[google-appengine] operating on too many entity groups in a single transaction.

Hello Group, I have googled for this error and as far as I can see, the Appengine Datastore does not support more than 5 Groups in a transaction (at least in a XG Transaction). OK ... but how do I get the the following issue done: *1. I am using OpenSeccionInView Pattern. See my code below:*

[google-appengine] Re: JPA @PrePersist does not work on a child :(

I fixed it. the solution is explained on my previous post: https://groups.google.com/forum/?hl=defromgroups#!topic/google-web-toolkit/p9p4_r2Gv4U Best regards: Nermin Am Dienstag, 4. Juni 2013 16:24:32 UTC+2 schrieb nermin@gmail.com: Hello Group, I have a probably simple problem with

[google-appengine] JPA @PrePersist does not work on a child :(

Hello Group, I have a probably simple problem with my application which I am obviously not able to solve. Two Classes: CompanyX, TradesmanX CompanyX stays in a OneToOne Connection with TradesmanX I use @PrePersist on Tradesman in order to pre-set some fields (e.g. Has password or set Account