[jira] [Created] (OAK-5413) XPath: "union" combined with "or" is not converted correctly

["Thomas Mueller (JIRA)" <ji...@apache.org>]

Thomas Mueller created OAK-5413:
-----------------------------------

             Summary: XPath: "union" combined with "or" is not converted correctly
                 Key: OAK-5413
                 URL: https://issues.apache.org/jira/browse/OAK-5413
             Project: Jackrabbit Oak
          Issue Type: Bug
          Components: query
            Reporter: Thomas Mueller
            Assignee: Thomas Mueller
             Fix For: 1.5.17


In OAK-4265 a limited form of "union" for XPath was added. However, union queries that contain "or" are not converted properly. For example:

{noformat}
//*[@a=1 or @b=1]
select [jcr:path], [jcr:score], * from [nt:base] as a where [a] = 1 
union select [jcr:path], [jcr:score], * from [nt:base] as a where [b] = 1
{noformat}

but

{noformat}
(//*[@a=1 or @b=1] | //*[@c=1])
select [jcr:path], [jcr:score], * from [nt:base] as a where [a] = 1 or [b] = 1 
union select [jcr:path], [jcr:score], * from [nt:base] as a where [c] = 1
{noformat}

It should be converted to:

{noformat}
select [jcr:path], [jcr:score], * from [nt:base] as a where [a] = 1 
union select [jcr:path], [jcr:score], * from [nt:base] as a where [b] = 1 
union select [jcr:path], [jcr:score], * from [nt:base] as a where [c] = 1 
{noformat}




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