Standard Evaluation
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The standard table summarizes the results of the comparison of various standards. For a overview of the patterns we refer to the patterns descriptions. For an evaluation of the workflow management systems such as COSA, FLOWer, Domino Workflow, Eastman, Visual Workflow, Forte Conductor, Meteor, Mobile, MQSeries/Workflow, Staffware, Verve Workflow, I-Flow, InConcert, Changengine, and SAP R/3 Workflow in terms of the selected patterns we refer to the products evaluation.

For each standard-pattern combination, we checked whether it is possible to realize the workflow pattern with the language. If a standard directly supports the pattern through one of its constructs, it is rated +. If the pattern is not directly supported, it is rated +/-. Any solution which results in spaghetti diagrams or coding, is considered as giving no direct support and is rated -. Note that a pattern is only supported directly if there is a feature provided by the language  which supports the construct without resorting to any of solutions mentioned in the implementation part of the pattern.

Standard Table

pattern
standard
  XPDL UML
BPEL
XLANG
WSFL
BPML
WSCI
Sequence + + + + + + +
Parallel Split + + + + + + +
Synchronization + + + + + + +
Exclusive Choice + + + + + + +
Simple Merge + + + + + + +
Multi Choice + - + - + - -
Synchronizing Merge + - + - + - -
Multi Merge - - - - - +/- +/-
Discriminator - - - - - - -
Arbitrary Cycles + - - - - - -
Implicit Termination + - + - + + +
MI without Synchronization + - + + + + +
MI with a Priori Design Time Knowledge + + + + + + +
MI with a Priori Runtime Knowledge - + - - - - -
MI without a Priori Runtime Knowledge - - - - - - -
Deferred Choice - + + + - + +
Interleaved Parallel Routing - - +/- - - - -
Milestone - - - - - - -
Cancel Activity - + + + + + +
Cancel Case - + + + + + +

Standard Table
XPDL
UML
BPEL4WS
BPML
Report
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For problems or questions regarding this web contact Wil van der Aalst.
Last updated: donderdag februari 22, 2007.