Custom Entity Value Help Deep Dive: Ayudas de Valores Dinámicas en RAP

Kategorie

RAP

Veröffentlicht

15 feb 2026

Autor

Los Value Helps estándar basados en CDS son ideales cuando los datos están en tablas de base de datos. Pero, ¿qué pasa cuando la ayuda de valores proviene de APIs externas, cálculos complejos o fuentes dinámicas? Aquí entran en juego los Custom Entity Value Helps.

¿Cuándo usar Custom Entity Value Helps?

Los Custom Entity Value Helps son la elección correcta para:

Escenario	Ejemplo
Fuentes de datos externas	Aeropuertos desde API externa de horarios de vuelos
Lógica compleja	Vuelos disponibles según fecha y ruta
Filtros dinámicos	Value Helps dependientes del contexto
Datos agregados	Estadísticas como lista de selección
Datos autorizados	Valores dependiendo del usuario actual

Arquitectura de un Custom Entity Value Help

┌─────────────────────────────────────────────────────────┐
│                 Consumption View                        │
│  @Consumption.valueHelpDefinition: 'ZI_AirportVH'      │
└──────────────────────┬──────────────────────────────────┘
                       │
                       ▼
┌─────────────────────────────────────────────────────────┐
│             Custom Entity: ZI_AirportVH                 │
│  @ObjectModel.query.implementedBy: 'ABAP:ZCL_...'      │
└──────────────────────┬──────────────────────────────────┘
                       │
                       ▼
┌─────────────────────────────────────────────────────────┐
│         Query Implementation Class                      │
│  IF_RAP_QUERY_PROVIDER~SELECT                          │
│  - Filter auswerten                                     │
│  - Suche implementieren                                 │
│  - Daten zurückgeben                                    │
└─────────────────────────────────────────────────────────┘

Paso 1: Definición de Custom Entity

La Custom Entity define la estructura del Value Help:

@EndUserText.label: 'Flughafen Value Help'
@ObjectModel.query.implementedBy: 'ABAP:ZCL_AIRPORT_VH_QUERY'
@Search.searchable: true
@ObjectModel.resultSet.sizeCategory: #M
define custom entity ZI_AirportVH
{
      @EndUserText.label: 'Flughafen-Code'
      @Search.defaultSearchElement: true
      @Search.fuzzinessThreshold: 1.0
      @Search.ranking: #HIGH
  key AirportCode  : abap.char(3);

      @EndUserText.label: 'Flughafenname'
      @Search.defaultSearchElement: true
      @Search.fuzzinessThreshold: 0.8
      @Search.ranking: #MEDIUM
      AirportName  : abap.char(100);

      @EndUserText.label: 'Stadt'
      @Search.defaultSearchElement: true
      @Search.fuzzinessThreshold: 0.85
      City         : abap.char(40);

      @EndUserText.label: 'Land'
      Country      : abap.char(3);

      @EndUserText.label: 'Zeitzone'
      Timezone     : abap.char(20);

      @EndUserText.label: 'Aktiv'
      IsActive     : abap_boolean;
}

Anotaciones Importantes para Value Helps

Anotación	Propósito
`@Search.searchable`	Activa la búsqueda genérica
`@Search.defaultSearchElement`	El campo se considera en la búsqueda
`@Search.fuzzinessThreshold`	Tolerancia para errores de escritura (1.0 = exacto)
`@ObjectModel.resultSet.sizeCategory`	Indicación de rendimiento para Fiori

Paso 2: Clase de Implementación de Query

La clase Query implementa IF_RAP_QUERY_PROVIDER y proporciona los datos:

CLASS zcl_airport_vh_query DEFINITION
  PUBLIC
  FINAL
  CREATE PUBLIC.

  PUBLIC SECTION.
    INTERFACES if_rap_query_provider.

  PRIVATE SECTION.
    TYPES: BEGIN OF ty_airport,
             airport_code TYPE c LENGTH 3,
             airport_name TYPE c LENGTH 100,
             city         TYPE c LENGTH 40,
             country      TYPE c LENGTH 3,
             timezone     TYPE c LENGTH 20,
             is_active    TYPE abap_boolean,
           END OF ty_airport,
           tt_airports TYPE STANDARD TABLE OF ty_airport WITH EMPTY KEY.

    METHODS get_airports
      RETURNING VALUE(rt_result) TYPE tt_airports.

