Method for providing a service implementation for both EJB and non-EJB environments

In a server computer of an object-oriented computing system, a system for providing a service implementation for both enterprise and non-enterprise environments, the system comprising:

• a service implementation class for a service, said implementation class defining a method that implements said service, wherein the service is independent of the enterprise environment;
• an outer-layer service interface class for said service implementation class, wherein the outer-layer service interface class is independent of the enterprise environment;
• an inner-layer service interface class that extends both the outer-layer service interface class and an enterprise base interface that is predefined;
• an enterprise layer having an enterprise home interface class;
• and
• a factory layer having a non enterprise factory interface to a client computer and having an abstract factory class that, as selected by late binding of said client computer at runtime, either instantiates an enterprise factory for said service via said home interface class or alternatively instantiates an non enterprise factory for said service.

A computer program product for use in a server computer of an object-oriented computing system, said computer program product defining a system for providing a service implementation for both enterprise and non-enterprise environments, said computer program product comprising a signal-bearing medium carrying thereon:

• service implementation class for a service, said implementation class defining a method that implements said service, wherein the service is independent of the enterprise environment;
• an outer-layer service interface class for said service implementation class, wherein the outer-layer service interface class is independent of the enterprise environment;
• an inner-layer service interface class that extends both the outer-layer service interface class and an enterprise base interface that is predefine;
• an enterprise layer having an enterprise home interface class;
• and
• a factory layer having a non enterprise factory interface to a client computer and having an abstract factory class that, as selected by late binding of said client computer at runtime, either instantiates an enterprise factory for said service via said home interface class or alternatively instantiates a non-enterprise factory for said service.