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/*
* 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.util.HashMap;
import java.util.Map;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.RevisionType;
import org.hibernate.envers.configuration.spi.AuditConfiguration;
import org.hibernate.envers.internal.entities.PropertyData;
import org.hibernate.envers.internal.entities.mapper.id.IdMapper;
import org.hibernate.envers.internal.reader.AuditReaderImplementor;
import org.hibernate.envers.internal.tools.EntityTools;
import org.hibernate.envers.internal.tools.query.Parameters;
/**
* @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;
}
@Override
public boolean mapToMapFromEntity(SessionImplementor session, Map data, Object newObj,
Object oldObj) {
final 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 : !EntityTools.entitiesEqual( session, referencedEntityName, newObj, oldObj );
}
@Override
public void nullSafeMapToEntityFromMap(AuditConfiguration verCfg, Object obj, Map data, Object primaryKey,
AuditReaderImplementor versionsReader, Number revision) {
final 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 {
final EntityInfo referencedEntity = getEntityInfo( verCfg, referencedEntityName );
boolean ignoreNotFound = false;
if ( !referencedEntity.isAudited() ) {
final String referencingEntityName = verCfg.getEntCfg().getEntityNameForVersionsEntityName( (String) data.get( "$type$" ) );
ignoreNotFound = verCfg.getEntCfg().getRelationDescription( referencingEntityName, getPropertyData().getName() ).isIgnoreNotFound();
}
if ( ignoreNotFound ) {
// Eagerly loading referenced entity to silence potential (in case of proxy)
// EntityNotFoundException or ObjectNotFoundException. Assigning null reference.
value = ToOneEntityLoader.loadImmediate(
versionsReader, referencedEntity.getEntityClass(), referencedEntityName,
entityId, revision, RevisionType.DEL.equals( data.get( verCfg.getAuditEntCfg().getRevisionTypePropName() ) ),
verCfg
);
}
else {
value = ToOneEntityLoader.createProxyOrLoadImmediate(
versionsReader, referencedEntity.getEntityClass(), referencedEntityName,
entityId, revision, RevisionType.DEL.equals( data.get( verCfg.getAuditEntCfg().getRevisionTypePropName() ) ),
verCfg
);
}
}
}
setPropertyValue( obj, value );
}
public void addMiddleEqualToQuery(Parameters parameters, String idPrefix1, String prefix1,
String idPrefix2, String prefix2) {
delegate.addIdsEqualToQuery( parameters, prefix1, delegate, prefix2 );
}
}