[jira] [Assigned] (JENA-162) Add FROM/FROM NAMED support to Fuseki

["Rob Vesse (Assigned) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JENA-162?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Rob Vesse reassigned JENA-162:
------------------------------

    Assignee: Rob Vesse
    
> Add FROM/FROM NAMED support to Fuseki
> -------------------------------------
>
>                 Key: JENA-162
>                 URL: https://issues.apache.org/jira/browse/JENA-162
>             Project: Apache Jena
>          Issue Type: New Feature
>          Components: Fuseki
>    Affects Versions: Fuseki 0.2.1
>            Reporter: Rob Vesse
>            Assignee: Rob Vesse
>              Labels: from, from-named, sparql
>         Attachments: FusekiFromSupport.patch
>
>
> Fuseki currently does not support FROM/FROM NAMED clauses returning a HTTP 400 error if a user tries to make use of them
> The attached patch provides for optional enabling of this feature by a user specified --from or --allowFrom switch when the server is started or programmtically via ARQ.getContext().set(Fuseki.enableFromClauses, true).  Therefore unless a user turns this feature on by default the old behavior remains in place.
> When enabled Fuseki will not reject queries with FROM/FROM NAMED in them and will use DynamicDatasets.dynamicDataset() to build the dataset for queries, there is minimal overhead for queries without FROM/FROM NAMED clauses as the code in DynamicDatasets appears to leave the default dataset unchanged if no dataset description is present in the query AFAICT
> A small number of tests has been added to TestQuery.java to test the behaviour, more tests might be desirable and I can probably supply those if necessary but the ones given test all the obvious combinations with the trivial test data used by TestQuery

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