Mercurial > hg > jdk9-shenandoah > corba

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<P>Allows programmers to construct object implementations that are portable
between different ORB products.

<P>The Portable Object Adaptor (POA) is designed to meet the following goals:
<UL>
<LI>Allow programmers to construct object implementations that are portable between different ORB products.
<LI>Provide support for objects with persistent identities.
<LI>Provide support for transparent activation of objects.
<LI>Allow a single servant to support multiple object identities simultaneously.
</UL>


<P>Given an interface <code>My</code> defined in <code>My.idl</code>, the file <code>MyPOA.java</code>
is generated by the <code>idlj</code> compiler. You must provide
the implementation for <code>My</code> and it must inherit from <code>MyPOA</code>.

<P><code>MyPOA.java</code> is a stream-based skeleton that extends
<code>org.omg.PortableServer.Servant</code> and implements the <code>InvokeHandler</code>
interface and the operations interface associated with the IDL interface the skeleton implements.

<P>The <code>PortableServer</code> module for the Portable Object Adapter (POA)
defines the native <code>Servant</code> type. In the Java programming language,
the <code>Servant</code> type is mapped to the Java <code>org.omg.PortableServer.Servant</code> class.
It serves as the base class for all POA servant implementations
and provides a number of methods that may be invoked by the application programmer,
as well as methods which are invoked by the POA itself
and may be overridden by the user to control aspects of servant behavior.


<P>All Mapping corresponds to the Chapter 11 of
 CORBA V2.3.1 specified by OMG document formal/99-10-07.pdf.
 The exception to this is the <code>id</code> attribute, which is added in ptc/00-08-06,
 section 11.3.8.26.

<H3>Package Specification</H3>

<P>For a precise list of supported sections of official specifications with which
the Java[tm] Platform, Standard Edition 6, ORB complies, see <A
HREF="../../CORBA/doc-files/compliance.html">Official Specifications for CORBA
support in Java[tm] SE 6</A>.

@since 1.4
<br>
@serial exclude
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author	avstepan
date	Sun, 13 Sep 2015 23:31:47 +0300
parents	753f4114e6d6
children