Processing of Lists

An operation is said to use IBM Cúram Social Program Management lists if its return value or any of its parameters utilize a struct which aggregates another struct using 'multiple' cardinality.

In the UML metamodel, it is possible to model an operation which uses parameters containing lists. All operations which are visible as a web service are normally also visible to the web client.

However the web client does not support the following:

• List parameters;
• Non-struct parameters (i.e. parameters which are domain definitions);
• Non-struct operation return types.

In these cases, the web client ignores the operations which it does not support, but these operations can be used as normal as an inbound web service.

When using lists with a document-oriented inbound web service SOAP messages corresponding to the list structs do not match the WSDL corresponding to these types. This will manifest itself as a runtime error when SOAP messages are being serialized or de-serialized. The recommended workaround is to either:

• Use RPC instead of DOWS web services; or,
• Ensure that your DOWS methods do not use list structs as their parameter or return types.