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https://issues.apache.org/jira/browse/RYA-261?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15955138#comment-15955138
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ASF GitHub Bot commented on RYA-261:
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Github user pujav65 commented on the issue:
https://github.com/apache/incubator-rya/pull/146
merged
> Context Validation for StatementPattern Evaluation
> --------------------------------------------------
>
> Key: RYA-261
> URL: https://issues.apache.org/jira/browse/RYA-261
> Project: Rya
> Issue Type: Bug
> Components: clients, dao
> Affects Versions: 3.2.10
> Reporter: Caleb Meier
> Assignee: Caleb Meier
> Fix For: 3.2.10
>
>
> When ParallelEvaluationStrategyImpl evaluates StatementPatterns, it doesn't
> take into account the possibility that context can be specified by the
> BindingSet parameter passed into its evaluate method. The evaluate method
> scans Rya by building an Accumulo Range using all values relevant to the
> Accumulo Row that are included in the StatementPattern and BindingSet.
> However, it does not utilize context when building it Range object because
> context is stored in the Accumulo Column Family. The results of this scan
> are effectively (Statement, BindingSet) pairs that are joined to form a
> result BindingSet. This join process does not take into account the fact
> that the BindingSet could contain a value for the context that is not the
> same as the context value in the Statement. As an example of this incorrect
> behavior, consider the following named graph query:
> select ?c ?x where{ graph ?c { ?x <uri:talksTo> <uri:Bob>; <uri:worksAt>
> <uri:GroceryStore> }}
> If the data (uri:Joe, uri:talksTo, uri:Bob, uri:context1), (uri:Joe,
> uri:worksAt, uri:GroceryStore, uri:context2) is stored in Rya, the above
> query will incorrectly return [?x = uri:Joe, ?c = context1] when it should
> return no results.
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