Re: [appengine-java] Re: JDO preview release : child object is still null !
Eventually, yes, but we felt that supporting basic inheritance was the more critical need so that's what got all the attention for 1.2.8. Polymorphic relations typically require either joins, discriminator columns, or both. We'd like to avoid all of that, and I think we can, but we have to wait until we make some changes to how we store relationship data in the physical model. That's the next major change we have planned. Polymorphic relationships will come after. Max On Wed, Nov 25, 2009 at 1:30 AM, Prashant wrote: > Is there any plan to support polymorphism in relationships? I tried it with > 1.2.8 pre-release, felt disappointed seeing it is not supported yet. I was > expecting it to be supported in 1.2.8 release. > > -- > 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 > google-appengine-j...@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com > . > For more options, visit this group at > http://groups.google.com/group/google-appengine-java?hl=en. > -- 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 google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
Re: [appengine-java] Re: JDO preview release : child object is still null !
Is there any plan to support polymorphism in relationships? I tried it with 1.2.8 pre-release, felt disappointed seeing it is not supported yet. I was expecting it to be supported in 1.2.8 release. -- 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 google-appengine-j...@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
[appengine-java] Re: JDO preview release : child object is still null !
Sorry, no docs on this yet, but if you're mixing inheritance and a one-to-one or a one-to-many relationship it's not going to work yet. Max On Tue, Oct 27, 2009 at 9:12 AM, Rick wrote: > > Is there a link describing the known issues (& fixes) with JDO & child > relationships? I think, I may be seeing the same problem. Thx. > > On Oct 26, 1:52 pm, "Max Ross (Google)" > > > > wrote: > > I intend to support that for the next release, yes. > > > > > > > > On Mon, Oct 26, 2009 at 1:03 PM, Prashant wrote: > > > what if i change the abstract class to a normal class? will it be > > > supported?? > > > --~--~-~--~~~---~--~~ 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 google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
[appengine-java] Re: JDO preview release : child object is still null !
Is there a link describing the known issues (& fixes) with JDO & child relationships? I think, I may be seeing the same problem. Thx. On Oct 26, 1:52 pm, "Max Ross (Google)" wrote: > I intend to support that for the next release, yes. > > > > On Mon, Oct 26, 2009 at 1:03 PM, Prashant wrote: > > what if i change the abstract class to a normal class? will it be > > supported?? --~--~-~--~~~---~--~~ 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 google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
[appengine-java] Re: JDO preview release : child object is still null !
I intend to support that for the next release, yes. On Mon, Oct 26, 2009 at 1:03 PM, Prashant wrote: > what if i change the abstract class to a normal class? will it be > supported?? > > > > > --~--~-~--~~~---~--~~ 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 google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
[appengine-java] Re: JDO preview release : child object is still null !
what if i change the abstract class to a normal class? will it be supported?? --~--~-~--~~~---~--~~ 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 google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
[appengine-java] Re: JDO preview release : child object is still null !
I'm expecting to have it in place by the next release, but anything related to relationships has been a beast to implement so it's possible it won't be done in time. I will say that it's unlikely I'll be able to add support for the specific example you've provided, where your parent has a reference to an abstract base class. This requires all sorts of additional work that is definitely out of scope for the next release. Max On Mon, Oct 26, 2009 at 12:31 PM, Prashant wrote: > Thanks for your quick response ! > > I really need to use this kind of relationship, i am expecting it to be > supported in the upcoming version, will it be? > > > > > --~--~-~--~~~---~--~~ 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 google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
[appengine-java] Re: JDO preview release : child object is still null !
Thanks for your quick response ! I really need to use this kind of relationship, i am expecting it to be supported in the upcoming version, will it be? --~--~-~--~~~---~--~~ 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 google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
[appengine-java] Re: JDO preview release : child object is still null !
Hi Prashant, thanks for trying out the preview release! It looks like you're trying to persist a relationship, and as I pointed out in the note announcing the availability of this release, only simple types and embedded types are currently supported, not relationship. So, I'm not surprised to hear you're seeing this behavior. It was not my intention to give anyone the impression that what you are trying to do should work, so if I gave you that impression I apologize. Max On Mon, Oct 26, 2009 at 2:18 AM, Prashant wrote: > Update: i test it on production server, child objects are not even getting > saved ! > > > > > --~--~-~--~~~---~--~~ 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 google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
[appengine-java] Re: JDO preview release : child object is still null !
Update: i test it on production server, child objects are not even getting saved ! --~--~-~--~~~---~--~~ 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 google-appengine-java@googlegroups.com To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en -~--~~~~--~~--~--~---
