[OAK-1432] Query: use "union" for complex XPath queries that use multiple "or"

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.17
• Assignee: Thomas Mueller
• Reporter: Thomas Mueller
• Created: 18/Feb/14 13:50
• Updated: 27/Feb/14 09:28
• Resolved: 20/Feb/14 07:19

Description

The following XPath query is converted to a union, however there is still an "or" in the converted query, which means the query still can't use all indexes and has to traverse the whole repository:

/jcr:root/a/b//element(*, nt:unstructured)[(
(@sling:resourceType = 'x' 
or @sling:resourceType = 'dam/collection') 
or @sling:resourceSuperType = 'dam/collection')]