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https://issues.apache.org/jira/browse/OAK-7166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Davide Giannella updated OAK-7166:
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Fix Version/s: 1.16.0
> Union with different selector names
> -----------------------------------
>
> Key: OAK-7166
> URL: https://issues.apache.org/jira/browse/OAK-7166
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: query
> Reporter: Thomas Mueller
> Assignee: Thomas Mueller
> Priority: Major
> Fix For: 1.14.0, 1.16.0
>
>
> The following query returns the wrong nodes:
> {noformat}
> /jcr:root/libs/(* | */* | */*/* | */*/*/* | */*/*/*/*)/install
> select b.[jcr:path] as [jcr:path], b.[jcr:score] as [jcr:score], b.* from
> [nt:base] as a
> inner join [nt:base] as b on ischildnode(b, a)
> where ischildnode(a, '/libs') and name(b) = 'install'
> union select c.[jcr:path] as [jcr:path], c.[jcr:score] as [jcr:score], c.*
> from [nt:base] as a
> inner join [nt:base] as b on ischildnode(b, a)
> inner join [nt:base] as c on ischildnode(c, b)
> where ischildnode(a, '/libs') and name(c) = 'install'
> union select d.[jcr:path] as [jcr:path], d.[jcr:score] as [jcr:score], d.*
> from [nt:base] as a
> inner join [nt:base] as b on ischildnode(b, a)
> inner join [nt:base] as c on ischildnode(c, b)
> inner join [nt:base] as d on ischildnode(d, c)
> where ischildnode(a, '/libs') and name(d) = 'install'
> {noformat}
> If I change the selector name to "x" in each subquery, then it works. There
> is no XPath version of this workaround:
> {noformat}
> select x.[jcr:path] as [jcr:path], x.[jcr:score] as [jcr:score], x.* from
> [nt:base] as a
> inner join [nt:base] as x on ischildnode(x, a)
> where ischildnode(a, '/libs') and name(x) = 'install'
> union select x.[jcr:path] as [jcr:path], x.[jcr:score] as [jcr:score], x.*
> from [nt:base] as a
> inner join [nt:base] as b on ischildnode(b, a)
> inner join [nt:base] as x on ischildnode(x, b)
> where ischildnode(a, '/libs') and name(x) = 'install'
> union select x.[jcr:path] as [jcr:path], x.[jcr:score] as [jcr:score], x.*
> from [nt:base] as a
> inner join [nt:base] as b on ischildnode(b, a)
> inner join [nt:base] as c on ischildnode(c, b)
> inner join [nt:base] as x on ischildnode(x, c)
> where ischildnode(a, '/libs') and name(x) = 'install'
> {noformat}
> Need to check if this is a Oak bug, or a bug in the query tool I use.
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