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This is the master POM file for Sun's Implementation of the JSF 1.2 Specification.
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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 1997-2007 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
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
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package com.sun.faces.scripting;

import java.beans.FeatureDescriptor;
import java.util.Iterator;

import javax.el.ELContext;
import javax.el.ELResolver;
import javax.faces.FacesException;

/**
 * Proxy instance for a groovy-based ELResolvers.  This allows the ELResolver
 * to remain registered in the application while picking up changes at runtime
 * from the associated groovy script.
 */
public class ELResolverProxy extends ELResolver {

    private String scriptName;



    // ------------------------------------------------------------ Constructors


    public ELResolverProxy(String scriptName) {
        this.scriptName = scriptName;
    }

    // ------------------------------------------------- Methods from ELResolver


    public Object getValue(ELContext elContext, Object o, Object o1) {
        return getGroovyDelegate().getValue(elContext, o, o1);
    }

    public Class getType(ELContext elContext, Object o, Object o1) {
        return getGroovyDelegate().getType(elContext, o, o1);
    }

    public void setValue(ELContext elContext, Object o, Object o1, Object o2) {
        getGroovyDelegate().setValue(elContext, o, o1, o2);
    }

    public boolean isReadOnly(ELContext elContext, Object o, Object o1) {
        return getGroovyDelegate().isReadOnly(elContext, o, o1);
    }

    public Iterator getFeatureDescriptors(ELContext elContext,
                                                             Object o) {
        return getGroovyDelegate().getFeatureDescriptors(elContext, o);
    }

    public Class getCommonPropertyType(ELContext elContext, Object o) {
        return getGroovyDelegate().getCommonPropertyType(elContext, o);
    }


    // --------------------------------------------------------- Private Methods


   private ELResolver getGroovyDelegate() {

       try {
            return ((ELResolver) GroovyHelper.newInstance(scriptName));
       } catch (Exception e) {
           throw new FacesException(e);
       }

    }
}