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Posted to dev@jena.apache.org by "Andy Seaborne (Commented) (JIRA)" <ji...@apache.org> on 2012/03/30 17:18:29 UTC

[jira] [Commented] (JENA-228) Limiting query output centrally

    [ https://issues.apache.org/jira/browse/JENA-228?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13242423#comment-13242423 ] 

Andy Seaborne commented on JENA-228:
------------------------------------

There isn't -- it would be a good idea though.  A patch contributed would be gratefully received.

The structure would be to take a limit from the context of execution (which is the context found in the order query execution specific settings -- dataset specific setting -- global settings), then wrap a (limit) algebra operator around the execution.  This limits the graph pattern (.e. SELECT query) but that would be useful on it's own.

It looks to me like an ARQ feature - not specific to Fuseki.

See also JENA-218 about timeouts. 

                
> Limiting query output centrally
> -------------------------------
>
>                 Key: JENA-228
>                 URL: https://issues.apache.org/jira/browse/JENA-228
>             Project: Apache Jena
>          Issue Type: New Feature
>          Components: ARQ, Fuseki
>    Affects Versions: ARQ 2.9.0, Fuseki 0.2.1
>            Reporter: Giuseppe Sollazzo
>
> I was wondering whether there will be some way of limiting output in fuseki. Basically, I'd like to be able to enforce limits on the number of results returned by the system.
> As an example, think about a "numrows" in sql.

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