Re: [Boost-users] [Serialization]Can not export polymorphic types

Subject: Re: [Boost-users] [Serialization]Can not export polymorphic types
From: Steven Watanabe (watanabesj_at_[hidden])
Date: 2008-12-29 14:47:44

AMDG

Daniel Roberts wrote:
> I made my own test program similar to test_no_rtti.cpp, only simpler. 
> I have one base class and two classes that derive from it. All three 
> classes are registered using BOOST_CLASS_EXPORT. I create an instance 
> of each derived class and serialize them to an xml file. I then reload 
> the file and try to serialize to a base class pointer and an 
> "unregistered class" exception is thrown. I have stepped through my 
> code and most of the boost serialization code and can not find a 
> problem. The xml file looks good after creation but for some reason 
> boost can not serialize it in properly. I have attached my short 
> program. Can someone please tell me what I am doing wrong?
> Many thanks,

You're trying to write with
    testOutXML << boost::serialization::make_nvp("TestType1", pT1);
and read with
    testInXML >> boost::serialization::make_nvp("TestBase", pTB);

The names need to be the same.  e.g.
    testOutXML << boost::serialization::make_nvp("TestBase", pT1);
    testInXML >> boost::serialization::make_nvp("TestBase", pTB);

In Christ,
Steven Watanabe