@lhwong : I believe it is not possible to do a single query "across all tenants", if that is what you were looking for.
If you do not already have the names of your customers' namespaces (in your own meta-data tables), then you can use Ikai's link to get those names and make a count query once for each namespace. Also note that the meta-data queries can be a bit costly<http://code.google.com/appengine/docs/java/datastore/metadataqueries.html#Quota_Usage>. So, if you are not already storing namespaces, you might want to start doing that. Regards, R.Rajkumar On Sat, Dec 11, 2010 at 4:47 AM, Ikai Lan (Google) <[email protected]<ikai.l%[email protected]> > wrote: > It seems like what you want are metadata queries to get the names of > namespaces: > > http://code.google.com/appengine/docs/java/datastore/metadataqueries.html > > -- > Ikai Lan > Developer Programs Engineer, Google App Engine > Blogger: http://googleappengine.blogspot.com > Reddit: http://www.reddit.com/r/appengine > Twitter: http://twitter.com/app_engine > > > > On Thu, Dec 9, 2010 at 9:08 PM, Nick <[email protected]> wrote: > >> Hi, >> >> I have a multitenancy application with tenants creating their own contents >> and store them in datastore using different namespaces. I'd like to analyze >> data across tenants, for example total number of contents created. Can this >> be done? If yes, what is the namespace to be used to access the data across >> all tenants? >> >> Thanks, >> --Wong Liong Hung >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Google App Engine" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<google-appengine%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/google-appengine?hl=en. >> > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-appengine%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-appengine?hl=en. > -- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ http://crm.ifreetools.com -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
