Java – why not throw an exception in objectify’s put() function?

The gae native put() function throws some exceptions when it fails

But objectify's put () function never throws any exceptions, as described in objectify Javadoc

This is my problem

If objectify's put() function does not throw an exception, how can I detect possible errors during the execution of the put() function?

Solution

Objectify's method will never swallow any native data store exceptions

However, some runtime exceptions are omitted from the API

In this case, objectify's put () method throws an exception that may be thrown by the put () method of the native data store

This problem related to the omitted runtime exception is submitted in the problem page of objectify (Reference: http://code.google.com/p/objectify-appengine/issues/list )