uka.transport
Class DeepClone.CopyMarshalStream

java.lang.Object
  java.io.OutputStream
      java.io.ObjectOutputStream
          uka.transport.DeepClone.CopyMarshalStream

All Implemented Interfaces:

java.io.DataOutput, java.io.ObjectOutput, java.io.ObjectStreamConstants

Enclosing class:

DeepClone

final class DeepClone.CopyMarshalStream

extends java.io.ObjectOutputStream

Nested Class Summary

Nested classes inherited from class java.io.ObjectOutputStream

java.io.ObjectOutputStream.PutField

Field Summary

Fields inherited from class java.io.ObjectOutputStream

Fields inherited from interface java.io.ObjectStreamConstants

baseWireHandle, PROTOCOL_VERSION_1, PROTOCOL_VERSION_2, SC_BLOCK_DATA, SC_EXTERNALIZABLE, SC_SERIALIZABLE, SC_WRITE_METHOD, STREAM_MAGIC, STREAM_VERSION, SUBCLASS_IMPLEMENTATION_PERMISSION, SUBSTITUTION_PERMISSION, TC_ARRAY, TC_BASE, TC_BLOCKDATA, TC_BLOCKDATALONG, TC_CLASS, TC_CLASSDESC, TC_ENDBLOCKDATA, TC_EXCEPTION, TC_LONGSTRING, TC_MAX, TC_NULL, TC_OBJECT, TC_PROXYCLASSDESC, TC_REFERENCE, TC_RESET, TC_STRING

Constructor Summary

DeepClone.CopyMarshalStream(java.io.OutputStream outputstream)

Method Summary

protected java.lang.Object	replaceObject(java.lang.Object orig) Inspects each object of an object graph that is written to the DeepClone.CopyMarshalStream.
protected void	writeStreamHeader() Do not write a stream header.

Methods inherited from class java.io.ObjectOutputStream

annotateClass, annotateProxyClass, close, defaultWriteObject, drain, enableReplaceObject, flush, putFields, reset, useProtocolVersion, write, write, write, writeBoolean, writeByte, writeBytes, writeChar, writeChars, writeClassDescriptor, writeDouble, writeFields, writeFloat, writeInt, writeLong, writeObject, writeObjectOverride, writeShort, writeUnshared, writeUTF

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DeepClone.CopyMarshalStream

public DeepClone.CopyMarshalStream(java.io.OutputStream outputstream)
                            throws java.io.IOException

Method Detail

writeStreamHeader

protected void writeStreamHeader()
                          throws java.io.IOException

Do not write a stream header.

Throws:

java.io.IOException

replaceObject

protected java.lang.Object replaceObject(java.lang.Object orig)
                                  throws java.io.IOException

Inspects each object of an object graph that is written to the DeepClone.CopyMarshalStream. Objects that are cloned using marshaling/unmarshaling are nevertheless entered in the DeepClone.originals space with the following trick: During the marshaling process, each marshaled object is presented to this method. It assigns an identifier, but can not yet enter the copy into the DeepClone.copies space. Unfortunately, the objects that are read back are presented to the DeepClone.CopyUnmarshalStream.resolveObject(Object) method in dept-first postorder, while the originals were presented in depth-first preorder. Therefore DeepClone.CopyUnmarshalStream.resolveObject(Object) can not enter the copies to the DeepClone.copies space. Entering the copies is therefore done in a postprocessing step, by marshaling again all objects entered into DeepClone.streamCopyIDs, and reading back their copies in the same order.

Throws:

java.io.IOException

See Also:

DeepClone.streamCopyIDs