) {
return;
}
Object entityId;
entityId = delegate.mapToIdFromMap(data);
Object value;
if (entityId == null) {
value = null;
} else {
if (versionsReader.getFirstLevelCache().contains(referencedEntityName, revision, entityId)) {
value = versionsReader.getFirstLevelCache().get(referencedEntityName, revision, entityId);
} else {
EntityConfiguration entCfg = verCfg.getEntCfg().get(referencedEntityName);
if(entCfg == null) {
// a relation marked as RelationTargetAuditMode.NOT_AUDITED
entCfg = verCfg.getEntCfg().getNotVersionEntityConfiguration(referencedEntityName);
}
Class<?> entityClass = ReflectionTools.loadClass(entCfg.getEntityClassName());
value = versionsReader.getSessionImplementor().getFactory().getEntityPersister(referencedEntityName).
createProxy((Serializable)entityId, new ToOneDelegateSessionImplementor(versionsReader, entityClass, entityId, revision, verCfg));
}
}
Setter setter = ReflectionTools.getSetter(obj.getClass(), propertyData);
setter.set(obj, value, null);
}
public List<PersistentCollectionChangeData> mapCollectionChanges(String referencingPropertyName,
PersistentCollection newColl,
Serializable oldColl,
Serializable id) {
return null;
}
}