/*******************************************************************************
 * Copyright (c) 2007 Oracle Corporation.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Oracle - initial API and implementation
 *    
 ********************************************************************************/
package org.eclipse.jst.jsf.common.metadata.query;

import org.eclipse.jst.jsf.common.metadata.Entity;
import org.eclipse.jst.jsf.common.metadata.Trait;

/**
 * Trait querying interface
 * <p>NOT to implemented by clients directly.   Clients should subclass AbstractTraitQueryVisitor instead.
 * <p><b>Provisional API - subject to change</b></p>
 */
public interface ITraitQueryVisitor extends ITraitVisitor{
	/**
	 * @param entity
	 * @param traitKey
	 * @return IResultSet of Traits.  IResultSet must NOT be null.  Implementers may return {@link EmptyResultSet}.
	 */
	public IResultSet<Trait> findTraits(final Entity entity,
			final String traitKey);

}