Re: [Boost-users] [serialization] dynamic arrays of chars

From: Ivan (ivan.rachev_at_[hidden])
Date: 2005-08-21 17:45:25

I am trying to automate object serialization to the extent that C++ 
programmers would put a macro into each class they want to serialize and 
not do anything else. Much the same way as with the [serializable] 
attribute in C# or Serializable interface in Java. I have a preprocessor 
that  generates template <class Archive> void serialize(Archive &s ... ) 
function for each class  the programmer wants to serialize and I require 
the programmer to link against boost::serialization. Now with this char* 
I need a solution that would not require the objects A, B, C and so on 
to know about the file.ptr. In other words the generated serialize funcs 
for A, B, C ... should not include code that uses file.ptr

This is actually why I need access to the internal IDs of objects that I 
was asking about in the other post with a subject:
[serialization] how for a particular object to get ID that is assigned 
by the lib

Ivan

Robert Ramey wrote:

>You could do the following:
>
>a) serialize your gigantic character array.
>b) For each pointer you want to serialize serialize the displacement from 
>the front of your array
>
>save(
>    ?; // save to huge array using binary object
>    unsigned int disp;
>    disp = A - file.ptr;
>    ar << disp;
>    disp = B - file.ptr;
>    ...
>}
>
>load(
>    ?; // load huge array using binary object
>    unsigned integer disp;
>    ar >> disp
>    a = file.ptr + disp;
>    ar >> disp
>    a = file.ptr + disp;
>    ...
>}
>
>
>Good Luck
>
>Robert Ramey
>
>
>
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