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From "Minto van der Sluis (JIRA)" <>
Subject [jira] [Updated] (CLEREZZA-782) Add meta data (getResultVars) to Sparql ResultSet
Date Thu, 23 May 2013 11:42:19 GMT


Minto van der Sluis updated CLEREZZA-782:

    Summary: Add meta data (getResultVars) to Sparql ResultSet  (was: Add meta data (varNames)
to Sparql ResultSet)
> Add meta data (getResultVars) to Sparql ResultSet
> -------------------------------------------------
>                 Key: CLEREZZA-782
>                 URL:
>             Project: Clerezza
>          Issue Type: Bug
>          Components: rdf.core
>            Reporter: Minto van der Sluis
>            Assignee: Minto van der Sluis
> The class ResultSet only allows indirect access to the varNames in the query results.
There are a number of drawbacks to the current solution:
> 1) the iterator needs to be accessed to get the varNames from SolutionMapping.getKeySet()
> 2) I suspect that optional varNames present in the Query but not in the resultset data
will not appear in SolutionMapping.getKeySet()
> 3) If the RestultSet is empty there is no way to determine the varNames();
> Both Jena and Sesame support retrieving the varNames from the ResultSet.
> See also the mailing list conversation at:

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