$FieldgroupOccurrence: Difference between revisions
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<li>In a large record, <var>$FIELDGROUPOCCURRENCE</var> is expensive. It intentionally scans from the start of the record, in case there were additions or deletions of the fieldgroup. | <li>In a large record, <var>$FIELDGROUPOCCURRENCE</var> is expensive. It intentionally scans from the start of the record, in case there were additions or deletions of the fieldgroup. | ||
<p> | <p> | ||
For example, say that a record being processed in an <var>FEO FIELDGROUP</var> loop has thousands of occurrences of a fieldgroup. In this case, invoking <var>$FIELDGROUPOCCURRENCE</var> for each iteration of the loop will be prohibitively expensive, and you can save significant processing resources if you label the FEO loop and substitute a simple <code>OCCURRENCE IN <i>label</i></code> statement for the <var>$FIELDGROUPOCCURRENCE</var> statement: </p> | For example, say that a record being processed in an <var>FEO FIELDGROUP</var> loop has thousands of occurrences of a fieldgroup. In this case, invoking <var>$FIELDGROUPOCCURRENCE</var> for each iteration of the loop will be prohibitively expensive, and you can save significant processing resources if you label the FEO loop and substitute a simple <code>OCCURRENCE IN <i>label</i></code> statement for the <var>$FIELDGROUPOCCURRENCE</var> statement, as shown in the following fragment: </p> | ||
<p class="code">Begin | <p class="code">Begin | ||
... | |||
example1: feo fieldgroup Foo | |||
%id = Foo.ID | |||
%code = Foo.CODE | |||
%text = Foo.TEXT | |||
%occurrence = occurrence in example1 /? was $fieldGroupOccurrence ?/ | |||
end for | |||
... | |||
End | End | ||
</p> | </p> | ||
Latest revision as of 17:43, 21 July 2014
This function returns the current occurrence number of the field group. If the current field group has been deleted, $FIELDGROUPOCCURRENCE returns 0.
$FIELDGROUPOCCURRENCE is available as of Model 204 version 7.5.
Syntax
%num = $FIELDGROUPOCCURRENCE
Example
FOR EACH OCCURRENCE OF FIELDGROUP REDSOX PRINT $FIELDGROUPOCCURRENCE CALL CHANGINGPROC PRINT $FIELDGROUPOCCURRENCE END FOR
This example might print a different value before and after calling the CHANGINGPROC procedure, if that procedure inserted or deleted the field group occurrence before the current one.
Usage notes
- In a large record, $FIELDGROUPOCCURRENCE is expensive. It intentionally scans from the start of the record, in case there were additions or deletions of the fieldgroup.
For example, say that a record being processed in an FEO FIELDGROUP loop has thousands of occurrences of a fieldgroup. In this case, invoking $FIELDGROUPOCCURRENCE for each iteration of the loop will be prohibitively expensive, and you can save significant processing resources if you label the FEO loop and substitute a simple
OCCURRENCE IN labelstatement for the $FIELDGROUPOCCURRENCE statement, as shown in the following fragment:Begin ... example1: feo fieldgroup Foo %id = Foo.ID %code = Foo.CODE %text = Foo.TEXT %occurrence = occurrence in example1 /? was $fieldGroupOccurrence ?/ end for ... End