    METHODS apply_filter
      IMPORTING it_filter  TYPE if_rap_query_filter=>tt_name_range_pairs
      CHANGING  ct_data    TYPE tt_airports.

    METHODS apply_search
      IMPORTING iv_search  TYPE string
      CHANGING  ct_data    TYPE tt_airports.

    METHODS apply_sorting
      IMPORTING it_sort    TYPE if_rap_query_request=>tt_sort_elements
      CHANGING  ct_data    TYPE tt_airports.

    METHODS apply_paging
      IMPORTING iv_offset  TYPE i
                iv_limit   TYPE i
      CHANGING  ct_data    TYPE tt_airports.
ENDCLASS.

CLASS zcl_airport_vh_query IMPLEMENTATION.

  METHOD if_rap_query_provider~select.
    " 1. Daten laden
    DATA(lt_airports) = get_airports( ).

    " 2. Filter anwenden
    IF io_request->is_data_requested( ).
      TRY.
          DATA(lt_filter) = io_request->get_filter( )->get_as_ranges( ).
          apply_filter(
            EXPORTING it_filter = lt_filter
            CHANGING  ct_data   = lt_airports
          ).
        CATCH cx_rap_query_filter_no_range.
          " Kein Range-Filter vorhanden
      ENDTRY.

      " 3. Suche anwenden (falls vorhanden)
      TRY.
          DATA(lv_search) = io_request->get_search_expression( ).
          IF lv_search IS NOT INITIAL.
            apply_search(
              EXPORTING iv_search = lv_search
              CHANGING  ct_data   = lt_airports
            ).
          ENDIF.
        CATCH cx_rap_query_provider.
          " Keine Suche
      ENDTRY.

      " 4. Sortierung anwenden
      DATA(lt_sort) = io_request->get_sort_elements( ).
      IF lt_sort IS NOT INITIAL.
        apply_sorting(
          EXPORTING it_sort = lt_sort
          CHANGING  ct_data = lt_airports
        ).
      ENDIF.

      " 5. Gesamtanzahl vor Paging
      DATA(lv_total_count) = lines( lt_airports ).

      " 6. Paging anwenden
      DATA(lv_offset) = io_request->get_paging( )->get_offset( ).
      DATA(lv_limit) = io_request->get_paging( )->get_page_size( ).
      IF lv_limit > 0.
        apply_paging(
          EXPORTING iv_offset = lv_offset
                    iv_limit  = lv_limit
          CHANGING  ct_data   = lt_airports
        ).
      ENDIF.

      " 7. Ergebnis in Entity-Format konvertieren
      DATA lt_result TYPE STANDARD TABLE OF zi_airportvh.
      LOOP AT lt_airports INTO DATA(ls_airport).
        APPEND VALUE #(
          AirportCode = ls_airport-airport_code
          AirportName = ls_airport-airport_name
          City        = ls_airport-city
          Country     = ls_airport-country
          Timezone    = ls_airport-timezone
          IsActive    = ls_airport-is_active
        ) TO lt_result.
      ENDLOOP.

      io_response->set_data( lt_result ).
    ENDIF.

    " 8. Gesamtanzahl zurückgeben
    IF io_request->is_total_numb_of_rec_requested( ).
      io_response->set_total_number_of_records( lv_total_count ).
    ENDIF.
  ENDMETHOD.


  METHOD get_airports.
    " In der Praxis: API-Aufruf, BAPI, RFC, etc.
    " Hier: Beispieldaten
    rt_result = VALUE #(
      ( airport_code = 'FRA' airport_name = 'Frankfurt Airport'
        city = 'Frankfurt' country = 'DE' timezone = 'Europe/Berlin'
        is_active = abap_true )
      ( airport_code = 'MUC' airport_name = 'Munich Airport'
        city = 'München' country = 'DE' timezone = 'Europe/Berlin'
        is_active = abap_true )
      ( airport_code = 'BER' airport_name = 'Berlin Brandenburg'
        city = 'Berlin' country = 'DE' timezone = 'Europe/Berlin'
        is_active = abap_true )
      ( airport_code = 'JFK' airport_name = 'John F. Kennedy'
        city = 'New York' country = 'US' timezone = 'America/New_York'
        is_active = abap_true )
      ( airport_code = 'LHR' airport_name = 'London Heathrow'
        city = 'London' country = 'GB' timezone = 'Europe/London'
        is_active = abap_true )
      ( airport_code = 'CDG' airport_name = 'Charles de Gaulle'
        city = 'Paris' country = 'FR' timezone = 'Europe/Paris'
        is_active = abap_true )
      ( airport_code = 'ZRH' airport_name = 'Zürich Airport'
        city = 'Zürich' country = 'CH' timezone = 'Europe/Zurich'
        is_active = abap_true )
      ( airport_code = 'VIE' airport_name = 'Vienna International'
        city = 'Wien' country = 'AT' timezone = 'Europe/Vienna'
        is_active = abap_true )
    ).
  ENDMETHOD.


