CODEWITHSUNDEEP
pythongoogle-app-engine
Pwnna
Pwnna

Reputation: 9538

Google App Engine Key Class

What exactly is google app engine's key class? I'm looking at the documentation but it's not really helping. (Python)

Upvotes: 2

Views: 360

Answers (1)

Robert Kluin
Robert Kluin

Reputation: 8292

Every entity has either an integer id or a name (string) that uniquely identifies it. The key is made up of four basic parts: your app id, the namespace, the kind name, and the integer id or name. If an entity is a child entity (ie a member of an entity group) the key also contains the parent's kind and id / name.

So a key looks something like this: AppId:Namespace:[parent Kind:id|name:]Kind:id|name

Keys are discussed in the context of entity groups, and there is a description in the article about how entities are stored.

Upvotes: 2

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