1 /*
2 * Copyright 2007-2012 the original author or authors.
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 package org.springbyexample.bean.scope.thread;
18
19 import java.util.Map;
20
21 import org.springframework.beans.factory.ObjectFactory;
22 import org.springframework.beans.factory.config.Scope;
23
24 /**
25 * Thread scope implementation.
26 *
27 * @author David Winterfeldt
28 */
29 public class ThreadScope implements Scope {
30
31 /**
32 * Gets bean from scope.
33 */
34 public Object get(String name, ObjectFactory<?> factory) {
35 Object result = null;
36
37 Map<String, Object> hBeans = ThreadScopeContextHolder.currentThreadScopeAttributes().getBeanMap();
38
39 if (!hBeans.containsKey(name)) {
40 result = factory.getObject();
41
42 hBeans.put(name, result);
43 } else {
44 result = hBeans.get(name);
45 }
46
47
48 return result;
49 }
50
51 /**
52 * Removes bean from scope.
53 */
54 public Object remove(String name) {
55 Object result = null;
56
57 Map<String, Object> hBeans = ThreadScopeContextHolder.currentThreadScopeAttributes().getBeanMap();
58
59 if (hBeans.containsKey(name)) {
60 result = hBeans.get(name);
61
62 hBeans.remove(name);
63 }
64
65 return result;
66 }
67
68 public void registerDestructionCallback(String name, Runnable callback) {
69 ThreadScopeContextHolder.currentThreadScopeAttributes().registerRequestDestructionCallback(name, callback);
70 }
71
72 /**
73 * Resolve the contextual object for the given key, if any.
74 * Which in this case will always be <code>null</code>.
75 */
76 public Object resolveContextualObject(String key) {
77 return null;
78 }
79
80 /**
81 * Gets current thread name as the conversation id.
82 */
83 public String getConversationId() {
84 return Thread.currentThread().getName();
85 }
86
87 }