Hi, thank you very much for your answer. I was stuck with this problem for days. I have changed the code so that a const pointer is now passed to the RemoteMessagingSystem::serialize: string RemoteMessagingSystem::serialize (Message* const msg) { ... } But the problem with deserialize is still there: In file included from /home/v0d0i/libraries/boost_1_42_0/include/boost/archive/xml_iarchive.hpp:24, from message/remote/RemoteMessagingSystem.h:31, from message/remote/RemoteMessagingSystem.cpp:1: /home/v0d0i/libraries/boost_1_42_0/include/boost/archive/basic_xml_iarchive.hpp: In member function ‘void boost::archive::basic_xml_iarchive<Archive>::load_override(T&, int) [with T = Message*, Archive = boost::archive::xml_iarchive]’: /home/v0d0i/libraries/boost_1_42_0/include/boost/archive/xml_iarchive.hpp:80: instantiated from ‘void boost::archive::xml_iarchive_impl<Archive>::load_override(T&, int) [with T = Message*, Archive = boost::archive::xml_iarchive]’ /home/v0d0i/libraries/boost_1_42_0/include/boost/archive/detail/interface_iarchive.hpp:61: instantiated from ‘Archive& boost::archive::detail::interface_iarchive<Archive>::operator>>(T&) [with T = Message*, Archive = boost::archive::xml_iarchive]’ message/remote/RemoteMessagingSystem.cpp:164: instantiated from here /home/v0d0i/libraries/boost_1_42_0/include/boost/archive/basic_xml_iarchive.hpp:70: error: no matching function for call to ‘assertion_failed(mpl_::failed************ boost::serialization::is_wrapper<Message*>::************)’ make[1]: *** [RemoteMessagingSystem.o] Error 1 make[1]: Leaving directory `/home/v0d0i/workspace/trunk1/src/base' make: *** [all-recursive] Error 1 Here is the code fragement: Message* RemoteMessagingSystem::deserialize (string data) { stringstream archivStream (data, ios_base::binary | ios_base::in); #ifdef REMOTE_XML boost::archive::xml_iarchive inputArchive( archivStream ); #else boost::archive::binary_iarchive inputArchive( archivStream ); #endif Message* msg = NULL; //line 164 inputArchive >> msg; return msg; } Should I also change here Message* to Message* const? Actually it is something strange because with the old versoin Boost 1.38 there are no compiling errors. Since i compiled and installed the new version 1.42 i got those errors. Something should be changed between the 2 versions although i have compared the both source codes but do not find any difference :/ Regards, Binh Matthias Troyer-2 wrote:
On 3 Mar 2010, at 00:44, Binh Luong wrote:
Hi,
Matthias Troyer-2 wrote:
You should not have to define your class as a wrapper. Can you send the code fragment that causes the problem?
Matthias _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users
here are the code segments that cause the problem: As you see in the last message, there are errors in RemoteMessagingSystem.cpp:147 and RemoteMessagingSystem.cpp:147. They are the following 2 functions which serializes the obj Message to xml archive and deserializes xml archive backwards to obj Message.
string RemoteMessagingSystem::serialize (Message* msg) { stringstream archiveStream (ios_base::binary | ios_base::out); { #ifdef REMOTE_XML boost::archive::xml_oarchive outputArchive( archiveStream ); #else boost::archive::binary_oarchive outputArchive( archiveStream ); #endif //REMOTE_XML outputArchive & msg; //line 147 }
string data = archiveStream.str(); return data; }
Message* RemoteMessagingSystem::deserialize (string data) { stringstream archivStream (data, ios_base::binary | ios_base::in); #ifdef REMOTE_XML boost::archive::xml_iarchive inputArchive( archivStream ); #else boost::archive::binary_iarchive inputArchive( archivStream ); #endif
Message* msg = NULL; inputArchive >> msg; // line 164
return msg; }
Two things:
1.) You need to wrap the object into a NVP to use it with XML archives. 2.) You can only serialize const objects into a output archive, hence try passing a const pointer to the RemoteMessagingSystem::serialize function
Matthias
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