  METHOD apply_filter.
    LOOP AT it_filter INTO DATA(ls_filter).
      CASE to_upper( ls_filter-name ).
        WHEN 'AIRPORTCODE'.
          DELETE ct_data WHERE airport_code NOT IN ls_filter-range.
        WHEN 'COUNTRY'.
          DELETE ct_data WHERE country NOT IN ls_filter-range.
        WHEN 'ISACTIVE'.
          DELETE ct_data WHERE is_active NOT IN ls_filter-range.
        WHEN 'CITY'.
          DELETE ct_data WHERE city NOT IN ls_filter-range.
      ENDCASE.
    ENDLOOP.
  ENDMETHOD.


  METHOD apply_search.
    " Fuzzy-Suche über mehrere Felder
    DATA(lv_pattern) = |*{ to_upper( iv_search ) }*|.

    DELETE ct_data WHERE NOT (
      to_upper( airport_code ) CP lv_pattern OR
      to_upper( airport_name ) CP lv_pattern OR
      to_upper( city ) CP lv_pattern
    ).
  ENDMETHOD.


  METHOD apply_sorting.
    LOOP AT it_sort INTO DATA(ls_sort).
      CASE to_upper( ls_sort-element_name ).
        WHEN 'AIRPORTCODE'.
          IF ls_sort-descending = abap_true.
            SORT ct_data BY airport_code DESCENDING.
          ELSE.
            SORT ct_data BY airport_code ASCENDING.
          ENDIF.
        WHEN 'AIRPORTNAME'.
          IF ls_sort-descending = abap_true.
            SORT ct_data BY airport_name DESCENDING.
          ELSE.
            SORT ct_data BY airport_name ASCENDING.
          ENDIF.
        WHEN 'CITY'.
          IF ls_sort-descending = abap_true.
            SORT ct_data BY city DESCENDING.
          ELSE.
            SORT ct_data BY city ASCENDING.
          ENDIF.
        WHEN 'COUNTRY'.
          IF ls_sort-descending = abap_true.
            SORT ct_data BY country DESCENDING.
          ELSE.
            SORT ct_data BY country ASCENDING.
          ENDIF.
      ENDCASE.
    ENDLOOP.
  ENDMETHOD.


  METHOD apply_paging.
    DATA(lv_from) = iv_offset + 1.
    DATA(lv_to) = iv_offset + iv_limit.
    DATA(lv_count) = lines( ct_data ).

    IF lv_from > lv_count.
      CLEAR ct_data.
      RETURN.
    ENDIF.

    IF lv_to > lv_count.
      lv_to = lv_count.
    ENDIF.

    DATA lt_paged LIKE ct_data.
    LOOP AT ct_data INTO DATA(ls_data) FROM lv_from TO lv_to.
      APPEND ls_data TO lt_paged.
    ENDLOOP.

    ct_data = lt_paged.
  ENDMETHOD.

ENDCLASS.

Paso 3: Binding del Value Help

La Custom Entity se usa como Value Help igual que una CDS View normal:

define view entity ZC_FlightBooking
  as projection on ZI_FlightBooking
{
  key BookingUUID,

      @Consumption.valueHelpDefinition: [{
        entity: {
          name: 'ZI_AirportVH',
          element: 'AirportCode'
        },
        additionalBinding: [{
          element: 'AirportName',
          localElement: 'DepartureAirportName',
          usage: #RESULT
        }, {
          element: 'City',
          localElement: 'DepartureCity',
          usage: #RESULT
        }, {
          element: 'Country',
          localElement: 'DepartureCountry',
          usage: #FILTER
        }],
        useForValidation: true
      }]
      DepartureAirport,
      DepartureAirportName,
      DepartureCity,
      DepartureCountry,

