Hi Greg, I’m assuming we have one match-set which was not constrained by any of the categories we want to aggregate over, so it may have books by Mark Twain, books by American authors, and sci-fi books.
Maybe we can imagine we obtained it by searching for a keyword, say “Washington”, which is present in Mark Twain’s writing, and those of other American authors, and in sci-fi novels too. Does that make the example clearer? Stefan On Sat, 11 Feb 2023 at 00:16, Greg Miller <gsmil...@gmail.com> wrote: > > Hi Stefan- > > Can you clarify your example a little bit? It sounds like you want to facet > over three different match sets (one constrained by "Mark Twain" as the > author, one constrained by "American authors" and one constrained by the > "sci-fi" genre). Is that correct? > > Cheers, > -Greg > > On Fri, Feb 10, 2023 at 11:33 AM Stefan Vodita <stefan.vod...@gmail.com> > wrote: > > > Hi all, > > > > Let’s say I have an index of books, similar to the example in the facet > > demo [1] > > with a hierarchical facet field encapsulating `Genre / Author’s > > nationality / > > Author’s name`. > > > > I might like to find the latest publish date of a book written by Mark > > Twain, the > > sum of the prices of books written by American authors, and the number of > > sci-fi novels. > > > > As far as I understand, this would require faceting 3 times over the > > match-set, > > one iteration for each aggregation of a different type (max(date), > > sum(price), > > count). That seems inefficient if we could instead compute all > > aggregations in > > one pass. > > > > Is there a way to do that? > > > > > > Stefan > > > > [1] > > https://javadoc.io/doc/org.apache.lucene/lucene-demo/latest/org/apache/lucene/demo/facet/package-summary.html > > > > --------------------------------------------------------------------- > > 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
