/*
* 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.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.property.Getter;
import org.hibernate.property.Setter;
import org.hibernate.proxy.HibernateProxy;
/**
* @author Adam Warski (adam at warski dot org)
*/
public class SingleIdMapper extends AbstractIdMapper implements SimpleIdMapperBuilder {
private PropertyData propertyData;
public SingleIdMapper() {
}
public SingleIdMapper(PropertyData propertyData) {
this.propertyData = propertyData;
}
public void add(PropertyData propertyData) {
if (this.propertyData != null) {
throw new AuditException("Only one property can be added!");
}
this.propertyData = propertyData;
}
public boolean mapToEntityFromMap(Object obj, Map data) {
if (data == null || obj == null) {
return false;
}
Object value = data.get(propertyData.getName());
if (value == null) {
return false;
}
Setter setter = ReflectionTools.getSetter(obj.getClass(), propertyData);
setter.set(obj, value, null);
return true;
}
public Object mapToIdFromMap(Map data) {
if (data == null) {
return null;
}
return data.get(propertyData.getName());
}
public Object mapToIdFromEntity(Object data) {
if (data == null) {
return null;
}
if(data instanceof HibernateProxy) {
HibernateProxy hibernateProxy = (HibernateProxy) data;
return hibernateProxy.getHibernateLazyInitializer().getIdentifier();
} else {
Getter getter = ReflectionTools.getGetter(data.getClass(), propertyData);
return getter.get(data);
}
}
public void mapToMapFromId(Map<String, Object> data, Object obj) {
if (data != null) {
data.put(propertyData.getName(), obj);
}
}
public void mapToMapFromEntity(Map<String, Object> data, Object obj) {
if (obj == null) {
data.put(propertyData.getName(), null);
} else {
if(obj instanceof HibernateProxy) {
HibernateProxy hibernateProxy = (HibernateProxy)obj;
data.put(propertyData.getName(), hibernateProxy.getHibernateLazyInitializer().getIdentifier());
} else {
Getter getter = ReflectionTools.getGetter(obj.getClass(), propertyData);
data.put(propertyData.getName(), getter.get(obj));
}
}
}
public void mapToEntityFromEntity(Object objTo, Object objFrom) {
if (objTo == null || objFrom == null) {
return;
}
Getter getter = ReflectionTools.getGetter(objFrom.getClass(), propertyData);
Setter setter = ReflectionTools.getSetter(objTo.getClass(), propertyData);
setter.set(objTo, getter.get(objFrom), null);
}
public IdMapper prefixMappedProperties(String prefix) {
return new SingleIdMapper(new PropertyData(prefix + propertyData.getName(), propertyData));
}
public List<QueryParameterData> mapToQueryParametersFromId(Object obj) {
List<QueryParameterData> ret = new ArrayList<QueryParameterData>();
ret.add(new QueryParameterData(propertyData.getName(), obj));
return ret;
}
}