/*
* $Id$
*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.struts2;
import com.opensymphony.xwork2.ActionContext;
import org.apache.struts2.views.util.UrlHelper;
import javax.servlet.Servlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.jsp.HttpJspPage;
import java.util.Map;
/**
* Maintains a cache of jsp locations -> servlet instances for those jsps. When a jsp is requested
* from the cache, the cache will block if the jsp was not compiled already, and wait for the compilation
*/
public abstract class JSPRuntime {
//maps from jsp path -> pagelet
protected static final ServletCache servletCache = new ServletCache();
public static void clearCache() {
servletCache.clear();
}
public static void handle(String location) throws Exception {
handle(location, false);
}
public static void handle(String location, boolean flush) throws Exception {
final HttpServletResponse response = ServletActionContext.getResponse();
final HttpServletRequest request = ServletActionContext.getRequest();
int i = location.indexOf("?");
if (i > 0) {
//extract params from the url and add them to the request
Map parameters = ActionContext.getContext().getParameters();
String query = location.substring(i + 1);
Map queryParams = UrlHelper.parseQueryString(query, true);
if (queryParams != null && !queryParams.isEmpty())
parameters.putAll(queryParams);
location = location.substring(0, i);
}
Servlet servlet = servletCache.get(location);
HttpJspPage page = (HttpJspPage) servlet;
page._jspService(request, response);
if (flush)
response.flushBuffer();
}
}