On Mon, Mar 14, 2011 at 1:12 PM, steph <preston....@gmail.com> wrote:
> given the following:
>
> message ClassA {
> required int value1 = 1;
> required int value2 = 2;
> optional ClassB value3 = 3;
> }
>
> message ClassB {
> required int value1 = 1;
> required int value2 = 2;
> }
>
>
> It states in the googleprotocol guide that an optional parameter is
> given a default value if it is not set, if it is a primative type it
> is that primitive types default state. However it does not specify
> what is the default state of a custom message.
>
> So my question is in my code I want to be able to tell if the my
> ClassA object had value3 set or not. Will it be set to null?
>
No, getting value3 will return an instance of ClassB in its default state.
To determine if value3 has been explicitly set, use has_value3().
>
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