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BasicCollectionMapper.java
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BasicCollectionMapper.java
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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.Collection;
import java.util.Map;
import org.hibernate.collection.spi.PersistentCollection;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.configuration.AuditConfiguration;
import org.hibernate.envers.entities.mapper.PropertyMapper;
import org.hibernate.envers.entities.mapper.relation.lazy.initializor.BasicCollectionInitializor;
import org.hibernate.envers.entities.mapper.relation.lazy.initializor.Initializor;
import org.hibernate.envers.reader.AuditReaderImplementor;
/**
* @author Adam Warski (adam at warski dot org)
*/
public class BasicCollectionMapper<T extends Collection> extends AbstractCollectionMapper<T> implements PropertyMapper {
protected final MiddleComponentData elementComponentData;
public BasicCollectionMapper(CommonCollectionMapperData commonCollectionMapperData,
Class<? extends T> collectionClass, Class<? extends T> proxyClass,
MiddleComponentData elementComponentData,
boolean ordinalInId, boolean revisionTypeInId) {
super(commonCollectionMapperData, collectionClass, proxyClass, ordinalInId, revisionTypeInId);
this.elementComponentData = elementComponentData;
}
protected Initializor<T> getInitializor(AuditConfiguration verCfg, AuditReaderImplementor versionsReader,
Object primaryKey, Number revision) {
return new BasicCollectionInitializor<T>(verCfg, versionsReader, commonCollectionMapperData.getQueryGenerator(),
primaryKey, revision, collectionClass, elementComponentData);
}
protected Collection getNewCollectionContent(PersistentCollection newCollection) {
return (Collection) newCollection;
}
protected Collection getOldCollectionContent(Serializable oldCollection) {
if (oldCollection == null) {
return null;
} else if (oldCollection instanceof Map) {
return ((Map) oldCollection).keySet();
} else {
return (Collection) oldCollection;
}
}
protected void mapToMapFromObject(SessionImplementor session, Map<String, Object> idData, Map<String, Object> data, Object changed) {
elementComponentData.getComponentMapper().mapToMapFromObject(session, idData, data, changed);
}
public boolean needsDataComparision() {
return elementComponentData.getComponentMapper().needsDataComparision();
}
}