That's correct. We should throw a more useful exception in DateIntervalMapping.

What confused me was the "Details: null" on the validation page, but
after I restarted the server and reloaded the page, I saw proper
exeption messages. When I reloaded the page again, the messages
disappeared and all I saw was "Details: null". Must be caused by this:

http://www.oracle.com/technetwork/java/javase/relnotes-139183.html#hotspot
The compiler in the server VM now provides correct stack backtraces
for all "cold" built-in exceptions. For performance purposes, when
such an exception is thrown a few times, the method may be recompiled.
After recompilation, the compiler may choose a faster tactic using
preallocated exceptions that do not provide a stack trace. To disable
completely the use of preallocated exceptions, use this new flag:
-XX:-OmitStackTraceInFastThrow.


I just added -XX:-OmitStackTraceInFastThrow and restarted the server.
It looks like we always get a more useful message now.

JC

On 9 July 2013 14:45, Andrea Di Menna <[email protected]> wrote:
> I don't think this is a bug.
> That property is used in the DateIntervalMapping and it is trying to cast
> the range of the property to a DataType while skos:Concept is a class.
>
> Does it make sense?
>
>
> 2013/7/9 Jona Christopher Sahnwaldt <[email protected]>
>>
>> All right, after this change:
>>
>>
>> http://mappings.dbpedia.org/index.php?title=OntologyProperty:ActiveYearsEndYear&diff=27217&oldid=27207
>>
>> there are 34 errors again:
>>
>> http://mappings.dbpedia.org/server/mappings/en/validate/*
>>
>> Looks like a bug in mappings loader or somewhere. I'll investigate.
>>
>>
>> On 9 July 2013 14:37, Jona Christopher Sahnwaldt <[email protected]> wrote:
>> > Strange. Now all the errors are gone. Maybe there were only a few
>> > genuine errors, but somehow they caused other exceptions in the
>> > mappings loader. I guess we will never know.
>> >
>> > JC
>> >
>> > On 9 July 2013 12:32, Andrea Di Menna <[email protected]> wrote:
>> >> Hi all,
>> >>
>> >> do you know where those errors are coming from?
>> >>
>> >> http://mappings.dbpedia.org/server/mappings/en/validate/*
>> >>
>> >> Thanks
>> >> Andrea
>> >>
>> >>
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>
>

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