/*
* 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.relation.component;
import java.util.Map;
import org.hibernate.engine.spi.SessionImplementor;
import org.hibernate.envers.exception.AuditException;
import org.hibernate.envers.internal.entities.EntityInstantiator;
import org.hibernate.envers.internal.entities.PropertyData;
import org.hibernate.envers.internal.entities.mapper.CompositeMapperBuilder;
import org.hibernate.envers.internal.entities.mapper.MultiPropertyMapper;
import org.hibernate.envers.internal.entities.mapper.PropertyMapper;
import org.hibernate.envers.internal.entities.mapper.relation.ToOneIdMapper;
import org.hibernate.envers.internal.tools.query.Parameters;
import org.hibernate.internal.util.ReflectHelper;
/**
* @author Kristoffer Lundberg (kristoffer at cambio dot se)
*/
public class MiddleEmbeddableComponentMapper implements MiddleComponentMapper, CompositeMapperBuilder {
private final MultiPropertyMapper delegate;
private final Class componentClass;
public MiddleEmbeddableComponentMapper(MultiPropertyMapper delegate, Class componentClass) {
this.delegate = delegate;
this.componentClass = componentClass;
}
@Override
public Object mapToObjectFromFullMap(
EntityInstantiator entityInstantiator,
Map<String, Object> data,
Object dataObject,
Number revision) {
try {
final Object componentInstance = dataObject != null ? dataObject : ReflectHelper.getDefaultConstructor(
componentClass
).newInstance();
delegate.mapToEntityFromMap(
entityInstantiator.getAuditConfiguration(), componentInstance, data, null,
entityInstantiator.getAuditReaderImplementor(), revision
);
return componentInstance;
}
catch (Exception e) {
throw new AuditException( e );
}
}
@Override
public void mapToMapFromObject(
SessionImplementor session,
Map<String, Object> idData,
Map<String, Object> data,
Object obj) {
delegate.mapToMapFromEntity( session, data, obj, obj );
}
@Override
public void addMiddleEqualToQuery(
Parameters parameters,
String idPrefix1,
String prefix1,
String idPrefix2,
String prefix2) {
addMiddleEqualToQuery( delegate, parameters, idPrefix1, prefix1, idPrefix2, prefix2 );
}
protected void addMiddleEqualToQuery(
CompositeMapperBuilder compositeMapper,
Parameters parameters,
String idPrefix1,
String prefix1,
String idPrefix2,
String prefix2) {
for ( final Map.Entry<PropertyData, PropertyMapper> entry : compositeMapper.getProperties().entrySet() ) {
final String propertyName = entry.getKey().getName();
final PropertyMapper nestedMapper = entry.getValue();
if ( nestedMapper instanceof CompositeMapperBuilder ) {
addMiddleEqualToQuery(
(CompositeMapperBuilder) nestedMapper,
parameters,
idPrefix1,
prefix1,
idPrefix2,
prefix2
);
}
else if ( nestedMapper instanceof ToOneIdMapper ) {
((ToOneIdMapper) nestedMapper).addMiddleEqualToQuery(
parameters,
idPrefix1,
prefix1,
idPrefix2,
prefix2
);
}
else {
// (p1.prop = p2.prop or (p1.prop is null and p2.prop is null))
Parameters sub1 = parameters.addSubParameters( "or" );
sub1.addWhere( prefix1 + '.' + propertyName, false, "=", prefix2 + '.' + propertyName, false );
Parameters sub2 = sub1.addSubParameters( "and" );
sub2.addNullRestriction( prefix1 + '.' + propertyName, false );
sub2.addNullRestriction( prefix2 + '.' + propertyName, false );
}
}
}
@Override
public CompositeMapperBuilder addComponent(PropertyData propertyData, Class componentClass) {
return delegate.addComponent( propertyData, componentClass );
}
@Override
public void addComposite(PropertyData propertyData, PropertyMapper propertyMapper) {
delegate.addComposite( propertyData, propertyMapper );
}
@Override
public void add(PropertyData propertyData) {
delegate.add( propertyData );
}
public Map<PropertyData, PropertyMapper> getProperties() {
return delegate.getProperties();
}
}