Examples of org.jboss.util.stream.MarshalledValueInputStream

org.jboss.util.stream.MarshalledValueInputStream
An ObjectInputStream subclass used by the MarshalledValue class to ensure the classes and proxies are loaded using the thread context class loader. @author Scott.Stark@jboss.org @version $Revision: 37406 $


   public void setState(String stateId, InputStream istream)
   {
      if (trace) log.trace("Receiving state for " + stateId);
      String targetRoot = stateId;
      MarshalledValueInputStream in = null;
      boolean hasDifferentSourceAndIntegrationRoots = stateId.indexOf(DefaultStateTransferManager.PARTIAL_STATE_DELIMITER) > 0;
      if (hasDifferentSourceAndIntegrationRoots)
      {
         targetRoot = stateId.split(DefaultStateTransferManager.PARTIAL_STATE_DELIMITER)[1];
      }
      if (istream == null)
      {
         log.debug("stream is null (may be first member in cluster). State is not set");
         return;
      }


      try
      {
         log.debug("Setting received partial state for subroot " + stateId);
         in = new MarshalledValueInputStream(istream);
         Fqn subroot = Fqn.fromString(targetRoot);
//            Region region = regionManager.getRegion(subroot, false);
//            ClassLoader cl = null;
//            if (region != null)
//            {

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      {
         return null;
      }


      ByteArrayInputStream bais = new ByteArrayInputStream(bytes);
      MarshalledValueInputStream input = new MarshalledValueInputStream(bais);
      Object result = input.readObject();
      input.close();
      return result;
   }

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      if (bytes == null)
      {
         return null;
      }


      MarshalledValueInputStream input = new MarshalledValueInputStream(bytes);
      Object result = input.readObject();
      input.close();
      return result;
   }

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   @Override
   public Object objectFromByteBuffer(byte[] bytes, int offset, int len) throws Exception
   {
      Marshaller marshaller;
      int versionId;
      ObjectInputStream in = new MarshalledValueInputStream(new ByteArrayInputStream(bytes, offset, len));


      try
      {
         versionId = in.readShort();
         if (trace) log.trace("Read version " + versionId);
      }
      catch (Exception e)
      {
         log.error("Unable to read version id from first two bytes of stream, barfing.");

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   @Override
   public RegionalizedMethodCall regionalizedMethodCallFromByteBuffer(byte[] buf) throws Exception
   {
      Marshaller marshaller;
      int versionId;
      ObjectInputStream in = new MarshalledValueInputStream(new ByteArrayInputStream(buf));


      try
      {
         versionId = in.readShort();
         if (trace) log.trace("Read version " + versionId);
      }
      catch (Exception e)
      {
         log.error("Unable to read version id from first two bytes of stream, barfing.");

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         // actually attempt to "stream" this stuff.  We need to revert to an old-fashioned Object Input Stream since
         // we don't have a reusable implementation for non-byte-backed streams as yet.
         short versionId;
         Marshaller marshaller;


         ObjectInputStream in = new MarshalledValueInputStream(is);


         try
         {
            versionId = in.readShort();
            if (trace) log.trace("Read version " + versionId);
         }
         catch (Exception e)
         {
            log.error("Unable to read version id from first two bytes of stream, barfing.");

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      {
         try
         {
            ByteArrayInputStream bais = new ByteArrayInputStream(raw);
            // use a MarshalledValueInputStream since it needs to be aware of any context class loaders on the current thread.
            ObjectInputStream ois = new MarshalledValueInputStream(bais);
            instance = ois.readObject();
            ois.close();
            bais.close();
//            raw = null;
         }
         catch (Exception e)
         {

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         state = baos.toByteArray();
      }


      /* Restore state. */
      ByteArrayInputStream bais = new ByteArrayInputStream(state);
      MarshalledValueInputStream is = new MarshalledValueInputStream(bais);
      try
      {
         loader.storeEntireState(is);
      }
      catch (UnsupportedOperationException ex)
      {
         System.out.println("caught unsupported operation exception (this is expected): " + ex);
      }
      finally
      {
         is.close();
      }


      addDelay();
      assertEquals(c1, loader.get(FQN).get(1));
      assertEquals(c2, loader.get(FQN).get(2));

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      loader.remove(SUBTREE_FQN);


      /* Restore state. */


      ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
      MarshalledValueInputStream is = new MarshalledValueInputStream(bais);
      loader.storeState(SUBTREE_FQN, is);
      is.close();
      addDelay();
      assertEquals(c1, loader.get(FQN).get(1));
      assertEquals(c2, loader.get(FQN).get(2));
      assertEquals(2, loader.get(FQN).size());
      assertEquals(c3, loader.get(SUBTREE_FQN).get(1));

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      os.close();
      assertTrue(baos.size() > 0);


      /* Restore state. */
      ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
      MarshalledValueInputStream is = new MarshalledValueInputStream(bais);
      loader.storeState(BUDDY_BASE, is);
      is.close();
      addDelay();
      assertEquals(c1, loader.get(BUDDY_PLUS_FQN).get(1));
      assertEquals(c2, loader.get(BUDDY_PLUS_FQN).get(2));
      assertEquals(2, loader.get(BUDDY_PLUS_FQN).size());
      assertEquals(c3, loader.get(BUDDY_PLUS_SUBTREE_FQN).get(1));

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