Examples of org.hibernate.cache.spi.QueryCache

org.hibernate.cache.spi.QueryCache
Defines the contract for caches capable of storing query results. These caches should only concern themselves with storing the matching result ids. The transactional semantics are necessarily less strict than the semantics of an item cache. @author Gavin King


    if ( !settings.isQueryCacheEnabled() ) {
      return null;
    }


    QueryCache currentQueryCache = queryCaches.get( regionName );
    if ( currentQueryCache == null ) {
      synchronized ( allCacheRegions ) {
        currentQueryCache = queryCaches.get( regionName );
        if ( currentQueryCache == null ) {
          currentQueryCache = settings.getQueryCacheFactory()
              .getQueryCache(
                  regionName,
                  updateTimestampsCache,
                  settings,
                  sessionFactory.getProperties()
              );
          queryCaches.put( regionName, currentQueryCache );
          allCacheRegions.put( currentQueryCache.getRegion().getName(), currentQueryCache.getRegion() );
        }
        else {
          return currentQueryCache;
        }
      }

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    if ( settings.isQueryCacheEnabled() )  {
      queryCache.destroy();


      iter = queryCaches.values().iterator();
      while ( iter.hasNext() ) {
        QueryCache cache = (QueryCache) iter.next();
        cache.destroy();
      }
      updateTimestampsCache.destroy();
    }


    settings.getRegionFactory().stop();

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    if ( !settings.isQueryCacheEnabled() ) {
      return null;
    }


    QueryCache currentQueryCache = queryCaches.get( regionName );
    if ( currentQueryCache == null ) {
      currentQueryCache = settings.getQueryCacheFactory().getQueryCache( regionName, updateTimestampsCache, settings, properties );
      queryCaches.put( regionName, currentQueryCache );
      allCacheRegions.put( currentQueryCache.getRegion().getName(), currentQueryCache.getRegion() );
    }


    return currentQueryCache;
  }

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    public void evictQueryRegion(String regionName) {
            if (regionName == null) throw new NullPointerException(
                                                                   "Region-name cannot be null (use Cache#evictDefaultQueryRegion to evict the default query cache)");
            if (settings.isQueryCacheEnabled()) {
                QueryCache namedQueryCache = queryCaches.get(regionName);
                // TODO : cleanup entries in queryCaches + allCacheRegions ?
                if (namedQueryCache != null) namedQueryCache.clear();
      }
    }

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      final SessionImplementor session,
      final QueryParameters queryParameters,
      final Set<Serializable> querySpaces,
      final Type[] resultTypes) {


    QueryCache queryCache = factory.getQueryCache( queryParameters.getCacheRegion() );


    QueryKey key = generateQueryKey( session, queryParameters );


    if ( querySpaces == null || querySpaces.size() == 0 )
      LOG.tracev( "Unexpected querySpaces is {0}", ( querySpaces == null ? querySpaces : "empty" ) );

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      final SessionImplementor session,
      final QueryParameters queryParameters,
      final Set querySpaces,
      final Type[] resultTypes) {


    QueryCache queryCache = factory.getQueryCache( queryParameters.getCacheRegion() );


    QueryKey key = generateQueryKey( session, queryParameters );


    if ( querySpaces == null || querySpaces.size() == 0 )
      LOG.tracev( "Unexpected querySpaces is {0}", ( querySpaces == null ? querySpaces : "empty" ) );

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      throw new NullPointerException(
          "Region-name cannot be null (use Cache#evictDefaultQueryRegion to evict the default query cache)"
      );
    }
    if ( sessionFactory.getSettings().isQueryCacheEnabled() ) {
      QueryCache namedQueryCache = queryCaches.get( regionName );
      // TODO : cleanup entries in queryCaches + allCacheRegions ?
      if ( namedQueryCache != null ) {
                if ( LOG.isDebugEnabled() ) {
                    LOG.debugf( "Evicting query cache, region: %s", regionName );
                }
        namedQueryCache.clear();
      }
    }
  }

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    if ( settings.isQueryCacheEnabled() ) {
      queryCache.destroy();


      Iterator iter = queryCaches.values().iterator();
      while ( iter.hasNext() ) {
        QueryCache cache = (QueryCache) iter.next();
        cache.destroy();
      }
      updateTimestampsCache.destroy();
    }


    regionFactory.stop();

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    if ( !settings.isQueryCacheEnabled() ) {
      return null;
    }


    QueryCache currentQueryCache = queryCaches.get( regionName );
    if ( currentQueryCache == null ) {
      synchronized ( allCacheRegions ) {
        currentQueryCache = queryCaches.get( regionName );
        if ( currentQueryCache == null ) {
          currentQueryCache = settings.getQueryCacheFactory()
              .getQueryCache(
                  regionName,
                  updateTimestampsCache,
                  settings,
                  sessionFactory.getProperties()
              );
          queryCaches.put( regionName, currentQueryCache );
          allCacheRegions.put( currentQueryCache.getRegion().getName(), currentQueryCache.getRegion() );
        }
        else {
          return currentQueryCache;
        }
      }

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    if ( settings.isQueryCacheEnabled() )  {
      queryCache.destroy();


      iter = queryCaches.values().iterator();
      while ( iter.hasNext() ) {
        QueryCache cache = (QueryCache) iter.next();
        cache.destroy();
      }
      updateTimestampsCache.destroy();
    }


    settings.getRegionFactory().stop();

View Full Code Here

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Related Classes of org.hibernate.cache.spi.QueryCache

org.hibernate.internal.CacheImpl

org.hibernate.internal.SessionFactoryImpl

org.hibernate.internal.SessionFactoryImpl$CacheImpl

org.hibernate.loader.Loader

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