Examples of CacheLoader

com.gemstone.gemfire.cache.CacheLoader
javax.cache.CacheLoader
Used for read-through caching and loading data into a cache.
See {@link CacheWriter} which is the corollary for load used for write-through caching. @param < K> the type of keys handled by this loader @param < V> the type of values generated by this loader @author Greg Luck @author Yannis Cosmadopoulos @since 1.0
javax.util.jcache.CacheLoader
This class loads object into the cache with the aid of the abstract load method. Should be extended by the user to implement custom loaders, such as Database queries, Directory searches, File extraction, Net searches etc. @deprecated Will be removed and replaced with an interface. @author Frank Karlstr�m
net.sf.ehcache.loader.CacheLoader
Extends JCache CacheLoader with load methods that take an argument in addition to a key @author Greg Luck @version $Id$
net.sf.jsr107cache.CacheLoader
User should implement this CacheLoader interface to provide a loader object to load the objects into cache.
org.infinispan.loader.CacheLoader
Responsible for loading cache data from an external source @author Manik Surtani @since 4.0
org.infinispan.loaders.CacheLoader
Responsible for loading cache data from an external source @author Manik Surtani @since 4.0
org.infinispan.loaders.spi.CacheLoader
Responsible for loading cache data from an external source @author Manik Surtani @author Navin Surtani @author Tristan Tarrant @since 6.0
org.infinispan.persistence.spi.CacheLoader
Defines the logic for loading data from an external storage. The writing of data is optional and coordinated through a {@link CacheWriter}. @author Mircea Markus @since 6.0
org.jboss.cache.loader.CacheLoader
A {@link org.jboss.cache.loader.CacheLoader} implementation persists and load keys to and fromsecondary storage, such as a database or filesystem. Typically, implementations store a series of keys and values (an entire {@link Map}) under a single {@link Fqn}. Loading and saving properties of an entire {@link Map} should be atomic.
Lifecycle: First an instance of the loader is created, then the configuration ( {@link #setConfig(org.jboss.cache.config.CacheLoaderConfig.IndividualCacheLoaderConfig)}) and cache ( {@link #setCache(CacheSPI)}) are set. After this, {@link #create()} is called.Then {@link #start()} is called. When re-deployed, {@link #stop()} will becalled, followed by another {@link #start()}. Finally, when shut down, {@link #destroy()} is called, after which the loader is unusable.
An {@link org.jboss.cache.loader.AbstractCacheLoader} is provided as a convenient starting placewhen implementing your own {@link org.jboss.cache.loader.CacheLoader}.
It is important to note that all implementations are thread safe, as concurrent reads and writes, potentially even to the same {@link Fqn}, are possible.
@author Manik Surtani (manik AT jboss DOT org) @see CacheSPI @see org.jboss.cache.config.CacheLoaderConfig.IndividualCacheLoaderConfig @see org.jboss.cache.loader.AbstractCacheLoader @since 2.0.0

Examples of org.jboss.cache.loader.CacheLoader

      if (clm == null)
      {
         LOG.error("The CacheLoaderManager cannot be found");
         return;
      }
      CacheLoader currentCL = clm.getCacheLoader();
      if (currentCL == null)
      {
         LOG.error("The CacheLoader cannot be found");
         return;
      }

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Examples of org.jboss.cache.loader.CacheLoader

      if (clm == null)
      {
         LOG.error("The CacheLoaderManager cannot be found");
         return;
      }
      CacheLoader currentCL = clm.getCacheLoader();
      if (currentCL == null)
      {
         LOG.error("The CacheLoader cannot be found");
         return;
      }

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Examples of org.jboss.cache.loader.CacheLoader

      {
         LOG.error("The CacheLoaderManager cannot be found");
         return null;
      }


      CacheLoader currentCL = clm.getCacheLoader();
      if (currentCL == null)
      {
         LOG.error("The CacheLoader cannot be found");
         return null;
      }

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Examples of org.jboss.cache.loader.CacheLoader

   }


   protected void integratePersistentState(ObjectInputStream in, Fqn targetFqn) throws Exception
   {
      CacheLoaderManager loaderManager = cache.getCacheLoaderManager();
      CacheLoader loader = loaderManager == null ? null : loaderManager.getCacheLoader();
      if (loader == null)
      {
         if (trace)
         {
            log.trace("cache loader is null, will not attempt to integrate persistent state");
         }
      }
      else
      {


         if (trace)
         {
            log.trace("integrating persistent state using " + loader.getClass().getName());
         }


         boolean persistentSet = false;
         try
         {
            if (targetFqn.isRoot())
            {
               loader.storeEntireState(in);
            }
            else
            {
               loader.storeState(targetFqn, in);
            }
            persistentSet = true;
         }
         catch (ClassCastException cce)
         {
            log.error("Failed integrating persistent state. One of cacheloaders is not"
                  + " adhering to state stream format. See JBCACHE-738.");
            throw cce;
         }
         finally
         {
            if (!persistentSet)
            {
               log.warn("persistent state integration failed, removing all nodes from loader");
               loader.remove(targetFqn);
            }
            else
            {
               if (trace)
               {

