eu.etaxonomy.taxeditor.cdmlib/src/main/java/eu/etaxonomy/taxeditor/remoting/cache/CdmRemoteCacheManager.java

   1 package eu.etaxonomy.taxeditor.remoting.cache;
   2
   3 import java.io.IOException;
   4 import java.net.URISyntaxException;
   5
   6 import net.sf.ehcache.Cache;
   7 import net.sf.ehcache.CacheException;
   8 import net.sf.ehcache.CacheManager;
   9 import net.sf.ehcache.config.CacheConfiguration;
  10 import net.sf.ehcache.config.SizeOfPolicyConfiguration;
  11
  12 import org.apache.log4j.Logger;
  13
  14
  15 public class CdmRemoteCacheManager {
  16
  17     private static final Logger logger = Logger.getLogger(CdmRemoteCacheManager.class);
  18
  19
  20     private Cache cdmlibModelCache;
  21
  22     private static CdmRemoteCacheManager cdmRemoteCacheManager = null;
  23
  24     public static final String CDM_MODEL_CACHE_NAME = "cdmModelGetMethodsCache";
  25
  26     private static Thread initThread;
  27
  28     private static boolean cacheInitialised = false;
  29
  30     public enum CdmCacheManagerType {
  31         CDMLIB_MODEL,
  32         DEFAULT
  33     }
  34
  35     public static CdmRemoteCacheManager getInstance(){
  36
  37         if(cdmRemoteCacheManager == null) {
  38             cdmRemoteCacheManager = new CdmRemoteCacheManager();
  39         }
  40         return cdmRemoteCacheManager;
  41     }
  42     private CdmRemoteCacheManager() {
  43
  44
  45         try {
  46             // NOTE:Programmatically creating the cache manager may solve the problem of
  47             //      recreating data written to disk on startup
  48             //      see https://stackoverflow.com/questions/1729605/ehcache-persist-to-disk-issues
  49             //String cacheFilePath = CDMLIB_CACHE_MANAGER_CONFIG_RESOURCE.getFile().getAbsolutePath();
  50             //InputStream in = this.getClass().getClassLoader().getResourceAsStream("cdmlib-ehcache.xml");
  51
  52             SizeOfPolicyConfiguration sizeOfConfig = new SizeOfPolicyConfiguration();
  53             sizeOfConfig.setMaxDepth(1000);
  54             sizeOfConfig.setMaxDepthExceededBehavior("abort");
  55
  56             CacheConfiguration modelcc = new CacheConfiguration(CDM_MODEL_CACHE_NAME, 0)
  57             .eternal(true)
  58             .statistics(true)
  59             .sizeOfPolicy(sizeOfConfig)
  60             .overflowToOffHeap(false);
  61
  62             cdmlibModelCache = new Cache(modelcc);
  63
  64             CacheManager.create().addCache(cdmlibModelCache);
  65             CdmModelCacher cmdmc = new CdmModelCacher();
  66             cmdmc.cacheGetterFields(cdmlibModelCache);
  67
  68         } catch (CacheException e) {
  69             throw new CdmClientCacheException(e);
  70         } catch (ClassNotFoundException e) {
  71             throw new CdmClientCacheException(e);
  72         } catch (IOException e) {
  73             throw new CdmClientCacheException(e);
  74         } catch (URISyntaxException e) {
  75             throw new CdmClientCacheException(e);
  76         }
  77
  78     }
  79
  80
  81     public Cache getCdmModelGetMethodsCache(){
  82         return cdmlibModelCache;
  83     }
  84
  85     public static void removeEntityCaches() {
  86         CacheManager cm = CacheManager.create();
  87         String[] cacheNames = CacheManager.create().getCacheNames();
  88         for(String cacheName : cacheNames) {
  89             if(!cacheName.equals(CDM_MODEL_CACHE_NAME)) {
  90                 cm.removeCache(cacheName);
  91             }
  92         }
  93     }
  94 }