Is this a Xerces bug

[Xiaofan Zhou]

Hi, All,

 

I am using the SAX parser from xerces-c (version 2.7) to parse XML file. I have one case related to an attribtue with default value defined in the schema (I pasted the instance document and the schema in this message). When I parse the instance document, I noticed the following:

 

If I turn on parser validation (for which I use loadGrammar to give the parser the test.xsd), for the two elements <image>, from the SAX startElement event, I got one attribtue for each, and have the following values: 

 

 For the first <image> element:

 

  URI                                                   QName      LocalName         Value   
  =========================================================================================
  http://www.attribute-examples.org       src             src                      http://www.xfront.com

 

 For the second <image> element

 

  URI                                                   QName      LocalName         Value
  ==================================================================================
  http://www.attribute-examples.org       i:src             src                   http://www.xfront.com/BestPractices.html

However, if I turn off parser validation, I got two attributes for the second <image> element from the SAX startElement event as below:

 

  URI                                                   QName      LocalName         Value
  ==================================================================================
  http://www.attribute-examples.org        i:src          src                     http://www.xfront.com/BestPractices.html
  http://www.attribute-examples.org        src            src                     http://www.xfront.com

I would expect consistence between the two senarios, am I right?

 

Thanks much.

Frank

 

instance XML doc

=========

<?xml version="1.0"?>
<AttributeExamples xmlns="http://www.attribute-examples.org" xmlns:i="http://www.attribute-examples.org" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.attribute-examples.org test.xsd">

    <image/>                                                                          <!-- Using the default value -->
    <image i:src=""/'>http://www.xfront.com/BestPractices.html"/>  <!-- Not using the default value -->

</AttributeExamples>

 

schema test.xsd

============

<?xml version="1.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"  targetNamespace="http://www.attribute-examples.org" xmlns="http://www.attribute-examples.org"
            elementFormDefault="qualified">

 

    <xsd:element name="image">
        <xsd:complexType>
            <xsd:attribute ref="src" default="http://www.xfront.com"/>
        </xsd:complexType>
    </xsd:element>

 

    <xsd:attribute name="src" type="xsd:anyURI"/>

 

    <xsd:element name="AttributeExamples">
        <xsd:complexType>
            <xsd:sequence>
                <xsd:element ref="image" maxOccurs="2"/>
            </xsd:sequence>
        </xsd:complexType>
    </xsd:element>

 

</xsd:schema>