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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 48195] New: Optimise evaluation of IF() and CHOOSE() - avoid eager evaluation of unused operands
Date Fri, 13 Nov 2009 20:56:30 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=48195

           Summary: Optimise evaluation of IF() and CHOOSE() - avoid eager
                    evaluation of unused operands
           Product: POI
           Version: 3.1
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: HSSF
        AssignedTo: dev@poi.apache.org
        ReportedBy: josh@gildedtree.com


Sometimes referred to as "short-circuit" evaluation.  The formula Ptg arrays
are already marked up with Attr tokens (tAttrIf, tAttrChoose and tAttrSkip) to
help with this.  POI currently ignores these tokens, and by default does eager
evaluation on all operands.

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