Package org.omg.CORBA

Class ObjectHolder

java.lang.Object
org.omg.CORBA.ObjectHolder
All Implemented Interfaces:
Streamable
public final class ObjectHolder extends Object implements Streamable
The Holder for Object. For more information on Holder files, see "Generated Files: Holder Files".

A Holder class for a CORBA object reference (a value of type org.omg.CORBA.Object). It is usually used to store "out" and "inout" parameters in IDL methods. If an IDL method signature has a CORBA Object reference as an "out" or "inout" parameter, the programmer must pass an instance of ObjectHolder as the corresponding parameter in the method invocation; for "inout" parameters, the programmer must also fill the "in" value to be sent to the server. Before the method invocation returns, the ORB will fill in the value corresponding to the "out" value returned from the server.

If myObjectHolder is an instance of ObjectHolder, the value stored in its value field can be accessed with myObjectHolder.value.

Since:
JDK1.2

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    Object
    value
    The Object value held by this ObjectHolder object.

  • Constructor Summary

    Constructors
    Constructor
    Description
    ObjectHolder()
    Constructs a new ObjectHolder object with its value field initialized to null.
    ObjectHolder(Object initial)
    Constructs a new ObjectHolder object with its value field initialized to the given Object.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    _read(InputStream input)
    Reads from input and initalizes the value in this ObjectHolder object with the unmarshalled data.
    TypeCode
    _type()
    Returns the TypeCode corresponding to the value held in this ObjectHolder object
    void
    _write(OutputStream output)
    Marshals to output the value in this ObjectHolder object.

    Methods inherited from class java.lang.Object

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

  • Field Details

    • value

      public Object value
      The Object value held by this ObjectHolder object.

  • Constructor Details

    • ObjectHolder

      public ObjectHolder()
      Constructs a new ObjectHolder object with its value field initialized to null.

    • ObjectHolder

      public ObjectHolder(Object initial)
      Constructs a new ObjectHolder object with its value field initialized to the given Object.
      Parameters:
      initial - the Object with which to initialize the value field of the newly-created ObjectHolder object

  • Method Details

    • _read

      public void _read(InputStream input)
      Reads from input and initalizes the value in this ObjectHolder object with the unmarshalled data.
      Specified by:
      _read in interface Streamable
      Parameters:
      input - the InputStream containing CDR formatted data from the wire.

    • _write

      public void _write(OutputStream output)
      Marshals to output the value in this ObjectHolder object.
      Specified by:
      _write in interface Streamable
      Parameters:
      output - the OutputStream which will contain the CDR formatted data.

    • _type

      public TypeCode _type()
      Returns the TypeCode corresponding to the value held in this ObjectHolder object
      Specified by:
      _type in interface Streamable
      Returns:
      the TypeCode of the value held in this ObjectHolder object