Import complex types from another XSD

Question

I am finding difficulty in importing and referencing a complex type from one XSD file to another. Let me illustrate my scenario with an example

Student.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="xyz"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:common="xyz"
    xmlns="xyz"
    elementFormDefault="qualified">

    <xsd:element name="student" type="student" />

    <xsd:complexType name="student">
        <xsd:sequence>
            <xsd:element name="id" type="xsd:string" />
            <xsd:element name="birth-date" type="xsd:date" />
        </xsd:sequence>
    </xsd:complexType>
</xsd:schema>

Here is another XSD, Teacher.xsd, where I would like to reference the complex type student from student.xsd

Teacher.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema targetNamespace="xyz"
    xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:common="xyz"
    xmlns="xyz"
    elementFormDefault="qualified">

    <xsd:import schemaLocation="student.xsd"
        namespace="xyzzz" />

    <xsd:element name="teacher" type="teacher" />

    <xsd:complexType name="teacher">
        <xsd:sequence>
            <xsd:element name="id" type="xsd:string" />
            <xsd:element name="name" type="xsd:string" />

            // TODO - Refer to student from student.xsd

        </xsd:sequence>
    </xsd:complexType>

</xsd:schema>

I have seen other Stack Overflow posts regarding the syntax for achieving this like

<xs:element name="teacher" type="teacher:teacher"/>

along with import:

<xsd:import schemaLocation="xyz" namespace="xyz"/>

but nothing seems to be working.

Can someone help me achieve this ?

kjhughes · Accepted Answer · 2017-12-06T22:58:05.530

6

Use xsd:include rather than xsd:import since the XSDs are in the same namespace.

Notes

You'll want to include Student.xsd, not common.xsd.
Since the type being referenced is in the same namespace, you don't need to specify a namespace prefix:
```
<xsd:element name="student" type="student"/>
```
It's better style to name your elements and attributes differently.

See also

What's the difference between xsd:include and xsd:import?
How to reference element in other XSD's namespace? (for complete, working example of xsd:import use for when namespaces differ)

edited Dec 06 '17 at 22:58

answered Dec 06 '17 at 22:36

kjhughes

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I need to reference complex types from other namespace as well. Can you help me with the code for that ? – Aarish Ramesh Dec 06 '17 at 22:47
1

I've added a link to a complete, working example of how to use `xsd:import`. – kjhughes Dec 06 '17 at 22:58
I am getting this error while trying to reference complex type student in teacher "Invalid attribute value for 'ref' in element 'element'. Recorded reason: UndeclaredPrefix: Cannot resolve 'student:student' as a QName: the prefix 'student' is not declared" . Can you please check? – Aarish Ramesh Dec 06 '17 at 23:16
Hi, I have asked another question https://stackoverflow.com/questions/47685305/import-complex-types-from-xsd-in-different-namespace . Can you please look into it ? Thanks a lot – Aarish Ramesh Dec 06 '17 at 23:39

Import complex types from another XSD

1 Answers1