Extracting namespace URI from a referenced type ?

["Hussain, Malik" <Mh...@rational.com>]

Does xerces provide any way to extract the namespace URI of a referenced
type ?

Details...
There are two .xsd files below: customer.xsd and account.xsd.

The "savingAccount" element in customerNS namespace in customer.xsd derives
off of "saving" type in accountNS in account.xsd using the <<import>> tag.

Note that both files define types in two different namespaces.

I like to be able to extract "http://theXFiles/accountNS" (the saving's
namespace) from savingAccount element while parsing customer.xsd.

Is the solution available for both xerces's DOM and SAX parsers ? 

thanks
malik

customer.xsd
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="http://theXFiles/customerNS"
xmlns:xsd="http://www.w3.org/2000/10/XMLSchema"
xmlns:tns="http://theXFiles/customerNS"
xmlns:accountNS="http://theXFiles/accountNS" elementFormDefault="qualified">
	<xsd:import namespace="http://theXFiles/accountNS"
schemaLocation="D:\work\wm-xml\doc\product management\Rose XML
Modeler\account.xsd"/>
	<xsd:element name="customer" type="tns:customerType"/>
	<xsd:complexType name="customerType">
		<xsd:sequence>
			<xsd:element name="lastName" type="xsd:string"/>
			<xsd:element name="firstName" type="xsd:string"/>
			<xsd:element name="contactInfo" type="xsd:string"/>
			<xsd:element name="savingAccount"
type="accountNS:saving"/>
			<xsd:element name="checkingAccount"
type="accountNS:checking"/>
		</xsd:sequence>
	</xsd:complexType>
</xsd:schema>


account.xsd
<?xml version="1.0" encoding="UTF-8"?>
<schema targetNamespace="http://theXFiles/accountNS"
xmlns="http://www.w3.org/2000/10/XMLSchema"
xmlns:tns="http://theXFiles/accountNS" elementFormDefault="qualified">
	<complexType name="account">
		<sequence>
			<element name="number" type="positiveInteger"/>
			<element name="balance" type="float"/>
			<element name="transaction"
type="tns:transactionType" minOccurs="0" maxOccurs="unbounded"/>
		</sequence>
	</complexType>
	<complexType name="transactionType">
		<sequence>
			<element name="date" type="date"/>
			<element name="kind" type="tns:transactionKind"/>
		</sequence>
	</complexType>
	<simpleType name="transactionKind">
		<restriction base="string">
			<enumeration value="withdraw"/>
			<enumeration value="deposit"/>
		</restriction>
	</simpleType>
	<complexType name="saving">
		<complexContent>
			<extension base="tns:account">
				<sequence>
					<element name="interest"
type="float"/>
				</sequence>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="checking">
		<complexContent>
			<extension base="tns:account">
				<sequence>
					<element name="fee" type="float"/>
				</sequence>
			</extension>
		</complexContent>
	</complexType>
</schema>