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
15 package org.eclipse.jetty.annotations;
16
17
18 import java.util.HashSet;
19 import java.util.List;
20 import java.util.Set;
21
22 import org.eclipse.jetty.plus.annotation.ContainerInitializer;
23 import org.eclipse.jetty.util.MultiMap;
24 import org.eclipse.jetty.webapp.Configuration;
25 import org.eclipse.jetty.webapp.WebAppContext;
26
27 /**
28 * ContainerInitializerConfiguration
29 *
30 * Apply the ServletContainerInitializers.
31 */
32 public class ContainerInitializerConfiguration implements Configuration
33 {
34 public static final String CONTAINER_INITIALIZERS = "org.eclipse.jetty.containerInitializers";
35
36 public void preConfigure(WebAppContext context) throws Exception
37 {
38 }
39
40 public void configure(WebAppContext context) throws Exception
41 {
42 }
43
44 public void postConfigure(WebAppContext context) throws Exception
45 {
46 List<ContainerInitializer> initializers = (List<ContainerInitializer>)context.getAttribute(CONTAINER_INITIALIZERS);
47 MultiMap classMap = (MultiMap)context.getAttribute(AnnotationConfiguration.CLASS_INHERITANCE_MAP);
48
49 if (initializers != null)
50 {
51 for (ContainerInitializer i : initializers)
52 {
53 //We have already found the classes that directly have an annotation that was in the HandlesTypes
54 //annotation of the ServletContainerInitializer. For each of those classes, walk the inheritance
55 //hierarchy to find classes that extend or implement them.
56 if (i.getAnnotatedTypeNames() != null)
57 {
58 Set<String> annotatedClassNames = new HashSet<String>(i.getAnnotatedTypeNames());
59 for (String name : annotatedClassNames)
60 {
61 //add the class with the annotation
62 i.addApplicableTypeName(name);
63 //add the classes that inherit the annotation
64 List<String> implementsOrExtends = (List<String>)classMap.getValues(name);
65 if (implementsOrExtends != null && !implementsOrExtends.isEmpty())
66 addInheritedTypes(classMap, i, implementsOrExtends);
67 }
68 }
69
70
71 //Now we need to look at the HandlesTypes classes that were not annotations. We need to
72 //find all classes that extend or implement them.
73 if (i.getInterestedTypes() != null)
74 {
75 for (Class c : i.getInterestedTypes())
76 {
77 if (!c.isAnnotation())
78 {
79 //add the classes that implement or extend the class.
80 //TODO but not including the class itself?
81 List<String> implementsOrExtends = (List<String>)classMap.getValues(c.getName());
82 if (implementsOrExtends != null && !implementsOrExtends.isEmpty())
83 addInheritedTypes(classMap, i, implementsOrExtends);
84 }
85 }
86 }
87 //instantiate ServletContainerInitializers, call doStart
88 i.callStartup(context);
89 }
90
91 //TODO Email from Jan Luehe 18 August: after all ServletContainerInitializers have been
92 //called, need to check to see if there are any ServletRegistrations remaining
93 //that are "preliminary" and fail the deployment if so.
94 }
95 }
96
97 public void deconfigure(WebAppContext context) throws Exception
98 {
99 }
100
101
102 void addInheritedTypes (MultiMap classMap, ContainerInitializer initializer, List<String> applicableTypes)
103 {
104 for (String s : applicableTypes)
105 {
106 //add the name of the class that extends or implements
107 initializer.addApplicableTypeName(s);
108
109 //walk the hierarchy and find all types that extend or implement it
110 List<String> implementsOrExtends = (List<String>)classMap.getValues(s);
111 if (implementsOrExtends != null && !implementsOrExtends.isEmpty())
112 addInheritedTypes (classMap, initializer, implementsOrExtends);
113 }
114 }
115
116 }