[jira] [Updated] (OAK-7109) rep:facet returns wrong results for complex queries

["Dirk Rudolph (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/OAK-7109?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dirk Rudolph updated OAK-7109:
------------------------------
    Attachment: facetsInMultipleRoots.patch

> rep:facet returns wrong results for complex queries
> ---------------------------------------------------
>
>                 Key: OAK-7109
>                 URL: https://issues.apache.org/jira/browse/OAK-7109
>             Project: Jackrabbit Oak
>          Issue Type: Bug
>          Components: lucene
>    Affects Versions: 1.6.7
>            Reporter: Dirk Rudolph
>         Attachments: facetsInMultipleRoots.patch
>
>
> Complex queries in that case are queries, which are passed to lucene not containing all original constraints. For example queries with multiple path restrictions like:
> {code}
> select [rep:facet(simple/tags)] from [nt:base] as a where contains(a.[*], 'ipsum') and (isdescendantnode(a,'/content1') or isdescendantnode(a,'/content2'))
> {code}
> In that particular case the index planer gives ":fulltext:ipsum" to lucene even though the index supports evaluating path constraints. 
> As counting the facets happens on the raw result of lucene, the returned facets are incorrect. For example having the following content 
> {code}
> /content1/test/foo
>  + text = lorem ipsum
>  - simple/
>   + tags = tag1, tag2
> /content2/test/bar
>  + text = lorem ipsum
>  - simple/
>   + tags = tag1, tag2
> /content1/test/bar
>  + text = lorem ipsum
>  - simple/
>    + tags = tag1, tag2
> {code}
> the expected result for the dimensions of simple/tags and the query above is 
> - tag1: 2
> - tag2: 2
> as the result set is 2 results long and all documents are equal. The actual result set is 
> - tag1: 3
> - tag2: 3
> as the path constraint is not handled by lucene.
> To workaround that the only solution that came to my mind is building the DNF of my complex query and executing a query for each of the disjunctive statements. As this is expanding exponentially its only a theoretical solution, nothing for production. 



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