// Copyright 2005-2007 onetsoft.com
//
// 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.
package com.onetsoft.fastjsp;

import com.onetsoft.fastjsp.util.Constants;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;


/**
 * @author <a href="mailto:hgw@onetsoft.com">hgw</a>
 */
public class FastJspServlet extends HttpServlet {
    private final static ThreadLocal t = new ThreadLocal();

    private Module module = null;

    public void init(ServletConfig config) throws ServletException {
        super.init(config);
        module = new Module(config);
        getServletContext().setAttribute(Constants.APPLICATION_MODULE_ATTRIBUTE_PREFIX + module.getName(), module);
    }

    public void destroy() {
        try {
            t.set(null);
            getServletContext().removeAttribute(Constants.APPLICATION_MODULE_ATTRIBUTE_PREFIX + module.getName());
        } finally {
            super.destroy();
        }
    }

    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {

        LinkPool p = (LinkPool) t.get();
        if (p == null) {
            p = new LinkPool();
            t.set(p);
        }

        try {
            AbstractServicer servicer = ((AbstractServicer) module.servicerFactory.getServicer(this, request, response));
            servicer.linkPool = p;
            servicer.doService();
        } finally {
            p.recycle();
        }
    }

    protected Module getModule() {
        return module;
    }
}