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Re: XML XSD Validation

From: G. Ken Holman <gkholman@CraneSoftwrights.com>
Date: Thu, 28 May 2009 12:22:24 -0400
Message-Id: <7.0.1.0.2.20090528122026.0265fb58@wheresmymailserver.com>
To: xmlschema-dev@w3.org
At 2009-05-28 08:33 -0700, Rajeevr wrote:
>I am using Xerces for validating a XML against a XSD. Xsd validation can be
>done by two ways: noNamespaceSchemaLocation/schemaLocation.
>1
>I successfully validated it against XSD by using noNamespaceSchemaLocation
>like this:
>
><?xml version="1.0"?>
><dictionary xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>           xsi:noNamespaceSchemaLocation="c:/dictionary.xsd">
>
>2
>But I am facing problem in schemaLocation. When I provide schemaLocation
>which is well accessible and available in my local machine, Xerces throws
>this error: cvc-elt.1: Cannot find the declaration of element 'dictionary'.
>I put dictionary.xsd file under tomcat and started the tomcat server. But
>
><?xml version="1.0"?>
><dictionary xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
>                         xsi:schemaLocation="http://localhost:8080/a1/
>http://localhost:8080/a1/dictionary.xsd">
>
>
>XSD File;
><?xml version="1.0"?>
><xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema">
>         <xsd:element name="dictionary" type="dictionaryType"/>
>         <xsd:complexType name="dictionaryType">
>                 <xsd:sequence>
>                         <xsd:element 
> name="word" type="wordType" maxOccurs="unbounded"/>
>                 </xsd:sequence>
>         </xsd:complexType>
>……………
>€€
>……………
>€€
>
>Someone please help me out to understand the exact problem.

As I see it your XML vocabulary doesn't use a 
namespace, thus xsi:noNamespaceSchemaLocation is 
working just fine as expected.  You can't expect 
the xsi:schemaLocation to work when you aren't 
using a namespace, because the namespace you are 
naming in the attribute isn't a namespace that is being used.

The xsi:schemaLocation has an arbitrary number of 
pairs of values, each pair being a namespace URI and a location URL:

    http://www.w3.org/TR/2004/REC-xmlschema-1-20041028/#schema-loc

Using this attribute is of no help if you aren't 
using a namespace for your XML vocabulary.

I hope this helps.

. . . . . . . . . . Ken


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Received on Thursday, 28 May 2009 16:25:36 GMT

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