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1 package com.icesoft.faces.webapp.http.servlet;
2
3 import org.apache.commons.logging.Log;
4 import org.apache.commons.logging.LogFactory;
5
6 import javax.servlet.http.HttpServletRequest  ;
7 import javax.servlet.http.HttpServletResponse ;
8 import java.util.ArrayList ;
9 import java.util.Iterator ;
10 import java.util.List ;
11 import java.util.regex.Pattern ;
12
13 public class PathDispatcher implements PseudoServlet {
14
15 private static Log log = LogFactory.getLog(PathDispatcher.class);
16
17 private List matchers = new ArrayList ();
18
19 public void service(HttpServletRequest request, HttpServletResponse response) throws Exception {
20 String path = request.getRequestURI();
21
22 if( log.isDebugEnabled() ){
23 log.debug( "path: " + path );
24 }
25
26 Iterator i = matchers.iterator();
27 boolean matched = false;
28 while (!matched && i.hasNext()) {
29 matched = ((Matcher) i.next()).serviceOnMatch(path, request, response);
30 }
31
32 if (!matched) {
33 response.sendError(404, "Resource at '" + path + "' not found.");
34 }
35 }
36
37 public void dispatchOn(String pathExpression, PseudoServlet toServer) {
38 matchers.add(new Matcher(pathExpression, toServer));
39 }
40
41 private class Matcher {
42 private Pattern pattern;
43 private PseudoServlet server;
44
45 public Matcher(String expression, PseudoServlet server) {
46 this.pattern = Pattern.compile(expression);
47 this.server = server;
48 }
49
50 boolean serviceOnMatch(String path, HttpServletRequest request, HttpServletResponse response) throws Exception {
51 if (pattern.matcher(path).find()) {
52 server.service(request, response);
53 return true;
54 } else {
55 return false;
56 }
57 }
58
59 void shutdown() {
60 server.shutdown();
61 }
62 }
63
64 public void shutdown() {
65 Iterator i = matchers.iterator();
66 while (i.hasNext()) {
67 Matcher matcher = (Matcher) i.next();
68 matcher.shutdown();
69 }
70 }
71 }
72 |
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