-
Notifications
You must be signed in to change notification settings - Fork 1.9k
/
InjectionCollection.java
144 lines (122 loc) · 4.64 KB
/
InjectionCollection.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
//
// ========================================================================
// Copyright (c) 1995-2021 Mort Bay Consulting Pty Ltd and others.
// ------------------------------------------------------------------------
// All rights reserved. This program and the accompanying materials
// are made available under the terms of the Eclipse Public License v1.0
// and Apache License v2.0 which accompanies this distribution.
//
// The Eclipse Public License is available at
// http://www.eclipse.org/legal/epl-v10.html
//
// The Apache License v2.0 is available at
// http://www.opensource.org/licenses/apache2.0.php
//
// You may elect to redistribute this code under either of these licenses.
// ========================================================================
//
package org.eclipse.jetty.plus.annotation;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.util.Iterator;
import java.util.Set;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.CopyOnWriteArraySet;
import org.eclipse.jetty.util.log.Log;
import org.eclipse.jetty.util.log.Logger;
/**
* InjectionCollection
* Map of classname to all injections requested on that class,
* whether by declaration in web.xml or via equivalent annotations.
*
* This class is not threadsafe for concurrent modifications, but is
* threadsafe for readers with concurrent modifications.
*/
public class InjectionCollection
{
private static final Logger LOG = Log.getLogger(InjectionCollection.class);
public static final String INJECTION_COLLECTION = "org.eclipse.jetty.injectionCollection";
private final ConcurrentMap<String, Set<Injection>> _injectionMap = new ConcurrentHashMap<>(); //map of classname to injections
public void add(Injection injection)
{
if (injection == null)
{
if (LOG.isDebugEnabled())
LOG.debug("Ignoring null Injection");
return;
}
String name = injection.getTargetClass().getName();
Set<Injection> injections = _injectionMap.get(name);
if (injections == null)
{
injections = new CopyOnWriteArraySet<>();
Set<Injection> tmp = _injectionMap.putIfAbsent(name, injections);
if (tmp != null)
injections = tmp;
}
boolean added = injections.add(injection);
if (LOG.isDebugEnabled())
LOG.debug("Adding injection for class={} on {} added={}", name, injection.getTarget().getName(), added);
}
public Set<Injection> getInjections(String className)
{
if (className == null)
return null;
return _injectionMap.get(className);
}
public Injection getInjection(String jndiName, Class<?> clazz, Field field)
{
if (field == null || clazz == null)
return null;
Set<Injection> injections = getInjections(clazz.getName());
if (injections == null)
return null;
Iterator<Injection> itor = injections.iterator();
Injection injection = null;
while (itor.hasNext() && injection == null)
{
Injection i = itor.next();
if (i.isField() && field.getName().equals(i.getTarget().getName()))
injection = i;
}
return injection;
}
public Injection getInjection(String jndiName, Class<?> clazz, Method method, Class<?> paramClass)
{
if (clazz == null || method == null || paramClass == null)
return null;
Set<Injection> injections = getInjections(clazz.getName());
if (injections == null)
return null;
Iterator<Injection> itor = injections.iterator();
Injection injection = null;
while (itor.hasNext() && injection == null)
{
Injection i = itor.next();
if (i.isMethod() && i.getTarget().getName().equals(method.getName()) && paramClass.equals(i.getParamClass()))
injection = i;
}
return injection;
}
public void inject(Object injectable)
{
if (injectable == null)
return;
//Get all injections pertinent to the Object by
//looking at it's class hierarchy
Class<?> clazz = injectable.getClass();
while (clazz != null)
{
Set<Injection> injections = _injectionMap.get(clazz.getName());
if (injections != null)
{
for (Injection i : injections)
{
i.inject(injectable);
}
}
clazz = clazz.getSuperclass();
}
}
}