group
XML Schema group elementi
❮ To‘liq XML Schema ma’lumotnomasi
Ta’rif va qo‘llanilishi
group elementi murakkab tip ta’riflarida ishlatiladigan elementlar guruhini aniqlash uchun ishlatiladi.
Element haqida ma’lumot
- Ota elementlar: schema, choice, sequence, complexType, restriction (ham simpleContent, ham complexContent), extension (ham simpleContent, ham complexContent)
Sintaksis
<group
id=ID
name=NCName
ref=QName
maxOccurs=nonNegativeInteger|unbounded
minOccurs=nonNegativeInteger
any attributes
>
(annotation?,(all|choice|sequence)?)
</group>(? belgisi element group elementi ichida nol yoki bir marta kelishi mumkinligini bildiradi)
| Atribut | Tavsif |
|---|---|
| id | Ixtiyoriy. Element uchun noyob ID belgilaydi |
| name | Ixtiyoriy. Guruh uchun nom belgilaydi. Bu atribut faqat schema elementi ushbu group elementining otasi bo‘lganda ishlatiladi. name va ref atributlari bir vaqtda bo‘lishi mumkin emas |
| ref | Ixtiyoriy. Boshqa guruhning nomiga ishora qiladi. name va ref atributlari bir vaqtda bo‘lishi mumkin emas |
| maxOccurs | Ixtiyoriy. group elementi ota elementda ko‘pi bilan necha marta kelishi mumkinligini belgilaydi. Qiymat >= 0 bo‘lgan istalgan son bo‘lishi mumkin, maksimal songa cheklov qo‘ymaslik uchun esa "unbounded" qiymatidan foydalaning. Standart qiymat — 1 |
| minOccurs | Ixtiyoriy. group elementi ota elementda kamida necha marta kelishi kerakligini belgilaydi. Qiymat >= 0 bo‘lgan istalgan son bo‘lishi mumkin. Standart qiymat — 1 |
| any attributes | Ixtiyoriy. Sxemaga oid bo‘lmagan nomlar fazosidagi boshqa har qanday atributlarni belgilaydi |
1-misol
Quyidagi misol to‘rtta elementdan iborat ketma-ketlikni o‘z ichiga olgan guruhni aniqlaydi va group elementidan murakkab tip ta’rifida foydalanadi:
<?xml version="1.0"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
<xs:group name="custGroup">
<xs:sequence>
<xs:element name="customer" type="xs:string"/>
<xs:element name="orderdetails" type="xs:string"/>
<xs:element name="billto" type="xs:string"/>
<xs:element name="shipto" type="xs:string"/>
</xs:sequence>
</xs:group>
<xs:element name="order" type="ordertype"/>
<xs:complexType name="ordertype">
<xs:group ref="custGroup"/>
<xs:attribute name="status" type="xs:string"/>
</xs:complexType>
</xs:schema>❮ To‘liq XML Schema ma’lumotnomasi
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