/*
* 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.id;
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.hibernate.envers.entities.PropertyData;
import org.hibernate.envers.exception.AuditException;
import org.hibernate.envers.tools.reflection.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, String compositeIdClass) {
super(compositeIdClass);
this.idPropertyData = idPropertyData;
}
public void mapToMapFromId(Map<String, Object> data, Object obj) {
for (IdMapper idMapper : ids.values()) {
idMapper.mapToMapFromEntity(data, obj);
}
}
public void mapToMapFromEntity(Map<String, Object> data, Object obj) {
if (obj == null) {
return;
}
Getter getter = ReflectionTools.getGetter(obj.getClass(), idPropertyData);
mapToMapFromId(data, getter.get(obj));
}
public void mapToEntityFromMap(Object obj, Map data) {
if (data == null || obj == null) {
return;
}
Getter getter = ReflectionTools.getGetter(obj.getClass(), idPropertyData);
Setter setter = ReflectionTools.getSetter(obj.getClass(), idPropertyData);
try {
Object subObj = ReflectHelper.getDefaultConstructor( getter.getReturnType() ).newInstance();
setter.set(obj, subObj, null);
for (IdMapper idMapper : ids.values()) {
idMapper.mapToEntityFromMap(subObj, data);
}
} catch (Exception e) {
throw new AuditException(e);
}
}
public IdMapper prefixMappedProperties(String prefix) {
EmbeddedIdMapper ret = new EmbeddedIdMapper(idPropertyData, compositeIdClass);
for (PropertyData propertyData : ids.keySet()) {
String propertyName = propertyData.getName();
ret.ids.put(propertyData, new SingleIdMapper(new PropertyData(prefix + propertyName, propertyData)));
}
return ret;
}
public Object mapToIdFromEntity(Object data) {
if (data == null) {
return null;
}
Getter getter = ReflectionTools.getGetter(data.getClass(), idPropertyData);
return getter.get(data);
}
public List<QueryParameterData> mapToQueryParametersFromId(Object obj) {
Map<String, Object> data = new LinkedHashMap<String, Object>();
mapToMapFromId(data, obj);
List<QueryParameterData> ret = new ArrayList<QueryParameterData>();
for (Map.Entry<String, Object> propertyData : data.entrySet()) {
ret.add(new QueryParameterData(propertyData.getKey(), propertyData.getValue()));
}
return ret;
}
}