XML 스키마 확장 요소
❮ 완전한 XML 스키마 참조
정의 및 사용
확장 요소는 기존 simpleType 또는 complexType 요소를 확장합니다.
요소 정보
- 상위 요소: simpleContent, complexContent
통사론
<extension
id=ID
base=QName
any attributes
>
(annotation?,((group|all|choice|sequence)?,
((attribute|attributeGroup)*,anyAttribute?)))
</extension>
(? 기호는 요소가 0번 또는 1번 발생할 수 있음을 선언하고 * 기호는 요소가 확장 요소 내에서 0번 이상 발생할 수 있음을 선언합니다)
Attribute | Description |
---|---|
id | Optional. Specifies a unique ID for the element |
base | Required. Specifies the name of a built-in data type, a simpleType element, or a complexType element |
any attributes | Optional. Specifies any other attributes with non-schema namespace |
실시예 1
다음 예제는 속성을 추가하여 기존 simpleType을 확장합니다.
<?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>
실시예 2
다음 예제는 세 개의 요소를 추가하여 기존 complexType 요소를 확장합니다.
<?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>
❮ 완전한 XML 스키마 참조