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From "Aeham Abushwashi (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (TIKA-2025) Extraction of long sequences of digits from Excel spreadsheets using Tika 1.13 doesn’t yield the expected results
Date Fri, 22 Jul 2016 15:03:20 GMT

    [ https://issues.apache.org/jira/browse/TIKA-2025?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15389645#comment-15389645
] 

Aeham Abushwashi commented on TIKA-2025:
----------------------------------------

Thank you very much Tim!

I’ve tested the change with my example file and it works beautifully for both 15- and 16-digit
credit card numbers.
Out of interest, what’s the difference between my 16-digit numbers and the numbers you’ve
used in the unit test data file? I imagine it’s cell formatting but I thought it’s not
possible to format a 16-digit sequence as a number in Excel.

> Extraction of long sequences of digits from Excel spreadsheets using Tika 1.13 doesn’t
yield the expected results
> -----------------------------------------------------------------------------------------------------------------
>
>                 Key: TIKA-2025
>                 URL: https://issues.apache.org/jira/browse/TIKA-2025
>             Project: Tika
>          Issue Type: Bug
>          Components: parser
>    Affects Versions: 1.13
>            Reporter: Aeham Abushwashi
>            Assignee: Tim Allison
>             Fix For: 2.0, 1.14
>
>         Attachments: Credit Card Numbers.xlsx
>
>
> If an Excel spreadsheet contains a long sequence of digits, such as a credit card number,
Tika 1.13 will emit the said sequence in scientific notation.
> For example, the credit card number “340229177292566” is extracted from the attached
spreadsheet as 3.40229E+14, which clearly is not the desired output. 
> This works as expected in 1.12 and earlier. I suspect POI’s recent use of org.apache.poi.ss.usermodel.ExcelGeneralNumberFormat
is to blame.
> I think the impact of this issue is significant. There’s plenty of information that
can no longer be reliably extracted from spreadsheets. Think credit card numbers, telephone
numbers and product identifiers to name a few.



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