Hi Mike, The best approach would be to run the query again indeed since the join is performed in a lossy way: we record score contributions but not which documents contributed to the score. For instance this is what the inner_hits feature of Elasticsearch does when used with query-time joins. On Fri, Nov 2, 2018 at 6:17 PM Michael Sokolov <msoko...@gmail.com> wrote: > > Hi List, I have a question about query-time joins as provided by > JoinUtil in the join package. As I understand it, the main documents > returned by the query will be those having a value in the to-field > that matches the value in the from-field of some documents returned by > the fromQuery. > > My question is whether it is possible to retrieve the docids of the > from-document(s) that contributed to the match of a given result > (to-document). The only way I can see how to do it is effectively to > re-run the fromQuery with the added constraint that the fromField > matches the values pulled from the result document's toField. But this > seems messy given that the work was already done in some sense while > executing the original query. I looked around but didn't see anything > that would be keeping track of these matches - did I miss it? Is there > a better approach than what I described? > > -Mike > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org >
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