To give the same answer as Alek with slightly different wording:
The accessors for extensions are analogous to the accessors for a normal
field. For a normal message-type field, there is no "set" accessor. There
is only "mutable". For example:
// Proto
message Foo {
optional Bar bar = 1;
}
message Bar {
optional int32 i = 1;
}
// C++
Foo foo;
foo.mutable_bar()->set_i(1);
So with extensions, you should not use SetExtension() for embedded
messages. You should use MutableExtension():
f.MutableExtension(Bar::ck)->set_offset(100);
On Thu, Jan 8, 2009 at 11:32 PM, chongyc <chongy...@gmail.com> wrote:
>
> I defined proto by following .
>
> message Ch {
> required int32 offset = 1;
> }
>
> message Foo {
> required string cmd = 1;
>
> extensions 1000 to max;
> }
>
> message Bar {
> extend Foo {
> required Ch ck = 1000;
> }
> }
>
> Then I generated c++ code from it.
> It's OK
>
> I am going to set value to extension ck()
> I compiled c++ source following below.
>
> term2relay::Foo f;
> term2relay::Bar b;
> term2relay::Ch c;
>
> c.set_offset (100);
>
> f.SetExtension(Bar::ck, c);
>
> But compiling failed in source code line
> f.SetExtension(Bar::ck, c);
>
> How to do it ?
>
> Please help me.
>
>
>
>
>
>
> >
>
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