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This is the master POM file for Oracle's Implementation of the JSF 2.2 Specification.
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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2013 Oracle and/or its affiliates. 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_1_1.html
 * or packager/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 packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * If you wish your version of this file to be governed by only the CDDL or
 * 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
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
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 */
package com.sun.faces.application.annotation;

import java.lang.annotation.Annotation;

/**
 * Scanner implementation responsible for {@link WebServiceRef}
 * annotations.
 *
 *  Note this will delegate down to the WebServiceRefScanner so we can fail
 * gracefully when JavaEE is not available. 
 */
class DelegatedWebServiceRefScanner implements Scanner {

    private Scanner delegate;

    public DelegatedWebServiceRefScanner() {
        try {
            delegate = new WebServiceRefScanner();
        } catch (Throwable throwable) {
            throwable.printStackTrace(System.err);
        }
    }

    /**
     * Delegate to the actual WebServiceRef scanner.
     *
     * @return the annotation.
     */
    @Override
    public Class getAnnotation() {
        if (delegate != null) {
            return delegate.getAnnotation();
        }
        return null;
    }

    /**
     * Delegate to the actual EBJ scanner.
     *
     * @param clazz the class.
     * @return the runtime annotation handler.
     */
    @Override
    public RuntimeAnnotationHandler scan(Class clazz) {
        if (delegate != null) {
            return delegate.scan(clazz);
        }
        return null;
    }
}