1 // ========================================================================
2 // Copyright (c) 2006-2009 Mort Bay Consulting Pty. Ltd.
3 // ------------------------------------------------------------------------
4 // All rights reserved. This program and the accompanying materials
5 // are made available under the terms of the Eclipse Public License v1.0
6 // and Apache License v2.0 which accompanies this distribution.
7 // The Eclipse Public License is available at
8 // http://www.eclipse.org/legal/epl-v10.html
9 // The Apache License v2.0 is available at
10 // http://www.opensource.org/licenses/apache2.0.php
11 // You may elect to redistribute this code under either of these licenses.
12 // ========================================================================
13
14 package org.eclipse.jetty.annotations;
15
16 import javax.servlet.MultipartConfigElement;
17 import javax.servlet.Servlet;
18 import javax.servlet.annotation.MultipartConfig;
19
20 import org.eclipse.jetty.annotations.AnnotationIntrospector.AbstractIntrospectableAnnotationHandler;
21 import org.eclipse.jetty.servlet.ServletHolder;
22 import org.eclipse.jetty.webapp.Descriptor;
23 import org.eclipse.jetty.webapp.MetaData;
24 import org.eclipse.jetty.webapp.WebAppContext;
25
26 /**
27 * MultiPartConfigAnnotationHandler
28 *
29 *
30 */
31 public class MultiPartConfigAnnotationHandler extends AbstractIntrospectableAnnotationHandler
32 {
33 protected WebAppContext _context;
34
35 public MultiPartConfigAnnotationHandler(WebAppContext context)
36 {
37 //TODO verify that MultipartConfig is not inheritable
38 super(false);
39 _context = context;
40 }
41 /**
42 * @see org.eclipse.jetty.annotations.AnnotationIntrospector.AbstractIntrospectableAnnotationHandler#doHandle(java.lang.Class)
43 */
44 public void doHandle(Class clazz)
45 {
46 if (!Servlet.class.isAssignableFrom(clazz))
47 return;
48
49 MultipartConfig multi = (MultipartConfig) clazz.getAnnotation(MultipartConfig.class);
50 if (multi == null)
51 return;
52
53 MetaData metaData = _context.getMetaData();
54
55 //TODO: The MultipartConfigElement needs to be set on the ServletHolder's Registration.
56 //How to identify the correct Servlet? If the Servlet has no WebServlet annotation on it, does it mean that this MultipartConfig
57 //annotation applies to all declared instances in web.xml/programmatically?
58 //Assuming TRUE for now.
59
60 ServletHolder holder = getServletHolderForClass(clazz);
61 if (holder != null)
62 {
63 Descriptor d = metaData.getOriginDescriptor(holder.getName()+".servlet.multipart-config");
64 //if a descriptor has already set the value for multipart config, do not
65 //let the annotation override it
66 if (d == null)
67 {
68 metaData.setOrigin(holder.getName()+".servlet.multipart-config");
69 holder.getRegistration().setMultipartConfig(new MultipartConfigElement(multi));
70 }
71 }
72 }
73
74 private ServletHolder getServletHolderForClass (Class clazz)
75 {
76 ServletHolder holder = null;
77 ServletHolder[] holders = _context.getServletHandler().getServlets();
78 if (holders != null)
79 {
80 for (ServletHolder h : holders)
81 {
82 if (h.getClassName().equals(clazz.getName()))
83 {
84 holder = h;
85 }
86 }
87 }
88 return holder;
89 }
90 }