/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2008, 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.envers.internal.tools.ReflectionTools;
import org.hibernate.internal.util.ReflectHelper;
import org.hibernate.property.Getter;
import org.hibernate.property.Setter;
/**
* @author Adam Warski (adam at warski dot org)
*/
public class EmbeddedIdMapper extends AbstractCompositeIdMapper implements SimpleIdMapperBuilder {
private PropertyData idPropertyData;
public EmbeddedIdMapper(PropertyData idPropertyData, Class compositeIdClass) {
super( compositeIdClass );
this.idPropertyData = idPropertyData;
}
@Override
public void mapToMapFromId(Map<String, Object> data, Object obj) {
for ( IdMapper idMapper : ids.values() ) {
idMapper.mapToMapFromEntity( data, obj );
}
}
@Override
public void mapToMapFromEntity(Map<String, Object> data, Object obj) {
if ( obj == null ) {
return;
}
final Getter getter = ReflectionTools.getGetter( obj.getClass(), idPropertyData );
mapToMapFromId( data, getter.get( obj ) );
}
@Override
public boolean mapToEntityFromMap(Object obj, Map data) {
if ( data == null || obj == null ) {
return false;
}
final Getter getter = ReflectionTools.getGetter( obj.getClass(), idPropertyData );
final Setter setter = ReflectionTools.getSetter( obj.getClass(), idPropertyData );
try {
final Object subObj = ReflectHelper.getDefaultConstructor( getter.getReturnType() ).newInstance();
boolean ret = true;
for ( IdMapper idMapper : ids.values() ) {
ret &= idMapper.mapToEntityFromMap( subObj, data );
}
if ( ret ) {
setter.set( obj, subObj, null );
}
return ret;
}
catch (Exception e) {
throw new AuditException( e );
}
}
@Override
public IdMapper prefixMappedProperties(String prefix) {
final EmbeddedIdMapper ret = new EmbeddedIdMapper( idPropertyData, 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 Getter getter = ReflectionTools.getGetter( data.getClass(), idPropertyData );
return getter.get( data );
}
@Override
public List<QueryParameterData> mapToQueryParametersFromId(Object obj) {
final Map<String, Object> data = new LinkedHashMap<String, Object>();
mapToMapFromId( data, obj );
final List<QueryParameterData> ret = new ArrayList<QueryParameterData>();
for ( Map.Entry<String, Object> propertyData : data.entrySet() ) {
ret.add( new QueryParameterData( propertyData.getKey(), propertyData.getValue() ) );
}
return ret;
}
}