Mega Code Archive

 

Categories / XML / XML Schema

 

Restriction on attribute

File: Data.xml <?xml version="1.0"?> <Books xmlns="http://www.rntsoft.com"            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"            xsi:schemaLocation="http://www.rntsoft.com Schema.xsd">         <Book Category="autobiography" InStock="true" Reviewer="R1">                 <Title>title 1</Title>                 <Author>author 1</Author>                 <Date>2008</Date>                 <ISBN>1-11111-111-1</ISBN>                 <Publisher>Publisher 1</Publisher>         </Book>         <Book Category = "fiction" InStock = "false" Reviewer = "R2">                 <Title>title 2</Title>                 <Author>author 2</Author>                 <Date>2007</Date>                 <ISBN>0-111-11111-1</ISBN>                 <Publisher>Publisher 2</Publisher>         </Book> </Books> File: Schema.xsd <?xml version="1.0"?> <xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"             targetNamespace="http://www.rntsoft.com"             xmlns="http://www.rntsoft.com"              elementFormDefault="qualified">     <xsd:element name="Books">         <xsd:complexType>             <xsd:sequence>                 <xsd:element name="Book" maxOccurs="unbounded">                     <xsd:complexType>                         <xsd:sequence>                             <xsd:element name="Title" type="xsd:string"/>                             <xsd:element name="Author" type="xsd:string" maxOccurs="unbounded"/>                             <xsd:element name="Date" type="xsd:string"/>                             <xsd:element name="ISBN" type="xsd:string"/>                             <xsd:element name="Publisher" type="xsd:string"/>                         </xsd:sequence>                         <xsd:attributeGroup ref="BookAttributes"/>                     </xsd:complexType>                 </xsd:element>             </xsd:sequence>         </xsd:complexType>     </xsd:element>     <xsd:attributeGroup name="BookAttributes">          <xsd:attribute name="Category" use="required">             <xsd:simpleType>                 <xsd:restriction base="xsd:string">                     <xsd:enumeration value="autobiography"/>                     <xsd:enumeration value="non-fiction"/>                     <xsd:enumeration value="fiction"/>                 </xsd:restriction>             </xsd:simpleType>         </xsd:attribute>          <xsd:attribute name="InStock" type="xsd:boolean" default="false"/>         <xsd:attribute name="Reviewer" type="xsd:string" default="none"/>     </xsd:attributeGroup> </xsd:schema>