It appears as though your filter is testing whether "oneLocation" and "oneCategory" are actually equal to the collections "locations" & "categories", respectively. I think what you mean to ask is whether the collections **contain** the keys in question:
... where locations.contains(oneLocation) && categories.contains(oneCategory) A Set<Key> will never (I hope) return true from equals(Object) when passing in a Key. See section 14.6.2 (beginning on p.167) of the JDO 3.0 specification for the filter specification. Page 170 lists the various methods supported JDOQL. You can find the specification at http://jcp.org/aboutJava/communityprocess/mrel/jsr243/index3.html -matthew On Jan 7, 5:24 am, Ravi Sharma <ping2r...@gmail.com> wrote: > Hi, > I have a entity like this > Class AdPost{ > ...few property > Set<Key> locations; > Set<Key> categories; > > } > > when i am running a query like > select AdPost where locations = oneLocation && categories == oneCategory > (pseudo code) > where oneLocation is one valid key of a location and oneCategory is a valid > key of one category. > > After running this i expect to get list of AdPost but it returns me null > and no error. > Is it allowed to run euqality on two collection property in same query? > > Thanks, > Ravi -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" group. To post to this group, send email to google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
