Hello Aurélien, I believe the approach you described is what Elasticsearch is taking with nested documents, in addition to indexing parent and child documents in a single block. See the "sidebar" at the bottom of [1] and the sections labeled "nested" of [2] for more details.
Michael's blog post on BlockJoinQuery [3] is also relevant in this regard. [1] http://www.elasticsearch.org/guide/en/elasticsearch/reference/current/mapping-nested-type.html [2] http://www.elasticsearch.org/blog/managing-relations-inside-elasticsearch/ [3] http://blog.mikemccandless.com/2012/01/searching-relational-content-with.html On Mon, Oct 20, 2014 at 9:43 PM, Aurélien MAZOYER < aurelien.mazo...@francelabs.com> wrote: > Hi again, > > Maybe the only way to do this is to use nested documents and to index data > both in child documents and in flattened form in the parent document. Then > we can run the two different queries. > > Any other (better) idea? > > Regards, > > Aurélien > > Le 20/10/2014 13:40, aurelien.mazo...@francelabs.com a écrit : > > >> Hi, >> >> I have question regarding nested document queries: >> For example, let’s say that I have the following book: >> Book _title: Nested document for dummies >> Chapter1_Title: Introduction >> Chapter1_Content: Nested documents are fun. >> Chapter2_Title: Which technology should I use? >> Chapter2_Content: Lucene of course! >> >> First I want to find books that contain an introduction and that are >> about Lucene. So I decide to flatten my data and use 3 multivalued fields >> (Book_Title,Chapter_Title and Chapter_Content), I index my document and >> then I get what I want when I use the following query : “ >> chapter_title:Introduction AND chapter_title:Lucene “ >> Now I want to find books that contain “fun” in a chapter called >> “introduction”. My model is no more valid (Chapter2_content is no more >> linked with Chapter2_title). That is why I change my datamodel and use >> nested documents: >> I have now a parent with a single valued field Book_title and different >> childs with single valued fields Chapter_title and Chapter_Content. Now, >> when I run the query “chapter_title: Introduction AND chapter_content:fun” >> I also get what I want… But what do I have to do if I want to use these two >> kinds of query with a unique data model? >> >> Thank you, >> >> >> Regards, >> >> Aurélien MAZOYER >> >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org >> For additional commands, e-mail: java-user-h...@lucene.apache.org >> >> > > --------------------------------------------------------------------- > To unsubscribe, e-mail: java-user-unsubscr...@lucene.apache.org > For additional commands, e-mail: java-user-h...@lucene.apache.org > >
