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/*
* 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 java.io.Serializable;
import java.util.HashMap;
import java.util.Map;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.configuration.AuditConfiguration;
import org.hibernate.envers.entities.PropertyData;
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;
/**
* @author Adam Warski (adam at warski dot org)
* @author HernпїЅn Chanfreau
* @author Michal Skowronek (mskowr at o2 dot pl)
*/
public class ToOneIdMapper extends AbstractToOneMapper {
private final IdMapper delegate;
private final String referencedEntityName;
private final boolean nonInsertableFake;
public ToOneIdMapper(IdMapper delegate, PropertyData propertyData, String referencedEntityName, boolean nonInsertableFake) {
super(propertyData);
this.delegate = delegate;
this.referencedEntityName = referencedEntityName;
this.nonInsertableFake = nonInsertableFake;
}
public boolean mapToMapFromEntity(SessionImplementor session, Map data, Object newObj, Object oldObj) {
HashMap newData = new HashMap();
// 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 entry : newData.entrySet()) {
data.put(entry.getKey(), entry.getValue());
}
return checkModified(session, newObj, oldObj);
}
@Override
public void mapModifiedFlagsToMapFromEntity(SessionImplementor session, Map data, Object newObj, Object oldObj) {
if (getPropertyData().isUsingModifiedFlag()) {
data.put(getPropertyData().getModifiedFlagPropertyName(), checkModified(session, newObj, oldObj));
}
}
@Override
public void mapModifiedFlagsToMapForCollectionChange(String collectionPropertyName, Map data) {
if (getPropertyData().isUsingModifiedFlag()) {
data.put(getPropertyData().getModifiedFlagPropertyName(), collectionPropertyName.equals(getPropertyData().getName()));
}
}
protected boolean checkModified(SessionImplementor session, Object newObj, Object oldObj) {
//noinspection SimplifiableConditionalExpression
return nonInsertableFake ? false : !Tools.entitiesEqual(session, referencedEntityName, newObj, oldObj);
}
public void nullSafeMapToEntityFromMap(AuditConfiguration verCfg, Object obj, Map data, Object primaryKey,
AuditReaderImplementor versionsReader, Number revision) {
Object entityId = delegate.mapToIdFromMap(data);
Object value = null;
if (entityId != null) {
if (versionsReader.getFirstLevelCache().contains(referencedEntityName, revision, entityId)) {
value = versionsReader.getFirstLevelCache().get(referencedEntityName, revision, entityId);
} else {
EntityInfo referencedEntity = getEntityInfo(verCfg, referencedEntityName);
value = versionsReader.getSessionImplementor().getFactory().getEntityPersister(referencedEntityName).
createProxy((Serializable)entityId, new ToOneDelegateSessionImplementor(versionsReader, referencedEntity.getEntityClass(),
entityId, revision, verCfg));
}
}
setPropertyValue(obj, value);
}
}