      @Consumption.valueHelpDefinition: [{
        entity: {
          name: 'ZI_AirportVH',
          element: 'AirportCode'
        },
        additionalBinding: [{
          element: 'AirportName',
          localElement: 'ArrivalAirportName',
          usage: #RESULT
        }]
      }]
      ArrivalAirport,
      ArrivalAirportName,

      FlightDate,
      Price,
      Currency
}

Filtrado en Custom Entity Value Helps

Filtros Estáticos

Los filtros se pasan automáticamente a la clase Query:

@Consumption.valueHelpDefinition: [{
  entity: {
    name: 'ZI_AirportVH',
    element: 'AirportCode'
  },
  additionalBinding: [{
    element: 'IsActive',
    localConstant: 'X',
    usage: #FILTER
  }]
}]
DepartureAirport,

La clase Query recibe el filtro ISACTIVE = 'X' en get_filter( )->get_as_ranges( ).

Filtros Dinámicos

Dependiendo de otros campos:

@Consumption.valueHelpDefinition: [{
  entity: {
    name: 'ZI_AirportVH',
    element: 'AirportCode'
  },
  additionalBinding: [{
    element: 'Country',
    localElement: 'DepartureCountry',
    usage: #FILTER
  }]
}]
ArrivalAirport,

Aquí solo se muestran aeropuertos en el mismo país que el aeropuerto de salida.

Implementar Búsqueda

La búsqueda genérica se obtiene mediante get_search_expression():

METHOD apply_search.
  DATA(lv_search_upper) = to_upper( iv_search ).

  " Einfache Wildcard-Suche
  DATA(lv_pattern) = |*{ lv_search_upper }*|.

  DELETE ct_data WHERE NOT (
    to_upper( airport_code ) CP lv_pattern OR
    to_upper( airport_name ) CP lv_pattern OR
    to_upper( city ) CP lv_pattern
  ).
ENDMETHOD.

Búsqueda Fuzzy Avanzada

Para mejores resultados de búsqueda con errores de escritura:

METHOD apply_fuzzy_search.
  " Levenshtein-Distanz für Fuzzy-Matching
  " Threshold: 0.8 = 80% Übereinstimmung
  DATA(lv_threshold) = 80.

  LOOP AT ct_data ASSIGNING FIELD-SYMBOL(<ls_data>).
    DATA(lv_match) = abap_false.

    " Prüfe Airport Code (exakt)
    IF to_upper( <ls_data>-airport_code ) CS to_upper( iv_search ).
      lv_match = abap_true.
    ENDIF.

    " Prüfe Airport Name (fuzzy)
    IF lv_match = abap_false.
      DATA(lv_similarity) = calculate_similarity(
        iv_string1 = to_upper( <ls_data>-airport_name )
        iv_string2 = to_upper( iv_search )
      ).
      IF lv_similarity >= lv_threshold.
        lv_match = abap_true.
      ENDIF.
    ENDIF.

    " Prüfe Stadt (fuzzy)
    IF lv_match = abap_false.
      lv_similarity = calculate_similarity(
        iv_string1 = to_upper( <ls_data>-city )
        iv_string2 = to_upper( iv_search )
      ).
      IF lv_similarity >= lv_threshold.
        lv_match = abap_true.
      ENDIF.
    ENDIF.

    IF lv_match = abap_false.
      DELETE ct_data.
    ENDIF.
  ENDLOOP.
ENDMETHOD.

Optimización de Rendimiento

1. Caching para Datos Estáticos

CLASS zcl_airport_vh_query DEFINITION.
  PRIVATE SECTION.
    CLASS-DATA: gt_cache TYPE tt_airports,
                gv_cache_time TYPE timestamp.

    METHODS get_cached_airports
      RETURNING VALUE(rt_result) TYPE tt_airports.
ENDCLASS.

METHOD get_cached_airports.
  " Cache-Gültigkeit: 10 Minuten
  DATA(lv_now) = utclong_current( ).

  IF gt_cache IS INITIAL OR
     cl_abap_tstmp=>subtract( tstmp1 = lv_now
                              tstmp2 = gv_cache_time ) > 600.
    gt_cache = load_airports_from_source( ).
    gv_cache_time = lv_now.
  ENDIF.

  rt_result = gt_cache.
ENDMETHOD.

2. Delegar Filtro a la Fuente de Datos

Si la API externa soporta filtros:

METHOD get_airports_filtered.
  " Filter für API aufbereiten
  DATA lv_country_filter TYPE string.

