/*
* Hibernate, Relational Persistence for Idiomatic Java
*
* Copyright (c) 2009 by Red Hat Inc and/or its affiliates or by
* third-party contributors as indicated by either @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;
import javax.persistence.criteria.Selection;
/**
* Contract for query components capable of eirther being a parameter or containing parameters.
*
* @author Steve Ebersole
*/
public interface ParameterContainer {
/**
* Register any parameters contained within this query component with the given registry.
*
* @param registry The parameter registry with which to register.
*/
public void registerParameters(ParameterRegistry registry);
/**
* Helper to deal with potential parameter container nodes.
*/
public static class Helper {
public static void possibleParameter(Selection selection, ParameterRegistry registry) {
if ( ParameterContainer.class.isInstance( selection ) ) {
( (ParameterContainer) selection ).registerParameters( registry );
}
}
}
}