[google-appengine] Parent, childs and ancestor is

2011-05-09 Thread Pau
Hi, I create a hirarchy data in datastore using parents. For example: A ... childs : B, C B ... childs : D, E C ... childs : F, G Now, I would like select childs of A using ANCESTOR IS, but the query return all descendants (B, C, D, E, F and G). Do you know how I can retrieve only the direct chi

Re: [google-appengine] Parent, childs and ancestor is

2011-05-10 Thread Cesare Montresor
Hi Pau, if I understood correctly, your entities are connected by using reference properties. B  ref -> A C ref -> A D ref -> B E ref -> B etc etc In this case you should be able to get his direct childs in a very cheap way, buy using the the implicit proprieties created on the entity A (search:"

Re: [google-appengine] Parent, childs and ancestor is

2011-05-10 Thread Robert Kluin
Hi Pau, If you are using entity groups, you'll need to add a reference property (or some similar idea) so that you can query for 'direct' descendants, 'B' and 'C', of 'A'. Robert On Mon, May 9, 2011 at 18:05, Pau wrote: > Hi, I create a hirarchy data in datastore using parents. For examp

Re: [google-appengine] Parent, childs and ancestor is

2011-05-10 Thread Pau
Thank you for your help! -- 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-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. F

Re: [google-appengine] Parent, childs and ancestor is

2011-05-11 Thread Magghu India
Be more specific so that it can be analysed better Regards, Mani For Technical Help visit at http://www.magghu.com On Tue, May 10, 2011 at 3:35 AM, Pau wrote: > Hi, I create a hirarchy data in datastore using parents. For example: > A ... childs : B, C > B ... childs : D, E > C ... childs : F