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ABENBDL_DEFINE_BEH_PROJECTION - BDL DEFINE BEH PROJECTION

ABENBDL_DEFINE_BEH_PROJECTION - BDL DEFINE BEH PROJECTION

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- Entity Behavior Definition, Projection BDEF

define behavior for ProjectedEntity $[alias AliasName$] $[external ExternalName$]
${$[implementation in class ClassName $[unique$]$]$}
entity behavior characteristics
{
  entity behavior body
}

$[behavior for ChildEntity1$]$[, behavior for ChildEntity2$]$[, ...
$]

Effect

Defines the behavior for a RAP projection business object in the CDS BDL. A CDS projection behavior definition can project a subset or all of the nodes of its underlying base BO. The root entity ProjectedEntity must be a CDS projection view.

Syntax additions and components:

  • An alias name can be specified using the keyword alias. This name can be clearer than the entity name itself, since it does not need to be uniquely global in ABAP Dictionary. The alias name is visible in the method syntax of the ABAP behavior pool of the business object and in the derived types. The length of an alias name AliasName is restricted to 30 characters.
  • The optional addition external can be used to provide an alias name for external usage. This external name is exposed in the OData metadata, but it is not known by ABAP. It can be much longer than the alias name.
  • An ABAP behavior pool, referred to using implementation in class ClassName unique, can be specified for each entity that defines new actions or functions and thus requires an implementation. It can be specified either in the BDEF projection header or as part of the projection behavior definition.

Example

The following example shows a projection BDEF. The projected BO is DEMO_SALES_CDS_BUPA_2. It exposes the standard operations and associations of the underlying BO.






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