Examples of sun.rmi.server.MarshalOutputStream

sun.rmi.server.MarshalOutputStream
A MarshalOutputStream extends ObjectOutputStream to add functions specific to marshaling of remote object references. If it is necessary to serialize remote objects or objects that contain references to remote objects a MarshalOutputStream must be used instead of ObjectOutputStream.
A new MarshalOutputStream is constructed to serialize remote objects or graphs containing remote objects. Objects are written to the stream using the ObjectOutputStream.writeObject method.
MarshalOutputStream maps remote objects to the corresponding remote stub and embeds the location from which to load the stub classes. The location may be ignored by the client but is supplied.


    //Write message type
    log.log (Level.FINEST, "Writing return header");
    out.writeByte (TransportConstants.Return);


    MarshalOutputStream objOut = new MarshalOutputStream (out);


    //Write return header
    objOut.writeByte (TransportConstants.NormalReturn);
    uid.write (objOut);
    
    //Write a stub that points back to this port
    log.log (Level.FINEST, "Writing new stub");
    /* This used to write out a new stub, but since I've removed the stub code
     * from the source base, I'm just writing out null here so I can get it to
     * compile.  This won't work, but this class has been deprecated, so I don't
     * really care. */
    objOut.writeObject (null);


    objOut.flush ();
    
    log.exiting ("com.sun.grid.jgrid.proxy.ComputeProxy", "processLookupCall");
  }

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    //Write message type
    log.log (Level.FINEST, "Writing return header");
    out.writeByte (TransportConstants.Return);


    MarshalOutputStream objOut = new MarshalOutputStream (out);


    //Write message header
    objOut.writeByte (TransportConstants.NormalReturn);
    uid.write (objOut);
    
    /* We don't do anything with this call because we don't have any actual
     * objects to keep track of. */


    objOut.flush ();
    
    log.exiting ("com.sun.grid.jgrid.proxy.ComputeProxy", "processCleanCall");
  }

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    //Write message type
    log.log (Level.FINEST, "Writing return header");
    out.writeByte (TransportConstants.Return);


    MarshalOutputStream objOut = new MarshalOutputStream (out);


    //Write message header
    objOut.writeByte (TransportConstants.NormalReturn);
    uid.write (objOut);


    //If the lease we were passed has a valid VM ID, write it
    if (lease.getVMID () != null) {
      log.log (Level.FINEST, "Writing old lease object");
      objOut.writeObject (lease);
    }
    //If not, create a valid lease and write it
    else {
      log.log (Level.FINEST, "Writing new lease object");
      objOut.writeObject (new Lease (new VMID (), lease.getValue ()));
    }


    objOut.flush ();
    
    log.exiting ("com.sun.grid.jgrid.proxy.ComputeProxy", "processDirtyCall");
  }

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    //Write message type
    log.log (Level.FINEST, "Writing return header");
    out.writeByte (TransportConstants.Return);


    MarshalOutputStream objOut = new MarshalOutputStream (out);


    //Write message header
    if (returnValue instanceof Throwable) {
      log.log (Level.FINER, "Exceptional return");
      objOut.writeByte (TransportConstants.ExceptionalReturn);


      //If the exception is a RemoteException, wrap it in a RemoteException
      if (!(returnValue instanceof RemoteException)) {
        log.log (Level.FINEST, "Wrapping exception in RemoteException");
        returnValue = new RemoteException ("An error occured while processing the Computable object", (Throwable)returnValue);
      }
    }
    else {
      log.log (Level.FINER, "Normal return");
      objOut.writeByte (TransportConstants.NormalReturn);
    }


    uid.write (objOut);
    
    //Write results
    log.log (Level.FINEST, "Writing results");
    objOut.writeObject (returnValue);


    objOut.flush ();
    
    log.exiting ("com.sun.grid.jgrid.proxy.ComputeProxy", "processComputeCall");
  }

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    //Write message type
    log.log (Level.FINEST, "Writing return header");
    out.writeByte (TransportConstants.Return);


    MarshalOutputStream objOut = new MarshalOutputStream (out);


    //Write message header
    objOut.writeByte (TransportConstants.NormalReturn);
    uid.write (objOut);
    
    //Write results
    log.log (Level.FINEST, "Writing results");
    if (lock instanceof Lock) {
      log.log (Level.FINE, "Process is not complete");
      objOut.writeObject (null);
    }
    else {
      log.log (Level.FINE, "Process is complete");
      objOut.writeObject (lock);
      lockbox.remove (id);
    }
    
    objOut.flush ();


    log.log (Level.FINER, "Deleting job file");
    this.deleteJob (id);
    
    log.exiting ("com.sun.grid.jgrid.proxy.ComputeProxy", "processGetResultsCall");

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    //Write message type
    log.log (Level.FINEST, "Writing return header");
    out.writeByte (TransportConstants.Return);


    MarshalOutputStream objOut = new MarshalOutputStream (out);


    //Write message header
    objOut.writeByte (TransportConstants.NormalReturn);
    uid.write (objOut);
    
    //Write results
    log.log (Level.FINEST, "Writing results");
    if (lock instanceof Lock) {
      log.log (Level.FINE, "Process is not complete");
      objOut.writeBoolean (false);
    }
    else {
      log.log (Level.FINE, "Process is complete");
      objOut.writeBoolean (true);
    }
    
    objOut.flush ();
    
    log.exiting ("com.sun.grid.jgrid.proxy.ComputeProxy", "processIsCompleteCall");
  }

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     * @param value the snapshot
     * @exception Exception can raise any exception
     */
    public
    void snapshot(OutputStream out, Object value) throws Exception {
        MarshalOutputStream s = new MarshalOutputStream(out);
        s.writeObject(value);
        s.flush();
    }

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     * @exception Exception can raise any exception
     */
    public
    void writeUpdate(LogOutputStream out, Object value) throws Exception {


        MarshalOutputStream s = new MarshalOutputStream(out);
        s.writeObject(value);
        s.flush();
    }

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Related Classes of sun.rmi.server.MarshalOutputStream

com.sun.grid.jgrid.proxy.ComputeProxy

sun.rmi.transport.Target

sun.rmi.log.LogHandler

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