Re: [Boost-users] [Serialization] Deserialization of base class fails

Subject: Re: [Boost-users] [Serialization] Deserialization of base class fails
From: Robert Ramey (ramey_at_[hidden])
Date: 2014-10-25 12:47:53

Torsten Wylegala wrote
> But if I serialize the derived class "RequestPackage" and 
> try to deserialize it into the base-class "Package" (Example 2) I'm 
> getting an "input stream error" exception while trying to deserialize 
> with ia >> BOOST_SERIALIZATION_NVP(*package);.

You can't do this.  the class loaded must be the exact class saved.

> Background information: I want to use xml-serialized objects for data 
> exchange via network and want all the packages to inherit from 
> Package-class which carries "packageId" and therefore give me the chance 
> to identify the incoming xml-objects and handle every package based on 
> this id.

a very common scenario.  Look more carefully in the documentation.
Look a tests - e.g. test_base_class. 
Also there are examples.

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