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Posted to issues@jena.apache.org by GitBox <gi...@apache.org> on 2022/12/01 17:13:37 UTC
[GitHub] [jena] Aklakan opened a new issue, #1656: Service Enhancer
Aklakan opened a new issue, #1656:
URL: https://github.com/apache/jena/issues/1656
### Version
4.7.0-SNAPSHOT
### What happened?
This is the bug report for the upcoming PR that solves the following 3 issues with the service enhancer plugin:
* A bug in the bulk-query rewriter of the service enhancer omits the ORDER BY on the final query when both LIMIT and ORDER BY are present on the sub-query being looped over:
```sparql
SELECT * {
VALUES ?s { <foo> <bar> }
SERVICE <loop:> {
SELECT * { ?s rdfs:label ?l } ORDER BY ?l LIMIT 1
}
}
```
The members of the generated UNION query incorrectly lack the ORDER BY clause.
* We noticed and fixed an issues with the service enhancer on a TDB with default union graph enabled where unexpectedly triple patterns would not matched against the default graph anymore:
```
?s ?p ?o # This pattern matches correctly against the union default graph
SERVICE <{loop|cache|bulk}:> { ?o ?x ?y } # Used to not match against the default graph anymore.
```
In essence the solution is to use QueryEngineRegistry (which gives all registered plugins a chance to do their processing) rather than QC.execute.
### Relevant output and stacktrace
_No response_
### Are you interested in making a pull request?
Yes
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[GitHub] [jena] afs commented on issue #1656: Service Enhancer Order By and Union Default Graph Issue
Posted by GitBox <gi...@apache.org>.
afs commented on issue #1656:
URL: https://github.com/apache/jena/issues/1656#issuecomment-1345529517
@Aklakan - GH [automatically closes issues](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue) if the description has:
"resolved #1656"
"fixes #1656"
...
but not
> Fixed issues mentioned in ...
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[GitHub] [jena] afs closed issue #1656: Service Enhancer Order By and Union Default Graph Issue
Posted by GitBox <gi...@apache.org>.
afs closed issue #1656: Service Enhancer Order By and Union Default Graph Issue
URL: https://github.com/apache/jena/issues/1656
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