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Date: Mon, 9 Aug 2010 06:10:12 -0400 (EDT)
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From: bugzilla@apache.org
To: dev@poi.apache.org
Subject: DO NOT REPLY [Bug 48292] [PATCH] Support of array formulas
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https://issues.apache.org/bugzilla/show_bug.cgi?id=48292

--- Comment #13 from Yegor Kozlov <yegor@dinom.ru> 2010-08-09 06:10:05 EDT ---

Petr,

Thanks again for your contribution. The patch was partially applied in Dec 2009
but there are still issues to address. I think we will need at least one
iteration to sort them out. 

The patch consists of two big parts that were splitted between me and Josh
Micich.

 (1) usermodel API for arrays formulas (me). It is way more complex than just 
setter methods. The API should be consistent and mimic Excel - it should block
changing cells included in multi-cell arrays, prevent data corruption, etc. 
This part is mostly done, see the history in r894469, r893870 and r893625. 

Most of usermodel tests are consolidated in
org.apache.poi.ss.usermodel.BaseTestSheetUpdateArrayFormulas which is used both
by HSSF and XSSF. 

 (2) evaluation of array formulas (Josh). This is the hardest part and it is
still in progress. Let's wait feedback from Josh on how much remains to be
done. 

Regards,
Yegor

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