[OAK-1336] Query: use "union" for complex XPath queries that use "or"

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.16
• Assignee: Thomas Mueller
• Reporter: Thomas Mueller
• Created: 20/Jan/14 07:12
• Updated: 01/Mar/16 08:00
• Resolved: 28/Jan/14 14:47

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:primaryType = 'nt:unstructured') 
and (@resources = '/data' or @resolved = '/data'))
or (@content = '/data' and (@jcr:primaryType = 'nt:folder'))) ] 

Issue Links

• relates to: OAK-904 Query: support "union" and "union all"