One thing that might help is to use a FieldMask
<https://github.com/google/protobuf/blob/8aa927f08f6b92808976b0c22fa4a45850279987/src/google/protobuf/field_mask.proto#L42>,
since that can essentially represent the kind of path string you mentioned.
You can then use FieldMaskUtil::MergeMessageTo
<https://github.com/google/protobuf/blob/8aa927f08f6b92808976b0c22fa4a45850279987/src/google/protobuf/util/field_mask_util.h#L124>
to update just the fields identified by the field mask.
On Thu, Apr 13, 2017 at 8:25 PM, Trung Hoang Nguyen <
hoangtrung88....@gmail.com> wrote:
> Hi everyone,
>
> I'm newbie of Google buffer protocol, and now I have an issue as below:
> I have a path string and value like that:
>
>> path_string = "classA.classB.classC.foo_variable ";
>> set_value = 1000;
>
>
> a common set function:
>
>> void set(path_string, set_value);
>
>
> and some messages:
>
> message classA {
>> ...
>> classB = 1;
>> }
>> message classB {
>> ...
>> classC =1;
>> }
>> message classC {
>> ...
>> int foo_variable = 10;
>> }
>
>
> Now with the path_string I need to find out the foo_variable and set its
> value to 1000.
> How can I do it with google buffer protocol?
>
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