The type of p1, p2 and sth is datetime. Can you give me some examples of 'ancestor queries'? If possible, I'd like to change the existing ones into 'ancestor queries' and fit the whole into a transaction, because that is exactly what a transaction designed for.
Thanks, Will On Mon, Nov 9, 2009 at 6:58 PM, Nick Johnson (Google) < [email protected]> wrote: > Hi Will, > > As the error message says, the only queries you can execute inside a > transaction are ancestor queries. You need to execute the query outside the > transation then, if necessary, check the preconditions still hold inside the > transaction. > > -Nick Johnson > > > On Sun, Nov 8, 2009 at 4:04 AM, Will <[email protected]> wrote: > >> Hi all, >> >> I got this error when I tried to run a query in a transaction, "Only >> ancestor queries are allowed inside transactions". >> >> I have a class, C1, whose entities have no ancestors. I want to query a >> particular entity from it, modify, and put it back, for example, >> >> item = C1.gql("WHERE p1 = :a AND p2 = :b ORDER BY p2", a = None, b = >> 23).fetch(1) >> item.p1 = sth >> item.put() >> >> The above code should run in a transaction. What should I do? >> >> Thanks in advance. >> >> Will >> >> >> >> >> > > > -- > Nick Johnson, Developer Programs Engineer, App Engine > Google Ireland Ltd. :: Registered in Dublin, Ireland, Registration Number: > 368047 > > --~--~---------~--~----~------------~-------~--~----~ > > 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]. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=.
