What does it do? Defines managed internal numbering for a RAP BO field. The field in question is automatically assigned values upon creation of a new entity instance. The RAP BO consumer does not have to provide any input for those fields.
Can be applied only to primary key fields with ABAP type raw(16) (UUID).
Managed internal numbering is only available in managed RAP BOs.
It is managed by the RAP framework, no implementation in the ABAP behavior pool is required.
The field in question can also be defined as readonly to ensure that no values are passed from the RAP BO consumer. However, this is optional. If you do not set the key field to readonly, the key value can also be given by the consumer.
Latest notes: For user-defined numbering, the keyword early numbering is available, see topic RAP BDL - early numbering . NON_V5_HINTS ABAP_HINT_END
ABAP_FURTHER_INFO Development guide for the ABAP RESTful Application Programming Model, section Automatically Drawing Primary Key Values in Managed BOs.
ABAP_EXAMPLE_VX5 The following example shows a managed BDEF that defines internal numbering for the key field key_field. ABAP_NOTE This example is intentionally kept short and simple and serves demonstration purposes only. It does not fully meet the requirements of the RAP BO contract. See more information on the RAP BO contract in the Development guide for the ABAP RESTful Application Programming Model. BDEF DEMO_RAP_FIELD_CHARACTERISTICS The ABAP class CL_DEMO_RAP_MANAGED_FIELDS uses EML to access to RAP business object and performs the following steps:
It creates three entity instances by specifying a value for the field char_field1.
It commits the three new entity instances to the database.
Using the AB_SQL SELECT statement, it displays the content of the underlying database table. It can be seen that the primary key field KEY_FIELD of each entity instance contains a value, which was generated by means of managed early numbering. Code Snippet: ABEXA 01530 Result: values for the primary key field are generated automatically. IMAGE ABDOC_INTERNAL_NUMB.png 358 106 ABAP_EXAMPLE_END
