I'm not really sure what you want to do but I'll attempt to answer anyhow. prez@neuromancy.net wrote:
Hey,
I want to use serialization for some kind of active replication,
It would seem to me that the easiest way to do this would be to make a TEE type streambuf using the stream buffer library. This would duplicate each write to an additional stream.
however the biggest barrier to this is the fact that serialization does not allow me to put the same object into the stream twice. To be more precise, I want to be able to serialize both to a network and to disk, and I very much like the elegance of the serialization approach (plus the fact it can re-create pointer references, arrays, and such).
I believe the above would cover this.
b) How difficult would it be to have more or less an 'appending' serialization stream - ie. I deserialize what I have previously stored on disk, and then continue to append to the serialization stream (which appends to the file from then on), making my serialization more or less unbounded.
I think something like that can be done now and is in fact already being done. I know the somepeople are "embedding" serialization data inside of other data by just passing the streambuffer around without closing it.
c) Is there currently an unbounded serialization stream? I mean, obviously the XML stream will not be 'complete' until you close the serialization stream and it can append any close tags it needs to, however if I wanted to continually write to a stream throughout the time my program is running, and if it crashes, be able to use that to get back to the state I was in, is it possible?
I believe that using "no_header" on opening might get you what you want. Robert Ramey