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Posted to dev@poi.apache.org by bu...@apache.org on 2015/09/26 15:31:08 UTC

[Bug 58460] New: Cell.getDateCellValue() does not document special case when cell value is between 0 and 1

https://bz.apache.org/bugzilla/show_bug.cgi?id=58460

            Bug ID: 58460
           Summary: Cell.getDateCellValue() does not document special case
                    when cell value is between 0 and 1
           Product: POI
           Version: 3.11-FINAL
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: SS Common
          Assignee: dev@poi.apache.org
          Reporter: vedant@lath.in

When a cell value is in the interval [0, 1),
org.apache.poi.ss.usermodel.Cell.getDateCellValue() returns a Date with the
date 1899-12-31. This cannot be converted back to an Excel Date as the year is
now less than 1900.

In such a case, the comparison excelDate ==
DateUtil.getExcelDate(DateUtil.getJavaDate(excelDate,false)) also fails.

It is not immediately apparent that excel dates in the interval [0, 1) do not
have an equivalent Date value in Java. A naive user might expect such a value
to be converted to 1900-01-01 xx:xx:xx instead of 1989-12-31 xx:xx:xx.

Please document this behaviour in the getDateCellValue() method and in the
DateUtil class.

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[Bug 58460] Cell.getDateCellValue() does not document special case when cell value is between 0 and 1

Posted by bu...@apache.org.
https://bz.apache.org/bugzilla/show_bug.cgi?id=58460

Vedant Lath <ve...@lath.in> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           Hardware|PC                          |All
                 CC|                            |vedant@lath.in
                 OS|Linux                       |All
           Severity|normal                      |trivial

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