org.hibernate.envers.internal.entities.mapper.id.MultipleIdMapper 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.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import org.hibernate.Session;
import org.hibernate.envers.internal.entities.PropertyData;
import org.hibernate.service.ServiceRegistry;
/**
* @author Adam Warski (adam at warski dot org)
* @author Chris Cranford
*/
public class MultipleIdMapper extends AbstractCompositeIdMapper implements SimpleIdMapperBuilder {
public MultipleIdMapper(Class compositeIdClass, ServiceRegistry serviceRegistry) {
super( compositeIdClass, serviceRegistry );
}
@Override
public void add(PropertyData propertyData) {
ids.put( propertyData, resolveIdMapper( propertyData ) );
}
@Override
public void mapToMapFromId(Session session, Map data, Object obj) {
if ( compositeIdClass.isInstance( obj ) ) {
for ( Map.Entry entry : ids.entrySet() ) {
final PropertyData propertyData = entry.getKey();
final SingleIdMapper idMapper = entry.getValue();
if ( propertyData.getVirtualReturnClass() == null ) {
idMapper.mapToMapFromEntity( data, obj );
}
else {
idMapper.mapToMapFromId( session, data, obj );
}
}
}
else {
mapToMapFromId( data, obj );
}
}
@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) {
for ( IdMapper idMapper : ids.values() ) {
idMapper.mapToMapFromEntity( 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, getServiceRegistry() );
for ( PropertyData propertyData : ids.keySet() ) {
final String propertyName = propertyData.getName();
ret.ids.put( propertyData, resolveIdMapper( new PropertyData( prefix + propertyName, propertyData ) ) );
}
return ret;
}
@Override
public Object mapToIdFromEntity(Object data) {
if ( data == null ) {
return null;
}
final Object compositeId = instantiateCompositeId();
for ( SingleIdMapper mapper : ids.values() ) {
mapper.mapToEntityFromEntity( compositeId, data );
}
return compositeId;
}
@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;
}
private SingleIdMapper resolveIdMapper(PropertyData propertyData) {
if ( propertyData.getVirtualReturnClass() != null ) {
return new VirtualEntitySingleIdMapper( getServiceRegistry(), propertyData );
}
return new SingleIdMapper( getServiceRegistry(), propertyData );
}
}