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9
10 package org.openlaszlo.servlets.responders;
11
12 import java.io.*;
13 import java.util.*;
14 import java.net.URLEncoder  ;
15 import java.util.Enumeration ;
16 import java.util.Properties ;
17 import javax.servlet.ServletConfig ;
18 import javax.servlet.ServletException ;
19 import javax.servlet.ServletOutputStream ;
20 import javax.servlet.http.HttpSession ;
21 import javax.servlet.http.HttpServletRequest ;
22 import javax.servlet.http.HttpServletResponse ;
23 import org.openlaszlo.compiler.Canvas;
24 import org.openlaszlo.compiler.CompilationError;
25 import org.openlaszlo.utils.*;
26 import org.apache.log4j.Logger;
27
28 public final class TemplateResponder extends ResponderCompile
29 {
30 private static Logger mLogger = Logger.getLogger(TemplateResponder.class);
31
32
33 private static Map mResponderMap = new HashMap();
34
35 public static Responder getResponder(String lzt) {
36 String pathname =
37 org.openlaszlo.server.LPS.getTemplateDirectory() +
38 File.separator + lzt + "-response.xslt";
39 synchronized (mResponderMap) {
40 Responder responder = (Responder) mResponderMap.get(pathname);
41 if (responder == null) {
42 if (new File(pathname).exists())
43 responder = new TemplateResponder(pathname);
44 mLogger.debug("getResponder(" + lzt + ") -> " + responder);
45 mResponderMap.put(pathname, responder);
46 }
47 return responder;
48 }
49 }
50
51 protected final String mTemplatePathname;
52
53 protected TemplateResponder(String templatePathname) {
54 this.mTemplatePathname = templatePathname;
55 }
56
57
60 protected void respondImpl(String fileName, HttpServletRequest req,
61 HttpServletResponse res)
62 throws IOException
63 {
64 mLogger.info("Responding with HTML wrapper for " + fileName);
65 res.setContentType("text/html");
66 ServletOutputStream out = res.getOutputStream();
67 try {
68 if (fileName.endsWith(".lzo")) {
72 fileName = fileName.substring(0, fileName.length() - 1) + "x";
73 }
74 Canvas canvas = getCanvas(fileName, req);
75 writeCanvas(out, req, canvas, fileName);
76 } catch (CompilationError e) {
77 ResponderAPP_CONSOLE.respondCompilationError(e, req, res);
78 } finally {
79 FileUtils.close(out);
80 }
81 }
82
83
92 private void writeCanvas (ServletOutputStream out, HttpServletRequest req,
93 Canvas canvas, String fileName)
94 throws IOException
95 {
96 String xmlString = canvas.getXML(ResponderAPP_CONSOLE.getRequestXML(req, fileName));
97 Properties properties = new Properties ();
98 TransformUtils.applyTransform(mTemplatePathname, properties,
99 xmlString, out);
100 }
101
102
105 private String getQueryArgs(HttpServletRequest req) {
106 StringBuffer query = new StringBuffer ();
107 Enumeration e = req.getParameterNames();
108 while (e.hasMoreElements()) {
109 String name = (String )e.nextElement();
110 String val = req.getParameter(name);
111 if (!name.equals("lzt")) {
112 query.append("&"+name+"="+URLEncoder.encode(val));
113 }
114 }
115 return query.toString();
116 }
117
118 public int getMimeType()
119 {
120 return MIME_TYPE_HTML;
121 }
122 }
123 |
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