Hi,<br>
   I have started using Boost Serialization in one of my project
and thanks for the library. I may be asking a question that might have
got repeated, but i did my search on the forums but couldn&#39;t get the
relevant answer.<br>

   I have a data-type which is more like a universal datatype(unsigned
long). Consider a 64 bit system and if the value to be stored in this
datatype is greater than 8 bytes, then it is stored as value. If the
value to be stored is greater than 8 bytes, then it is stored elsewhere
and the pointer is stored here. By using other meta-data information,
the data is extracted from this data-type.<br>

   To be exact, i am referring to the datum implementation in
open-source database postgresql. If i have to serialize this data-type,
i need more info from other variables which store the metadata. The
functions, i am trying to implement in Boost serialization are
readDatum and _outDatum(similar to load/save). I don&#39;t see, how i can
do that in Boost serialization, especially because of the signature of
the load/save function. It only takes the version and the object to be
serialized. How can i pass the other meta-data?<br>

  I could always create a new data-type(say SerializableDatum) with all
the required info, but then this data-type is being created only for
the purpose of serialization. <br>
  Is there any better way to achieve the same result?<br>

<br>
Thanks,<br>
Gokul.