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UNSTRING problem


IBM Mainframe Forums -> COBOL Programming
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Apurva Ghogale

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Joined: 20 Sep 2018
Posts: 6
Location: INDIA

PostPosted: Tue Oct 09, 2018 4:51 pm
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Hi Robert,

Can you please suggest how to resolve the above probelm? What needs to be done if after 1st unstring it causes ON OVERFLOW condition.
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Robert Sample

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Joined: 06 Jun 2008
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Location: Dubuque, Iowa, USA

PostPosted: Tue Oct 09, 2018 5:30 pm
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First, you need to understand that this is NOT a problem -- it is the way UNSTRING works!

Second, what needs to be done ON OVERFLOW depends upon the application. Sometimes, the application just wants the first (or first few) field(s) so the ON OVERFLOW can be ignored. Sometimes, the application needs all the data fields and hence a loop would be needed to UNSTRING the first field, move the remaining bytes over, and then repeating the UNSTRING until ON OVERFLOW no longer occurs. If there are a variable number of fields to be discovered, UNSTRING is not a great choice -- reference modification would probably be a better choice as it is less restrictive in how it works.
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Rohit Umarjikar

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Joined: 21 Sep 2010
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PostPosted: Tue Oct 09, 2018 7:19 pm
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Apurva, Please start a new post next time instead of replying to any older post.
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Robert Sample

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PostPosted: Tue Oct 09, 2018 8:02 pm
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I've split the topic from ibmmainframes.com/viewtopic.php?t=51383
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