Abstract: A computer system and method including commands to permit interaction between a client and a component in a backend system. The command has an input object, for transformation by the backend system, and defines one or more output objects, representing the input object after transformation by the backend system. The command includes a connection specification, for identification of the backend system with which the client is to interact, and an interaction specification, for identification of the component in the backend system with which the client is to interact. The command also includes a communication object, for carrying out a connection between the client and the component of the backend system. The input object is supplied to the component of the backend system in accordance with the interaction specification and the connection specification.

Abstract: The invention proposes a method of defining and generating cooperating object structures for accessing Business Applications (BAs) which were not built upon the principles of object orientation (OO) in an OO manner. One step of the method is targeted at the definition of true Business Object (BO) classes with a unique meaning as entities or concepts in terms of the underlying business as supported by the BA. As the BAs process the business relevant data, their spectrum of the input and output parameters serve to define the BO Attributes (BOAs) of the individual BO classes. A further step of the method is the encapsulation of the individual BAs within Transactional Object (TO) classes for controlling and executing the BAs. TO instances are able to autonomously extract BOA values from the BO instances to assemble the input parameters for BA execution. The TO instances are also endowed to process the output parameters as returned by the BA to materialize BOs, i.e.