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This is the master POM file for Sun's Implementation of the JSF 1.2 Specification.
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/*
 * $Id: FacesCompositeELResolver.java,v 1.8.4.4 2010/04/15 16:16:17 edburns Exp $
 */
/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2010 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License. You can obtain
 * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
 * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 * 
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
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 * Header, with the fields enclosed by brackets [] replaced by your own
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 * Version 2] license."  If you don't indicate a single choice of license, a
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package com.sun.faces.el;

import javax.el.CompositeELResolver;
import javax.el.ELResolver;

/**
 * Maintains an ordered composite list of child ELResolver for JSF.
 *
 */
public abstract class FacesCompositeELResolver extends CompositeELResolver
{
  /**
   * JSP indicates this CompositeELResolver instance is the
   * JSP chain, specified in section 5.6.1 of the spec.
   *
   * Faces indicates this CompositeELResolver instance is the
   * JSF chain, specified in section 5.6.2 of the spec.
   */

  public enum ELResolverChainType {
      JSP,
      Faces
  }

  public abstract ELResolverChainType getChainType();

  public abstract void addRootELResolver(ELResolver elResolver);

  public abstract void addPropertyELResolver(ELResolver elResolver);
}