Serialization and Versioning

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Original post by yaroslavd
1. Make SinceAttribute and DeprecatedSinceAttribute attribute classes that accept an (int version) parameter in the constructor.

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2. Tag all class members that I want to record with these attributes as needed. For example, if CurrentVersion of the class is 6, and I want to add a member to this class, I''ll change CurrentVersion to 7, add the member, and tag the member with [Since(7)].

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3. Make all saveable/loadable classes implement this interface:

public interface IRecordable
{
  IRecordable(SerializationInfo info, StreamingContext context); //Don''t know if I can do this. Just let me know if I can''t.
  String name {get;set};
  int CurrentVersion {get};
}  

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4. Make all saveable/loadable classes implement ISerializable.

5. In GetObjectData(), record CurrentVersion first, and then all the members whose SinceAttribute is <= CurrentVersion and whose DeprecatedSinceAttribute is > CurrentVersion.

6. In Constructor(SerializationInfo info, StreamingContext context), read in CurrentVersion first, and then all the members whose SinceAttribute is <= CurrentVersion and whose DeprecatedSinceAttribute is > CurrentVersion.

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3. Make all saveable/loadable classes implement this interface:

public interface IRecordable
{
  IRecordable(SerializationInfo info, StreamingContext context); //Don''t know if I can do this. Just let me know if I can''t.
  String name {get;set};
  int CurrentVersion {get};
}   

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IIRC, interfaces can''t have member fields. What you need is a base class. But I don''t understand why you want to do IRecordable, anyway.

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