XSD The <anyAttribute> Element
The <anyAttribute> element enables us to extend the XML document with attributes not specified by the schema!
The <anyAttribute> Element
The <anyAttribute> element enables us to extend the XML document with attributes not specified by the schema.
The following example is a fragment from an XML schema called "family.xsd".
It shows a declaration for the "person" element. By using the <anyAttribute> element we
can add any number of attributes to the "person" element:
<xs:element name="person">
<xs:complexType>
<xs:sequence>
<xs:element name="firstname" type="xs:string"/>
<xs:element name="lastname" type="xs:string"/>
</xs:sequence>
<xs:anyAttribute/>
</xs:complexType>
</xs:element> |
Now we want to extend the "person" element with a "gender" attribute. In this
case we can do so, even if the author of the schema above never declared any "gender" attribute.
Look at this schema file, called "attribute.xsd":
<?xml version="1.0" encoding="ISO-8859-1"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://www.w3schools.com"
xmlns="http://www.w3schools.com"
elementFormDefault="qualified">
<xs:attribute name="gender">
<xs:simpleType>
<xs:restriction base="xs:string">
<xs:pattern value="male|female"/>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:schema> |
The XML file below (called "Myfamily.xml"), uses components from
two different schemas; "family.xsd" and "attribute.xsd":
<?xml version="1.0" encoding="ISO-8859-1"?>
<persons xmlns="http://www.microsoft.com"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:SchemaLocation="http://www.microsoft.com family.xsd
http://www.w3schools.com attribute.xsd">
<person gender="female">
<firstname>Hege</firstname>
<lastname>Refsnes</lastname>
</person>
<person gender="male">
<firstname>Stale</firstname>
<lastname>Refsnes</lastname>
</person>
</persons> |
The XML file above is valid because the schema "family.xsd" allows us to
add an attribute to the "person" element.
The <any> and <anyAttribute> elements are used to make EXTENSIBLE
documents! They allow documents to contain additional elements that are not
declared in the main XML schema.
Stylus Studio® 2010 XML Enterprise Suite raises the bar for productivity in XML development tools.
Millions of XML developers and data integration specialists turn to Stylus Studio's comprehensive and intuitive
XML toolset to tackle today's advanced XML data transformation and aggregation challenges.
|
- XML Pipeline Editor, Debugger and Code Generator
- DataDirect XML Converters
- XQuery Mapper, Editor, Debugger, and Profiler
- XSLT Mapper, Editor, Debugger, Designer, and Profiler
- Java and C# for .Net Code Generation
- XML Schema Designer With Documentation Generator
- XML Editor With Full XPath Integration
Download a free trial now
|
| 
