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Date: Tue, 4 Sep 2012 19:23:09 +1100 (NCT)
From: "Bart van der Schans (JIRA)" <jira@apache.org>
To: dev@jackrabbit.apache.org
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Subject: [jira] [Closed] (JCR-3401) Wrong results when querying with a
 DescendantSelfAxisQuery
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     [ https://issues.apache.org/jira/browse/JCR-3401?page=3Dcom.atlassian.=
jira.plugin.system.issuetabpanels:all-tabpanel ]

Bart van der Schans closed JCR-3401.
------------------------------------

   =20
> Wrong results when querying with a DescendantSelfAxisQuery
> ----------------------------------------------------------
>
>                 Key: JCR-3401
>                 URL: https://issues.apache.org/jira/browse/JCR-3401
>             Project: Jackrabbit Content Repository
>          Issue Type: Bug
>          Components: jackrabbit-core, query
>    Affects Versions: 2.3.7, 2.4.2, 2.5
>            Reporter: C=C3=A9dric Damioli
>            Assignee: Alex Parvulescu
>             Fix For: 2.4.3, 2.6
>
>         Attachments: DescendantSelfAxisQuery.java.patch, SimpleDescendant=
SelfAxisTest.java
>
>
> It seems to be caused by the DescendantSelfAxisScorer in the method advan=
ce(int target) :
> {code}
>         public int advance(int target) throws IOException {
>             if (currentDoc =3D=3D NO_MORE_DOCS) {
>                 return currentDoc;
>             }
>             // optimize in the case of an advance to finish.
>             // see https://issues.apache.org/jira/browse/JCR-3082
>             if (target =3D=3D NO_MORE_DOCS) {
>                 subScorer.advance(target);
>                 currentDoc =3D NO_MORE_DOCS;
>                 return currentDoc;
>             }
>             currentDoc =3D subScorer.nextDoc();
>             if (currentDoc =3D=3D NO_MORE_DOCS) {
>                 return NO_MORE_DOCS;
>             } else {
>                 collectContextHits();
>                 return isValid(currentDoc) ? currentDoc : nextDoc();
>             }
>         }
> {code}
> It seems to me that we should have:=20
> {code}
> currentDoc =3D subScorer.advance(target)=20
> {code}
> instead of:=20
> {code}
> currentDoc =3D subScorer.nextDoc();
> {code}
> I could provide a patch but I don't know if this is necessary for a singl=
e line of code.
> Moreover, I don't know if my fix is ok, as I'm not sure to fully understa=
nd the whole picture.

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