Message Services Design Model (MSDM)

Message Service Design Model (MSDM) Message Service Design Model (MSDM) is a platform-specific model that contains definitions to enable the generation of XSD messages and commands. Messages in MSDM are derived from capability operations in BOM. Message-based XSDs and command-based XSDs generated from the MSDM can be used in a messaging environment. Request messages can be routed to a messaging engine, which can, in turn, invoke lower-level services created from BPS for Standard Tooling models. When required, a response message can be routed back to the sender. Like the other platform-specific design models, messages in MSDM do not directly reference IDM classes or interfaces. MSDM request/response message attributes can only be of type:

• Transfer object
• IDM enumeration
• DMD primitive type

XSDs are generated from MSDM using UML-to-XSD Transformation. You can control how DMD primitive types are converted to XSD types by changing <<restriction>> generalizations. DMD primitive types are classes that extend classes in the XSDDataTypes model library using <<restriction>> generalizations. To specify that a DMD primitive type should be converted to a particular XSD type at generation time, ensure that the DMD primitive type has a generalization to that XSD class in the XSDDataTypes model library and that the generalization has the <<restriction>> stereotype applied.