Summary
The CORBA specification makes components available on two levels of functionality. This chapter focuses on the basic level, because of its compatibility with the EJB standard.
It is shown how the concept of a CORBA object is replaced by the equivalent concept of a component managed by a component home and embedded in a container. A new dialect of IDL, extended IDL, is defined that includes grammatical constructions for components, introduced by the component and home keywords.
There are four fundamental categories of component: session, service, entity, and process. The choice of component category has considerable influence on the component’s implementation and life-cycle properties. For example, session and service components are transient, ...
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