International Business Machines Corporation

Felix Feger

Jochen M Kuester

Jana Koehler

Hagen Voelzer

Christian Gerth

Jussi H Vanhatalo

Christian Facciorusso

Methods and apparatus are provided for production of a difference log in a data processing system. The difference log defines differences between process models defined in system memory. For each of the process models, model structure data provided in memory defines a hierarchy of SESE regions representing the structure of that model. Also provided in memory are model comparison data defining correspondences between elements of the models, and region comparison data defining correspondences between regions of the SESE region hierarchies for the models. The model comparison and region comparison data are analyzed to identify differences between the SESE region hierarchies, and a difference log defining said differences is produced. In preferred systems, the model structure data and the region comparison data are computed for the models, and the difference log has a hierarchical structure corresponding to the structure of the process models.

Difference log production for model merging

Methods and systems are provided for automatic identification of an insertion point. Comparison defining the correspondence between elements of models is done. The sequence order of elements in the second model is analyzed to identify predecessor and successor elements of the element t. The comparison is used to identify a set of transferred predecessors (P), comprising elements of the first model which correspond to predecessor elements (P) in the second model, and a set of transferred successors (S) comprising elements of the first model which correspond to successor elements (S) in the second model. Then, positions of the elements x, y in the sequence order of the first model are compared with the positions of elements in the sets of transferred predecessors and successors (P, S). An edge between the elements x and y is identified as an insertion point.

Automatic insertion point identification in model merging operations

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Düsseldorf, Germany

Felix Feger