Extensions are not quite like inheritance. The way I think of an extension
is that it is like an ordinary field except with the dependency inverted,
so that the field depends on the message rather than the message depending
on the field.
I haven't worked with the C# implementation, but as I understand the
generated code should include a static pb::Extension variable called Plot
(or similar), which you can use to get or set the extension on a GroupPlot
message. Here are some examples from the unit tests:
https://github.com/protocolbuffers/protobuf/blob/d13afed5639727c3c52d302ddfb3a0a04e21eb74/csharp/src/Google.Protobuf.Test/GeneratedMessageTest.Proto2.cs#L116
On Mon, Aug 2, 2021 at 9:58 PM Geervani BS wrote:
> Hello All,
>
> I have a message as below:
>
> message DynamicGroupPlot
> {
> extend GroupPlot {
> optional DynamicGroupPlot plot = 100;
> }
>
> repeated int32 line = 1
> optional bool overlay = 5;
> optional bool tdc_shift = 6;
> optional bool smoothing = 7;
> optional bool valve_events = 8;
> optional bool theoretical = 9;
> }
>
>
> I am using c# compiler. With extends what I understood is, it will create
> a mapping between DynamicGroupPlot and GroupPlot i.e some kind of
> inheritance. But the generated .cs files doesn't show any relationship
> between DynamicGroupPlot and GroupPlot .
>
> Here is the snippet from generated .cs file
>
> public sealed partial class DynamicGroupPlot :
> pb::IMessage
>
> {
> .
> .
> .
> [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
> public DynamicGroupPlot() {
> OnConstruction();
> }
>
> partial void OnConstruction();
>
> [global::System.Diagnostics.DebuggerNonUserCodeAttribute]
> public DynamicGroupPlot(DynamicGroupPlot other) : this() {
> _hasBits0 = other._hasBits0;
> line_ = other.line_.Clone();
> dynamicType_ = other.dynamicType_;
> phasing_ = other.phasing_;
> autoscale_ = other.autoscale_;
> overlay_ = other.overlay_;
> tdcShift_ = other.tdcShift_;
> smoothing_ = other.smoothing_;
> valveEvents_ = other.valveEvents_;
> theoretical_ = other.theoretical_;
> _unknownFields = pb::UnknownFieldSet.Clone(other._unknownFields);
> }
>
>
> I am new to protobuf. Any help is much appreciated.
>
>
> Regards
> Geervani
>
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> .
>
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