XML/XML Schema/fixed
Содержание
element fixed value is the restriction value
<source lang="xml">
File: Data.xml <?xml version="1.0"?> <ElementExamples xmlns="http://www.wbex.ru"
xmlns:ex="http://www.wbex.ru" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wbex.ru Schema.xsd"> <aircraft/> <aircraft>Boeing 747</aircraft>
</ElementExamples> File: Schema.xsd <?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru" elementFormDefault="qualified"> <xsd:element name="ElementExamples"> <xsd:complexType> <xsd:sequence> <xsd:element name="aircraft" fixed="Boeing 747" maxOccurs="2"> <xsd:simpleType> <xsd:restriction base="xsd:string"> <xsd:enumeration value="Boeing 747"/> </xsd:restriction> </xsd:simpleType> </xsd:element> </xsd:sequence> </xsd:complexType> </xsd:element>
</xsd:schema>
</source>
Fixed facets ensure that the minimum value of our minInclusive cannot be modified
<source lang="xml">
<?xml version="1.0"?> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru" elementFormDefault="qualified"> <xs:simpleType name="minInclusive"> <xs:restriction base="xs:float"> <xs:minInclusive value="10" fixed="true" /> </xs:restriction> </xs:simpleType>
</xs:schema>
</source>
fixed value is one of the value in restriction
<source lang="xml">
File: Data.xml <?xml version="1.0"?> <AttributeExamples xmlns="http://www.wbex.ru"
xmlns:i="http://www.wbex.ru" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wbex.ru Schema.xsd"> <image/> <image i:src="http://www.wbex.ru"/>
</AttributeExamples> File: Schema.xml <?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru" elementFormDefault="qualified"> <xsd:element name="image"> <xsd:complexType> <xsd:attribute ref="src" fixed="http://www.wbex.ru"/> </xsd:complexType> </xsd:element> <xsd:attribute name="src"> <xsd:simpleType> <xsd:restriction base="xsd:anyURI"> <xsd:enumeration value="http://www.wbex.ru"/> <xsd:enumeration value="http://www.wbex.ru/style/logo.png"/> <xsd:enumeration value="http://www.wbex.ru/isbn.html"/> </xsd:restriction> </xsd:simpleType> </xsd:attribute> <xsd:element name="AttributeExamples"> <xsd:complexType> <xsd:sequence> <xsd:element ref="image" maxOccurs="2"/> </xsd:sequence> </xsd:complexType> </xsd:element>
</xsd:schema>
</source>
Reference element with fixed value
<source lang="xml">
File: Data.xml <?xml version="1.0"?> <ElementExamples xmlns="http://www.wbex.ru"
xmlns:ex="http://www.wbex.ru" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation= "http://www.wbex.ru Schema.xsd"> <aircraft/> <aircraft>Boeing 747</aircraft>
</ElementExamples>
File: Schema.xsd <?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru" elementFormDefault="qualified"> <xsd:element name="aircraft" fixed="Boeing 747"> <xsd:simpleType> <xsd:restriction base="xsd:string"> <xsd:enumeration value="Boeing 747"/> </xsd:restriction> </xsd:simpleType> </xsd:element> <xsd:element name="ElementExamples"> <xsd:complexType> <xsd:sequence> <xsd:element ref="aircraft" maxOccurs="2"/> </xsd:sequence> </xsd:complexType> </xsd:element>
</xsd:schema>
</source>
Set fixed value for attribute during simpleType declaration
<source lang="xml">
File: Data.xml <?xml version="1.0"?> <AttributeExamples xmlns="http://www.wbex.ru"
xmlns:i="http://www.wbex.ru" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.wbex.ru Schema.xsd"> <image/> <image i:src="http://www.wbex.ru"/>
</AttributeExamples> File: Schema.xml <?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.wbex.ru" xmlns="http://www.wbex.ru" elementFormDefault="qualified"> <xsd:element name="image"> <xsd:complexType> <xsd:attribute ref="src"/> </xsd:complexType> </xsd:element> <xsd:attribute name="src" fixed="http://www.wbex.ru"> <xsd:simpleType> <xsd:restriction base="xsd:anyURI"> <xsd:enumeration value="http://www.wbex.ru"/> <xsd:enumeration value="http://www.wbex.ru/style/logo.png"/> <xsd:enumeration value="http://www.wbex.ru/isbn.html"/> </xsd:restriction> </xsd:simpleType> </xsd:attribute> <xsd:element name="AttributeExamples"> <xsd:complexType> <xsd:sequence> <xsd:element ref="image" maxOccurs="2"/> </xsd:sequence> </xsd:complexType> </xsd:element>
</xsd:schema>
</source>