ReferenceProperty vs Integer property

[Joops]

Hi all,

I just wanted to check if there is any down side to using an Integer
property instead of a reference property to model a relationship. (I
don't need the autogenerated collection property)

Thanks very much

J.

[Ernesto Oltra]

I'm already doing that. The only downside is ReferenceProperty stores the complete key path (app_id + parent + model + key_id + ...), while you will be storing only a part(key_id). If ancestor queries are not a problem for your app OR you can do them without needing the complete original key then you can simply use an Integer property.