XML elemento de extensão de esquema
XML completo Referência de esquema Definição e Uso
elementos de extensão de simpleType ou complexType elemento de expansão.
elemento de Informação
- Elemento pai: simpleContent, complexContent
gramática
<extension
id=ID
base=QName
any attributes
>
(annotation?,((group|all|choice|sequence)?,
((attribute|attributeGroup)*,anyAttribute?)))
</extension>
id=ID
base=QName
any attributes
>
(annotation?,((group|all|choice|sequence)?,
((attribute|attributeGroup)*,anyAttribute?)))
</extension>
(? Entrar declara no elemento de extensão, que pode aparecer zero ou uma vez, o sinal * declara que o elemento pode ocorrer zero ou mais vezes.)
| propriedade | descrição |
|---|---|
| identidade | Opcional. Ele especifica uma identificação única para o elemento. |
| base | Necessário. -Name construído tipo de dados especificado, simpleType ou complexType elemento. |
| xml: lang | Opcional. Ele define o idioma utilizado no conteúdo. |
exemplo 1
O exemplo a seguir adicionando atributos para estender um simpleType existente:
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:simpleType name="size">
<xs:restriction base="xs:string">
<xs:enumeration value="small" />
<xs:enumeration value="medium" />
<xs:enumeration value="large" />
</xs:restriction>
</xs:simpleType>
<xs:complexType name="jeans">
<xs:simpleContent>
<xs:extension base="size">
<xs:attribute name="sex">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="male" />
<xs:enumeration value="female" />
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:schema>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:simpleType name="size">
<xs:restriction base="xs:string">
<xs:enumeration value="small" />
<xs:enumeration value="medium" />
<xs:enumeration value="large" />
</xs:restriction>
</xs:simpleType>
<xs:complexType name="jeans">
<xs:simpleContent>
<xs:extension base="size">
<xs:attribute name="sex">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:enumeration value="male" />
<xs:enumeration value="female" />
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:schema>
exemplo 2
O exemplo a seguir adicionando três elementos a um extensões elemento complexType existentes:
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="employee" type="fullpersoninfo"/>
<xs:complexType name="personinfo">
<xs:sequence>
<xs:element name="firstname" type="xs:string"/>
<xs:element name="lastname" type="xs:string"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="fullpersoninfo">
<xs:complexContent>
<xs:extension base="personinfo">
<xs:sequence>
<xs:element name="address" type="xs:string"/>
<xs:element name="city" type="xs:string"/>
<xs:element name="country" type="xs:string"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:schema>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:element name="employee" type="fullpersoninfo"/>
<xs:complexType name="personinfo">
<xs:sequence>
<xs:element name="firstname" type="xs:string"/>
<xs:element name="lastname" type="xs:string"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="fullpersoninfo">
<xs:complexContent>
<xs:extension base="personinfo">
<xs:sequence>
<xs:element name="address" type="xs:string"/>
<xs:element name="city" type="xs:string"/>
<xs:element name="country" type="xs:string"/>
</xs:sequence>
</xs:extension>
</xs:complexContent>
</xs:complexType>
</xs:schema>
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