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https://issues.apache.org/jira/browse/JENA-238?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andy Seaborne closed JENA-238.
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> construct query where clause does not seem to work as advertised
> ----------------------------------------------------------------
>
> Key: JENA-238
> URL: https://issues.apache.org/jira/browse/JENA-238
> Project: Apache Jena
> Issue Type: Bug
> Components: ARQ, LARQ
> Affects Versions: ARQ 2.9.0, LARQ 1.0.0
> Environment: Windows Vista 32-bit
> Reporter: Andrew Crapo
> Assignee: Andy Seaborne
>
> Here are two queries:
> select ?o ?o1 ?o2 where {<http://sadl.org/AssetManagement/ALoco#LocoA>
> <http://com.ge.research.sadl/locomotive#poweredBy> ?o .
> OPTIONAL {?o
> <http://com.ge.research.sadl/locomotive#operatingTemperature> ?o1} .
> OPTIONAL {?o
> <http://com.ge.research.sadl/locomotive#desiredOperatingTemperature> ?o2}}
>
> construct where {<http://sadl.org/AssetManagement/ALoco#LocoA>
> <http://com.ge.research.sadl/locomotive#poweredBy> ?o .
> OPTIONAL {?o
> <http://com.ge.research.sadl/locomotive#operatingTemperature> ?o1} .
> OPTIONAL {?o
> <http://com.ge.research.sadl/locomotive#desiredOperatingTemperature> ?o2}}
> My understanding is that the where clause for construct should handle
> OPTIONAL. The first query works fine, the second query has a parse error. The
> same is true if I try to use a construct query with a UNION in it--it will
> not parse.
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