Re: [xml] external DTD validation of large XML's

[Noam Postavsky <npostavs users sourceforge net>]

Jon <jon forums gmail com> writes:

> > In many cases you don't even need that. Write a shell XML file,
> >
> > <!DOCTYPE wrapper SYSTEM "the-dtd-file.dtd" [
> >   <!ELEMENT wrapper the-real-root-element>
> >   <!ENTITY the-real-document SYSTEM "bigfile.xml">
> > ]>
> > <wrapper>&the-real-document;</wrapper>
>
> Will the libxml2 implementation try to bring the entire &the-real-document; entity into memory, or will it 
> stream it if I use the SAX2 or Reader API?  My gut tells me both the dtd and the bigfile.xml will be 
> completely parsed into memory. This is fine for the dtd but not for the bigfile.xml.

A reading of xmlParseReference suggests your gut is wrong. :)

http://git.gnome.org/browse/libxml2/tree/parser.c#n6823