/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2010, 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.ejb.criteria.path;
import javax.persistence.criteria.JoinType;
import javax.persistence.metamodel.Attribute;
import javax.persistence.metamodel.Bindable;
import javax.persistence.metamodel.SingularAttribute;
import org.hibernate.ejb.criteria.CriteriaBuilderImpl;
import org.hibernate.ejb.criteria.CriteriaSubqueryImpl;
import org.hibernate.ejb.criteria.FromImplementor;
import org.hibernate.ejb.criteria.PathSource;
/**
* TODO : javadoc
*
* @author Steve Ebersole
*/
public class SingularAttributeJoin<Z,X> extends AbstractJoinImpl<Z,X> {
private final Bindable<X> model;
@SuppressWarnings({ "unchecked" })
public SingularAttributeJoin(
CriteriaBuilderImpl criteriaBuilder,
Class<X> javaType,
PathSource<Z> pathSource,
SingularAttribute<? super Z, ?> joinAttribute,
JoinType joinType) {
super( criteriaBuilder, javaType, pathSource, joinAttribute, joinType );
this.model = (Bindable<X>) (
Attribute.PersistentAttributeType.EMBEDDED == joinAttribute.getPersistentAttributeType()
? joinAttribute
: criteriaBuilder.getEntityManagerFactory().getMetamodel().managedType( javaType )
);
}
@Override
public SingularAttribute<? super Z, ?> getAttribute() {
return (SingularAttribute<? super Z, ?>) super.getAttribute();
}
@Override
public SingularAttributeJoin<Z, X> correlateTo(CriteriaSubqueryImpl subquery) {
return (SingularAttributeJoin<Z, X>) super.correlateTo( subquery );
}
@Override
protected FromImplementor<Z, X> createCorrelationDelegate() {
return new SingularAttributeJoin<Z,X>(
criteriaBuilder(),
getJavaType(),
getPathSource(),
getAttribute(),
getJoinType()
);
}
@Override
protected boolean canBeJoinSource() {
return true;
}
public Bindable<X> getModel() {
return model;
}
}