You can perform an AND query on a ListProperty without a custom index.
I think it's called merge-join.
Have you tried InventoryItem.all().filter("keywords =",
keyword1).filter("keywords =", keyword2).filter(...) ?Julian http://www.memobuild.com On Sep 24, 3:56 am, jorge <jorge.velazq...@gmail.com> wrote: > It seems to me the only way to perform an AND query on a list property > (StringListProperty, for example) to match EVERY item in a list is to > define multiple indexes and use an equality filter (IN doesn't work in > this case because it performs an OR operation). For example, I'd like > my users to be able to perform keyword searches where I return items > that match all of their keywords. This resulted in me having to do > the following: > > - kind: InventoryItem > properties: > - name: in_stock > - name: keywords > - name: display_order > > - kind: InventoryItem > properties: > - name: in_stock > - name: keywords > - name: keywords > - name: display_order > > - kind: InventoryItem > properties: > - name: in_stock > - name: keywords > - name: keywords > - name: keywords > - name: display_order > > ...and so on. This gets a little ugly, and I'm not sure if this is > the recommended way to do this, but it's the only way I have been able > to get to work. Of course, I don't know up front how many keywords my > users are going to use. There is a generous index quota limit and > from the documentation it seems I can do up to 30 filters? I doubt > anyone would use that many keywords in a search, I could probably > safely stop at 10 indexes. > > Before I go down this path, I want to make sure there isn't another > (better?) option available to me. > > TIA -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to google-appeng...@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
