Perhaps you could post a minimal example of the two datasets you're trying to join ?
To do multiple types of joins (left, right, inner, natural & cross) on collections of maps/records, I use Sean Devlin's table-utils library. There's no jar, but there's instructions on how to make a version without dependencies other than Clojure in this stackoverflow question<http://stackoverflow.com/questions/13009939/outer-join-in-clojure/13032032#13032032> . On Tuesday, July 16, 2013 4:43:21 PM UTC+2, mond wrote: > > Sorry if this is a RTFM style question ... this is what I have in terms of > types and was wondering if there is another form of join or another library > / collection combination that can achieve the same relational join? > > Thanks in advance, > > Ray > > check-delta-feeds.core=> (def changed-records (map find-changed-records > (set/select #(= (:entity %) (entity-names :project)) query-parts))) > > #'check-delta-feeds.core/changed-records > check-delta-feeds.core=>check-delta-feeds.core=> > check-delta-feeds.core=> (def feed-entries (obtain-feed-entries > (fetch-atom-feed-until tgb-feed-url until-datetime))) > #'check-delta-feeds.core/feed-entries > check-delta-feeds.core=> (type changed-records ) > clojure.lang.LazySeq > check-delta-feeds.core=> (type feed-entries) > clojure.lang.LazySeq > check-delta-feeds.core=> (set/join changed-records feed-entries {:ID > :dh-uuid}) > ClassCastException clojure.lang.LazySeq cannot be cast to java.util.Map > clojure.lang.RT.find (RT.java:733) > > > > -- -- 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/groups/opt_out.
