Incomplete type inference in quick fix?

[Former Member]

Hi all,

I'm implementing the examples from the REST How-To and have come across the following behaviour: I've created the basic classes and want to add the method REGISTER_RESOURCES as described in section 2.3.2. Now I have the following code:

  METHOD register_resources.

    registry->register_discoverable_resource(
      EXPORTING
        url             = '/restflights/01/carriers'
        handler_class   = 'CL_SFLIGHT_ADT_RES_CARRIERS'
        description     = 'Carriers'
        category_scheme = 'http://www.mycompany,com/adt/categories/examples/flights'
        category_term   = 'carriers' ).

    collection = registry->register_discoverable_resource(
        url             = '/restflights/01/flights'
*        accepted_types  =
*        handler_class   =
*        parameter       =
        description     = 'Flights'
        category_scheme = 'http://www.mycompany,com/adt/categories/examples/flights'
        category_term   = 'flights'
    ).

  ENDMETHOD.

Naturally, the editor will complain about collection not being defined. If I use the quick fix to declare a local variable, I get

DATA: collection TYPE any.

which is not quite what I expected - I think this should be a TYPE REF TO IF_ADT_DISCOVERY_COLLECTION since this is what the method returns. The backend is SAP_BASIS/ABA 7.31 SP 13. Is this a known issue?

Thanks

  Volker

[Former Member]

Hi all,

I'm implementing the examples from the REST How-To and have come across the following behaviour: I've created the basic classes and want to add the method REGISTER_RESOURCES as described in section 2.3.2. Now I have the following code:

  METHOD register_resources.

    registry->register_discoverable_resource(
      EXPORTING
        url             = '/restflights/01/carriers'
        handler_class   = 'CL_SFLIGHT_ADT_RES_CARRIERS'
        description     = 'Carriers'
        category_scheme = 'http://www.mycompany,com/adt/categories/examples/flights'
        category_term   = 'carriers' ).

    collection = registry->register_discoverable_resource(
        url             = '/restflights/01/flights'
*        accepted_types  =
*        handler_class   =
*        parameter       =
        description     = 'Flights'
        category_scheme = 'http://www.mycompany,com/adt/categories/examples/flights'
        category_term   = 'flights'
    ).

  ENDMETHOD.

Naturally, the editor will complain about collection not being defined. If I use the quick fix to declare a local variable, I get

DATA: collection TYPE any.

which is not quite what I expected - I think this should be a TYPE REF TO IF_ADT_DISCOVERY_COLLECTION since this is what the method returns. The backend is SAP_BASIS/ABA 7.31 SP 13. Is this a known issue?

Thanks

  Volker

[sebastian_wolf]

Hi Volker,

yes, this behavior is known - especially in SAP_BASIS 7.31. In this release we can't infer the type to that extent as we currently do it in SAP_BASIS 7.4. In the higher releases we are much better - nevertheless there are still some cases when we need to propose TYPE ANY instead of the complete (correct) type.

We plan to improve this in the future, but unfortunately I can't give you any date.

Thanks for your understanding and best regards, Sebastian