[Boost-users] Re: Serialization of cross-pointing objects

This should work - How is your case different that test_cycle.cpp ? The pointer conflict means that something has been serializaed as first as a pointer then as an object. Normally this should be easily avoidable. This is flagged as an error because the de-serialization would be a problem. First the deserialization of a pointer creates an object - next the object itself is re-loaded - but now we have two objects when we started with one. Robert Ramey Henrik Jacobsson wrote:

Hi!

I want to serialize objects that link to each other through pointers, like a linked list, but in this case a more complex graph with several different classes and proxies (a graph which can contain loops and and null-pointers).

But I get the "pointer conflict" exception since the serialization discovers that an object have been serialized once before through its pointer. The contents should be serialized/deserialized only once, and then the pointers should just be kept consistent.

An alternative is of course to replace all the pointers with indeces which are memory-independent. But that's a messy affair.

In the copy constructor I solved something similar through a map which mapped from the old pointers to the newly allocated ones, so that they could be properly replaced. Is something like this hidden somewhere in the lib?

Any suggestions?

Best regards, Henrik Jacobsson