Re: Visibility of variables in nested Group(OrUnion)GraphPatterns

On 31/08/15 17:40, Andy Seaborne wrote:
> On 31/08/15 13:07, Michael Schmidt wrote:
>> James, all,
>>
>> thanks for your feedback. As I understand your response, you would agree
>> with my assessment of the expected query results — because in all cases
>> at least one of the variables is not bound in the respective scope, so
>> all queries return the empty result.
>>
>> When it comes to the FILTER queries, there’s broad "agreement" amongst
>> the engines I tested. However, for queries 2a. and 2b. one can observe
>> that many (most) engines, amongst them Sesame and Jena, actually do
>> deliver answers. The same is true for a slight variant of 2b, which
>> pushes the variable bindings into a surrounding VALUES clause:
>
> Any chance of filing a bug report?
>
> https://issues.apache.org/jira/browse/JENA
>
> (it looks an optimizer issue)
>
>      Andy
>

Michael kindly raised https://issues.apache.org/jira/browse/JENA-1018

 Andy

Received on Wednesday, 2 September 2015 13:43:21 UTC