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length of record in variable length file

 
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virumf

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Joined: 07 May 2007
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Location: bangalore

PostPosted: Fri Nov 02, 2007 2:22 pm    Post subject: length of record in variable length file
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Hi,
Can anyone help me out in knowing how to get the length of record of an variable length file in cobol programming.
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dbzTHEdinosauer

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Joined: 20 Oct 2006
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PostPosted: Fri Nov 02, 2007 2:41 pm    Post subject:
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one of the formats of the READ instruction provides for a 'length ' working-storage variable which is populated with the length of the record during execution of the READ instruction. Same is available for the WRITE/REWRITE instructions.
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virumf

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PostPosted: Fri Nov 02, 2007 2:49 pm    Post subject: length of record
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Dick,
thnx for that reply
could you please give me read format that you are telling about..
will be great if you could provide me with example..

Regards,
Veeresh
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enrico-sorichetti

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Joined: 14 Mar 2007
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Location: italy

PostPosted: Fri Nov 02, 2007 3:42 pm    Post subject: Reply to: length of record in variable length file
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Quote:
will be great if you could provide me with example..


searching google for "COBOL VARIABLE LENGTH RECORDS"
will give You links to many more samples
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sai mainframes

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Joined: 02 Nov 2007
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Location: hyderabad

PostPosted: Fri Nov 02, 2007 3:42 pm    Post subject: Reply to: length of record in variable length file
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hi,

first read the file......

Read <file-name>
MOVE LENGTH OF <file-record-name> TO WS-LENGTH


if at all any problem with this code.......please inform me.....



Regards
Saikrishna yadav
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mmwife

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Joined: 30 May 2003
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PostPosted: Wed Nov 07, 2007 12:33 am    Post subject:
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Hi Sai,

Using "LENGTH OF" in this instance will not work because it always returns the length of the 01 level defined in the FD, not the length of the record.

The cleanest way is to define the file in the FD as "RECORD VARYING FROM x TO y DEPENDING ON WS-REC-LEN. Now, whenever a rec is read, its length is placed in WS-REC-LEN.

If he decides to WRITE a rec he must put its length in WS-REC-LEN before the WRITE, unless he hasn't changed the length of the rec just read. In that case he can use the length deposited by the preceding READ.
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