org.hibernate.envers.internal.entities.mapper.id.MultipleIdMapper Maven / Gradle / Ivy
/*
* 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.id;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.hibernate.envers.exception.AuditException;
import org.hibernate.envers.internal.entities.PropertyData;
import org.hibernate.internal.util.ReflectHelper;
/**
* @author Adam Warski (adam at warski dot org)
*/
public class MultipleIdMapper extends AbstractCompositeIdMapper implements SimpleIdMapperBuilder {
public MultipleIdMapper(Class compositeIdClass) {
super( compositeIdClass );
}
@Override
public void mapToMapFromId(Map data, Object obj) {
for ( IdMapper idMapper : ids.values() ) {
idMapper.mapToMapFromEntity( data, obj );
}
}
@Override
public void mapToMapFromEntity(Map data, Object obj) {
mapToMapFromId( data, obj );
}
@Override
public boolean mapToEntityFromMap(Object obj, Map data) {
boolean ret = true;
for ( IdMapper idMapper : ids.values() ) {
ret &= idMapper.mapToEntityFromMap( obj, data );
}
return ret;
}
@Override
public IdMapper prefixMappedProperties(String prefix) {
final MultipleIdMapper ret = new MultipleIdMapper( compositeIdClass );
for ( PropertyData propertyData : ids.keySet() ) {
final String propertyName = propertyData.getName();
ret.ids.put( propertyData, new SingleIdMapper( new PropertyData( prefix + propertyName, propertyData ) ) );
}
return ret;
}
@Override
public Object mapToIdFromEntity(Object data) {
if ( data == null ) {
return null;
}
final Object ret;
try {
ret = ReflectHelper.getDefaultConstructor( compositeIdClass ).newInstance();
}
catch (Exception e) {
throw new AuditException( e );
}
for ( SingleIdMapper mapper : ids.values() ) {
mapper.mapToEntityFromEntity( ret, data );
}
return ret;
}
@Override
public List mapToQueryParametersFromId(Object obj) {
final Map data = new LinkedHashMap();
mapToMapFromId( data, obj );
final List ret = new ArrayList();
for ( Map.Entry propertyData : data.entrySet() ) {
ret.add( new QueryParameterData( propertyData.getKey(), propertyData.getValue() ) );
}
return ret;
}
}