001
014
015 package com.liferay.portal.kernel.servlet;
016
017 import com.liferay.portal.kernel.util.StringPool;
018
019 import java.io.IOException;
020
021 import java.util.HashMap;
022 import java.util.Map;
023
024 import javax.servlet.ServletException;
025 import javax.servlet.http.HttpServlet;
026 import javax.servlet.http.HttpServletRequest;
027 import javax.servlet.http.HttpServletResponse;
028
029
037 public class PortalDelegatorServlet extends HttpServlet {
038
039 public static void addDelegate(String subContext, HttpServlet delegate) {
040 if (subContext == null) {
041 throw new IllegalArgumentException();
042 }
043
044 if (delegate == null) {
045 throw new IllegalArgumentException();
046 }
047
048 _delegates.put(subContext, delegate);
049 }
050
051 public static void removeDelegate(String subContext) {
052 if (subContext == null) {
053 throw new IllegalArgumentException();
054 }
055
056 _delegates.remove(subContext);
057 }
058
059 @Override
060 public void service(
061 HttpServletRequest request, HttpServletResponse response)
062 throws IOException, ServletException {
063
064 String uri = request.getPathInfo();
065
066 if ((uri == null) || (uri.length() == 0)) {
067 response.sendError(
068 HttpServletResponse.SC_NOT_FOUND,
069 "Path information is not specified");
070
071 return;
072 }
073
074 String[] paths = uri.split(StringPool.SLASH);
075
076 if (paths.length < 2) {
077 response.sendError(
078 HttpServletResponse.SC_NOT_FOUND,
079 "Path " + uri + " is invalid");
080
081 return;
082 }
083
084 HttpServlet delegate = _delegates.get(paths[1]);
085
086 if (delegate == null) {
087 response.sendError(
088 HttpServletResponse.SC_NOT_FOUND,
089 "No servlet registred for context " + paths[1]);
090
091 return;
092 }
093
094 Thread currentThread = Thread.currentThread();
095
096 ClassLoader contextClassLoader = currentThread.getContextClassLoader();
097
098 try {
099 ClassLoader delegateClassLoader =
100 delegate.getClass().getClassLoader();
101
102 currentThread.setContextClassLoader(delegateClassLoader);
103
104 delegate.service(request, response);
105 }
106 finally {
107 currentThread.setContextClassLoader(contextClassLoader);
108 }
109 }
110
111 private static Map<String, HttpServlet> _delegates =
112 new HashMap<String, HttpServlet>();
113
114 }