Question

i have a class like:

class myclass{
    Long id;
    String a;
    Text b;
}

in the examples in the documentation for appengine, to update an object, we must recover it from the DataStore, modify it and then close the PersistenceManager.
what if i overwrite it without recover it from the DataStore?
i have that object cached, so i have your id and others properties

Answer 1

You can overwrite it directly without first loading the previous values. (Blind Update)

However, this does not work if you need to know these old values, for example in a partial update of only certain fields.