[ https://issues.apache.org/jira/browse/LUCENE-4768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Vadim Kirilchuk closed LUCENE-4768. ----------------------------------- Resolution: Won't Fix As i didn't came up with a more meaningful example, i am closing the issue. Thanks for your attention. > Child Traversable To Parent Block Join Query > -------------------------------------------- > > Key: LUCENE-4768 > URL: https://issues.apache.org/jira/browse/LUCENE-4768 > Project: Lucene - Core > Issue Type: Improvement > Components: core/query/scoring > Environment: trunk > git rev-parse HEAD > 5cc88eaa41eb66236a0d4203cc81f1eed97c9a41 > Reporter: Vadim Kirilchuk > Attachments: LUCENE-4768-draft.patch > > > Hi everyone! > Let me describe what i am trying to do: > I have hierarchical documents ('car model' as parent, 'trim' as child) and > use block join queries to retrieve them. However, i am not happy with current > behavior of ToParentBlockJoinQuery which goes through all parent childs > during nextDoc call (accumulating scores and freqs). > Consider the following example, you have a query with a custom post condition > on top of such bjq: and during post condition you traverse scorers tree > (doc-at-time) and want to manually push child scorers of bjq one by one until > condition passes or current parent have no more childs. > I am attaching the patch with query(and some tests) similar to > ToParentBlockJoin but with an ability to traverse childs. (i have to do weird > instance of check and cast inside my code) This is a draft only and i will be > glad to hear if someone need it or to hear how we can improve it. > P.s i believe that proposed query is more generic (low level) than > ToParentBJQ and ToParentBJQ can be extended from it and call nextChild() > internally during nextDoc(). > Also, i think that the problem of traversing hierarchical documents is more > complex as lucene have only nextDoc API. What do you think about making api > more hierarchy aware? One level document is a special case of multi level > document but not vice versa. WDYT? > Thanks in advance. -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org