com.sun.faces.scripting.GroovySupportFilter Maven / Gradle / Ivy

Show more of this group Show more artifacts with this name
Show all versions of jsf-impl Show documentation
This is the master POM file for Sun's Implementation of the JSF 1.2 Specification.
The newest version!
/*
 * 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
 * identifying information: "Portions Copyrighted [year]
 * [name of copyright owner]"
 *
 * Contributor(s):
 *
 * 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
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.faces.scripting;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.FilterChain;
import javax.servlet.ServletContext;

/**
 * Created by IntelliJ IDEA. User: rlubke Date: Apr 16, 2008 Time: 9:24:40 AM To
 * change this template use File | Settings | File Templates.
 */
public class GroovySupportFilter implements Filter {

    private boolean helperChecked;
    private GroovyHelper helper;
    private ServletContext sc;

    public void init(FilterConfig filterConfig) throws ServletException {
        sc = filterConfig.getServletContext();
    }

    public void doFilter(ServletRequest servletRequest,
                         ServletResponse servletResponse,
                         FilterChain filterChain)
          throws IOException, ServletException {

        if (!helperChecked) {
            helper = GroovyHelper.getCurrentInstance(sc);
            // if null at this point, it will be null for the remainder
            // of the app.  Set a flag so that we don't continually hit
            // the ServletContext looking up the helper.
            helperChecked = true;
        }
        if (helper != null) {
            helper.setClassLoader();
        }
        filterChain.doFilter(servletRequest, servletResponse);
        
    }

    public void destroy() {
        // no-op
    }
    
}