Mercurial > dive4elements > gnv-client
annotate gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/cache/CacheFactory.java @ 99:bb45c5097cb6
ehcache Integration for storing the chartresultvalues
gnv-artifacts/trunk@146 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Tim Englich <tim.englich@intevation.de> |
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date | Mon, 28 Sep 2009 14:17:15 +0000 |
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children | 7fb9441dd8af |
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1 /** |
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2 * |
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3 */ |
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4 package de.intevation.gnv.artifacts.cache; |
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5 |
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6 import net.sf.ehcache.Cache; |
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7 import net.sf.ehcache.CacheManager; |
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8 |
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9 import org.apache.log4j.Logger; |
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10 |
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11 /** |
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12 * @author Tim Englich <tim.englich@intevation.de> |
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13 * |
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14 */ |
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15 public class CacheFactory { |
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16 |
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17 /** |
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18 * the logger, used to log exceptions and additonaly information |
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19 */ |
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20 private static Logger log = Logger.getLogger(CacheFactory.class); |
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21 |
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22 private final static String CACHENAME = "artifactdata"; |
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23 |
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24 |
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25 /** |
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26 * The singleton Instance of this Factory. |
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27 */ |
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28 private static CacheFactory instance = null; |
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29 |
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30 /** |
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31 * |
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32 */ |
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33 private CacheManager cacheManager = null; |
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34 |
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35 /** |
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36 * Basic-Constructor of this Class |
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37 */ |
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38 private CacheFactory() { |
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39 super(); |
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40 } |
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41 |
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42 /** |
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43 * This Method provides an singleton Instance of this Class. |
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44 * @return an singleton Instance of this Class |
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45 */ |
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46 public static CacheFactory getInstance(){ |
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47 if (instance == null){ |
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48 instance = new CacheFactory(); |
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49 } |
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50 return instance; |
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51 } |
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52 |
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53 |
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54 /** |
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55 * Getting the ConnectionPool |
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56 * @return the ConnectionPool |
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57 */ |
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58 public Cache getCache(){ |
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59 return this.cacheManager.getCache(CACHENAME); |
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60 } |
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61 |
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62 /** |
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63 * Initializes the ConnectionPool. |
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64 * Should only be called once on system startup |
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65 * @param properties the Properties for the Individual Configuration of the ConnectionPool |
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66 */ |
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67 public void initializeCache(String configurationFileName){ |
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68 if (cacheManager == null){ |
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69 cacheManager = new CacheManager(configurationFileName); |
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70 cacheManager.addCache(CACHENAME); |
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71 } |
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72 } |
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73 |
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74 /** |
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75 * Checks if the ConnectionPool has already been initialized. |
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76 * @return true if the ConnectionPool is initialized. |
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77 */ |
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78 public boolean isInitialized(){ |
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79 return this.cacheManager != null; |
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80 } |
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81 |
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82 } |