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org.apache.jcs.utils.servlet.JCSServletContextListener |
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1 | package org.apache.jcs.utils.servlet; |
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2 | ||
3 | /* |
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4 | * Licensed to the Apache Software Foundation (ASF) under one |
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5 | * or more contributor license agreements. See the NOTICE file |
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6 | * distributed with this work for additional information |
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7 | * regarding copyright ownership. The ASF licenses this file |
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8 | * to you under the Apache License, Version 2.0 (the |
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9 | * "License"); you may not use this file except in compliance |
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10 | * with the License. You may obtain a copy of the License at |
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11 | * |
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12 | * http://www.apache.org/licenses/LICENSE-2.0 |
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13 | * |
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14 | * Unless required by applicable law or agreed to in writing, |
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15 | * software distributed under the License is distributed on an |
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16 | * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
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17 | * KIND, either express or implied. See the License for the |
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18 | * specific language governing permissions and limitations |
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19 | * under the License. |
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20 | */ |
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21 | ||
22 | import javax.servlet.ServletContextEvent; |
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23 | import javax.servlet.ServletContextListener; |
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24 | ||
25 | import org.apache.commons.logging.Log; |
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26 | import org.apache.commons.logging.LogFactory; |
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27 | import org.apache.jcs.engine.control.CompositeCacheManager; |
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28 | ||
29 | /** |
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30 | * If you add this to the context listeners section of your web.xml file, this will shutdown JCS |
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31 | * gracefully. |
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32 | * <p> |
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33 | * Add the following to the top of your web.xml file. |
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34 | * |
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35 | * <pre> |
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36 | * <listener> |
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37 | * <listener-class> |
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38 | * org.apache.jcs.utils.servlet.JCSServletContextListener |
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39 | * </listener-class> |
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40 | * </listener> |
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41 | * </pre> |
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42 | * |
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43 | * @author Aaron Smuts |
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44 | */ |
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45 | 0 | public class JCSServletContextListener |
46 | implements ServletContextListener |
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47 | { |
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48 | 0 | private static final Log log = LogFactory.getLog( JCSServletContextListener.class ); |
49 | ||
50 | /** |
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51 | * This does nothing. We don't want to initialize the cache here. |
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52 | * <p> |
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53 | * (non-Javadoc) |
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54 | * @see javax.servlet.ServletContextListener#contextInitialized(javax.servlet.ServletContextEvent) |
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55 | */ |
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56 | public void contextInitialized( ServletContextEvent arg0 ) |
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57 | { |
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58 | 0 | if ( log.isInfoEnabled() ) |
59 | { |
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60 | 0 | log.info( "contextInitialized" ); |
61 | } |
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62 | 0 | } |
63 | ||
64 | /** |
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65 | * This gets the singleton instance of the CompositeCacheManager and calls shutdown. |
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66 | * <p> |
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67 | * (non-Javadoc) |
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68 | * @see javax.servlet.ServletContextListener#contextDestroyed(javax.servlet.ServletContextEvent) |
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69 | */ |
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70 | public void contextDestroyed( ServletContextEvent arg0 ) |
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71 | { |
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72 | 0 | if ( log.isInfoEnabled() ) |
73 | { |
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74 | 0 | log.info( "contextDestroyed, shutting down JCS." ); |
75 | } |
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76 | 0 | CompositeCacheManager.getInstance().shutDown(); |
77 | 0 | } |
78 | ||
79 | } |
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