* Groß-/Kleinschreibung beachten
* Variablennamen durch Komma getrennt, keine Leerzeichen
* Datumswerte mit VarDate=datetime'yyyy-mm-ddThh:mm:ss' konvertieren
* Sonderzeichen/Umlaute konvertieren
* Abfrage-URL
URL/SERVICENAME/ItemCollection(Matnr='000000000001',Date1=datetime'2013-09-04T00%3A00%3A00')?$format=xml
* Variante 1 (get_converted_keys)
METHOD xyz_get_entity.
DATA: lv_carr TYPE /iwbep/s_mgw_name_value_pair-value.
DATA: lv_conn TYPE /iwbep/s_mgw_name_value_pair-value.
io_tech_request_context->get_converted_keys( IMPORTING es_key_values = er_entity ).
TRY.
lv_carr = er_entity-carrid.
lv_conn = er_entity-connid.
...
CATCH cx_root.
ENDTRY.
er_entity = ...
ENDMETHOD.
* Variante 2 (Navigation z.B.: Header -> Position, get_converted_source_keys)
METHOD xyz_get_entityset.
* Typen in MPC definert
DATA: lv_pos TYPE zcl_abc_mpc=>ts_pos.
DATA: lv_matnr TYPE /iwbep/s_mgw_name_value_pair-value.
DATA(lv_source_entity_type_name) = io_tech_request_context->get_source_entity_type_name( ).
CASE lv_source_entity_type_name.
* Konstanten in der MPC definiert
WHEN zcl_abc_mpc=>gc_head.
* Key-Werte in Struktur des Typs zcl_abc_mpc=>ts_pos wandeln
io_tech_request_context->get_converted_source_keys( IMPORTING es_key_values = lv_pos ).
lv_matnr = |{ lv_pos-matnr WIDTH = 18 ALPHA = IN }|.
ENDCASE.
er_entity = ...
ENDMETHOD.
* Variante 3 (get_keys)
METHOD xyz_get_entity.
DATA(it_keys) = io_tech_request_context->get_keys( ).
DATA: lv_key_matnr TYPE /iwbep/s_mgw_tech_pair.
DATA: lv_key_date1 TYPE /iwbep/s_mgw_tech_pair.
TRY.
lv_key_matnr = it_keys[ name = 'MATNR' ].
lv_key_date1 = it_keys[ name = 'DATE1' ].
DATA(lv_matnr) = lv_key_matnr-value.
DATA(lv_date1) = lv_key_date1-value.
...
CATCH cx_root.
ENDTRY.
er_entity = ...
ENDMETHOD.