Entities used to serialize data have changed. How can the serialized data be upgraded for the new entities?
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Published on 2011-01-14T19:00:54Z
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2011/01/15
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Hi,
I have a bunch of simple entity instances that I have serialized to a file. In the future, I know that the structure of these entities (ie, maybe I will rename Name to Header or something). The thing is, I don't want to lose the data that I have saved in all these old files. What is the proper way to either
- load the data from the old entities into new entities
- upgrade the old files so that they can be used with new entities
Note: I think I am stuck with binary serialization, not xml serialization.
Thanks in advance!
Edit: So I have an answer for the case I have described. I can use a dataContractSerializer and do something like
[DataMember("bar")]
private string foo;
and change the name in the code and keep the same name that was used for serialization. But what about the following additional cases:
- The original entity has new members which can be serialized
- Some serialized members that were in the original entity are removed
- Some members have actually changed in function (suppose that the original class had a FirstName and LastName member and it has been refactored to have only a FullName member which combines the two)
To handle these, I need some sort of interpreter/translator deserialization class but I have no idea what I should use
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