Mercurial > dive4elements > gnv-client

annotate gnv-artifacts/src/main/java/de/intevation/gnv/artifacts/cache/CacheFactory.java @ 99:bb45c5097cb6

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ehcache Integration for storing the chartresultvalues gnv-artifacts/trunk@146 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Tim Englich <tim.englich@intevation.de>
date Mon, 28 Sep 2009 14:17:15 +0000
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children 7fb9441dd8af
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bb45c5097cb6 ehcache Integration for storing the chartresultvalues
Tim Englich <tim.englich@intevation.de>
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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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Tim Englich <tim.englich@intevation.de>
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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 }
http://dive4elements.wald.intevation.org