XSD: how to restrict number of characters in string type attribute?

xml xsd
Ankush picture Ankush · Jun 8, 2009 · Viewed 97.9k times · Source

I have a question regarding adding restriction in my xml schema(xsd). I have a complex-type like:

<xsd:complexType name="xxx">
   <xsd:attribute/>
   .....
</xsd:complexType>

I have many attributes in this complex-type, and few of them are of string type. Now I want those string type attributes to be restricted to y no. of chars, how do I add this restriction?

Thanks! -Ankush

Answer

marc_s picture marc_s · Jun 8, 2009

You need to create a simple type like so:

  <xs:simpleType name="LimitedString">
    <xs:restriction base="xs:string">
      <xs:maxLength value="50" />
    </xs:restriction>
  </xs:simpleType>

and then use this new type in your schema:

  <xs:complexType name="test">
    <xs:sequence>
      <xs:element name="abc" type="xs:String" />
    </xs:sequence>
    <xs:attribute type="LimitedString" name="myattr" />
  </xs:complexType>

Marc

Related questions

Using Notepad++ to validate XML against an XSD

Can someone explain how to use Notepad++ to validate an xml file against an xsd. There are no options in the "XML Tools" plugin dropdown that provides for specifying an XSD file. The XML plugin is installed properly in the …

Read More
Generate Java classes from .XSD files...?

I have a gigantic QuickBooks SDK .XSD schema file which defines XML requests/responses that I can send/receive from QuickBooks. I'd like to be able to easily generate Java classes from these .XSD files, which I could then use …

Read More
What's the best way to validate an XML file against an XSD file?

I'm generating some xml files that needs to conform to an xsd file that was given to me. What's the best way to verify they conform?

Read More