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https://issues.apache.org/jira/browse/OAK-830?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13662844#comment-13662844
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Thomas Mueller commented on OAK-830:
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Revision 1484719 (simplified)
> XPathToSQL2Converter fails to wrap or clauses
> ---------------------------------------------
>
> Key: OAK-830
> URL: https://issues.apache.org/jira/browse/OAK-830
> Project: Jackrabbit Oak
> Issue Type: Bug
> Components: core
> Reporter: Alex Parvulescu
> Assignee: Thomas Mueller
> Fix For: 0.8
>
>
> There are some xpath queries that contain some 'or' clauses which are not
> properly converted to sql2:
> For example
> {code}
> /jcr:root/home//test/* [@type='t1' or @type='t2' or @type='t3']
> {code}
> turns into
> {code}
> 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 (name(a)
> = 'test' and isdescendantnode(a, '/home')) and b.[type] = 't1' or b.[type] =
> 't2') or b.[type] = 't3' /* xpath: /jcr:root/home//test/* [@type='t1' or
> @type='t2' or @type='t3'] */
> {code}
> Notice how the 3 'or's should be wrapped into parenthesis, otherwise the
> resulting query is simply wrong.
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