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ABENBDL_DEFINE_BEHAVIOR - BDL DEFINE BEHAVIOR

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- DEFINE BEHAVIOR

* Work in progress *

define behavior for CDSEntityName $[alias AliasName$]
  $[implementation in class ClassName unique$]
  $[late numbering $[in place$]$]
  $[etag field$|AncestorEntity~Field ( LocalField = MasterField )$]
  $[lock master$|dependent ( LocalField = MasterField )$]
  {
    $[field(read only $| mandatory) field1$[, field2, ...$];$]
    $[internal$] create;
    $[internal$] update;
    $[internal$] delete;
    $[internal$] $[static$] action ActionName
        $[external LongName$]
        $[parameter InputParameterEntity$|$self$]
        $[result cardinality OutputParameterEntity$|$self$];
    $[internal$] association AssociationName
        $[abbreviation AbbreviationName$] {$[$[internal$]create;$]};
  }

Effect

Similarly to CDS entities, the behavior for an entity can be divided into a part for once-only specifications (implementation, late numbering, etag, and lock), followed by a part of multiple specifications (field, standard operations, actions, and associations) enclosed in {...}.

In the following example, the data from the ABAP flight data reference scenario (or flight data scenario for short) is used. It represents a legacy business logic that can be used to create and process flight bookings. The CDS view /DMO/I_Travel represents the root node of the business object for managing flight trips. The underlying business model is described in CDS BDL - Example.

The following example shows the behavior definition for the root entity Travel.

implementation unmanaged;
define behavior for /DMO/I_Travel alias Travel
late numbering
lock master
etag LastChangedAt
{
  field (read only) Travel_ID;
  field (mandatory) Agency_ID, Customer_ID, Begin_Date, End_Date;
  create;
  update;
  delete;
  action set_status_booked result [1] $self;
  association _Booking { create; }
}

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Length: 3428 Date: 20240423 Time: 081049     sap01-206 ( 32 ms )