Ah sorry I miss read. Not currently supported, it's a requested feature from Prolog that I haven't gotten around to implementing.
David On Thu, Nov 13, 2014 at 12:53 PM, Daniel Stone <dan.stone16...@gmail.com> wrote: > I'm not sure I fully understand, I guess I'm looking for the equivalent to a > sub query? When I tried to implement this early, I naively perhaps tried > something like this: > > (defn bars-for-foo > [?foo ?bars] > (l/== ?bars > (l/run* [?q] > (fooz ?foo ?q)))) > > This seems relevant: http://dev.clojure.org/jira/browse/LOGIC-68 > > > > On Thu, Nov 13, 2014 at 5:28 PM, David Nolen <dnolen.li...@gmail.com> wrote: >> >> There's no need to define the reverse relation - fooz can do it. Just >> supply bar and leave the foo fresh. >> >> David >> >> On Thu, Nov 13, 2014 at 12:26 PM, <dan.stone16...@gmail.com> wrote: >> > I think this is a dummy question, but wondering whether this is possible >> > in >> > core.logic? >> > >> > Lets say I have a set of relations >> > >> > (db-rel foo p) >> > (db-rel bar p) >> > (db-rel fooz p p2) >> > >> > and facts >> > [foo 1] >> > >> > [bar 2] >> > [fooz 2 1] >> > >> > [bar 3] >> > [fooz 3 1] >> > >> > See that the fooz relation is potentially describing bar as children of >> > foo's. (like a foreign key) >> > >> > and I want to unify with all the `bar`s for a given `foo` like so: >> > >> > (run* [?q] >> > (fresh [?foo ?bars] >> > (bars-for-foo ?foo ?bars) >> > (l/== {:foo ?foo >> > :bars ?bars} >> > ?q))) >> > => >> > >> > ({:foo 1, :bar (2 3)}) >> > >> > Is it possible to define bars-for-foo? >> > >> > >> > >> > >> > -- >> > You received this message because you are subscribed to the Google >> > Groups "Clojure" group. >> > To post to this group, send email to clojure@googlegroups.com >> > Note that posts from new members are moderated - please be patient with >> > your >> > first post. >> > To unsubscribe from this group, send email to >> > clojure+unsubscr...@googlegroups.com >> > For more options, visit this group at >> > http://groups.google.com/group/clojure?hl=en >> > --- >> > You received this message because you are subscribed to the Google >> > Groups >> > "Clojure" group. >> > To unsubscribe from this group and stop receiving emails from it, send >> > an >> > email to clojure+unsubscr...@googlegroups.com. >> > For more options, visit https://groups.google.com/d/optout. >> >> -- >> You received this message because you are subscribed to the Google >> Groups "Clojure" group. >> To post to this group, send email to clojure@googlegroups.com >> Note that posts from new members are moderated - please be patient with >> your first post. >> To unsubscribe from this group, send email to >> clojure+unsubscr...@googlegroups.com >> For more options, visit this group at >> http://groups.google.com/group/clojure?hl=en >> --- >> You received this message because you are subscribed to a topic in the >> Google Groups "Clojure" group. >> To unsubscribe from this topic, visit >> https://groups.google.com/d/topic/clojure/qtqzGaHQd2k/unsubscribe. >> To unsubscribe from this group and all its topics, send an email to >> clojure+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. > > > -- > You received this message because you are subscribed to the Google > Groups "Clojure" group. > To post to this group, send email to clojure@googlegroups.com > Note that posts from new members are moderated - please be patient with your > first post. > To unsubscribe from this group, send email to > clojure+unsubscr...@googlegroups.com > For more options, visit this group at > http://groups.google.com/group/clojure?hl=en > --- > You received this message because you are subscribed to the Google Groups > "Clojure" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to clojure+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
