I'm a bit confused:
Following some examples and looking at the API of the DatastoreService
it seems to be required to use the overloaded methods whenever transactional
behavior is required.
In other words: The current transaction needs to be specified on put() und
get() methods like this:
Transaction txn = datastore.beginTransaction();
// ....
Entity employee = datastore.get(txn, employeeKey);
employee.setProperty("vacationDays", 10);
datastore.put(txn, employee);
txn.commit();
But when looking at the official Google docs, there seems to be no need for
specifying the
transaction explicitly:
http://code.google.com/intl/de-DE/appengine/docs/java/datastore/transactions.html
?
Can someone explain this? Is this an issue with "implicit transaction"
behavior? How does it work?
Thanks a lot
Mos
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