Examples of org.jboss.util.stream.MarshalledValueOutputStream

org.jboss.util.stream.MarshalledValueOutputStream
An ObjectOutputStream subclass used by the MarshalledValue class to ensure the classes and proxies are loaded using the thread context class loader. Currently this does not do anything as neither class or proxy annotations are used. @author Scott.Stark@jboss.org @version $Revision: 37406 $


      startLoader(false, null);


      /* Empty state. */
      ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
      MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();


      ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
      MarshalledValueInputStream is = new MarshalledValueInputStream(bais);
      loader.storeEntireState(is);
      is.close();


      baos = new ByteArrayOutputStream(1024);
      os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();


      bais = new ByteArrayInputStream(baos.toByteArray());
      is = new MarshalledValueInputStream(bais);
      loader.storeEntireState(is);
      is.close();


      baos = new ByteArrayOutputStream(1024);
      os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();


      assertEquals(null, loader.get(FQN));


      /* Use a complex object to ensure that the class catalog is used. */
      Complex c1 = new Complex();
      Complex c2 = new Complex(c1);


      /* Add objects. */
      loader.put(FQN, 1, c1);
      loader.put(FQN, 2, c2);
      assertEquals(c1, loader.get(FQN).get(1));
      assertEquals(c2, loader.get(FQN).get(2));
      assertEquals(2, loader.get(FQN).size());


      /* Save state. */
      baos = new ByteArrayOutputStream(1024);
      os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      assertTrue(baos.size() > STREAM_HEADER_LENGTH);
      os.close();


      byte[] savedState = baos.toByteArray();


      /* Clear state. */
      baos = new ByteArrayOutputStream(1024);
      os = new MarshalledValueOutputStream(baos);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();
      bais = new ByteArrayInputStream(baos.toByteArray());
      is = new MarshalledValueInputStream(bais);
      loader.storeEntireState(is);
      is.close();

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   {


      loader.remove(Fqn.fromString("/"));


      ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
      MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      os.close();
      int num = baos.size();


      Object txnKey = new Object();
      List<Modification> mods = createUpdates();
      loader.prepare(txnKey, mods, false);
      loader.rollback(txnKey);


      baos = new ByteArrayOutputStream(1024);
      os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      os.close();


      assertEquals(num, baos.size());
   }

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      assertEquals(c2, loader.get(FQN).get(2));
      assertEquals(2, loader.get(FQN).size());


      /* Save state. */
      ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
      MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();
      assertTrue(baos.size() > 0);


      byte[] savedState = baos.toByteArray();


      /* Restore state. */

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      loader.remove(Fqn.fromString("/"));
      int num;
      try
      {
         ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
         MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
         loader.loadEntireState(os);
         num = baos.size();
      }
      catch (UnsupportedOperationException ex)
      {
         log.info("caught unsupported operation exception that's okay: ", ex);
         return;
      }


      Object txnKey = new Object();
      List<Modification> mods = createUpdates();
      loader.prepare(txnKey, mods, false);
      loader.rollback(txnKey);
      ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
      MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      assertEquals(num, baos.size());
   }

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      loader.remove(Fqn.fromString("/"));
      int num = 0;
      try
      {
         ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
         MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
         loader.loadEntireState(os);
         num = baos.size();
      }
      catch (UnsupportedOperationException ex)
      {
         System.out.println("caught unsupported operation exception that's okay: " + ex);
         return;
      }


      Object txnKey = new Object();
      List<Modification> mods = createUpdates();
      loader.prepare(txnKey, mods, false);
      loader.rollback(txnKey);
      ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
      MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
      loader.loadEntireState(os);
      assertEquals(num, baos.size());
   }

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      assertEquals(2, loader.get(FQN).size());


      // Save state
      byte[] state;
      ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
      MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
      try
      {
         loader.loadEntireState(os);
      }
      catch (UnsupportedOperationException ex)
      {
         System.out.println("caught unsupported operation exception (this is expected): " + ex);
      }
      finally
      {
         cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
         os.close();
         assertTrue(baos.size() > 0);
         state = baos.toByteArray();
      }


      /* Restore state. */

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      assertEquals(c4, loader.get(SUBTREE_FQN).get(2));
      assertEquals(2, loader.get(SUBTREE_FQN).size());


      /* Save state. */
      ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
      MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
      loader.loadState(SUBTREE_FQN, os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();
      assertTrue(baos.size() > 0);
      loader.remove(SUBTREE_FQN);


      /* Restore state. */

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      assertEquals(c4, loader.get(SUBTREE_FQN).get(2));
      assertEquals(2, loader.get(SUBTREE_FQN).size());


      /* Save state. */
      ByteArrayOutputStream baos = new ByteArrayOutputStream(1024);
      MarshalledValueOutputStream os = new MarshalledValueOutputStream(baos);
      loader.loadState(FQN, os);
      cache.getMarshaller().objectToObjectStream(StateTransferManager.STREAMING_DELIMITER_NODE, os);
      os.close();
      assertTrue(baos.size() > 0);


      /* Restore state. */
      ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
      MarshalledValueInputStream is = new MarshalledValueInputStream(bais);

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      hm.put(null, null);
      hm.put("y", "z");
      MapCopy<String, String> mc = new MapCopy<String, String>(hm);
      assertEquals(hm, mc);
      ByteArrayOutputStream os = new ByteArrayOutputStream();
      ObjectOutputStream oos = new MarshalledValueOutputStream(os);
      oos.writeObject(mc);
      ByteArrayInputStream is = new ByteArrayInputStream(os.toByteArray());
      ObjectInputStream ois = new MarshalledValueInputStream(is);
      Object o = ois.readObject();
      assertEquals(hm, o);
   }

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     * @return serialized form of the object
     */
    public static byte[] objectToByteBuffer(Object obj) throws Exception
    {
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        MarshalledValueOutputStream out = new MarshalledValueOutputStream(baos);
        out.writeObject(obj);
        out.close();
        return baos.toByteArray();
    }

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