ValueBaseHolder (Java 2 Platform SE v1.4.1) - JDK 5 Documentation v1.4.1, Java 2 SDK 英文文档

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Java^TM 2 Platform
Std. Ed. v1.4.1

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org.omg.CORBA
Class ValueBaseHolder

java.lang.Object
  |
  +--org.omg.CORBA.ValueBaseHolder

All Implemented Interfaces:: Streamable

public final class ValueBaseHolder
extends Object
implements Streamable

The Holder for ValueBase. For more information on Holder files, see "Generated Files: Holder Files".

A Holder class for a java.io.Serializable that is used to store "out" and "inout" parameters in IDL methods. If an IDL method signature has an IDL ValueBase as an "out" or "inout" parameter, the programmer must pass an instance of ValueBaseHolder 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 myValueBaseHolder is an instance of ValueBaseHolder, the value stored in its value field can be accessed with myValueBaseHolder.value.

Field Summary

Serializable value
          The java.io.Serializable value held by this ValueBaseHolder object.

Constructor Summary

ValueBaseHolder()
          Constructs a new ValueBaseHolder object with its value field initialized to 0.

ValueBaseHolder(Serializable initial)
          Constructs a new ValueBaseHolder object with its value field initialized to the given java.io.Serializable.

Method Summary

void _read(InputStream input)
          Reads from input and initalizes the value in the Holder with the unmarshalled data.

TypeCode _type()
          Returns the TypeCode object corresponding to the value held in the Holder.

void _write(OutputStream output)
          Marshals to output the value in the Holder.

Methods inherited from class java.lang.Object

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

Field Detail

value

public Serializable value

The java.io.Serializable value held by this ValueBaseHolder object.

Constructor Detail