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Java 2 Platform SE v1.3.1: Class ObjectHolder
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JavaTM 2 Platform
Std. Ed. v1.3.1
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org.omg.CORBA
Class ObjectHolder

java.lang.Object
  |
  +--org.omg.CORBA.ObjectHolder
All Implemented Interfaces:
Streamable
public final class ObjectHolder
extends Object
implements Streamable

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
 Object value
          The Object value held by this ObjectHolder object.
 
Constructor Summary
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
 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 Detail

value

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

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 Detail

_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
Overview  Package   Class  Use  Tree  Deprecated  Index  Help 
JavaTM 2 Platform
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Submit a bug or feature
For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.

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