OpenEdge Data Management: DataServer for Microsoft SQL Server

Chapter 3: RDBMS Stored Procedure Details
DEFINE VARIABLE hSendSQL AS HANDLE NO-UNDO EXTENT 1.
DEFINE VARIABLE phDataSet AS HANDLE NO-UNDO.
DEFINE VARIABLE rid-1 AS ROWID NO-UNDO.
DEFINE VARIABLE rdi-2 AS ROWID NO-UNDO.
DEFINE TEMP-TABLE ttCustomer LIKE Sports.Customer
FIELD tRecid AS ROWID
FIELD tRECID_ident AS INTEGER.
hSendSQL[1] = TEMP-TABLE ttCustomer:HANDLE.
DEFINE DATASET dsCustomer FOR ttCustomer.
DEFINE QUERY qCustomer FOR Customer.
phDataSet = DATASET dsCustomer:HANDLE.
phDataSet:SET-CALLBACK-PROCEDURE
(“BEFORE-FILL”, “preDataSetFill”, THIS-PROCEDURE).
DEFINE DATA-SOURCE srcCustomer FOR QUERY qCustomer.
BUFFER ttCustomer:HANDLE:ATTACH-DATA-SOURCE
(DATA-SOURCE srcCustomer:HANDLE,?,?,?).
DATASET dsCustomer:FILL().
FIND FIRST Customer WHERE Customer.CustNum = 1 NO-LOCK.
rid-1 = ROWID(Customer).
FIND FIRST ttCustomer WHERE ttCustomer.CustNum = 1 NO-LOCK.
rid-2 = ttCustomer.tRecid.
IF rid-1 NE rid-2 THEN
MESSAGE “The same record but different ROWID’s”.
IF rid-1 EQ rid-2 THEN
MESSAGE “Congratulations - we have the same ROWID’s”.
MESSAGE STRING(ttCustomer.tRecid) VIEW-AS ALERT-BOX.
PROCEDURE preDataSetFill:
DEFINE INPUT PARAMETER DATASET FOR dsCustomer.
DEFINE VARIABLE handle1 AS INTEGER NO-UNDO.
DEFINE VARIABLE hSendSQL AS HANDLE NO-UNDO EXTENT 1.
hSendSQL[1] = TEMP-TABLE ttCustomer:HANDLE.
IF DBTYPE(NUM-DBS) NE ”PROGRESS” THEN DO:
DISPLAY “DataServer FILL using SEND-SQL”.
BUFFER ttCustomer:HANDLE:FILL-MODE = ”NO-FILL”.
RUN STORED-PROC send-sql-statement LOAD-RESULT-INTO hSendSQL
(“select * from customer”).
END.
ELSE DO: /* normal OpenEddge FILL procedure */
DISPLAY “Native Progress FILL”.
QUERY qCustomer:QUERY-PREPARE(“FOR EACH Customer”).
END.
END PROCEDURE. /* preDataSetFill */
Example 27: Use the LOAD-RESULT-INTO technique with BEFORE-FILL
method to fill the temp-table(s) of a ProDataSet
158 OpenEdge Data Management: DataServer for Microsoft SQL Server