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can some one explain the below code...

 
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ram_vizag

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Joined: 21 Aug 2008
Posts: 112
Location: hyd

PostPosted: Thu Aug 22, 2013 4:35 pm    Post subject: can some one explain the below code...
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Hi Friends,

I'm doing analysis in jcl,syncsort,rexx...can some one explan the following code:


Code:


$$FILEM DSC INPUT=DD00,
$$FILEM         OUTPUT=DD00O,
$$FILEM         PROC=*
  CHG_OUT('00'X,'40'X,0,1)



I CAN UNDERSTAND that low-values are being converted to spaces but what does 0,1 do in the above code....Could you please expalin
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Pandora-Box

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PostPosted: Thu Aug 22, 2013 4:37 pm    Post subject:
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Did you check the File manager manual?
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Ed Goodman

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Joined: 08 Jun 2011
Posts: 556
Location: USA

PostPosted: Thu Aug 22, 2013 6:38 pm    Post subject:
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From my manual, those are 'count' and 'start' parms.

0 for count means 'change all', 1 for start means start at the beginning of the record.

CHG_OUT is described in the "External REXX Functions" in the "Functions" chapter.

Not sure which version of FileManager you have, but the books are on the IBM website.

What's really happening there is that a record is being read, then a rexx is being called for each record. the rexx is defined instream (PROC=*). The only line of the rexx is "chg_out..." That rexx function does the work of the replacing, the output record then gets copied to the output DD.

You can do a LOT of stuff with FileManager, and the more I use it, the more I learn. This concept of running a rexx on each record took me a while to understand though.
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ram_vizag

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Joined: 21 Aug 2008
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Location: hyd

PostPosted: Fri Aug 23, 2013 12:12 pm    Post subject: Thanks a lot...
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hi all,

i could understand from the manual of filemanager...Thanks a lot...
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