Hello there, this is maybe the most stupid question ever but I am wondering if it is possible to do an update to the datastore without reading the entity first.
I am trying to keep my reads/writes operation as low as possible and after a huge optimization which I have done in memcache I would like to implement an update to existing entity without reading it first. Until now I basically just load the entity from the database using its key (converted from my entity id) and then set the attribute and persisted back to datastore. I am wondering what would be the best approach here: 1) I assume there is now alternative to SQL syntax aka "update entity set attribute = :value where id = :id" 2) so should I read the entity just by key through small datastore operation (I assume this is going to load an empty entity with the key only) and then set my attribute I would like to change and then normally persist? Is it going to delete all unpopulated attribute in this entity or just update the one I set? Or is this just totally dumb and not going to work at all? 3) is there any other way how to do this? Thank you and sorry again if I missed something really obvious here! -- 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. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
