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Crash in SchemaValidator::validateElement

From: Shirish Kulkarni <shirish_kul@yahoo.com>
Date: Wed, 12 Mar 2003 07:40:27 -0800 (PST)
Message-ID: <20030312154027.9674.qmail@web41103.mail.yahoo.com>
To: Christian Sell <christian.sell@netcologne.de>
Cc: xerces-c-dev@xml.apache.org, xmlschema-dev@w3.org

Hi, 

I am able to successfully implement EntityResolver to
take care of the external schema locations. 

The parser is observed to throw and exception, when
the Schma is missing at the specified location - but
for the next call to parse() method, the application
is observed to be crashing with the following stack - 

   DOMParser::parse(0x29c4e88, 0x2110b20, 0x0,
0x29c4e8c, 0x2551bb0, 0x2a70330) 
        XMLScanner::scanDocument(0x277aab0, 0x2110b20,
0x0, 0x2a7033c, 0x400c00, 0x3180) 
        XMLScanner::scanDocument(0x277aab0, 0x29c0d40,
0x0, 0x29d6c68, 0x574884,
     0x1bb2e0) 
        XMLScanner::scanDocument(0x277aab0, 0x2a70bb8,
0x0, 0x277ab20, 0x0, 0x29c4e88) 
        XMLScanner::scanContent(0x277aab0, 0x1, 0x1,
0x56ff9c, 0x56ffc4, 0x55efb5) 
        XMLScanner::scanStartTagNS(0x277aab0,
0xffbe847f, 0x20ea1b0, 0x5516b8, 0x0, 0x1) 
        SchemaValidator::validateElement(0x2551bb0,
0x20ea1b0, 0x0, 0x20ea1b0, 0x25530a0,
     0x0) 

I am using Xerces V 1.5.1 on sun4_solaris. 


I am calling XMLPlatformUtils::Initialize(); only once
in the application [ because of the know bug in this
version ] 

I suspect the following 
+ I must be missing some statics ( either with thee
parser instance OR related to Initialize() OR with the
application ] after the exception is thrown, which for
the next call to the parse() method is clashing. 

Any clues / hints are welcome. 

Thanks, 
Shirish


--- Christian Sell <christian.sell@netcologne.de>
wrote:
> this may be dependent on the XML processor you are
> using. For Xerces, I 
> think I can say that if you provide a schemaLocation
> attribute, it will 
> be handed to the registered EntityResolver. The ER
> can fetch the schema 
> from wherever it deems appropriate (even generate)
> 
> Shirish Kulkarni wrote:
> > Hi, 
> > 
> > I would like to locate the schema's at a central
> > location on a Unix machine and be able to access
> them
> > - irrespective of the run-directory of the parser
> > application 
> > 
> > Thus the access is through local machine / nfs on
> Unix
> > machines. 
> > 
> > For DTD's, we have to use EntityResolver to point
> to
> > the application controlled path to search for the
> > DTD's for Xerces parser. 
> > 
> > I have the following questions - 
> > 
> > + Do Schema require the EntityResolver to be used
> ? 
> > + Can Schema's be accessible \without/ httpd
> running
> > on the serving machine ? 
> > 
> > Any guidance will be appreciated. 
> > 
> > Thanks,
> > Shirish
> > 
> > __________________________________________________
> > Do you Yahoo!?
> > Yahoo! Web Hosting - establish your business
> online
> > http://webhosting.yahoo.com
> > 
> > 
> 
> 


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Received on Wednesday, 12 March 2003 10:40:34 GMT

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