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annotate flys-artifacts/src/main/java/de/intevation/flys/artifacts/cache/CacheFactory.java @ 406:663aa18bee7f

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Back jump correction should work now for both flow directions. flys-artifacts/trunk@1848 c6561f87-3c4e-4783-a992-168aeb5c3f6f
author Sascha L. Teichmann <sascha.teichmann@intevation.de>
date Sat, 07 May 2011 21:34:02 +0000
parents e07d1c3f7667
children 0c8aca463bd4
rev   line source
373
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1 package de.intevation.flys.artifacts.cache;
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2
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3 import de.intevation.artifacts.common.utils.Config;
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4
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5 import net.sf.ehcache.Cache;
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6 import net.sf.ehcache.CacheException;
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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 public final class CacheFactory
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12 {
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13 private static Logger log = Logger.getLogger(CacheFactory.class);
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14
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15 public static final String XPATH_CACHE_CONFIG_FILE =
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16 "/artifact-database/cache/config-file/text()";
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17
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18 private CacheFactory() {
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19 }
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20
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21 private static boolean initialized;
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22
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23 private static CacheManager cacheManager;
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24
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25 public static final Cache getCache() {
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26 return getCache(Cache.DEFAULT_CACHE_NAME);
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27 }
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28
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29 public static final synchronized Cache getCache(String cacheName) {
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30 if (!initialized) {
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31 initialized = true; // try only once
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32 String configFile = Config.getStringXPath(XPATH_CACHE_CONFIG_FILE);
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33 if (configFile != null) {
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34 configFile = Config.replaceConfigDir(configFile);
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35 try {
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36 cacheManager = CacheManager.create(configFile);
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37 //System.setProperty(
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38 // "net.sf.ehcache.enableShutdownHook", "true");
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39 Runtime.getRuntime().addShutdownHook(new Thread() {
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40 public void run() {
382
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41 log.info("shutting down caches");
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42 for (String name: cacheManager.getCacheNames()) {
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43 log.info("\tflushing '" + name + "'");
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44 cacheManager.getCache(name).flush();
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45 }
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46 cacheManager.shutdown();
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47 }
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48 });
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49 }
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50 catch (CacheException ce) {
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51 log.error("cannot configure cache", ce);
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52 }
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53 }
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54 }
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55
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56 return cacheManager != null
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57 ? cacheManager.getCache(cacheName)
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58 : null;
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59 }
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60 }
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61 // vim:set ts=4 sw=4 si et sta sts=4 fenc=utf8 :
http://dive4elements.wald.intevation.org