Examples of net.sf.ehcache.Cache

net.sf.ehcache.Cache
Cache is the central class in ehcache. Caches have {@link Element}s and are managed by the {@link CacheManager}. The Cache performs logical actions. It delegates physical implementations to its {@link net.sf.ehcache.store.Store}s.
A reference to a Cache can be obtained through the {@link CacheManager}. A Cache thus obtained is guaranteed to have status {@link Status#STATUS_ALIVE}. This status is checked for any method which throws {@link IllegalStateException} and the same thrown if it is not alive. This would normallyhappen if a call is made after {@link CacheManager#shutdown} is invoked.
Cache is threadsafe.
Statistics on cache usage are collected and made available through the {@link #getStatistics()} methods.
Various decorators are available for Cache, such as BlockingCache, SelfPopulatingCache and the dynamic proxy ExceptionHandlingDynamicCacheProxy. See each class for details. @author Greg Luck @version $Id: Cache.java 793 2008-10-07 07:28:03Z gregluck $

  public static CacheManager getCacheManager() {
    return cacheManager;
  }
  
  static Cache getOrAddCache(String cacheName) {
    Cache cache = cacheManager.getCache(cacheName);
    if (cache == null) {
      synchronized(cacheManager) {
        cache = cacheManager.getCache(cacheName);
        if (cache == null) {
          log.warn("Could not find cache config [" + cacheName + "], using default.");

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  /**
   * {@inheritDoc}
   */
  public void flushRegionCache(String region) {
    Cache cache = this.cacheManager.getCache( region );
    if ( cache != null ) {
      cache.flush();
    }
  }

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  /**
   * {@inheritDoc}
   */
  public void flushRegionCaches() {
    for ( String name : cacheManager.getCacheNames() ) {
      Cache cache = this.cacheManager.getCache( name );
      if ( cache != null ) {
        cache.flush();
      }
    }


  }

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   * {@inheritDoc}
   */
  public long getCacheHitCount() {
    long count = 0;
    for ( String name : cacheManager.getCacheNames() ) {
      Cache cache = cacheManager.getCache( name );
      if ( cache != null ) {
        count += cache.getLiveCacheStatistics().getCacheHitCount();
      }
    }
    return count;
  }

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   * {@inheritDoc}
   */
  public long getCacheHitSample() {
    long count = 0;
    for ( String name : cacheManager.getCacheNames() ) {
      Cache cache = cacheManager.getCache( name );
      if ( cache != null ) {
        count += cache.getSampledCacheStatistics().getCacheHitMostRecentSample();
      }
    }
    return count;
  }

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   * {@inheritDoc}
   */
  public long getCacheMissCount() {
    long count = 0;
    for ( String name : cacheManager.getCacheNames() ) {
      Cache cache = cacheManager.getCache( name );
      if ( cache != null ) {
        count += cache.getLiveCacheStatistics().getCacheMissCount();
      }
    }
    return count;
  }

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   * {@inheritDoc}
   */
  public long getCacheMissSample() {
    long count = 0;
    for ( String name : cacheManager.getCacheNames() ) {
      Cache cache = cacheManager.getCache( name );
      if ( cache != null ) {
        count += cache.getSampledCacheStatistics().getCacheMissMostRecentSample();
      }
    }
    return count;
  }

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   * {@inheritDoc}
   */
  public long getCachePutCount() {
    long count = 0;
    for ( String name : cacheManager.getCacheNames() ) {
      Cache cache = cacheManager.getCache( name );
      if ( cache != null ) {
        count += cache.getLiveCacheStatistics().getPutCount();
      }
    }
    return count;
  }

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   * {@inheritDoc}
   */
  public long getCachePutSample() {
    long count = 0;
    for ( String name : cacheManager.getCacheNames() ) {
      Cache cache = cacheManager.getCache( name );
      if ( cache != null ) {
        count += cache.getSampledCacheStatistics().getCacheElementPutMostRecentSample();
      }
    }
    return count;
  }

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  /**
   * {@inheritDoc}
   */
  public int getRegionCacheMaxTTISeconds(String region) {
    Cache cache = cacheManager.getCache( region );
    if ( cache != null ) {
      return (int) cache.getCacheConfiguration().getTimeToIdleSeconds();
    }
    else {
      return -1;
    }
  }

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