Getting xstring value from Source / URL

Code snippet to get Xstring value from source file either URL or Path File

DATA lr_mime_repository TYPE REF TO if_mr_api.
  "
  " Variables
  DATA lv_img_xstring TYPE xstring.

  SELECT SINGLE zparam_val1 FROM zett_value
  INTO gv_img_source
  WHERE zformtyp = 'ED03'
    AND zparam_id1 = 'PATH'
    AND zparam_id2 = 'NOPHOTO'.


  TRY.
      "MIME repository reference
      lr_mime_repository = cl_mime_repository_api=>get_api( ).

      "Get file from MIME
      CALL METHOD lr_mime_repository->get
        EXPORTING
          i_url             = gv_img_source
          i_check_authority = ' '
        IMPORTING
          e_content         = lv_img_xstring.

    CATCH cx_root.
  ENDTRY.

  "Return binary representation of file
  gv_image_default = lv_img_xstring.