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From bugzi...@apache.org
Subject [Bug 55640] Get IndexOutOfBoundsException while creating Excel with data grouping
Date Fri, 22 Nov 2013 22:11:42 GMT
https://issues.apache.org/bugzilla/show_bug.cgi?id=55640

--- Comment #1 from Dominik Stadler <dominik.stadler@gmx.at> ---
I tried to work on this and found one smaller issue in XSSFSheet.writeHidden(),
it will start at row 0 instead of skipping to the start of the group, however
this does not fix all broken cases, the issue seems to be that we write to the
additional row multiple times if there are nested groups with the same end-row
used and unsetting the collapsed state on the internal structures twice is not
possible.

I think we need to take another look at how the spec defines how groups are
stored, there seems to be some difference between what POI writes and what
other applications write, at least some sample files did behave strange in
LibreOffice (no MS Office available right now...).

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