Hello Having used the AppEngine services for a few months, I experienced the following facts concerning the NoSQL Datastore primary keys : - the exact nature of a Key is not obvious to everyone (although documented in each language-specific online doc). - the creation/modification of a Key is not trivial when it comes to AppIds and Namespaces, depending on what is exposed or not in each language-specific API.
FWIW, I've deployed the following page to help data extracting from, or encoding to a Key : http://datastore-key.appspot.com/ Example : http://datastore-key.appspot.com/?keystring=ag9zfmRhdGFzdG9yZS1rZXlyNQsSEk15UGFyZW50RW50aXR5VHlwZSIIZXVyb3BlLTQMCxIPTXlTdWJFbnRpdHlUeXBlGCoM It answers to two questions for debug and understanding purpose : - "What entity is refered to by this huge string dangling in my querystring/json/logs/hardcoded constants ?" - "What would be the string representation of a key of an entity in my application with specific id ?" The keys themselves are luckily language-independent, like all the Datastore content and the admin console pages. This online tool also provides nice links to the Datastore Viewer, and two browser search engines taking a Key string as search term. -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/google-appengine. For more options, visit https://groups.google.com/d/optout.
