Hello Prabaharan,
In order to Read Media content from Gateway ( Get_Stream ) which you have create through your Create_Stream , you have to set the data object as media type in the model.
In that case please use the below code at the end in your model class.
Data : lo_data_object type ref to /iwbep/if_mgw_odata_entity_typ.
< ---- Declare all the other properties --- >
lo_data_object->set_is_media( ).
( setting a data object as media type means that it gets a special semantic by having a url and allows streaming etc.)
URL would be - Add the Host in the beginning
/sap/opu/odata/sap/<SRV_NAME>/<Entitty_Set_Name>(<Pass Keys>='')/$value
Try this and revert if any difficulty.
Regards,
Ashwin