[jira] [Resolved] (JENA-1843) OpAsQuery: Wrong order of Extend/Bind

["Andy Seaborne (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JENA-1843?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Seaborne resolved JENA-1843.
---------------------------------
    Fix Version/s: Jena 3.15.0
       Resolution: Fixed

> OpAsQuery: Wrong order of Extend/Bind
> -------------------------------------
>
>                 Key: JENA-1843
>                 URL: https://issues.apache.org/jira/browse/JENA-1843
>             Project: Apache Jena
>          Issue Type: Bug
>          Components: ARQ
>    Affects Versions: Jena 3.14.0
>            Reporter: Claus Stadler
>            Assignee: Andy Seaborne
>            Priority: Major
>             Fix For: Jena 3.15.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> OpAsQuery breaks BINDs that depend on each other:
>  
> {code:java}
> Query expected = QueryFactory.create("SELECT *
> { ?s ?p ?o BIND(?s AS ?x) BIND(?x AS ?y) }
> ");
>  Query actual = OpAsQuery.asQuery(Algebra.compile(expected));
>  System.out.println(expected);
>  System.out.println(actual);
> {code}
> The two BIND statements incorrectly end up in reversed order - thus ?x is no longer bound in the result set:
> {code:java}
> expected: SELECT * WHERE { ?s ?p ?o BIND(?s AS ?x) BIND(?x AS ?y) }
> actual  : SELECT * WHERE { ?s ?p ?o BIND(?x AS ?y) BIND(?s AS ?x) }
> {code}
>  



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