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== Deriving by Restriction==



<source lang="xml">
<xsd:complexType name="nameType">
<xsd:sequence>
<xsd:element name="firstName" type="xsd:string"/>
<xsd:element name="middleName" type="xsd:string"/>
<xsd:element name="lastName" type="xsd:string"/>
</xsd:sequence>
</xsd:complexType>
<xsd:complexType name="nameTypeRestricted">
<xsd:complexContent>
<xsd:restriction base="nameType">
<xsd:sequence>
<xsd:element name="firstName" type="xsd:string"/>
<xsd:element name="lastName" type="xsd:string"/>
</xsd:sequence>
</xsd:restriction>
</xsd:complexContent>
</xsd:complexType></source>

== Deriving Custom Simple Types==



<source lang="xml">
File: Schema.xsd
<?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="zipcodeType">
<xs:restriction base="xs:string">
<xs:pattern value="\d{5}(-\d{4})?" />
</xs:restriction>
</xs:simpleType>
<xs:element name="zipcode" type="zipcodeType" />
</xs:schema>

File: Data.xml (Both of these zipcode elements are valid.)
<?xml version="1.0"?>
<zipcode>11111</zipcode>
<zipcode>11111-0987</zipcode>
File: Data.xml (Both of these zipcode elements are invalid.)
<?xml version="1.0"?>
<zipcode>1111-12349</zipcode>
<zipcode>111001</zipcode></source>

== restriction specifies values for zero or more constraining facets==



<source lang="xml">

<xsd:element name="grades">
<xsd:simpleType>
<xsd:restriction base="xsd:string">
<xsd:enumeration value="A"/>
<xsd:enumeration value="B"/>
<xsd:enumeration value="C"/>
<xsd:enumeration value="D"/>
<xsd:enumeration value="F"/>
</xsd:restriction>
</xsd:simpleType>
</xsd:element></source>

== Restriction types are declared using the <restriction> declaration.==



<source lang="xml">
<restriction base="name of the simpleType you are deriving from">

A derived type declared using the <restriction> declaration is a subset of its base type.
Facets control all simple types within XML Schemas.
A facet is a single property or trait of a <simpleType>.
For example, the built-in numeric type nonNegativeIntegerwas created by deriving from the built-in Integer type and setting the facet minInclusiveto zero.

There are 12 constraining facets, described in the following table:
Facet
minExclusive
minInclusive
maxExclusive
maxInclusive
totalDigits
fractionDigits
length
minLength
maxLength
enumeration
whiteSpace
pattern

Within a <restriction> declaration, you must specify the type you are restricting using the base attribute.
The base attribute is a reference to a global <simpleType> definition or built-in XML Schema datatype.
<attribute name="kind">
<simpleType>
<restriction base="string">
<enumeration value="Home" />
<enumeration value="Work" />
<enumeration value="Cell" />
<enumeration value="Fax" />
</restriction>
</simpleType>
</attribute></source>

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Admin: 1 версия

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