I've noticed this *get_value_for_datastore* method being used in one of Nick's blog posts, where it has been used for more effective fetching, and I wonder whether there is a Java counterpart...? (I googled it a bit, fruitlessly.)
Regrds J. Záruba On Wed, May 5, 2010 at 6:48 AM, Robert Kluin <[email protected]> wrote: > I use the get_value_for_datastore method. I usually add a method like > 'userKey' to the model so that I can say: if article.userKey() != > user.key() > > See: > http://code.google.com/appengine/docs/python/datastore/propertyclass.html > > and/or > > > http://appengine-cookbook.appspot.com/recipe/getting-dbreferenceproperty-key-without-loading-entity > > > Robert > > > On Tue, May 4, 2010 at 7:03 PM, Blixt <[email protected]> wrote: > > Hey! Isn't there a more convenient way to do the following? > > > > if article._entity['user'] != user.key(): > > > > "article" in the above is an instance of the model Article, which has > > the property "user" which is a ReferenceProperty to the model User > > (which "user" is an instance of). If I try to do "if article.user != > > user" it tries to fetch the User instance for the article, despite > > there being no need to do so. > > > > /Blixt > > > > -- > > 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]<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=en.
