Quelle storedproc.pli Sprache: Pl1

/*
* PLI Stored Procedure SAMPLE.PLISAMP
* @param Action
* @param City
* @param Country
* @param Response
*/

PLISAMP : Procedure ( Action   ,
                       City     ,
                       Country  ,
                       Response ) options (main);

dcl Action   CHAR  (8) VAR;
dcl City     CHAR (32) VAR;
dcl Country  CHAR (32) VAR;
dcl Response CHAR (80) VAR;

dcl Sqlcode_Pic PIC'SSS999';

EXEC SQL INCLUDE SQLCA;

Action=TRANSLATE(Action,'ABCDEFGHIJKLMNOPQRSTUVWXYZ',
                         'abcdefghijklmnopqrstuvwxyz');

select (Action);
   when ('S','SELECT') do;
     Select;
       When (City='' & Country='') do;
         EXEC SQL
           DECLARE C1 CURSOR WITH RETURN WITH HOLD FOR
             SELECT * FROM SAMPLE.CITYTABLE
         ;
         EXEC SQL
           OPEN C1
         ;
       end;
       When (City='') do;
         EXEC SQL
           DECLARE C2 CURSOR WITH RETURN WITH HOLD FOR
             SELECT * FROM SAMPLE.CITYTABLE
               WHERE COUNTRY=:COUNTRY
         ;
         EXEC SQL
           OPEN C2
         ;
       end;
       When (Country='') do;
         EXEC SQL
           DECLARE C3 CURSOR WITH RETURN WITH HOLD FOR
             SELECT * FROM SAMPLE.CITYTABLE
               WHERE CITY=:CITY
         ;
         EXEC SQL
           OPEN C3
         ;
       end;
       Otherwise do;
         EXEC SQL
           DECLARE C4 CURSOR WITH RETURN WITH HOLD FOR
             SELECT * FROM SAMPLE.CITYTABLE
               WHERE CITY=:CITY AND COUNTRY=:COUNTRY
         ;
         EXEC SQL
           OPEN C4
         ;
       end;
     end;
     if Sqlcode=0 then Response='Select successful';
     else do;
       Sqlcode_Pic = Sqlcode;
       Response='Select unsuccessful: Sqlcode '||Sqlcode_Pic;
     end;
   end;
   when ('I','INSERT') do;
     Select;
       When (City='' & Country='')
         Response='Insert unsuccessful: City and Country not specified';
       When (City='')
         Response='Insert unsuccessful: City not specified';
       When (Country='')
         Response='Insert unsuccessful: Country not specified';
       Otherwise do;
         EXEC SQL
           INSERT INTO SAMPLE.CITYTABLE
             (CITY, COUNTRY) VALUES (:CITY, :COUNTRY)
         ;
         if Sqlcode=0 then Response='Insert successful';
         else do;
           Sqlcode_Pic = Sqlcode;
           Response='Insert unsuccessful: Sqlcode '||Sqlcode_Pic;
         end;
       end;
     end;
   end;
   when ('D','DELETE') do;
     Select;
       When (City='' & Country='')
         Response='Delete unsuccessful: City and Country not specified';
       When (City='')
         Response='Delete unsuccessful: City not specified';
       When (Country='')
         Response='Delete unsuccessful: Country not specified';
       Otherwise do;
         EXEC SQL
           DELETE FROM SAMPLE.CITYTABLE
             WHERE CITY=:CITY AND COUNTRY=:COUNTRY
         ;
         if Sqlcode=0 then Response='Delete successful';
         else do;
           Sqlcode_Pic = Sqlcode;
           Response='Delete unsuccessful: Sqlcode '||Sqlcode_Pic;
         end;
       end;
     end;
   end;
   otherwise Response='Action "'||Action||'" not supported';
end;

END PLISAMP;

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