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Java Remote Method Invocation ("Java RMI") technology run over
Internet Inter-Orb Protocol ("RMI-IIOP")
delivers Common Object Request Broker Architecture (CORBA) distributed
computing capabilities to the Java 2 platform. Java RMI over
IIOP was developed by Sun and IBM. The joint work by Sun and
IBM to implement Object Management Group (OMG) standards
demonstrates the spirit of collaboration that continually moves
the Java platform forward.
Java RMI over IIOP combines the best features of Java RMI
technology
with the best features of CORBA technology. Like Java RMI, RMI over
IIOP speeds
distributed application development by allowing developers to
work completely in the Java programming language. When using RMI over
IIOP to produce Java technology-based distributed applications, there
is no separate Interface Definition Language (IDL) or mapping to learn.
Like RMI, RMI over IIOP provides flexibility by allowing developers
to pass any serializable Java object (Objects By Value) between
application components. Like CORBA, RMI over IIOP is based on
open standards defined with the participation of hundreds of
vendors and users in the Object Management Group. Like CORBA,
RMI over IIOP uses IIOP as its communication protocol.
IIOP eases legacy application and platform integration by allowing
application components written in C++, Smalltalk, and other CORBA
supported languages to communicate with components running on the
Java platform.
RMI over IIOP is based on two specifications of the Object
Management Group:
With RMI over IIOP, developers can write remote interfaces in the Java
programming language and implement them just using Java technology and
the Java RMI APIs. These interfaces can be implemented in any other
language that is supported by an OMG mapping and a vendor supplied ORB
for that language. Similarly, clients can be written in other languages
using IDL derived from the remote Java technology-based interfaces.
Using RMI over IIOP, objects can be passed both by reference and by
value over IIOP.
RMI over IIOP is available with the download of the Java 2 platform,
Standard Edition, version 1.3 and 1.4. The RMI over IIOP IDL Compiler, rmic,
can be found in the bin directory of the J2SDK installation.
Use the RMI over IIOP Compiler with the -iiop option to
generate stubs, skeletons, and ties for remote objects using the IIOP
protocols. The rmic compiler can also be used to generate OMG
IDL for CORBA development on the Java platform. For more information on
the rmic
compiler, follow the link.
For comments please send us email at rmi-iiop@sun.com.
A user supported forum for RMI over IIOP technology is available at
http://forum.java.sun.com.
The RMI over IIOP optional download, v1.0.1,
is not recommended and is no longer supported, but is archived at:
http://java.sun.com/products/archive/rmi-iiop/1.0.1/index.html.
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