Define fixed value for referenced attribute type


File: Data.xml

<?xml version="1.0"?>
<images xmlns="http://www.java2s.com"
                   xmlns:i="http://www.java2s.com"
                   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
                   xsi:schemaLocation=
                              "http://www.java2s.com
                               Schema.xsd">

    <image/>                            
    <image i:src="http://www.java2s.com"/>

</images>

File: Schema.xml

<?xml version="1.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            targetNamespace="http://www.java2s.com"
            xmlns="http://www.java2s.com"
            elementFormDefault="qualified">

    <xsd:element name="image">
        <xsd:complexType>
            <xsd:attribute ref="src" fixed="http://www.java2s.com"/>
        </xsd:complexType>
    </xsd:element>

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

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

</xsd:schema>

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Define fixed value for referenced attribute type : attribute « XML Schema « XML

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