CurrentHelper (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.PortableServer
Class CurrentHelper

java.lang.Object
  |
  +--org.omg.PortableServer.CurrentHelper

public abstract class CurrentHelper
extends Object

The PortableServer::Current interface, derived from CORBA::Current, provides method implementations with access to the identity of the object on which the method was invoked. The Current interface is provided to support servants that implement multiple objects, but can be used within the context of POA-dispatched method invocations on any servant. To provide location transparency, ORBs are required to support use of Current in the context of both locally and remotely invoked operations. An instance of Current can be obtained by the application by issuing the CORBA::ORB::resolve_initial_references("POACurrent") operation. Thereafter, it can be used within the context of a method dispatched by the POA to obtain the POA and ObjectId that identify the object on which that operation was invoked.

Constructor Summary

CurrentHelper()


Method Summary

static Current extract(Any a)


static String id()


static void insert(Any a, Current that)


static Current narrow(Object obj)


static Current read(InputStream istream)


static TypeCode type()


static void write(OutputStream ostream, Current value)


Methods inherited from class java.lang.Object

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

Constructor Detail

CurrentHelper

public CurrentHelper()

Method Detail

insert

public static void insert(Any a,
                          Current that)

extract

public static Current extract(Any a)

type

public static TypeCode type()

id

public static String id()

read

public static Current read(InputStream istream)

write

public static void write(OutputStream ostream,
                         Current value)

narrow

public static Current narrow(Object obj)