  LOOP AT it_filter INTO DATA(ls_filter)
    WHERE name = 'COUNTRY'.
    READ TABLE ls_filter-range INDEX 1 INTO DATA(ls_range).
    IF sy-subrc = 0.
      lv_country_filter = ls_range-low.
    ENDIF.
  ENDLOOP.

  " API mit Filter aufrufen
  DATA(lo_client) = get_http_client( ).
  DATA(lv_uri) = |/api/airports|.

  IF lv_country_filter IS NOT INITIAL.
    lv_uri = lv_uri && |?country={ lv_country_filter }|.
  ENDIF.

  lo_client->get_http_request( )->set_uri_path( lv_uri ).
  " ...
ENDMETHOD.

3. Limitar Conjunto de Resultados

METHOD if_rap_query_provider~select.
  " ...

  " Maximal 1000 Einträge zurückgeben
  DATA(lv_max_results) = 1000.

  IF lines( lt_result ) > lv_max_results.
    DELETE lt_result FROM ( lv_max_results + 1 ).
  ENDIF.

  io_response->set_data( lt_result ).
ENDMETHOD.

Ejemplo Completo de Aeropuertos

Custom Entity con Todos los Campos

@EndUserText.label: 'Flughafen Value Help'
@ObjectModel.query.implementedBy: 'ABAP:ZCL_AIRPORT_VALUE_HELP'
@Search.searchable: true
@ObjectModel.resultSet.sizeCategory: #M
@UI.headerInfo: {
  typeName: 'Flughafen',
  typeNamePlural: 'Flughäfen'
}
define custom entity ZI_AirportValueHelp
{
      @EndUserText.label: 'IATA-Code'
      @Search.defaultSearchElement: true
      @Search.fuzzinessThreshold: 1.0
      @Search.ranking: #HIGH
      @UI.lineItem: [{ position: 10 }]
  key AirportId    : abap.char(3);

      @EndUserText.label: 'Name'
      @Search.defaultSearchElement: true
      @Search.fuzzinessThreshold: 0.8
      @Search.ranking: #MEDIUM
      @UI.lineItem: [{ position: 20 }]
      AirportName  : abap.char(100);

      @EndUserText.label: 'Stadt'
      @Search.defaultSearchElement: true
      @Search.fuzzinessThreshold: 0.85
      @UI.lineItem: [{ position: 30 }]
      City         : abap.char(40);

      @EndUserText.label: 'Land'
      @UI.lineItem: [{ position: 40 }]
      CountryCode  : abap.char(2);

      @EndUserText.label: 'Landesname'
      CountryName  : abap.char(60);

      @EndUserText.label: 'Region'
      Region       : abap.char(20);

      @EndUserText.label: 'Breitengrad'
      Latitude     : abap.dec(9,6);

      @EndUserText.label: 'Längengrad'
      Longitude    : abap.dec(9,6);

      @EndUserText.label: 'Zeitzone'
      Timezone     : abap.char(40);

      @EndUserText.label: 'Status'
      @UI.lineItem: [{ position: 50, criticality: 'StatusCriticality' }]
      Status       : abap.char(10);

      StatusCriticality : abap.int1;
}

Uso en la Consumption View

define view entity ZC_Booking
  as projection on ZI_Booking
{
  key BookingId,

      @Consumption.valueHelpDefinition: [{
        entity: {
          name: 'ZI_AirportValueHelp',
          element: 'AirportId'
        },
        additionalBinding: [{
          element: 'AirportName',
          localElement: 'DepartureAirportName',
          usage: #RESULT
        }, {
          element: 'City',
          localElement: 'DepartureCity',
          usage: #RESULT
        }, {
          element: 'CountryCode',
          localElement: 'DepartureCountry',
          usage: #RESULT
        }, {
          element: 'Timezone',
          localElement: 'DepartureTimezone',
          usage: #RESULT
        }, {
          element: 'Status',
          localConstant: 'ACTIVE',
          usage: #FILTER
        }],
        useForValidation: true
      }]
      @UI.lineItem: [{ position: 20, label: 'Von' }]
      DepartureAirport,
      DepartureAirportName,
      DepartureCity,
      DepartureCountry,
      DepartureTimezone,

