Ok, thank you. I will see, but I cannot promise anything.

> On 8 Jan 2017, at 21:23, Dominik Stadler <dominik.stad...@gmx.at> wrote:
> 
> Hi,
> 
> Unfortunately this is likely to stay unsupported until somebody comes up
> with the necessary changes. None of the few active devs is currently
> working on this as far as I see, though. Patches are always welcome if you
> managed to take a closer look yourself.
> 
> Dominik.
> 
>> On Tue, Jan 3, 2017 at 9:06 PM, Jörn Franke <jornfra...@gmail.com> wrote:
>> 
>> oh btw. you do not need a Hadoop installation to run the tests, they are
>> simple unit tests.
>> Simply clone https://github.com/ZuInnoTe/hadoopoffice.git
>> Remove all the @Ignore tags from
>> *
>> fileformat/src/test/java/org/zuinnote/hadoop/office/format/mapred/
>> OfficeFormatHadoopExcelTest.java
>> * fileformat/src/test/java/org/zuinnote/hadoop/office/format/mapreduce/
>> OfficeFormatHadoopExcelTest.java
>> 
>> Go to the fileformat. Run gradle clean build
>> 
>>> On Tue, Jan 3, 2017 at 9:03 PM, Jörn Franke <jornfra...@gmail.com> wrote:
>>> 
>>> Hi,
>>> 
>>> sorry I was a little bit late. I tried with 82 and still the same error:
>>> 
>>> java.lang.RuntimeException: Not Implemented - see bug #57184
>>> 
>>> 
>>> I do have a unit test, but it contains a lot of Hadoop stuff. Basically
>> this line fails with the message above:
>>> 
>>> currentWorkbook.linkExternalWorkbook(name,currentLinkedWorkbookParser.
>> getCurrentWorkbook());
>>> 
>>> 
>>> I can clearly see in the source code of XSSFWorkbook that
>> linkExternalWorkbook simply throws a runtime Exception.
>>> 
>>> The only thing that i want to do - and which works with the Excel2003
>> .xls format - is to add an external workbook to the current workbook, refer
>> in a formula to it, e.g. via [linkedwbfile.xlsx]Sheet1!B1. Even if do not
>> use linkExternalWorkbook, but only setupReferencedWorkbooks then i get a
>> null pointer exception when setting the formula referring to an external
>> workbook in the cell. Again this is only for XSSFWorkbook when
>> modifying/adding cells. HSSFWorkbook works fine.
>>> 
>>> I assume the formula evaluator of XSSFWorkbook simply does not
>> understand formulas with external workbook references.
>>> 
>>> 
>>> Let me know if I can do further analysis to solve the issue.
>>> 
>>> thank you a lot.
>>> 
>>> Best regards
>>> 
>>> 
>>> On Sat, Dec 31, 2016 at 6:00 PM, Dominik Stadler <dominik.stad...@gmx.at
>>> 
>>> wrote:
>>> 
>>>> Hi,
>>>> 
>>>> Bug 60219 was not fixed yet, but it is now.
>>>> 
>>>> Can you re-try with a recent build from trunk or use the binaries from
>>>> https://builds.apache.org/view/POI/job/POI-DSL-1.6/65/ when it
>> finishes.
>>>> 
>>>> Thanks... Dominik.
>>>> 
>>>> On Tue, Dec 27, 2016 at 5:21 PM, Jörn Franke <jornfra...@gmail.com>
>>>> wrote:
>>>> 
>>>>> There is already a bug report, see my message.
>>>>> 
>>>>>> On 27 Dec 2016, at 17:15, Murphy, Mark <murphym...@metalexmfg.com>
>>>>> wrote:
>>>>>> 
>>>>>> If you create an issue in bugzilla with a unit test, It will be
>> easier
>>>>> to get that fixed.
>>>>>> 
>>>>>> -----Original Message-----
>>>>>> From: Jörn Franke [mailto:jornfra...@gmail.com]
>>>>>> Sent: Tuesday, December 27, 2016 9:53 AM
>>>>>> To: user@poi.apache.org
>>>>>> Subject: Writing workbooks with linked workbooks using XSSFWorkbook
>>>>>> 
>>>>>> Dear all,
>>>>>> 
>>>>>> I am currently writing an open source library for reading/writing
>>>> office
>>>>> files on Hadoop/Spark/Hive/etc. The code is on Github and an official
>>>>> release in form of a library on maven central will follow soon.
>>>>>> The Excel files will be supported by the Apache POI library (3.15).
>>>>>> So far everything works quiet well, such as reading from linked
>>>>> workbooks (HSSF & XSSF), writing workbooks with linked workbooks
>> (HSSF).
>>>>> However, I have some issues with writing workbooks with linked
>> workbooks
>>>>> using XSSF. I receive the following exception (when calling
>>>>> linkexternalworkbooks):
>>>>>> 
>>>>>> RuntimeException
>>>>>> <http://grepcode.com/file/repository.grepcode.com/java/
>>>>> root/jdk/openjdk/6-b27/java/lang/RuntimeException.java#
>> RuntimeException
>>>>>> ("Not
>>>>>> Implemented - see bug #57184");
>>>>>> 
>>>>>> 
>>>>>> The bug (https://bz.apache.org/bugzilla/show_bug.cgi?id=57184)
>> refers
>>>>> to bug 60219, which is supposed to be fixed in 3.15. However, it does
>>>> not
>>>>> seem that this bug really solves the issue I have.
>>>>>> 
>>>>>> Does anyone know when external workbooks for XSSFWorkbooks will be
>>>>> supported?
>>>>>> 
>>>>>> 
>>>>>> Thank you a lot.
>>>>>> 
>>>>>> 
>>>>>> best regards
>>>>>> B‹KKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKKK
>>>> KKKKKKKKKKCB•
>>>>> È [œÝXœØÜšX™K  K[XZ[ ˆ \Ù\‹][œÝXœØÜšX™P  ÚK˜\ XÚ K›Ü™ÃB‘›Üˆ Y  ] [Û˜[
>>>>> ÛÛ[X[™ Ë  K[XZ[ ˆ \Ù\‹Z [    ÚK˜\ XÚ K›Ü™ÃB
>>>>> 
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>>>> 
>>> 
>>> 
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