org.omg.CORBA
Class ObjectHolderjava.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
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 objectvoid _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