Hi Bartosz;
At the moment, it only supports the reflection/attribute based approach
(directly comparably to the [KnownType] attribute used in vanilla WCF /
DataContractSerializer). I have some plans and prototype code to rectify
this (runtime models), but it is lots of work, and it isn't anything I can
promise on any fixed timescale I'm afraid.
In order to shim inheritance into the protocol buffers format (without doing
anything /too/ evil) it needs to know a unique tag per subclass. I can't
help thinking that the most pragmatic option here is just to add a few
attributes. Hunting for subclasses on the fly would be messy, and I can't
include the type metadata without breaking completely from the standard
protocol buffers wire format.
Marc Gravell
(protobuf-net)
2009/12/10 Bartosz Pierzchlewicz <bar...@extranet.one.pl>
> Hello,
>
> I have two classes:
>
> [DataContract]
> public class TestClass: Base<TestClass>
> {
> [DataMember(Order = 1)]
> public string Str { get; set; }
> }
>
> [DataContract]
> [ProtoInclude(1,typeof(TestClass))]
> public class Base<T>
> {
> [DataMember]
> public T ReturnType { get; set; }
> }
>
> I know, that I must use ProtoInclude attribute to allow serialization.
>
> Problem is, that I have about 100 classes that inherit from Base
> class, and I should write 100 attributes.
> Is any possibility to add this information not using Attribute on
> class but programmatically?
>
> In DataContractSerializerOperationBehavior when you override method
> CreateSerializer you may write code to add your own list of known
> types.
>
> But.. ProtoInclude has not only information about type but also tag.
>
>
> can anyone help?
>
> Bartosz Pierzchlewicz
>
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Regards,
Marc
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