[jira] [Created] (CLEREZZA-782) Add meta data (varNames) to Sparql ResultSet

["Minto van der Sluis (JIRA)" <ji...@apache.org>]

Minto van der Sluis created CLEREZZA-782:
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             Summary: Add meta data (varNames) to Sparql ResultSet
                 Key: CLEREZZA-782
                 URL: https://issues.apache.org/jira/browse/CLEREZZA-782
             Project: Clerezza
          Issue Type: Bug
          Components: rdf.core
            Reporter: 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: http://mail-archives.apache.org/mod_mbox/clerezza-dev/201303.mbox/%3CCALvhUEUzSAoQpNXVmpTcVvR=DxZrFiDJexPgwB=JEhc7pJf7sA@mail.gmail.com%3E

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