RE: Xerces-C and http: access

[Lihong Pei <Li...@xilinx.com>]

Hi, Martin, 
Sorry I don't know the answer to your question. I'm querying the experts
in the Apache xercesc group for suggestions.

Thanks, 

Lihong

-----Original Message-----
From: Martin Sinclair 
Sent: Friday, April 11, 2008 9:24 AM
To: Lihong Pei
Subject: Xerces-C and http: access

Hi; I've been doing some work using the Xerces-C library, and I was
wondering if you could help me.

I've been using XercesDOMParser to parse xml files; and I would like to
implement schema validation. I can validate my xml files against a
schema, if that schema is a local file. But when I try to validate my
xml files against a web URL (in this case
http://www.spiritconsortium.org/XMLSchema/SPIRIT/1.4/index.xsd) the
XercesDOMParser::parse operation throws an exception.

The Xerces-C FAQ suggests that I use XMLNetAccessor, but it only says
"Xerces-C++ provides the NetAccessor interface. The header file is
src/xercesc/util/XMLNetAccessor.hpp. This interface allows you to plug
in your own implementation of URL networking code into the Xerces-C++
parser". It doesn't give any examples, or say how to plug things in.

Have you got, or do you know where I could find, a piece of example code
where Xerces reads something from outside the Xilinx firewall?

Thanks very much,
Martin
 _  
/ /\/  Martin Sinclair
\ \    Solutions Development Group
/ /    Xilinx Scotland
\_\/\  Tel: +44 (0)131 312 5049 or (826) 5049
 


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Re: Xerces-C and http: access

[Alberto Massari <am...@datadirect.com>]

The standard NetAccessor doesn't support proxy authentication, so if 
this is your case, you should recompile Xerces specifying -n libwww to 
runConfigure. If you don't want to switch to libWWW, you can also 
implement an EntityHandler to intercept the request for the schema and 
either load a local copy (best performances) or use your preferred net 
API to download the file (see the Redirect sample for an example)

Alberto

Lihong Pei wrote:
> Hi, Martin, 
> Sorry I don't know the answer to your question. I'm querying the experts
> in the Apache xercesc group for suggestions.
>
> Thanks, 
>
> Lihong
>
> -----Original Message-----
> From: Martin Sinclair 
> Sent: Friday, April 11, 2008 9:24 AM
> To: Lihong Pei
> Subject: Xerces-C and http: access
>
> Hi; I've been doing some work using the Xerces-C library, and I was
> wondering if you could help me.
>
> I've been using XercesDOMParser to parse xml files; and I would like to
> implement schema validation. I can validate my xml files against a
> schema, if that schema is a local file. But when I try to validate my
> xml files against a web URL (in this case
> http://www.spiritconsortium.org/XMLSchema/SPIRIT/1.4/index.xsd) the
> XercesDOMParser::parse operation throws an exception.
>
> The Xerces-C FAQ suggests that I use XMLNetAccessor, but it only says
> "Xerces-C++ provides the NetAccessor interface. The header file is
> src/xercesc/util/XMLNetAccessor.hpp. This interface allows you to plug
> in your own implementation of URL networking code into the Xerces-C++
> parser". It doesn't give any examples, or say how to plug things in.
>
> Have you got, or do you know where I could find, a piece of example code
> where Xerces reads something from outside the Xilinx firewall?
>
> Thanks very much,
> Martin
>  _  
> / /\/  Martin Sinclair
> \ \    Solutions Development Group
> / /    Xilinx Scotland
> \_\/\  Tel: +44 (0)131 312 5049 or (826) 5049
>  
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: c-dev-unsubscribe@xerces.apache.org
> For additional commands, e-mail: c-dev-help@xerces.apache.org
>
>
>
>   



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