There is information on this here: http://stackoverflow.com/questions/141973/how-do-i-get-the-key-value-of-a-dbreferenceproperty-without-a-database-hit
On Tue, Nov 18, 2008 at 11:47 AM, jhofmann <[EMAIL PROTECTED]> wrote: > > I am making an app which will store files (relatively large ones, but > within the 1MB size limit) in the datastore. To make it possible to > gain information about the files without downloading them I have > separated their information into two models: Doc and DocData, where > Doc contains metadata and DocData contains the file. Doc contains a > reference property to DocData. > > I want to get the key from the DocData reference and let the client > use that to make a second http request that gets only DocData(thus > avoiding the problem of any one request being too large). But I am > concerned that the syntax "doc.docdataref.key()" is actually going to > load DocData to get the key instead of using the reference. Someone > please clear me up on the best way to ensure that I'm not loading > DocData unnecessarily. > > > > --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
