[jira] [Comment Edited] (JENA-1158) Provide unionDefaultGraph for all graghs.

["Andy Seaborne (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/JENA-1158?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15213432#comment-15213432 ] 

Andy Seaborne edited comment on JENA-1158 at 3/27/16 11:33 AM:
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See also {{DynamicDatasets}} which includes an option for a union default graph.  It currently uses {{GraphUnionRead}} for the union.

This could be improved with JENA-1074. 

Better would be to have unionDefaultGraph implemented in the {{DatasetGraph}} framework so implementations can do a better job than a default mechanism if they can.

JENA-642 appears to do the distinct reduction in the wrong place (on BGP, not on each triple pattern).





was (Author: andy.seaborne):
See also {{DynamicDataset}} which includes an option for a union default graph.  It currently uses {{GraphUnionRead}} for the union.

This could be improved with JENA-1074. 

Better would be to have unionDefaultGraph implemented in the {{DatasetGraph}} framework so implementations can do a better job than a default mechanism if they can.

JENA-642 appears to do the distinct reduction in the wrong place (on BGP, not on each triple pattern).




> Provide unionDefaultGraph for all graghs.
> -----------------------------------------
>
>                 Key: JENA-1158
>                 URL: https://issues.apache.org/jira/browse/JENA-1158
>             Project: Apache Jena
>          Issue Type: Improvement
>          Components: ARQ
>    Affects Versions: Jena 3.0.1
>            Reporter: Andy Seaborne
>
> Provide "unionDefaultGraph" for all graphs.



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