(this would be a great thread for a Google Wave - the topic is focused, but there are a lot of mini-conversations that need to be had - incidentally I have free invites)
On Wed, Nov 25, 2009 at 12:13 PM, Bassil Karam <[email protected]> wrote: > Vince, thanks a lot for these insights. What is the difference between > "completely > replac[ing] an existing User object" and simply updating some or all of its > property values? Are you referring to the structure (signature) of the cfc? > > Baz > > > On Wed, Nov 25, 2009 at 12:06 PM, Vince Bonfanti <[email protected]>wrote: > >> 1) You should do a read-update-write to update the User object (see my >> previous message). >> >> 2) Again, I'd recommend doing a read-update-write to update the User >> object. However, if you want to completely replace an existing User object >> and you know the "kind" and "keyName", then you could create a new User >> object and then do: >> >> GoogleWrite( User, kind, keyName ); >> >> This would have the effect of completely overwriting any existing User >> object with the same kind/keyName. >> >> Vince >> >> >> On Mon, Nov 16, 2009 at 4:18 AM, Rainer <[email protected]> wrote: >> >>> >>> Vince, >>> >>> Coul you please clarify me on this subject, I don't get 'the circle >>> closed'. >>> >>> When I follow the documentation at >>> http://wiki.openbluedragon.org/wiki/index.php/GoogleAppEngine:Datastore, >>> I can't seem to make a closing structure of my logic. >>> >>> 1) When I choose to go for the googleKey (which I higly prefer, >>> because it's generated by the datastore), I do the following: >>> - create an object from my User.cfc (bean); User = CreateObject >>> ('component','model.user.User').init() >>> - write it to the datastore; googleKey = GoogleWrite(User); >>> - read from the datastore; User = googleRead(googleKey); >>> - get list of users; aUsers = GoogleQuery('select from User') >>> But what if I have a the details of a user in a form (with the >>> googleKey in a hidden input), and I post this form. >>> How do I than create a User object that 'knows' the googleKey so that >>> a GoogleWrite() will update an exisiting object in the datastore? >>> Should I first do a 'User = googleRead(googleKey)' and than update the >>> properties with my form properties, and than 'GoogleWrite(User)'? >>> Or can I set the googleKey in my User object with a 'setGoogleKey()' >>> function, or something like that? >>> >>> 2) When I choose to go for the combination kind/keyName, I do the >>> following: >>> - create an object from my User.cfc (bean); User = CreateObject >>> ('component','model.user.User').init(kind,keyName) >>> - write it to the datastore; GoogleWrite(User,kind,keyName); >>> - read from the datastore; User = googleRead(kind,keyName); >>> - get list of users; aUsers = GoogleQuery('select from User'); >>> But what if I have a the details of a user in a form (with the kind >>> and keyName in a hidden input), and I post this form. >>> How do I than create a User object that 'knows' the the kind and >>> keyName so that a GoogleWrite() will update an exisiting object in the >>> datastore? Should I first do a 'User = googleRead(kind,keyName)' and >>> than update the properties with my form properties, and than >>> 'GoogleWrite(User)'? >>> Or can I set the kind and keyName in my User object with 'setGoogleKind >>> () and setGoogleKeyName()' functions, or something like that? >>> >>> Maybe, I am overseeing something very badly, but after read the doc a >>> couple of time, and trying some different code, I coul not come up >>> with a solution. >>> >>> Thank you in advance for helping me out, >>> >>> Rainer. >>> >>> -- >> Open BlueDragon Public Mailing List >> http://www.openbluedragon.org/ http://twitter.com/OpenBlueDragon >> mailing list - http://groups.google.com/group/openbd?hl=en >> >> !! save a network - please trim replies before posting !! >> > > -- Open BlueDragon Public Mailing List http://www.openbluedragon.org/ http://twitter.com/OpenBlueDragon mailing list - http://groups.google.com/group/openbd?hl=en !! save a network - please trim replies before posting !!
