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package org.seasar.cubby.internal.controller; |
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import java.util.Map; |
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import java.util.ResourceBundle; |
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import javax.servlet.http.HttpServletRequest; |
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import javax.servlet.http.HttpServletResponse; |
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import org.seasar.cubby.controller.MessagesBehaviour; |
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import org.seasar.cubby.spi.ContainerProvider; |
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import org.seasar.cubby.spi.ProviderFactory; |
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import org.seasar.cubby.spi.container.Container; |
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public class ThreadContext { |
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37 | 1 | private static final ThreadLocal<ThreadContext> THREAD_LOCAL = new ThreadLocal<ThreadContext>(); |
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private final HttpServletRequest request; |
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private final HttpServletResponse response; |
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46 | 21 | private ResourceBundle messagesResourceBundle = null; |
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49 | 21 | private Map<String, Object> messages = null; |
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private MessagesBehaviour messagesBehaviour; |
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private ThreadContext(final HttpServletRequest request, |
63 | 21 | final HttpServletResponse response) { |
64 | 21 | this.request = request; |
65 | 21 | this.response = response; |
66 | 21 | } |
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private static ThreadContext getContext() { |
74 | 119 | final ThreadContext context = THREAD_LOCAL.get(); |
75 | 119 | if (context == null) { |
76 | 9 | throw new IllegalStateException( |
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"Could not get context from ThreadLocal. run in context scope."); |
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} |
79 | 110 | return context; |
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} |
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public static HttpServletRequest getRequest() { |
88 | 21 | return getContext().request; |
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} |
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public static HttpServletResponse getResponse() { |
97 | 9 | return getContext().response; |
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} |
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public static ResourceBundle getMessagesResourceBundle() { |
106 | 85 | final ThreadContext context = getContext(); |
107 | 85 | if (context.messagesResourceBundle == null) { |
108 | 8 | final MessagesBehaviour messagesBehaviour = getMessagesBehaviour(context); |
109 | 8 | context.messagesResourceBundle = messagesBehaviour |
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.getBundle(context.request.getLocale()); |
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} |
112 | 85 | return context.messagesResourceBundle; |
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} |
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public static Map<String, Object> getMessagesMap() { |
122 | 4 | final ThreadContext context = getContext(); |
123 | 4 | if (context.messages == null) { |
124 | 3 | final ResourceBundle bundle = getMessagesResourceBundle(); |
125 | 3 | final MessagesBehaviour messagesBehaviour = getMessagesBehaviour(context); |
126 | 3 | context.messages = messagesBehaviour.toMap(bundle); |
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} |
128 | 4 | return context.messages; |
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} |
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private static MessagesBehaviour getMessagesBehaviour( |
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final ThreadContext context) { |
140 | 11 | if (context.messagesBehaviour == null) { |
141 | 8 | final Container container = ProviderFactory.get( |
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ContainerProvider.class).getContainer(); |
143 | 8 | context.messagesBehaviour = container |
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.lookup(MessagesBehaviour.class); |
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} |
146 | 11 | return context.messagesBehaviour; |
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} |
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public static void runInContext(final HttpServletRequest request, |
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final HttpServletResponse response, final Command command) |
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throws Exception { |
164 | 21 | if (request == null) { |
165 | 0 | throw new NullPointerException("request"); |
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} |
167 | 21 | if (response == null) { |
168 | 0 | throw new NullPointerException("response"); |
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} |
170 | 21 | if (command == null) { |
171 | 0 | throw new NullPointerException("command"); |
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} |
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174 | 21 | final ThreadContext previous = THREAD_LOCAL.get(); |
175 | 21 | final ThreadContext context = new ThreadContext(request, response); |
176 | 21 | THREAD_LOCAL.set(context); |
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try { |
178 | 21 | command.execute(request, response); |
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} finally { |
180 | 21 | if (previous == null) { |
181 | 19 | THREAD_LOCAL.remove(); |
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} else { |
183 | 2 | THREAD_LOCAL.set(previous); |
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} |
185 | 1 | } |
186 | 19 | } |
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public interface Command { |
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void execute(HttpServletRequest request, HttpServletResponse response) |
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throws Exception; |
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} |
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} |