Stack-ability of Composite Providers

Composite Providers do have a settings that enables them to be reused in other the Composite Providers. In other words, the settings is describing reusability or stack-ability of the Composite Providers. The settings in available in SAP HANA Studio - BW Modelling tools in Composite Provider maintenance screen under General tab. Composite View is re-usable as PartProvider of other Composite Views.

Technically the settings is implemented in table RSOHCPR, and its field STACKABLE. In case the flag is set, the Composite Providers is type of stacked Composite Provider (STACKABLE = X). The setting is handled in methods like IS_STACKABLE, CHECK_STACKABLE and SET_STACKABLE of ABAP class CL_HCPR_COMPOSITE_PROVIDER.

More information:

Using a CompositeProvider as a Provider in Other CompositeProviders

Scenarios for Using CompositeProviders in CompositeProviders

2271658 - Design Considerations for Composite Provider

Working with navigational attributes in Composite Providers

While working with Composite Providers (HCPR) a navigation attributes of InfoObjects that are present in objects contained in the HCPR are not shown by default. Below picture illustrates how it looks like when the navigation attributes are not shown.

In BW Modelling Tools  of SAP HANA Studio there is an option how to enable it. In the HCPR maintenance screen under a right click there is an option called “Show Unassigned Navigation Attributes”.

Once the above option is activated then the navigation attributes are present and can be freely assigned. Here’s how does it look like when the navigation attributes are available.