Your query as written is testing for whether oneLocation is equal to locations and oneCategory is equal to categories. That will never be true (I hope), because a Set<Key> will never equal a Key. What you mean is are they **contained by** their respective collections:
select AdPost where locations.contains(oneLocation) && categories.contains(oneCategory) See section 14.6.2 (p.167) of the JDO 3.0 specification, covering JDOQL filter expressions. Page 170 contains a table of the methods allowed in JDOQL. The JDO 3.0 specification can be downloaded from 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.
