Examples of org.infinispan.marshall.core.MarshalledEntry

org.infinispan.marshall.core.MarshalledEntry
Defines an externally persisted entry. External stores that keep the data in serialised form should return an MarshalledEntry that contains the data in binary form (ByteBuffer) and unmarshall it lazily when getKey/Value/Metadata are invoked. This approach avoids unnecessary object (de)serialization e.g when the entries are fetched from the external store for the sole purpose of being sent over the wire to another requestor node. @author Mircea Markus @since 6.0

         taskCount++;
         final Object key = k;
         ecs.submit(new Callable<Void>() {
            @Override
            public Void call() throws Exception {
               final MarshalledEntry marshalledEntry = _load(key, fetchValue, fetchMetadata);
               if (marshalledEntry != null) {
                  task.processEntry(marshalledEntry, taskContext);
               }
               return null;
            }

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               long now = ctx.getTimeService().wallClockTime();
               for (Map.Entry<byte[], byte[]> entry : batch) {
                  if (taskContext.isStopped()) {break;}
                  Object key = unmarshall(entry.getKey());
                  if (filter == null || filter.shouldLoadKey(key)) {
                     MarshalledEntry unmarshall = (MarshalledEntry) unmarshall(entry.getValue());
                     boolean isExpired = unmarshall.getMetadata() != null && unmarshall.getMetadata().isExpired(now);
                     if (!isExpired) {
                        cacheLoaderTask.processEntry(unmarshall, taskContext);
                     }
                  }
               }

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   }


   @Override
   public MarshalledEntry load(Object key)  {
      try {
         MarshalledEntry me = (MarshalledEntry) unmarshall(db.get(marshall(key)));
         if (me == null) return null;


         InternalMetadata meta = me.getMetadata();
         if (meta != null && meta.isExpired(ctx.getTimeService().wallClockTime())) {
            return null;
         }
         return me;
      } catch (Exception e) {

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               byte[] keyBytes = marshall(key);


               byte[] b = db.get(keyBytes);
               if (b == null)
                  continue;
               MarshalledEntry me = (MarshalledEntry) ctx.getMarshaller().objectFromByteBuffer(b);
               if (me.getMetadata() != null && me.getMetadata().isExpired(ctx.getTimeService().wallClockTime())) {
                  // somewhat inefficient to FIND then REMOVE...
                  db.delete(keyBytes);
                  count++;
               }
            }

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      if (!isRetrieval && !ctx.isOriginLocal() && !forceLoad(key, cmd.getFlags())) return null;


      // first check if the container contains the key we need.  Try and load this into the context.
      CacheEntry e = ctx.lookupEntry(key);
      if (e == null || e.isNull() || e.getValue() == null) {
         MarshalledEntry loaded = persistenceManager.loadFromAllStores(key);
         if(loaded == null)
            return Boolean.FALSE;
         InternalMetadata metadata = loaded.getMetadata();
         if (metadata != null && metadata.isExpired(timeService.wallClockTime())) {
            return Boolean.FALSE;
         }
         InternalCacheEntry ice = iceFactory.create(loaded.getKey(), loaded.getValue(), metadata);
         CacheEntry wrappedEntry;
         if (cmd instanceof ApplyDeltaCommand) {
            ctx.putLookedUpEntry(key, ice);
            wrappedEntry = entryFactory.wrapEntryForDelta(ctx, key, ((ApplyDeltaCommand) cmd).getDelta());
         } else {

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               wrapInternalCacheEntry(ctx, key, cmd, oldEntry, isDelta);
               isLoaded.set(null); //not loaded
               return oldEntry; //no changes in container
            }


            MarshalledEntry loaded = internalLoadAndUpdateStats(key, ctx);
            if(loaded == null) {
               isLoaded.set(Boolean.FALSE); //not loaded
               return null; //no changed in container
            }


            InternalCacheEntry newEntry;
            InternalMetadata metadata = loaded.getMetadata();
            if (metadata != null) {
               Metadata actual = metadata instanceof InternalMetadataImpl ? ((InternalMetadataImpl) metadata).actual() :
                     metadata;
               newEntry = factory.create(loaded.getKey(), loaded.getValue(), actual, metadata.created(), metadata.lifespan(),
                                       metadata.lastUsed(), metadata.maxIdle());
            } else {
               //metadata is null!
               newEntry = factory.create(loaded.getKey(), loaded.getValue(), (Metadata) null);
            }
            CacheEntry wrappedEntry = wrapInternalCacheEntry(ctx, key, cmd, newEntry, isDelta);
            recordLoadedEntry(ctx, key, wrappedEntry, newEntry, cmd);
            //afterSuccessfullyLoaded(wrappedEntry);

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      try {
         for (CacheLoader l : loaders) {
            if (!context.isOriginLocal() && isLocalOnlyLoader(l))
               continue;


            MarshalledEntry load = l.load(key);
            if (load != null)
               return load;
         }
         return null;
      } finally {

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      return isLoaded.get();
   }


   private MarshalledEntry internalLoadAndUpdateStats(Object key, InvocationContext context) {
      final MarshalledEntry loaded = persistenceManager.loadFromAllStores(key, context);
      if (getLog().isTraceEnabled()) {
         getLog().tracef("Loaded %s for key %s from persistence.", loaded, key);
      }
      if(loaded == null) {
         return null;
      }
      InternalMetadata metadata = loaded.getMetadata();
      if (metadata != null && metadata.isExpired(timeService.wallClockTime())) {
         return null;
      }
      return loaded;
   }

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   @Override
   public MarshalledEntry loadFromAllStores(Object key) {
      storesMutex.readLock().lock();
      try {
         for (CacheLoader l : loaders) {
            MarshalledEntry load = l.load(key);
            if (load != null)
               return load;
         }
         return null;
      } finally {

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               long now = ctx.getTimeService().wallClockTime();
               for (Map.Entry<byte[], byte[]> entry : batch) {
                  if (taskContext.isStopped()) {break;}
                  Object key = unmarshall(entry.getKey());
                  if (filter == null || filter.accept(key)) {
                     MarshalledEntry unmarshall = (MarshalledEntry) unmarshall(entry.getValue());
                     boolean isExpired = unmarshall.getMetadata() != null && unmarshall.getMetadata().isExpired(now);
                     if (!isExpired) {
                        cacheLoaderTask.processEntry(unmarshall, taskContext);
                     }
                  }
               }

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