SetupHttpSCCFilter.java

/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2010, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */

package org.jboss.seam.conversation.support;

import java.io.IOException;

import javax.inject.Inject;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

import org.jboss.seam.conversation.spi.SeamConversationContext;

/**
 * @author <a href="mailto:ales.justin@jboss.org">Ales Justin</a>
 */
public class SetupHttpSCCFilter implements Filter {
    @SuppressWarnings({"UnusedDeclaration"})
    @Inject
    private SeamConversationContext<HttpServletRequest> scc;

    public void init(FilterConfig config) throws ServletException {
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
        try {
            String cid = request.getParameter("cid");
            scc.associate((HttpServletRequest) request).activate(cid);

            chain.doFilter(request, response);
        } finally {
            scc.invalidate().deactivate().dissociate((HttpServletRequest) request);
        }
    }

    public void destroy() {
    }
}