extension
XML Schema extension elementi
❮ To‘liq XML Schema ma’lumotnomasi
Ta’rif va qo‘llanilishi
extension elementi mavjud simpleType yoki complexType elementini kengaytiradi.
Element haqida ma’lumot
- Ota elementlar: simpleContent, complexContent
Sintaksis
<extension
id=ID
base=QName
any attributes
>
(annotation?,((group|all|choice|sequence)?,
((attribute|attributeGroup)*,anyAttribute?)))
</extension>(? belgisi element extension elementi ichida nol yoki bir marta, * belgisi esa nol yoki undan ko‘p marta kelishi mumkinligini bildiradi)
| Atribut | Tavsif |
|---|---|
| id | Ixtiyoriy. Element uchun noyob ID belgilaydi |
| base | Majburiy. O‘rnatilgan ma’lumot tipi, simpleType elementi yoki complexType elementining nomini belgilaydi |
| any attributes | Ixtiyoriy. Sxemaga oid bo‘lmagan nomlar fazosidagi boshqa har qanday atributlarni belgilaydi |
1-misol
Quyidagi misol mavjud simpleType’ni atribut qo‘shish orqali kengaytiradi:
<?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>2-misol
Quyidagi misol mavjud complexType elementini uchta element qo‘shish orqali kengaytiradi:
<?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>❮ To‘liq XML Schema ma’lumotnomasi
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