Interested to Buy Any Domain ? << Click Here >> for more details...
How can i check the object existance in RPG program without
using QCMDEXC command.
- 7 Answers
- 33081 Views
- IBM, JDA, I also Faced
- E-Mail Answers
Answer Posted / naveen chandra joshi
The question is:
How can i check the object existence in RPG program without
using QCMDEXC command?
Answers posted by AS/400 experts:- use Monitor On error; what if file is not in user opened mode and already declared & opened in F specs...this solution will not work in this case and program will throw error when it tries to open the file in F specs itself...(This we can solve using File Information DS)
User wants to know the object existence, it (object)can be file object, program object or any other type of object.
Generally we check object existence by using CHKOBJ command but user said not to use QCMDEXC API...
The solution is(by using QUSROBJD API):
*---------- Global variables: ----------------------*
D ObjNam s 10a
D ObjLib s 10a
D ObjTyp s 10a
*---------- Api error data structure: --------------*
D ApiError Ds
D AeBytPro 10i 0 Inz( %Size(ApiError))
D AeBytAvl 10i 0 Inz
D AeMsgId 7a
D 1a
D AeMsgDta 128a
*-- Retrieve object description: -----------------------*
D RtvObjD Pr ExtPgm('QUSROBJD')
D RoRcvVar 32767a Options(*VarSize )
D RoRcvVarLen 10i 0 Const
D RoFmtNam 8a Const
D RoObjNamQ 20a Const
D RoObjTyp 10a Const
D RoError 32767a Options(*VarSize)
C Eval ObjNam = '???'
C Eval ObjLib = '*LIBL'
C Eval ObjTyp = '*PGM'
*
C CallP RtvObjD( RoData
C : %Size( RoData )
C : 'OBJD0100'
C : ObjNam + ObjLib
C : ObjTyp
C : ApiError
C )
*
C If AeBytAvl > *Zero And
C AeMsgId = 'CPF9801'
*-- Object doesn't exist...
C EndIf
*
C Return
| Is This Answer Correct ? | 1 Yes | 3 No |
Post New Answer View All Answers
What are the types of identifiers?
How many program bind in one module....
during execution, an rpg/400 program automatically follows a sequence of operations for each record that is processed. The built-in program cycle includes the following logical steps.
RETRIVING DELETED RECORDS :- I'm frequently asked how to retrieve deleted records from an unjournaled physical file when the deleted records have not yet been removed from the file. Utility UNDEL lets you undelete records in a physical file. This public domain program is available in CISC and RISC versions, and the complete source code is available for download at: UNDEL for AS/400 Save File (RISC): http://www.as400network.com/sharewarefiles/undelris.zip UNDEL for AS/400 Save File (CISC): http://www.as400network.com/sharewarefiles/undel.zip UNDEL for AS/400 Save File (Source code): http://www.as400network.com/sharewarefiles/undelsrc.zip The utility takes advantage of the fact that deleted records in physical files are only flagged as deleted, and the record data still exists until it is overwritten or the file is reorganized with a utility such as RGZPFM. UNDEL simply reads the deleted record, then reuses the record by writing over it with the new record (thus eliminating the flag for the deleted record). Some homegrown and commercial utilities copy the file containing undeleted records to a save file, then use a program to read the save file, which contains live and undeleted records, to a file to undelete the records. The UNDEL utility is superior to the SAVF technique because there's no need to copy the file to a save file, which is especially important for really large files. When run, UNDEL displays the physical file records in their unformatted, raw text form. You can either position the display to a given relative record number or use F19 or F20 to find the previous and next deleted record, respectively. The utility also includes online help, which is almost unheard of for free utilities. Other utilities include the ability to undelete records. You can use the RTVDLTRCD command in the old QUSRTOOL (no longer supported by IBM). QUSRTOOL is now a commercial product called TAA Productivity Tools ( http://www.taatool.com ). The free file editor WRKDBF has a built-in undelete capability ( http://www.wrkdbf.com ), and several commercial file editors can undelete records. For a complete list of file editors, go to http://www.sourcebook400.com, select "Programmer Tools" under "Product Category," then select "File Editors."
How can we override a file during runtime in rpg?
do you use message subfiles? What are the necessary keywords required coding a message subfile?
thanks mr.Harshad R Suryawaunshi,i'm new to as400 i think you are telling in rpgile i know only rpg400 if possible can you tell in rpg400
How to call one program from another program in RPG? please help me with the code
what is the necessary keyword needed to scroll subfile records?
How Chain operation copies the record's data to the input buffer for the program?
How to write record if no field or the field are different in physical file in rpgle ?
can I touch the array during treatments?
what is the use of sflnxtchg?
When it is desirable to describe files Internally?
How to handle duplicate error handling in RPG?
