IBM C
INMOD and notify exit routines written in IBM C must:
To create and use an IBM C INMOD or notify exit routine on z/OS
1 Prepare the INMOD routine source file.
2 Compile the INMOD routine.
3 Link‑edit the INMOD program and store the results as an z/OS load library file.
4 Invoke the Teradata FastLoad utility to execute the INMOD routine.
Example
The INMOD routine in the following example reads the data from the input source and presents it, as read, to the Teradata FastLoad utility. BTEQ1 creates a table on the Teradata Database and BTEQ2 selects rows from the table to check for properly loaded data.
This basic program can be modified to select records that meet a specified criteria, convert certain fields, or perform other preprocessing functions.
//* Compile and link‑edit the INMOD
//******************************************************************
//IBMCOMPL EXEC LC370CL,ENTRY=DYNNR,PARM.C='DYNAMNDEF,OPTIMIZE'
//C.SYSLIB DD
// DD DISP=SHR,DSN=<Your macro library>
//C.SYSIN DD *
//******************************************************************
//* Link‑edit the INMOD *
//******************************************************************
//LKED.SYSLMOD DD DISP=SHR,DSN=<Your load library>
//LKED.SYSIN DD *
NAME MYINMOD(R)
//****************************************************************
//* Execute BTEQ to create a Teradata DBS table *
//* *
//* The BTEQ statement .run ddname=logon allows the user to *
//* place sensitive logon information in a secure data set (in *
//* this case, the ddname is logon). Logging on from a data *
//* set prevents this sensitive information from appearing in *
//*the SYSIN file. *
//****************************************************************
//BTEQ1 EXEC TDSBTEQ
//LOGON DD DSN=JLH.CNTL(JLHLOGON),DISP=SHR
//SYSIN DD DATA,DLM=##
.run ddname=logon
drop table stuff;
drop table stuff_error1;
drop table stuff_error2;
create table stuff (t1 char(40), t2 char(40))
primary index(t1);
.quit
##
//*
//*
//FAST EXEC TDSFAST
//FASTLOAD.STEPLIB DD
// DD
// DD DISP=SHR,DSN=<your load library>
//FASTLOAD.SYSIN DD DATA,DLM=$$
LOGON <Logon userid and password>
BEGIN LOADING stuff ERRORFILES stuff_error1,stuff_error2;
DEFINE t1 (char(40)),
t2 (char(40))
INMOD=MYINMOD;
INSERT INTO stuff (:t1,:t2);
END LOADING;
logoff;
$$
//FASTLOAD.EXPORT DD DSN=JLH.STUFF.DATA,DISP=SHR
//*
//****************************************************************
//* Using BTEQ, select the rows loaded by FastLoad *
//****************************************************************
//BTEQ2 EXEC TDSBTEQ
//LOGON DD DSN=JLH.CNTL(JLHLOGON),DISP=SHR
//SYSIN DD DATA,DLM=##
.run ddname=logon
select * from stuff order by 1;
.quit