ejportal.webapp.filter.MockFilterChain.java Source code

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Here is the source code for ejportal.webapp.filter.MockFilterChain.java

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/**************************************************************************
 * ejPortal
 * ==============================================
 * Copyright (C) 2010-2012 by 
 *   - Christoph P. Neumann (http://www.chr15t0ph.de)
 *   - Florian Irmert
 *   - and the SWAT 2010 team
 **************************************************************************
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 *     http://www.apache.org/licenses/LICENSE-2.0
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and 
 * limitations under the License.
 **************************************************************************
 * $Id$
 *************************************************************************/
package ejportal.webapp.filter;

import java.io.IOException;

import javax.servlet.FilterChain;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

import org.apache.commons.lang.StringUtils;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 * Borrowed from the Display Tag project:
 * http://displaytag.sourceforge.net/xref-
 * test/org/displaytag/filter/MockFilterSupport.html
 * 
 * Todo: look into using Spring's MockFilterChain:
 * http://www.springframework.org
 * /docs/api/org/springframework/mock/web/MockFilterChain.html
 */
public class MockFilterChain implements FilterChain {

    /** The log. */
    private final Log log = LogFactory.getLog(MockFilterChain.class);

    /** The forward url. */
    private String forwardURL;

    /*
     * (non-Javadoc)
     * 
     * @see javax.servlet.FilterChain#doFilter(javax.servlet.ServletRequest,
     * javax.servlet.ServletResponse)
     */
    public void doFilter(final ServletRequest request, final ServletResponse response)
            throws IOException, ServletException {
        String uri = ((HttpServletRequest) request).getRequestURI();
        final String requestContext = ((HttpServletRequest) request).getContextPath();

        if (StringUtils.isNotEmpty(requestContext) && uri.startsWith(requestContext)) {
            uri = uri.substring(requestContext.length());
        }

        this.forwardURL = uri;
        this.log.debug("Forwarding to: " + uri);

        final RequestDispatcher dispatcher = request.getRequestDispatcher(uri);
        dispatcher.forward(request, response);
    }

    /**
     * Gets the forward url.
     * 
     * @return the forward url
     */
    public String getForwardURL() {
        return this.forwardURL;
    }
}