/*
* 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 java.io.Serializable;
import javax.persistence.criteria.Root;
import javax.persistence.metamodel.EntityType;
import org.hibernate.ejb.criteria.CriteriaBuilderImpl;
import org.hibernate.ejb.criteria.CriteriaQueryCompiler;
import org.hibernate.ejb.criteria.CriteriaSubqueryImpl;
import org.hibernate.ejb.criteria.FromImplementor;
/**
* TODO : javadoc
*
* @author Steve Ebersole
*/
public class RootImpl<X> extends AbstractFromImpl<X,X> implements Root<X>, Serializable {
private final EntityType<X> entityType;
public RootImpl(
CriteriaBuilderImpl criteriaBuilder,
EntityType<X> entityType) {
super( criteriaBuilder, entityType.getJavaType() );
this.entityType = entityType;
}
public EntityType<X> getEntityType() {
return entityType;
}
public EntityType<X> getModel() {
return getEntityType();
}
@Override
protected FromImplementor<X, X> createCorrelationDelegate() {
return new RootImpl<X>( criteriaBuilder(), getEntityType() );
}
@Override
public RootImpl<X> correlateTo(CriteriaSubqueryImpl subquery) {
return (RootImpl<X>) super.correlateTo( subquery );
}
@Override
protected boolean canBeJoinSource() {
return true;
}
public String renderTableExpression(CriteriaQueryCompiler.RenderingContext renderingContext) {
prepareAlias( renderingContext );
return getModel().getName() + " as " + getAlias();
}
@Override
public String getPathIdentifier() {
return getAlias();
}
@Override
public String render(CriteriaQueryCompiler.RenderingContext renderingContext) {
prepareAlias( renderingContext );
return getAlias();
}
@Override
public String renderProjection(CriteriaQueryCompiler.RenderingContext renderingContext) {
return render( renderingContext );
}
}