org.hibernate.envers.internal.entities.mapper.id.AbstractCompositeIdMapper Maven / Gradle / Ivy
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Hibernate's entity version (audit/history) support
/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* License: GNU Lesser General Public License (LGPL), version 2.1 or later.
* See the lgpl.txt file in the root directory or .
*/
package org.hibernate.envers.internal.entities.mapper.id;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Map;
import org.hibernate.envers.exception.AuditException;
import org.hibernate.envers.internal.entities.PropertyData;
import org.hibernate.envers.internal.tools.Tools;
import org.hibernate.internal.util.ReflectHelper;
import org.hibernate.service.ServiceRegistry;
/**
* @author Adam Warski (adam at warski dot org)
* @author Lukasz Antoniak (lukasz dot antoniak at gmail dot com)
*/
public abstract class AbstractCompositeIdMapper extends AbstractIdMapper implements SimpleIdMapperBuilder {
protected final Class compositeIdClass;
protected Map ids;
protected AbstractCompositeIdMapper(Class compositeIdClass, ServiceRegistry serviceRegistry) {
super( serviceRegistry );
this.compositeIdClass = compositeIdClass;
ids = Tools.newLinkedHashMap();
}
@Override
public void add(PropertyData propertyData) {
ids.put( propertyData, new SingleIdMapper( getServiceRegistry(), propertyData ) );
}
@Override
public Object mapToIdFromMap(Map data) {
if ( data == null ) {
return null;
}
final Object compositeId = instantiateCompositeId();
for ( SingleIdMapper mapper : ids.values() ) {
if ( !mapper.mapToEntityFromMap( compositeId, data ) ) {
return null;
}
}
return compositeId;
}
protected Object instantiateCompositeId() {
return AccessController.doPrivileged(
new PrivilegedAction