Including element from one schema namespace in another schema namespace

[mflll]

How does one say in one schema that one wants an element defined in
another schema. For example, I want to include in the Employee
definition, an Address element defined in the schema
http://test.org.Address

Here is the schema defining the Employee:

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="http://test.org/emp"
xmlns="http://test.org/emp"
xmlns:addr="http://test.org/Address"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" version="2.0">
<xsd:import namespace="http://test.org/Address"
schemaLocation="Address.xsd"/>
<xsd:complexType name = "EmployeeType">
<xsd:sequence>
<xsd:element ref="Name" minOccurs="1" maxOccurs="1"/>
<xsd:element ref="JobInfo" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element ref="Salary" minOccurs="0" maxOccurs="1" />
<addr:Address minOccurs="1" maxOccurs="1"/>
</xsd:sequence>
</xsd:complexType>
....
</xsd:schema>

Here is the definition of the Address:

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="http://test.org/Address"
xmlns="http://test.org/address"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" version="2.0">

<xsd:complexType name="addressType">
<xsd:sequence>
<xsd:element minOccurs="1" maxOccurs="unbounded"
name="Line"><xsd:simpleType><xsd:restriction
base="xsd:string"/></xsd:simpleType></xsd:element>
<xsd:element minOccurs="1" maxOccurs="1"
name="City"><xsd:simpleType><xsd:restriction
base="xsd:string"/></xsd:simpleType></xsd:element>
<xsd:element minOccurs="1" maxOccurs="1"
name="State"><xsd:simpleType><xsd:restriction
base="xsd:string"/></xsd:simpleType></xsd:element>
<xsd:element minOccurs="1" maxOccurs="1"
name="zip"><xsd:simpleType><xsd:restriction
base="xsd:string"/></xsd:simpleType></xsd:element>
</xsd:sequence>
</xsd:complexType >
<xsd:element name="address" type="addressType"/>
</xsd:schema>

This gives me an error message.

Note, I have no problems bringing in a type from one schema into
another. That is, I created an addressType in the
http://test.org/Address
name space. I used that just fine to define an element in the
http://test.org/emp Schema. I am wondering if there is a way to bring
in an element itself from one schema into another.

(I also tried writing using the ref attribute, but ref requires a
QName, not
a NCName. So I got a syntax error message if I was to write
<xsd:element ref="emp:Address")

Dr. Laurence L. Leff, Ph.D. Associate Professor of Computer Science
Western Illinois University 1 University Circle Macomb IL 61455 309 367
0787
mf***@wiu.edu

[George Bina]

Hi,

First note that XML Schema component names are case sensitive and
address and Address are different components.
If you want to specify that the content of EmployeeType should contain
an element from the http://test.org/Address namespace named address
then use

<xs:element ref="addr:address"/>

Best Regards,
George
---------------------------------------------------------------------
George Cristian Bina
<oXygen/XML Editor, Schema Editor and XSLT Editor/Debugger
http://www.oxygenxml.com

mf***@wiu.edu wrote:

How does one say in one schema that one wants an element defined in
another schema. For example, I want to include in the Employee
definition, an Address element defined in the schema
http://test.org.Address

Here is the schema defining the Employee:

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="http://test.org/emp"
xmlns="http://test.org/emp"
xmlns:addr="http://test.org/Address"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" version="2.0">
<xsd:import namespace="http://test.org/Address"
schemaLocation="Address.xsd"/>
<xsd:complexType name = "EmployeeType">
<xsd:sequence>
<xsd:element ref="Name" minOccurs="1" maxOccurs="1"/>
<xsd:element ref="JobInfo" minOccurs="0" maxOccurs="unbounded"/>
<xsd:element ref="Salary" minOccurs="0" maxOccurs="1" />
<addr:Address minOccurs="1" maxOccurs="1"/>
</xsd:sequence>
</xsd:complexType>
....
</xsd:schema>

Here is the definition of the Address:

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="http://test.org/Address"
xmlns="http://test.org/address"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
elementFormDefault="qualified" version="2.0">

<xsd:complexType name="addressType">
<xsd:sequence>
<xsd:element minOccurs="1" maxOccurs="unbounded"
name="Line"><xsd:simpleType><xsd:restriction
base="xsd:string"/></xsd:simpleType></xsd:element>
<xsd:element minOccurs="1" maxOccurs="1"
name="City"><xsd:simpleType><xsd:restriction
base="xsd:string"/></xsd:simpleType></xsd:element>
<xsd:element minOccurs="1" maxOccurs="1"
name="State"><xsd:simpleType><xsd:restriction
base="xsd:string"/></xsd:simpleType></xsd:element>
<xsd:element minOccurs="1" maxOccurs="1"
name="zip"><xsd:simpleType><xsd:restriction
base="xsd:string"/></xsd:simpleType></xsd:element>
</xsd:sequence>
</xsd:complexType >
<xsd:element name="address" type="addressType"/>
</xsd:schema>

This gives me an error message.

Note, I have no problems bringing in a type from one schema into
another. That is, I created an addressType in the
http://test.org/Address
name space. I used that just fine to define an element in the
http://test.org/emp Schema. I am wondering if there is a way to bring
in an element itself from one schema into another.

(I also tried writing using the ref attribute, but ref requires a
QName, not
a NCName. So I got a syntax error message if I was to write
<xsd:element ref="emp:Address")

Dr. Laurence L. Leff, Ph.D. Associate Professor of Computer Science
Western Illinois University 1 University Circle Macomb IL 61455 309 367
0787
mf***@wiu.edu