PathTypeExpression.java :  » Database-ORM » hibernate » org » hibernate » ejb » criteria » expression » Java Open Source

/*
 * 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.expression;

import java.io.Serializable;

import org.hibernate.ejb.criteria.CriteriaBuilderImpl;
import org.hibernate.ejb.criteria.CriteriaQueryCompiler;
import org.hibernate.ejb.criteria.ParameterRegistry;

/**
 * Used to construct the result of {@link javax.persistence.criteria.Path#type()}
 *
 * @author Steve Ebersole
 */
public class PathTypeExpression<T> extends ExpressionImpl<T> implements Serializable {
  public PathTypeExpression(CriteriaBuilderImpl criteriaBuilder, Class<T> javaType) {
    super( criteriaBuilder, javaType );
  }

  public void registerParameters(ParameterRegistry registry) {
    // nothing to do
  }

  public String render(CriteriaQueryCompiler.RenderingContext renderingContext) {
    // todo : is it valid for this to get rendered into the query itself?
    throw new IllegalArgumentException( "Unexpected call on EntityTypeExpression#render" );
  }

  public String renderProjection(CriteriaQueryCompiler.RenderingContext renderingContext) {
    return render( renderingContext );
  }
}