XQuery Implementation: Galax version 0.5.0 available

XQuery Implementation: Galax version 0.5.0 available

[Mary Fernandez]

We are proud to announce version 0.5.0 of Galax, an open source
implementation of XQuery 1.0.

This version implements the October 2004 XQuery working drafts and
includes a completely redesigned compiler with an algebraic optimizer,
a more efficient XML parser, and numerous bug fixes.

Galax 0.5.0 can be downloaded from the Galax Web site at:

   http://www.galaxquery.org/

In addition to the Galax source, pre-compiled binaries are available
for Linux, MacOS, Solaris, and Windows with MinGW.

Galax provides APIs for O'Caml, C, and Java and is implemented in
O'Caml.
-- 
Mary Fernandez <mff@research.att.com>
AT&T Labs - Research

Re: [Caml-list] XQuery Implementation: Galax version 0.5.0 available

[skaller]

On Thu, 2005-02-17 at 11:40, Mary Fernandez wrote:

> Galax provides APIs for O'Caml, C, and Java and is implemented in
> O'Caml.

I'm curious how you provide a CAPI for Ocaml code?

-- 
John Skaller, mailto:skaller@users.sf.net
voice: 061-2-9660-0850, 
snail: PO BOX 401 Glebe NSW 2037 Australia
Checkout the Felix programming language http://felix.sf.net

Re: [Caml-list] XQuery Implementation: Galax version 0.5.0 available

[Mary Fernandez]

It's not hard, really, just tedious. Unfortunately,
the Caml IDL tool only generates wrapper code for
calling C from O'Caml, not vice versa, so we
write that code by hand.   In short:

C_API_stub.c - contains our C API. This code handles 
  converting C values to O'Caml values, setting up
  actual arguments to O'Caml functions, then calling
  the O'Caml callback functions.  There's some messy
  memory/heap management code in here too

Caml_API_stub.ml - contains wrapper functions that
  are called from C API.  These functions are registered
  using the Callback module.  They call our real Caml API.
  
We create a shared library that contains our Caml library,
the C_API stub, and the O'Caml runtime system.  (IT's BIG!)
And that gets linked with the user's C program.

I hope that makes sense.
Mary
On Wed, 2005-02-16 at 20:19, skaller wrote:
> On Thu, 2005-02-17 at 11:40, Mary Fernandez wrote:
> 
> > Galax provides APIs for O'Caml, C, and Java and is implemented in
> > O'Caml.
> 
> I'm curious how you provide a CAPI for Ocaml code?
-- 
Mary Fernandez <mff@research.att.com>
AT&T Labs - Research