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Serialisation of PXP DTDs
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Date: 2008-10-23 (14:54)
From: Gerd Stolpmann <info@g...>
Subject: Re: [Caml-list] Serialisation of PXP DTDs

Am Mittwoch, den 22.10.2008, 13:11 -0700 schrieb Dario Teixeira:
> Hi,
> I am using PXP to parse the MathML2 DTD.  This is a fairly large DTD,
> which even on a fast machine takes several seconds to parse.  I am
> therefore looking at ways to serialise a parsed DTD, in a such a way
> that it can be reused by other processes.
> Does PXP already offer primitives for (un)serialising DTDs?  (I couldn't
> find any).  Note that using Marshal is out of the question, because DTDs
> are stored as objects, and we all know that objects cannot be serialised
> across process boundaries.  But are there alternative solutions I'm
> overlooking?

No, there is currently no built-in function to serialize DTD's. The DTD
objects are, however, mostly containers, and you can get all their
properties by invoking methods of the object interface. That allows it
to do your own serialization. You are a bit dependent on the PXP version
then, but I don't think the interface of DTD's will change anytime soon.


> On a more general but related note, I think we should start an OSP
> discussion about standardising serialisation methods.  The rationale
> should be obvious.  Myself, I am partial to Sexplib, since it is
> reasonably fast, very simple to use, human-readable, and future-proof.
> I reckon that bin-prot could also be considered, as long as at some
> point the binary format is "set in stone", or at least deserialisers
> are always backwards compatible.  Any other opinions?
> Thanks for your time!
> Cheers,
> Dario Teixeira
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