Datasource Tab Page
A view used to specify operation mapping.
You use the Datasource tab page to specify the data source for business objects using external service operations and for operation mapping. You can map input and output attributes and view mapped parameters.
The Datasource tab page lists the business object and external service operations and parameters used in the services modeler. The tab page contains a tabular view listing business objects and external operations and a graphical view for mapping operations.
Target Operations
Business object or application service operations used in the service modeling tool of CAF are listed in Target Operations. To map an operation to an external one, select it from the table.
Source Operations
External operations selected for use in a business object operation are listed in Source Operations. To map the an external operation to an application service operation from the Target Operations list, select an operation name in the Source Operations table. Parameters are listed in the Input and Output nodes.
Attributes Mapping
After you map the two operations, you should map their attributes. To do that, use drag and drop. Arrows between the two trees appear. They represent the messages of the operations. There are certain restrictions for the attribute mappings. For example, you cannot map an input parameter to an output one or a collection parameter to a single one.
Default Mapping
You can define a default value for a target operation parameter in the Fixed value column. This default value is applied if no value is available for the parameter after the execution of the parameter mappings. The mandatory parameters always have a default value - you can change it but not disable it. For the optional parameters you use the checkbox in the Is null column to disable the default value.