help parsing XMLSchema document

[Minh Kama Yie <mi...@nuix.com.au>]

Hi List,

I'm trying to parse the following document with validation turned on using 
xerces 1.4.3:


<?xml version = "1.0" encoding = "UTF-8"?>

<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
	    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	    xmlns:xml="http://www.w3.org/XML/1998/namespace"
	    xsi:schemaLocation="http://www.w3.org/2001/XMLSchema
	    http://www.w3.org/2001/XMLSchema.xsd
	    http://www.w3.org/XML/1998/namespace
	    http://jetty.coxless.com/schema/xml.xsd"
	    targetNamespace="http://jetty.coxless.com/schema/tmp"
	    xmlns:my-prefix="http://jetty.coxless.com/schema/tmp">


    <xsd:element name="form">
        <xsd:simpleType>
	    <xsd:union memberTypes="xsd:string"/>
        </xsd:simpleType>
    </xsd:element>

</xsd:schema>


As xerces parses the XMLSchema.xsd document during resolution of schema 
grammar it seems to have difficulties with the base type of 
"reducedDerivationControl", which is "derivationControl". However as far as I 
can tell, "derivationControl" is defined clearly in XMLSchema.xsd. I was just 
wondering if anyone has any ideas as to what I'm doing wrong or what I am 
missing?

I am getting the following exception trace:

org.xml.sax.SAXParseException: Unknown base type  for type 
reducedDerivationControl.
	at org.apache.xerces.framework.XMLParser.reportError(Unknown Source)
	at 
org.apache.xerces.validators.schema.TraverseSchema.reportSchemaError(TraverseSchema.java:8920)
	at 
org.apache.xerces.validators.schema.TraverseSchema.findDTValidator(TraverseSchema.java:2226)
	at 
org.apache.xerces.validators.schema.TraverseSchema.traverseSimpleTypeDecl(TraverseSchema.java:2496)
	at 
org.apache.xerces.validators.schema.TraverseSchema.doTraverseSchema(TraverseSchema.java:738)
	at 
org.apache.xerces.validators.schema.TraverseSchema.<init>(TraverseSchema.java:541)
	at 
org.apache.xerces.validators.common.XMLValidator.resolveSchemaGrammar(Unknown 
Source)
	at org.apache.xerces.validators.common.XMLValidator.parseSchemas(Unknown 
Source)
	at 
org.apache.xerces.validators.common.XMLValidator.bindNamespacesToElementAndAttributes(Unknown 
Source)
	at org.apache.xerces.validators.common.XMLValidator.callStartElement(Unknown 
Source)
	at org.apache.xerces.framework.XMLDocumentScanner.scanElement(Unknown Source)
	at 
org.apache.xerces.framework.XMLDocumentScanner$ContentDispatcher.dispatch(Unknown 
Source)
	at org.apache.xerces.framework.XMLDocumentScanner.parseSome(Unknown Source)
	at org.apache.xerces.framework.XMLParser.parse(Unknown Source)
	at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)



-- 
Regards, 

Minh Kama Yie
Nuix

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