Mercurial > dive4elements > river
diff flys-artifacts/src/main/java/de/intevation/flys/artifacts/cache/CacheFactory.java @ 373:7f7d6037d242
Added ehcache support.
flys-artifacts/trunk@1782 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author | Sascha L. Teichmann <sascha.teichmann@intevation.de> |
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date | Fri, 29 Apr 2011 16:56:37 +0000 |
parents | |
children | e07d1c3f7667 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/flys-artifacts/src/main/java/de/intevation/flys/artifacts/cache/CacheFactory.java Fri Apr 29 16:56:37 2011 +0000 @@ -0,0 +1,56 @@ +package de.intevation.flys.artifacts.cache; + +import de.intevation.artifacts.common.utils.Config; + +import net.sf.ehcache.Cache; +import net.sf.ehcache.CacheException; +import net.sf.ehcache.CacheManager; + +import org.apache.log4j.Logger; + +public final class CacheFactory +{ + private static Logger log = Logger.getLogger(CacheFactory.class); + + public static final String XPATH_CACHE_CONFIG_FILE = + "/artifact-database/cache/config-file/text()"; + + private CacheFactory() { + } + + private static boolean initialized; + + private static CacheManager cacheManager; + + public static final Cache getCache() { + return getCache(Cache.DEFAULT_CACHE_NAME); + } + + public static final synchronized Cache getCache(String cacheName) { + if (!initialized) { + initialized = true; // try only once + String configFile = Config.getStringXPath(XPATH_CACHE_CONFIG_FILE); + if (configFile != null) { + configFile = Config.replaceConfigDir(configFile); + try { + cacheManager = CacheManager.create(configFile); + //System.setProperty( + // "net.sf.ehcache.enableShutdownHook", "true"); + Runtime.getRuntime().addShutdownHook(new Thread() { + public void run() { + cacheManager.shutdown(); + } + }); + } + catch (CacheException ce) { + log.error("cannot configure cache", ce); + } + } + } + + return cacheManager != null + ? cacheManager.getCache(cacheName) + : null; + } +} +// vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :