Architecture Support for Flexible Business Chain Integration Using Protocol Adaptors

BPEL with references to WSDL definitions BPEL WSDL Definitions Executable BPEL Automatic Transformation Legend: Manual Refinement Minimal Adaptor Fig. 7. Adding Adaptation to the BPELgold Model Chain Since adaptation of the interacting services is not addressed in the original model chain for BPELgold, we have extended the tool chain by adding minimal adaptors (gray box) which can be automatically generated by analyzing abstract BPEL protocols. We have developed a tool, explained in the next subsection, that automatically generates a BPEL adaptor to resolve incompatibilities between the interacting services. However, any other adaptation tool that generates BPEL adaptors can be used instead in the embodiment of our architecture. The adaptor is encoded as an abstract BPEL model, which represents an orchestration model. Then, the adaptor must be added as a new participant to the choreography. The adaptor is added to the interaction model to specify how the messages are communicated with each other. The model flow in Fig. 7 is top-down and describes the implementation of the interaction model and executable processes at design-time.