      @Consumption.valueHelpDefinition: [{
        entity: {
          name: 'ZI_AirportValueHelp',
          element: 'AirportId'
        },
        additionalBinding: [{
          element: 'AirportName',
          localElement: 'ArrivalAirportName',
          usage: #RESULT
        }, {
          element: 'City',
          localElement: 'ArrivalCity',
          usage: #RESULT
        }]
      }]
      @UI.lineItem: [{ position: 30, label: 'Nach' }]
      ArrivalAirport,
      ArrivalAirportName,
      ArrivalCity,

      FlightDate,
      PassengerName,
      BookingStatus
}

Manejo de Errores

El manejo robusto de errores es importante para Custom Entity Value Helps:

METHOD if_rap_query_provider~select.
  TRY.
      DATA(lt_airports) = get_airports_from_api( ).

      " Filter, Sort, Page...
      io_response->set_data( lt_airports ).

    CATCH cx_http_dest_provider_error INTO DATA(lx_dest).
      " Destination nicht konfiguriert
      RAISE EXCEPTION TYPE cx_rap_query_provider
        EXPORTING
          textid   = cx_rap_query_provider=>query_failed
          previous = lx_dest.

    CATCH cx_web_http_client_error INTO DATA(lx_http).
      " API nicht erreichbar
      " Fallback: Leere Liste zurückgeben
      io_response->set_data( VALUE tt_result( ) ).

      IF io_request->is_total_numb_of_rec_requested( ).
        io_response->set_total_number_of_records( 0 ).
      ENDIF.
  ENDTRY.
ENDMETHOD.

Mejores Prácticas

Recomendación	Razón
Establecer anotaciones `@Search`	Activa búsqueda Typeahead
Implementar Paging	Manejar grandes volúmenes de datos
Delegar filtros a la fuente	Mejorar rendimiento
Usar caching	Acelerar llamadas repetidas
Establecer Total Count correctamente	La paginación funciona
Comparar nombres de campo en mayúsculas	Las condiciones de filtro coinciden

Evitar

Evitar	Razón
Cargar todos los datos	Problemas de memoria y rendimiento
Sin manejo de errores	La app falla con errores de API
Llamadas síncronas largas	La UI se congela
Filtros hardcoded	Se pierde flexibilidad

Depuración

Para la búsqueda de errores en Custom Entity Value Helps:

METHOD if_rap_query_provider~select.
  " Logging aktivieren
  DATA(lo_log) = cl_bali_log=>create_with_header(
    header = cl_bali_header_setter=>create(
      object      = 'ZVH_DEBUG'
      subobject   = 'QUERY'
      external_id = |VH_{ sy-uname }_{ sy-datum }|
    )
  ).

  TRY.
      " Filter loggen
      DATA(lt_filter) = io_request->get_filter( )->get_as_ranges( ).
      LOOP AT lt_filter INTO DATA(ls_filter).
        lo_log->add_item( cl_bali_free_text_setter=>create(
          severity = if_bali_constants=>c_severity_information
          text     = |Filter: { ls_filter-name }|
        ) ).
      ENDLOOP.

      " ...

    CATCH cx_root INTO DATA(lx_error).
      lo_log->add_item( cl_bali_exception_setter=>create(
        severity  = if_bali_constants=>c_severity_error
        exception = lx_error
      ) ).
  ENDTRY.

  " Log speichern
  cl_bali_log_db=>get_instance( )->save_log( log = lo_log ).
ENDMETHOD.

Resumen

Los Custom Entity Value Helps ofrecen máxima flexibilidad para ayudas de valores dinámicas:

Aspecto	Implementación
Definición	`define custom entity` con `@ObjectModel.query.implementedBy`
Clase Query	Implementar `IF_RAP_QUERY_PROVIDER~SELECT`
Filtro	`io_request->get_filter( )->get_as_ranges( )`
Búsqueda	`io_request->get_search_expression( )`
Paging	`get_paging( )->get_offset( )` / `get_page_size( )`
Binding	`@Consumption.valueHelpDefinition` como con CDS Views

Con Custom Entity Value Helps puede integrar cualquier fuente de datos como ayuda de valores y usar todas las funciones como filtrado, búsqueda y transferencia automática de campos.

Temas Relacionados

RAP Value Helps - Ayudas de valores basadas en anotaciones con CDS Views
Custom Entities - Integrar fuentes de datos externas en RAP
Búsqueda Genérica en RAP - Anotaciones @Search para Fiori Elements
Fundamentos de RAP - Introducción al RESTful ABAP Programming