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Examples of org.jboss.cache.loader.CacheLoader


   protected void integratePersistentState(ObjectInputStream in, Fqn targetFqn) throws Exception
   {
      if (trace) log.trace("Reading persistent state from stream");
      CacheLoaderManager loaderManager = cache.getCacheLoaderManager();
      CacheLoader loader = loaderManager == null ? null : loaderManager.getCacheLoader();
      if (loader == null)
      {
         if (log.isTraceEnabled())
         {
            log.trace("cache loader is null, will not attempt to integrate persistent state");
         }
      }
      else
      {


         if (log.isTraceEnabled())
         {
            log.trace("integrating persistent state using " + loader.getClass().getName());
         }


         boolean persistentSet = false;
         try
         {
            if (targetFqn.isRoot())
            {
               loader.storeEntireState(in);
            }
            else
            {
               loader.storeState(targetFqn, in);
            }
            persistentSet = true;
         }
         catch (ClassCastException cce)
         {
            log.error("Failed integrating persistent state. One of cacheloaders is not"
                  + " adhering to state stream format. See JBCACHE-738.");
            throw cce;
         }
         finally
         {
            if (!persistentSet)
            {
               log.warn("persistent state integration failed, removing all nodes from loader");
               loader.remove(targetFqn);
            }
            else
            {
               if (log.isTraceEnabled())
               {

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Examples of org.jboss.cache.loader.CacheLoader

            //we have to write two markers for transient and associated
            delimitStream(out);
            delimitStream(out);
         }


         CacheLoader cacheLoader = cache.getCacheLoaderManager() == null ? null : cache.getCacheLoaderManager().getCacheLoader();
         if (cacheLoader != null && generatePersistent)
         {
            if (log.isTraceEnabled())
            {
               log.trace("writing persistent state for " + fqn + ",using " + cache.getCacheLoaderManager().getCacheLoader().getClass());
            }


            if (fqn.isRoot())
            {
               cacheLoader.loadEntireState(out);
            }
            else
            {
               cacheLoader.loadState(fqn, out);
            }


            if (log.isTraceEnabled())
            {
               log.trace("persistent state succesfully written");

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Examples of org.jboss.cache.loader.CacheLoader

            //we have to write two markers for transient and associated
            delimitStream(out);
            delimitStream(out);
         }


         CacheLoader cacheLoader = cache.getCacheLoaderManager() == null ? null : cache.getCacheLoaderManager().getCacheLoader();
         if (cacheLoader != null && generatePersistent)
         {
            if (log.isTraceEnabled())
            {
               log.trace("writing persistent state for " + fqn + ",using " + cache.getCacheLoaderManager().getCacheLoader().getClass());
            }


            if (fqn.isRoot())
            {
               cacheLoader.loadEntireState(out);
            }
            else
            {
               cacheLoader.loadState(fqn, out);
            }


            if (log.isTraceEnabled())
            {
               log.trace("persistent state succesfully written");

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Examples of org.jboss.cache.loader.CacheLoader

   }


   protected void integratePersistentState(ObjectInputStream in, Fqn targetFqn) throws Exception
   {
      CacheLoaderManager loaderManager = cache.getCacheLoaderManager();
      CacheLoader loader = loaderManager == null ? null : loaderManager.getCacheLoader();
      if (loader == null)
      {
         if (trace)
         {
            log.trace("cache loader is null, will not attempt to integrate persistent state");
         }
      }
      else
      {


         if (trace)
         {
            log.trace("integrating persistent state using " + loader.getClass().getName());
         }


         boolean persistentSet = false;
         try
         {
            if (targetFqn.isRoot())
            {
               loader.storeEntireState(in);
            }
            else
            {
               loader.storeState(targetFqn, in);
            }
            persistentSet = true;
         }
         catch (ClassCastException cce)
         {
            log.error("Failed integrating persistent state. One of cacheloaders is not"
                  + " adhering to state stream format. See JBCACHE-738.");
            throw cce;
         }
         finally
         {
            if (!persistentSet)
            {
               log.warn("persistent state integration failed, removing all nodes from loader");
               loader.remove(targetFqn);
            }
            else
            {
               if (trace)
               {

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Examples of org.jboss.cache.loader.CacheLoader

               }


               CacheLoaderManager clm = c.getCacheLoaderManager();
               if (clm != null)
               {
                  CacheLoader cl = c.getCacheLoaderManager().getCacheLoader();
                  try
                  {
                     if (cl != null) cl.remove(Fqn.ROOT);
                  }
                  catch (Exception e)
                  {
                     // unable to clean cache loader
                     e.printStackTrace();

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Examples of org.jboss.cache.loader.CacheLoader

{


   public void testLoaderIndependently() throws Exception
   {
      CacheSPI cache = createCacheWithLoader();
      CacheLoader loader = cache.getCacheLoaderManager().getCacheLoader();


      // test the cache loader independently first ...
      loader.remove(fqn);
      assert loader.get(fqn) == null;
      loader.put(fqn, key, value);
      assertEquals(value, loader.get(fqn).get(key));
      // clean up
      loader.remove(fqn);
      assertNull(loader.get(fqn));
   }

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