CORBA is a middeware design that allows application programs to communicate with one another irrespective of their programming languages, their hardware and software platforms, the networks they communicate over and their implementors.
Applications are built from CORBA objects, which implement interfaces defined in CORBA’s interface definition language, IDL.
Clients access the methods in the IDL interfaces of CORBA objects by means of RMI.
The middleware component that supports RMI is called the Object Request Broker or ORB.
The specification of CORBA has been sponsored by members of the Object Management Group (OMG).
Many different ORBs have been implemented from the specification, supporting a variety of programming languages including Java and C++.
CORBA services provide generic facilities that may be of use in a wide variety of applications.
They include the Naming Service, the Event and Notification Services, the Security Service, the Transaction and Concurrency Services and the Trading Service.
module Whiteboard {
struct Rectangle{
...} ;
struct GraphicalObject {
...};
interface Shape {
...};
typedef sequence <Shape, 100> All;
interface ShapeList {
...};
};