What does it do? This topic lists field attributes for the fields of an abstract BDEF. Commas can be used to classify multiple fields in the same way. Example: field(suppress) Field1, Field2, Field3;.
Removes a field from all derived types generated for the BDEF. In particular, the redundancy is avoided in the TYPE TABLE FOR HIERARCHY / TYPE STRUCTURE FOR HIERARCHY types.
This is possible for all fields except for key fields and fields used by the current BDEF.
Latest notes: A typical use case for field(suppress) was to exclude foreign-key fields used in the ON condition of the to-parent association to appear redundantly in the hierarchical type. This was particularly useful when it was still mandatory to define an ON condition in to-parent associations of CDS abstract entities. However, since release ABAP_785 , the ON condition can be left out. NON_V5_HINTS ABAP_HINT_END
ABAP_EXAMPLE_VX5 The following abstract BDEF suppresses one field from its derived type. BDEF DEMO_CDS_SCALAR_ROOT_3 ABAP_EXAMPLE_END
Declares a field of an abstract BDEF as mandatory. Whenever the hierarchical type is used as input parameter for a RAP action or a RAP function, a value must be supplied. Otherwise, a runtime error occurs.
As a prerequisite, the addition with hierarchy must be used in the behavior definition header and ABAP Alternative 1@1@>with control must be specified for the entity behavior definition in question. Moreover, BDEF strict mode must be enabled.
Latest notes: When using IN LOCAL MODE, mandatory:execute does not have any effect. NON_V5_HINTS ABAP_HINT_END
ABAP_EXAMPLE_VX5 The following abstract BDEF defines the field NUM1 as mandatory:execute. It fulfills the mandatory prerequisites and uses both the additions with hierarchy and with control. BDEF DEMO_ABSTRACT_ROOT This abstract BDEF is used as input parameter for the action ACTION_DEEP_PARAM in the managed BDEF DEMO_MANAGED_HIERARCHY . BDEF DEMO_MANAGED_HIERARCHY The ABAP class CL_DEMO_MANDATORY_EXECUTE executes the action ACTION_DEEP_PARAM. It supplies a value for the field NUM1 and sets the %control structure for this field to if_abap_behv=>mk-on. Code Snippet: ABEXA 01724 The following code results in a runtime error, since the %control structure for field NUM1 is set to if_abap_behv=>mk-off. Code Snippet: ABEXA 01725 ABAP_EXAMPLE_END
ABAP_EXAMPLE_ABEXA An executable example is available in topic Using TYPE TABLE /TYPE STRUCTURE FOR HIERARCHY. ABAP_EXAMPLE_END
