***********************************************************************
** (c) Copyright IBM Corp. 2007 All rights reserved.
**
** The following sample of source code ("Sample") is owned by International
** Business Machines Corporation or one of its subsidiaries ("IBM") and is
** copyrighted and licensed, not sold. You may use, copy, modify, and
** distribute the Sample in any form without payment to IBM, for the purpose of
** assisting you in the development of your applications.
**
** The Sample code is provided to you on an "AS IS" basis, without warranty of
** any kind. IBM HEREBY EXPRESSLY DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR
** IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
** MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do
** not allow for the exclusion or limitation of implied warranties, so the above
** limitations or exclusions may not apply to you. IBM shall not be liable for
** any damages you suffer as a result of using, copying, modifying or
** distributing the Sample, even if IBM has been advised of the possibility of
** such damages.
***********************************************************************
**
** SOURCE FILE NAME: dbcmt.cbl
**
** SAMPLE: Change a database comment in the database directory
**
** DB2 APIs USED:
** db2gDbDirOpenScan -- OPEN DATABASE DIRECTORY SCAN
** db2gDbDirGetNextEntry -- GET NEXT DATABASE DIRECTORY ENTRY
** db2gDbDirCloseScan -- CLOSE DATABASE DIRECTORY SCAN
** sqlgdcgd -- CHANGE DATABASE COMMENT
** sqlgisig -- INSTALL SIGNAL HANDLER
** sqlgdref -- DEREFERENCE ADDRESS
**
**
***********************************************************************
**
** For more information on the sample programs, see the README file.
**
** For information on developing COBOL applications, see the
** Application Development Guide.
**
** For information on DB2 APIs, see the Administrative API Reference.
**
** For the latest information on programming, compiling, and running
** DB2 applications, visit the DB2 Information Center:
** http://publib.boulder.ibm.com/infocenter/db2luw/v9r7/index.jsp
***********************************************************************
Identification Division.
Program-Id. "dbcmt".
Data Division.
Working-Storage Section.
copy "sqlenv.cbl".
copy "sqlutil.cbl".
copy "sqlca.cbl".
copy "db2ApiDf.cbl".
* Local Variables
77 rc pic s9(9) comp-5.
77 idx pic 9(4) comp-5.
77 errloc pic x(80).
* Variables for the CHANGE DATABASE COMMENT API
77 new-comment-len pic 9(4) comp-5 value 22.
77 path-len pic 9(4) comp-5 value 0.
77 alias-len pic 9(4) comp-5 value 0.
77 new-comment pic x(31) value "THIS IS A NEW Comment".
77 path pic x(1025).
* Variables for OPEN/CLOSE DATABASE DIRECTORY APIs.
77 dbCount pic 9(4) comp-5.
* Variables for GET NEXT DATABASE DIRECTORY ENTRY API.
77 db-dir-info-sz pic 9(4) comp-5 value 1654.
77 disp-drive pic x(50).
Procedure Division.
dbcmt-pgm section.
display "Sample COBOL Program : DBCMT.CBL".
**************************
* INSTALL SIGNAL HANDLER *
**************************
call "sqlgisig" using
by reference sqlca
returning rc.
move path-len to DB2-I-PATH-LEN
of DB2G-DB-DIR-OPEN-SCAN-STRUCT.
set DB2-PI-PATH of DB2G-DB-DIR-OPEN-SCAN-STRUCT
to address of path.
******************************************
* OPEN DATABASE DIRECTORY SCAN API called *
*******************************************
call "db2gDbDirOpenScan" using
by value DB2VERSION820
by reference DB2G-DB-DIR-OPEN-SCAN-STRUCT
by reference sqlca
returning rc.
move "OPEN DATABASE DIRECTORY SCAN" to errloc.
call "checkerr" using SQLCA errloc.
move DB2-O-HANDLE of DB2G-DB-DIR-OPEN-SCAN-STRUCT
to DB2-I-HANDLE of DB2G-DB-DIR-CLOSE-SCAN-STRUCT.
move DB2-O-NUM-ENTRIES of DB2G-DB-DIR-OPEN-SCAN-STRUCT
to dbCount.
perform get-db-entry thru end-get-db-entry
varying idx from 0 by 1 until idx equal dbCount.
after-change-comment.
********************************************
* CLOSE DATABASE DIRECTORY SCAN API called *
********************************************
call "db2gDbDirCloseScan" using
by value DB2VERSION820
by reference DB2G-DB-DIR-OPEN-SCAN-STRUCT
by reference sqlca
returning rc.
move "CLOSE DATABASE DIRECTORY SCAN" to errloc.
call "checkerr" using SQLCA errloc.
end-dbcmt. stop run.
get-db-entry section.
************************************************
* GET NEXT DATABASE DIRECTORY ENTRY API called *
************************************************
* set pointer to DB2G-DB-DIR-OPEN-SCAN-STRUCT
move DB2-O-HANDLE of DB2G-DB-DIR-OPEN-SCAN-STRUCT to
DB2-I-HANDLE of DB2G-DB-DIR-NEXT-ENTRY-STRUCT.
call "db2gDbDirGetNextEntry" using
by value DB2VERSION820
by reference DB2G-DB-DIR-NEXT-ENTRY-STRUCT
by reference sqlca
returning rc.
**********************************
* DEREFERENCE ADDRESS API called *
**********************************
call "sqlgdref" using
by value db-dir-info-sz
by reference DB2DB-DIR-INFO
by reference DB2-PO-DB-DIR-ENTRY of
DB2G-DB-DIR-NEXT-ENTRY-STRUCT
returning rc.
if SQL-DBNAME-N equal "SAMPLE "
go to Change-Comment.
end-get-db-entry. exit.
Change-Comment Section.
inspect SQL-ALIAS-N tallying alias-len for characters
before initial " ".
inspect new-comment tallying new-comment-len for characters
before initial " ".
***************************
* CHANGE DATABASE COMMENT *
***************************
call "sqlgdcgd" using
by value new-comment-len
by value path-len
by value alias-len
by reference sqlca
by reference new-comment
by reference path
by reference SQL-ALIAS-N
returning rc.
move "CHANGE DATABASE COMMENT" to errloc.
call "checkerr" using SQLCA errloc.
display "CHANGE DATABASE COMMENT successful".
end-Change-Comment. go to after-change-comment.