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How does the BEGRNG - NXTRNG work?
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How does the BEGRNG - NXTRNG work?
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Demi
Veteran Member
Posts: 67
7/20/2010 6:10 PM
I'm trouble-shooting an existing program that uses the BEGRNG and NXTRNG commands. Can anyone explain to me how this works? When using these, is the table read sequetially; or is the table read in the sequence of the index key? Also, Lawson's data documentation often has key fields listed with '*'. Does anyone know what the '*' means?
John Henley
Posts: 3355
7/20/2010 6:46 PM
Split
The BEGRNG/NXTRNG commands read records in the order of the index that is part of the API.
So, for example, if using 850-FIND-BEGRNG-APPSET3, it is using index APPSET3 to return the records.
The way it works:
You fill as many of the DB- fields in the index as possible, starting from the "top" of the list of fields, and then specify the last field you are filling by moving XXXSETY-FIELD-NAME (e.g. APPSET3-REC-STATUS) to WS-DB-BEG-RNG.
So using APPSET3 as the example, you might more a value "XYZ" to DB-PAY-GROUP, 3 to DB-REC-STATUS, and APPSET3-REC-STATUS to WS-DB-BEG-RNG. The 850-FIND-BEGRNG-APPSET3 will return the first APPAYMENT record matching APP-PAY-GROUP = "XYZ" and APP-REC-STATUS = 3. Then calling 860-FIND-NXTRNG-APPSET3 until APPAYMENT-NOTFOUND will return all other APPAYMENT records matching APP-PAY-GROUP = "XYZ" and APP-REC-STATUS = 3. The records are returned in the order of the index APPSET3.
The asterisk means that the field is stored in descending order.
Marc Burnes
Basic Member
Posts: 14
7/21/2010 2:08 PM
Split
If you have not done so already, you should download the API documentation
-Login to mylawson.com
-Get Support --> Knowledge Base
-Click Product Documentation to the right of the search box
-Click Doc Libraries at the top of the page
-Click Lawson System Foundation (Technology)
-Select your LSF release
-Assuming you are on unix, click Developer (Unix)
-Doc for Developers: Lawson 4GL Application Program Interfaces
Quick Link:
http://support.lawson.com.../09000000/eapi-u.pdf
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