Hi all, I need to collect some statistics on my entities in the datastore.
As an example, I need to know how many objects of a kind I have, how many objects with some properties setted to particular values, etc. In usual relational DBMS I may use SELECT COUNT(*) ... WHERE property=<some value> or SELECT MAX(*), ... GROUP BY property etc. But here I cannot see any of these structures. Moreover, I cannot take load all the objects in memory (e.g. using pm.getExtent(MyCall.class, false)) as I have too much entities (more than 100k). Do you know any trick to achieve my goal? Thank you very much! Best cghersi -- 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 [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-java?hl=en.
