Mercurial > dive4elements > gnv-client
comparison 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> |
|---|---|
| date | Mon, 28 Sep 2009 14:17:15 +0000 |
| parents | |
| children | 7fb9441dd8af |
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| 98:156db25ad4b4 | 99:bb45c5097cb6 |
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| 1 /** | |
| 2 * | |
| 3 */ | |
| 4 package de.intevation.gnv.artifacts.cache; | |
| 5 | |
| 6 import net.sf.ehcache.Cache; | |
| 7 import net.sf.ehcache.CacheManager; | |
| 8 | |
| 9 import org.apache.log4j.Logger; | |
| 10 | |
| 11 /** | |
| 12 * @author Tim Englich <tim.englich@intevation.de> | |
| 13 * | |
| 14 */ | |
| 15 public class CacheFactory { | |
| 16 | |
| 17 /** | |
| 18 * the logger, used to log exceptions and additonaly information | |
| 19 */ | |
| 20 private static Logger log = Logger.getLogger(CacheFactory.class); | |
| 21 | |
| 22 private final static String CACHENAME = "artifactdata"; | |
| 23 | |
| 24 | |
| 25 /** | |
| 26 * The singleton Instance of this Factory. | |
| 27 */ | |
| 28 private static CacheFactory instance = null; | |
| 29 | |
| 30 /** | |
| 31 * | |
| 32 */ | |
| 33 private CacheManager cacheManager = null; | |
| 34 | |
| 35 /** | |
| 36 * Basic-Constructor of this Class | |
| 37 */ | |
| 38 private CacheFactory() { | |
| 39 super(); | |
| 40 } | |
| 41 | |
| 42 /** | |
| 43 * This Method provides an singleton Instance of this Class. | |
| 44 * @return an singleton Instance of this Class | |
| 45 */ | |
| 46 public static CacheFactory getInstance(){ | |
| 47 if (instance == null){ | |
| 48 instance = new CacheFactory(); | |
| 49 } | |
| 50 return instance; | |
| 51 } | |
| 52 | |
| 53 | |
| 54 /** | |
| 55 * Getting the ConnectionPool | |
| 56 * @return the ConnectionPool | |
| 57 */ | |
| 58 public Cache getCache(){ | |
| 59 return this.cacheManager.getCache(CACHENAME); | |
| 60 } | |
| 61 | |
| 62 /** | |
| 63 * Initializes the ConnectionPool. | |
| 64 * Should only be called once on system startup | |
| 65 * @param properties the Properties for the Individual Configuration of the ConnectionPool | |
| 66 */ | |
| 67 public void initializeCache(String configurationFileName){ | |
| 68 if (cacheManager == null){ | |
| 69 cacheManager = new CacheManager(configurationFileName); | |
| 70 cacheManager.addCache(CACHENAME); | |
| 71 } | |
| 72 } | |
| 73 | |
| 74 /** | |
| 75 * Checks if the ConnectionPool has already been initialized. | |
| 76 * @return true if the ConnectionPool is initialized. | |
| 77 */ | |
| 78 public boolean isInitialized(){ | |
| 79 return this.cacheManager != null; | |
| 80 } | |
| 81 | |
| 82 } |