Basic HTML version of Foils prepared May 19 1999

Foil 70 Servant and Servant Base Classes

From CORBA Common Object Request Broker Architecture Basic Information Track Computational Science Course CPS616 -- Spring Semester 1999. by Geoffrey Fox, Wojtek Furmanski, Nancy McCracken, Chao-Wei Ou, Shrideep Pallickara


1 To implement a server for transient CORBA objects of some type, you write a Java class called a servant, which inherits from a class called the servant base; servant base classes are optionally generated by the idltojava compiler.
2 An instance of a transient CORBA object is implemented by an instance of its servant class.
3 The servant base class is the CORBA type-specific interface between the ORB and the servant code for the type. It unmarshals incoming parameters, invokes servant methods, marshals results, and directs the ORB to return results to the client ORB.
4 A servant class extends its servant base with a method for each operation in the IDL interface definition it implements.

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