Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
ThreadContext |
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| 2.142857142857143;2.143 |
1 | /* | |
2 | * Copyright 2004-2010 the Seasar Foundation and the Others. | |
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, | |
13 | * either express or implied. See the License for the specific language | |
14 | * governing permissions and limitations under the License. | |
15 | */ | |
16 | ||
17 | package org.seasar.cubby.internal.controller; | |
18 | ||
19 | import javax.servlet.http.HttpServletRequest; | |
20 | import javax.servlet.http.HttpServletResponse; | |
21 | ||
22 | /** | |
23 | * 実行スレッドのコンテキスト情報です。 | |
24 | * | |
25 | * @author baba | |
26 | */ | |
27 | public class ThreadContext { | |
28 | ||
29 | /** ThreadContext を保存するスレッドローカル。 */ | |
30 | 1 | private static final ThreadLocal<ThreadContext> THREAD_LOCAL = new ThreadLocal<ThreadContext>(); |
31 | ||
32 | 1 | private static final ThreadLocal<ThreadContext> PREVIOUS = new ThreadLocal<ThreadContext>(); |
33 | ||
34 | /** 要求。 */ | |
35 | private final HttpServletRequest request; | |
36 | ||
37 | /** 応答 */ | |
38 | private final HttpServletResponse response; | |
39 | ||
40 | /** | |
41 | * インスタンス化します。 | |
42 | * | |
43 | * @param request | |
44 | * 要求 | |
45 | * @param response | |
46 | * 応答 | |
47 | */ | |
48 | private ThreadContext(final HttpServletRequest request, | |
49 | 18 | final HttpServletResponse response) { |
50 | 18 | this.request = request; |
51 | 18 | this.response = response; |
52 | 18 | } |
53 | ||
54 | /** | |
55 | * スレッドローカル変数からコンテキストを取得します。 | |
56 | * | |
57 | * @return コンテキスト | |
58 | */ | |
59 | public static ThreadContext getCurrentContext() { | |
60 | 110 | final ThreadContext context = THREAD_LOCAL.get(); |
61 | 110 | if (context == null) { |
62 | 8 | throw new IllegalStateException( |
63 | "Could not get context from ThreadLocal. run in context scope."); | |
64 | } | |
65 | 102 | return context; |
66 | } | |
67 | ||
68 | /** | |
69 | * 現在の実行スレッドに関連付けられた要求を取得します。 | |
70 | * | |
71 | * @return 要求 | |
72 | */ | |
73 | public HttpServletRequest getRequest() { | |
74 | 95 | return request; |
75 | } | |
76 | ||
77 | /** | |
78 | * 現在の実行スレッドに関連付けられた応答を取得します。 | |
79 | * | |
80 | * @return 応答 | |
81 | */ | |
82 | public HttpServletResponse getResponse() { | |
83 | 8 | return response; |
84 | } | |
85 | ||
86 | /** | |
87 | * コンテキストに入ります。 | |
88 | * | |
89 | * @param request | |
90 | * 要求 | |
91 | * @param response | |
92 | * 応答 | |
93 | */ | |
94 | public static void enter(final HttpServletRequest request, | |
95 | final HttpServletResponse response) { | |
96 | 18 | if (request == null) { |
97 | 0 | throw new NullPointerException("request"); |
98 | } | |
99 | 18 | if (response == null) { |
100 | 0 | throw new NullPointerException("response"); |
101 | } | |
102 | ||
103 | 18 | final ThreadContext previous = THREAD_LOCAL.get(); |
104 | 18 | if (previous != null) { |
105 | 4 | PREVIOUS.set(previous); |
106 | } | |
107 | 18 | final ThreadContext context = new ThreadContext(request, response); |
108 | 18 | THREAD_LOCAL.set(context); |
109 | 18 | } |
110 | ||
111 | /** | |
112 | * コンテキストを抜けます。 | |
113 | */ | |
114 | public static void exit() { | |
115 | 18 | final ThreadContext previous = PREVIOUS.get(); |
116 | 18 | if (previous != null) { |
117 | 8 | THREAD_LOCAL.set(previous); |
118 | } | |
119 | 18 | } |
120 | ||
121 | /** | |
122 | * コンテキストを削除します。 | |
123 | */ | |
124 | public static void remove() { | |
125 | 14 | THREAD_LOCAL.remove(); |
126 | 14 | } |
127 | ||
128 | } |