The New-born: CDS View Entity
With ABAP release 7.55, a new type of CDS view is available: in official terminology, it’s called CDS view entity. And it has come to replace the “classic” CDS DDIC-based views that have been around for years.
| CDS DDIC-based view | CDS view entity |
| @AbapCatalog.sqlViewName: ‘ZCDSVSCARR’ @AbapCatalog.compiler.compareFilter: true @ClientHandling.algorithm: #SESSION_VARIABLE @AbapCatalog.preserveKey: true @AccessControl.authorizationCheck: #NOT_ALLOWED define view zcds_scarr_spfli as select from spfli join scarr on scarr.carrid = spfli.carrid { key spfli.carrid as id, key scarr.carrname as carrier, key spfli.connid as flight, spfli.cityfrom as departure, spfli.cityto as destination } | . . . . @AccessControl.authorizationCheck: #NOT_REQUIRED define view entity zcds_scarr_spfli_e as select from spfli join scarr on scarr.carrid = spfli.carrid { key spfli.carrid as id, key scarr.carrname as carrier, key spfli.connid as flight, spfli.cityfrom as departure, spfli.cityto as destination } |
Differences:
- The view entity doesn’t require the annotation @AbapCatalog.sqlViewName.
- The view entity doesn’t require the annotation @AbapCatalog.compiler.compareFilter: true because the filter is implicitly and automatically compared.
- The view entity doesn’t require the annotation @ClientHandling.algorithm since client handling takes place implicitly.
- The view entity doesn’t require the annotation @AbapCatalog.preserveKey: true because there’s no ABAP Dictionary view attached to a CDS view entity.
- The view entity is defined using the statement DEFINE VIEW ENTITY.
CDS View entity is the future of CDS View but its not going to replace DDIC-based view Sonner. If we see the benefits its worth trying. ABAP on Cloud or RAP already using CDS view entities instead of DDIC-based View.
