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Posted to dev@jena.apache.org by "Andy Seaborne (JIRA)" <ji...@apache.org> on 2012/11/04 19:10:12 UTC

[jira] [Commented] (JENA-330) Streaming support for SPARQL Update queries and streaming support for quads in INSERT DATA / DELETE DATA queries

    [ https://issues.apache.org/jira/browse/JENA-330?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13490241#comment-13490241 ] 

Andy Seaborne commented on JENA-330:
------------------------------------

The patch doesn't align in the parser due to deprecating, then ripping out, the SPARQL Submission transition support.  I didn't feel I understood it well enough to manualy apply it.

I have added the null graph store/ transaction additions.


I wonder if the best approach is to focus on the SPARQL Graph Store Protocol for bulk addition of data.  We could have POST to a graph be streaming triples and POST to the dataset itself for streaming quads.

                
> Streaming support for SPARQL Update queries and streaming support for quads in INSERT DATA / DELETE DATA queries
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: JENA-330
>                 URL: https://issues.apache.org/jira/browse/JENA-330
>             Project: Apache Jena
>          Issue Type: Improvement
>          Components: ARQ
>            Reporter: Stephen Allen
>            Assignee: Stephen Allen
>            Priority: Minor
>         Attachments: config-null.ttl, JENA-330_20121016.patch, TestLargeUpdates.java
>
>
> The SPARQL Update parser currently parses all update queries into a single UpdateRequest object which holds them in memory.  Instead the parser should insert queries into something like a Sink<Update>.  Additionally it should put the quads from INSERT_DATA and DELETE_DATA into a Sink<Quad> instead of an ArrayList.
> This should allow the creation of a streaming update parser, which could be combined with JENA-309 to have full streaming into an underlying transactional store and the ability to handle arbitrarily large INSERT_DATA or DELETE_DATA queries (to the limits of the transaction system).

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