Get Example source ABAP code based on a different SAP table
ABAP_RAP - RAP BO Extension Using Interface This example demonstrates a RAP BO extension via a RAP BO interface.
Base RAP BO Data model The CDS data model consists of four nodes which form a hierarchical CDS composition tree. They are connected via CDS compositions. Root entity: DDLS DEMO_RAP_EXTENSIBLE_ROOT Child entity: DDLS DEMO_RAP_EXTENSIBLE_CHILD Grandchild entity: DDLS DEMO_RAP_EXTENSIBLE_GRCHLD Great-grandchild entity: DDLS DEMO_RAP_EXTENSIBLE_GGCHLD Behavior definition The RAP behavior definition DEMO_RAP_EXTENSIBLE_ROOT is defined in RAP BDL as shown below. It defines a managed, draft-enabled RAP BO with multiple extension points. BDEF DEMO_RAP_EXTENSIBLE_ROOT Behavior implementation For the RAP behavior definition, one ABAP behavior pool (ABP) is created. The global class of the behavior pool is BP_DEMO_RAP_EXTENSIBLE_ROOT, see BP_DEMO_RAP_EXTENSIBLE_ROOT===CCIMP. It implements the method get_instance_authorizations for instance authorization control. It returns information on whether update and delete operations are allowed on instances. In this example, these operations are not allowed if CharField has a particular value. ABAP_NOTE This is a simple example that serves demonstration purposes.
RAP BO Interface CDS data model projection Root node projection: DDLS DEMO_RAP_EXT_USING_INTERFACE Child node projection: DDLS DEMO_RAP_EXT_USING_INT_CHILD Projection of grandchild node: DDLS DEMO_RAP_EXT_USING_INT_GRCHLD Projection of great-grandchild node: DDLS DEMO_RAP_EXT_USING_INT_GGCHLD RAP interface behavior definition The following interface BDEF projects the base RAP BO. BDEF DEMO_RAP_EXT_USING_INTERFACE
BDEF Extension The BDEF extension DEMO_RAP_EXT_USING_INTERF extends the RAP BO via its interface. It addresses the root node by its interface name, RootInterface. It adds one extension action to the RAP BO. BDEF DEMO_RAP_EXT_USING_INTERF Extension ABP The extension action setValue_ext is implemented in the extension ABP, see BP_DEMO_RAP_EXT_USING_INTERF==CCIMP. When executed, it changes the value of field CharInt.
ABAP_DESCRIPTION Access with ABAP using EML The above source code uses AB_SQL and ABAP EML to access the RAP BO interface from an ABAP class and performs the following steps:
It creates two instances of the root entity.
It executes the action setValue_ext for one of the instances.
The content of the database table after the create operation and after the action is displayed.
