Ok, I got it to work.. I think... So to serialize a collection (multiset in my case) of shared ptrs such that the collection inherited from std::multiset the following steps need to be taken (and may be I have more here than needed) 1) Include appropriate header file from #include #include #include #include 2) Do NOT make a serialize method within your class (the child fo the std::multiset) 3) you will need to typecast up to the parent your class object instance before calling the serialization/deserialization (otherwise you will get a compile time error that your class does not have a serialize method) Therefore I had to use the make_nvp function directly (and not that NVP macro) ia >> boost::serialization::make_nvp("MYTABLE",(tTB::ThisParent&)mytb); my two major mistakes were not including the header file for collection and the adding a method called serialize within my child (and that made the serialize library use my version which did not make sense) Vlad On Fri, 19 Jun 2009 16:18 -0400, "V S P" wrote:

I made may be a little more headways since my previous question

and now have an xml archive that appears to 'denote' the shared pointers (see below)

To do this I found and used boost template function specifically for shared pointers

-- a data member of myclass inheritin from std::multiset -- TRow is the Value type of the multiset that implements 'serialize' method -- -- struct { template <typename Archive> void serialize (Archive& ar, const unsigned int version)const { for(tThisClassConstIterator it=this->begin(); it!=this->end(); ++it) { boost::serialization::save(ar,*it,version); }

}

tTEST_TB3

now however I do not understand how to 'deserialize this'

The basic call to

void load_table (tTEST_TB3& t, const char * filename) { // open the archive std::ifstream ifs(filename); assert(ifs.good()); boost::archive::xml_iarchive ia(ifs);

ia >> BOOST_SERIALIZATION_NVP(t); }

does not even compile, I suspect it is because

when this 'serialize' function on tTEST_TB3 is called, now the boost::serialization::save(ar,*it,version);

is NOT valid, because the ar is of type iarchive, and save function on the shared_ptr is not defined for 'iarchive', only for oarchive.

So there is another function in the same boost header file ( #include ) that defines a 'load' function for the shared ptr

However -- what I do not undestand is how to invoke this function

it seems like I have to iterate through every entry in the archive and then call load to read it into a shared ptr? That seems to be contrary to all the other mechanism supported by the Serialization library.

The basic examples just say that I can take a container and just shift it in (or out) of Archiver -- but that does not work if the container is of shared pointers. That's why I went the route of iterating through every element of the container to serialize, and not do not undestand how to load it back.

So I need some help (I can provide the complete example if needed)

thank you in advance

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<?xml version="1.0" encoding="UTF-8" standalone="yes" ?> <!DOCTYPE boost_serialization> <t class_id="0" tracking_level="0" version="0"> <px class_id="1" tracking_level="1" version="0" object_id="_0"> 1245439719 1245439719 <mydate>6/19/2009 15:28:39</mydate> <amount>33222112121.212000</amount> </px> <px class_id_reference="1" object_id="_1"> 1245439719 1245439719 <mydate>6/19/2009 15:28:39</mydate> <amount>33222112121.212000</amount> </px> <px class_id_reference="1" object_id="_2"> 1245439719 1245439719 <mydate>6/19/2009 15:28:39</mydate> <amount>33222112121.212000</amount> </px> <px class_id_reference="1" object_id="_3"> 1245439719 1245439719 <mydate>6/19/2009 15:28:39</mydate> <amount>33222112121.212000</amount> </px> <px class_id_reference="1" object_id="_4"> 1245439719 1245439719 <mydate>6/19/2009 15:28:39</mydate> <amount>33222112121.212000</amount> </px> <px class_id_reference="1" object_id="_5"> 1245439719 1245439719 <mydate>6/19/2009 15:28:39</mydate> <amount>33222112121.212000</amount> </px> <px class_id_reference="1" object_id="_6"> 1245439719 1245439719 <mydate>6/19/2009 15:28:39</mydate> <amount>33222112121.212000</amount> </px> <px class_id_reference="1" object_id="_7"> 1245439719 1245439719 <mydate>6/19/2009 15:28:39</mydate> <amount>33222112121.212000</amount> </px> <px class_id_reference="1" object_id="_8"> 1245439719 1245439719 <mydate>6/19/2009 15:28:39</mydate> <amount>33222112121.212000</amount> </px> <px class_id_reference="1" object_id="_9"> 1245439719 1245439719 <mydate>6/19/2009 15:28:39</mydate> <amount>33222112121.212000</amount> </px> </t>

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