Question

How can i validate the text length of the element that has an attribute.
E.g:

    <sport code="FB">Football</sport>

Now i need to restrict the possible values of the code attribute(like “FB”, “BB”, “TT”)
and also i need to restrict the possible values and length of the text(“Football”, “BasketBall”, “TableTennis”) and also the maximum length of these text(“Football”, “BasketBall”, “TableTennis”) can be 20.

I tried with

<complexType name="sport">
  <simpleContent>
    <extension base="string">
        <attribute name="code" type="code" />
    </extension>
  </simpleContent>
</complexType>
<simpleType name="code">
    <restriction base="string">
        <enumeration value="FB" />
        <enumeration value="BB" />
        <enumeration value="TT" />
    </restriction>
</simpleType>

But i cant validate the length of the text “Foolball” (also the possible values)
Can you please help about how to validate both the code and the text.
Thanks

Answer 1

I had this identical question, and was hopeful when I saw there was an accepted answer. However, that answer is exactly what I tried, but I was getting a schema invalid error. Apparently, you can’t restrict simpleContent within a complexType, only extend it. Additionally, you can’t have both an attribute and simpleContent within a complexType. Searching for examples in books around the office, I came up with a fix, which I adapted to this question in case someone else has this problem in the future:

<?xml version="1.0" encoding="ISO-8859-1" ?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
            xmlns:sp="http://www.ckhrysze.net/sports/1.0"
            targetNamespace="http://www.ckhrysze.net/sports/1.0"
        >

  <xsd:element name="sports">
    <xsd:complexType>
      <xsd:sequence>
        <xsd:element name="sport" type="sp:sportType" minOccurs="1" maxOccurs="unbounded" />
      </xsd:sequence>
    </xsd:complexType>
  </xsd:element>

  <xsd:complexType name="sportType">
    <xsd:simpleContent>
      <xsd:extension base="sp:sportEnumeration">
        <xsd:attribute name="code" type="sp:codeEnumeration" />
      </xsd:extension>
    </xsd:simpleContent>
  </xsd:complexType>

  <xsd:simpleType name="sportEnumeration">
    <xsd:restriction base="xsd:string">
      <xsd:enumeration value="Football" />
      <xsd:enumeration value="Basketball" />
    </xsd:restriction>
  </xsd:simpleType>

  <xsd:simpleType name="codeEnumeration">
    <xsd:restriction base="xsd:string">
      <xsd:enumeration value="FB" />
      <xsd:enumeration value="BB" />
    </xsd:restriction>
  </xsd:simpleType>

</xsd:schema>