Examples of org.infinispan.marshall.core.MarshalledValue$Externalizer

org.infinispan.marshall.core.MarshalledValue
Wrapper that wraps cached data, providing lazy deserialization using the calling thread's context class loader.
The {@link org.infinispan.interceptors.MarshalledValueInterceptor} handles transparent wrapping/unwrapping of cacheddata.
NOTE: the equals() method of this class will compare binary representations (byte arrays).
Note also that this will affect the way keys stored in the cache will work, if storeAsBinary is used, since comparisons happen on the key which will be wrapped by a {@link MarshalledValue}. Implementers of equals() methods of their keys need to be aware of this.
This class can be marshalled either via its externalizer or via the JVM serialization. The reason for supporting both methods is to enable third-party libraries to be able to marshall/unmarshall them using standard JVM serialization rules. The Infinispan marshalling layer will always chose the most performant one, aka the externalizer method. @author Manik Surtani (manik@jboss.org) @author Mircea.Markus@jboss.com @author Galder Zamarreño @author Sanne Grinovero @see org.infinispan.interceptors.MarshalledValueInterceptor @since 4.0

      }
   }


   private Object compact(Object val) {
      if (val instanceof MarshalledValue) {
         MarshalledValue marshalled = (MarshalledValue) val;
         if (marshalled.getRaw().size() < marshalled.getRaw().getRaw().length) {
            byte[] compactedArray = Arrays.copyOfRange(marshalled.getRaw().getRaw(), 0, marshalled.getRaw().size());
            return new MarshalledValue(compactedArray, marshalled.hashCode(), marshalled.getMarshaller());
         }
      }
      return val;
   }

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   }


   public void testMarshalledValueMarshalling() throws Exception {
      Person p = new Person();
      p.setName("Bob Dylan");
      MarshalledValue mv = new MarshalledValue(p, true, marshaller);
      marshallAndAssertEquality(mv);
   }

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      marshallAndAssertEquality(mv);
   }


   public void testMarshalledValueGetMarshalling() throws Exception {
      Pojo ext = new Pojo();
      MarshalledValue mv = new MarshalledValue(ext, true, marshaller);
      byte[] bytes = marshaller.objectToByteBuffer(mv);
      MarshalledValue rmv = (MarshalledValue) marshaller.objectFromByteBuffer(bytes);
      assert rmv.equals(mv) : "Writen[" + mv + "] and read[" + rmv + "] objects should be the same";
      assert rmv.get() instanceof Pojo;
   }

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      DataContainer dc1 = TestingUtil.extractComponent(cache1, DataContainer.class);


      InternalCacheEntry ice = dc1.get("key");
      Object o = ice.getValue();
      assertTrue(o instanceof MarshalledValue);
      MarshalledValue mv = (MarshalledValue) o;
      assertDeserialized(mv);
      assertEquals(value, cache1.get("key"));
      assertDeserialized(mv);
      assertSerializationCounts(1, 0);
      cache1.compact();

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      DataContainer dc1 = TestingUtil.extractComponent(cache1, DataContainer.class);


      Object o = dc1.keySet().iterator().next();
      assertTrue(o instanceof MarshalledValue);
      MarshalledValue mv = (MarshalledValue) o;
      assertDeserialized(mv);


      assertEquals("value", cache1.get(key));
      assertDeserialized(mv);
      assertSerializationCounts(1, 0);

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      }
   }


   public void testEqualsAndHashCode() throws Exception {
      Pojo pojo = new Pojo();
      MarshalledValue mv = new MarshalledValue(pojo, true, extractCacheMarshaller(cache(0)));
      assertDeserialized(mv);
      int oldHashCode = mv.hashCode();


      mv.serialize();
      assertSerialized(mv);
      assertTrue(oldHashCode == mv.hashCode());


      MarshalledValue mv2 = new MarshalledValue(pojo, true, extractCacheMarshaller(cache(0)));
      assertSerialized(mv);
      assertDeserialized(mv2);


      assertTrue(mv2.hashCode() == oldHashCode);
      assertEquals(mv, mv2);
   }

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   public void testEquality() {
      byte[] prevBytes = TestingUtil.generateRandomString(1310)
            .getBytes(Charset.forName("UTF-8"));


      String value = "galder";
      MarshalledValue mv = new MarshalledValue(
            value, true, extractCacheMarshaller(cache(0, "replSync")));
      MarshalledValue mv2 = new MarshalledValue(
            value, false, extractCacheMarshaller(cache(0, "replSync")));


      // Simulate that the marshalled value had a bigger value before
      mv2.instance = prevBytes;
      mv2.serialize();
      // Now back to the original instance and force it to serialize again
      mv2.instance = value;
      mv2.raw = null;
      mv2.serialize();
      mv2.instance = null;


      assertEquals(mv, mv2);
   }

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      assert null == cs.load("k1");
   }


   public void testLoadAndStoreMarshalledValues() throws CacheLoaderException {
      MarshalledValue key = new MarshalledValue(new Pojo().role("key"), true, getMarshaller());
      MarshalledValue key2 = new MarshalledValue(new Pojo().role("key2"), true, getMarshaller());
      MarshalledValue value = new MarshalledValue(new Pojo().role("value"), true, getMarshaller());


      assert !cs.containsKey(key);
      InternalCacheEntry se = TestInternalCacheEntryFactory.create(key, value);
      cs.store(se);

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   }


   public void testMarshalledValueMarshalling() throws Exception {
      Person p = new Person();
      p.setName("Bob Dylan");
      MarshalledValue mv = new MarshalledValue(p, marshaller);
      marshallAndAssertEquality(mv);
   }

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      marshallAndAssertEquality(mv);
   }


   public void testMarshalledValueGetMarshalling() throws Exception {
      Pojo ext = new Pojo();
      MarshalledValue mv = new MarshalledValue(ext, marshaller);
      byte[] bytes = marshaller.objectToByteBuffer(mv);
      MarshalledValue rmv = (MarshalledValue) marshaller.objectFromByteBuffer(bytes);
      assert rmv.equals(mv) : "Writen[" + mv + "] and read[" + rmv + "] objects should be the same";
      assert rmv.get() instanceof Pojo;
   }

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