The respective determine action must allow extensions as described in topic RAP BDL - Extensibility Enabling for Managed and Unmanaged BDEFs.
The extended BDEF must be draft-enabled . Determine actions can currently only be extended in draft-enabled RAP BOs. ABAP_PREREQ_END
What does it do? Extends an existing determine action DetermineActionName with extension determinations and extension validations. At least one extension determination or extension validation must be specified within curly brackets. If the optional addition always is used, then all determinations and validations that are part of the determine action are executed regardless of their trigger conditions. After a determination with the flag always has been executed, it can be triggered again by other determinations belonging to the same determine action. Determinations and validations of child entities can be included using the syntax child~childDetermination or child~childValidation , as long as these validations and determinations do not include the trigger operation delete. Execution order: Determinations are executed first, validations afterwards. The execution order among determinations or validations themselves is defined by the RAP framework and is independent of the specified order within the determine action. RAP authorization control from the extended BDEF is reused, if specified.
Latest notes: Internal determine actions cannot be extended. NON_V5_HINTS ABAP_HINT_END
Related Information
RAP BDL - determine action.
ABAP_EXAMPLE_VX5 The following source code shows BDEF extension DEMO_RAP_DET_ACT_EXT. It extends BDEF DEMO_RAP_EXTENSIBILITY_DET_ACT by adding one further determination setStatustoNew to the determine action trigger_all. The original BDEF explicitly allows extensions to the determine action trigger_all: BDEF DEMO_RAP_EXTENSIBILITY_DET_ACT The extension adds one further determination setStatustoNew to the determine action trigger_all: BDEF DEMO_RAP_DET_ACT_EXT The ABAP class CL_DEMO_CDS_EXT_DET_ACT uses EML to access to RAP business object. It executes the determine action trigger_all. The RAP framework executes the implementations in the original and extension ABAP behavior pools in the following order:
get_instance_authorizations: check whether the operation on the root node is authorized.
setID, a determination from the root node of the original BDEF.
setStatustoNew, a determination from the root node extension.
get_instance_authorizations: check whether the operation on the child node is authorized.
TotalPrice, a determination from the child node of the original BDEF. ABAP_EXAMPLE_END
ABAP_EXAMPLE_ABEXA The example above is explained in detail in the executable example RAP BDL - extend determine action. ABAP_EXAMPLE_END
