CORBA programming model

The CORBA programming model describes the artifacts that you develop and implement to enable client applications to interact with server applications in a CORBA environment. In this context, the word client refers to any program that makes a remote method request on a servant object. The server, a server process, hosts a servant object (in CORBA terminology) through which the client accesses business functions. On a CORBA C++ server, the servant object implements the business functions. On an EJB server, the business logic is implemented by an enterprise bean.

The CORBA programming model, as a distributed-object programming model, is characterized as follows:

Objects
CORBA objects are defined with the OMG Interface Definition Language (IDL). IDL is compiled to generate client stubs and server skeletons, which map an object's services from the server environment to the client.
Communications protocol
The specification is the General Inter-ORB Protocol (GIOP). The Internet Inter-ORB Protocol (IIOP) is one implementation of this specification. Together, these protocols specify the message formats and data representations used between CORBA clients and servers.
Object references
CORBA Interoperable Object References (IOR) provide a platform and vendor-independent object reference.
Naming service
The CORBA CosNaming service is located (bootstrapped) with resolve_initial_references(). CosNaming binds a CORBA object to a public name.

The following image shows the artifacts that you develop and implement for the CORBA programming model:

CORBA programming model
CORBA programming model

The CORBA programming model comprises the following two interrelated parts:

In WebSphere Application Server, the CORBA client, and server programming models are used as follows:


Related concepts
CORBA concepts
CORBA C++ client programming model
CORBA server programming model
CORBA object services
CORBA communication protocols (GIOP/IIOP)
CORBA valuetype considerations
Related tasks
Implementing CORBA applications
Related reference
CORBA internationalization considerations



Searchable topic ID:   ccor_ipgm00
Last updated: Jun 21, 2007 8:07:48 PM CDT    WebSphere Business Integration Server Foundation, Version 5.0.2
http://publib.boulder.ibm.com/infocenter/wasinfo/index.jsp?topic=/com.ibm.wasee.doc/info/ee/corba/concepts/ccor_ipgm00.html

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