test/cases/xbean/scomp/substGroup/OneLevel.xsd

<xsd:schema
     xmlns:xsd="http://www.w3.org/2001/XMLSchema"
     xmlns="http://xbean/scomp/substGroup/OneLevel"
     targetNamespace="http://xbean/scomp/substGroup/OneLevel"
    elementFormDefault="qualified"
     >
    <xsd:simpleType name="colorType">
        <xsd:restriction base="xsd:string">
            <xsd:pattern value="blue|purple"/>
        </xsd:restriction>
    </xsd:simpleType>

    <xsd:complexType name="ItemType">
        <xsd:sequence>
            <xsd:element ref="product" maxOccurs="4"/>
        </xsd:sequence>
    </xsd:complexType>

    <xsd:complexType name="productType">
        <xsd:sequence>
            <xsd:element name="number" type="xsd:token"/>
            <xsd:element name="name" type="xsd:string"/>
        </xsd:sequence>
    </xsd:complexType>

    <xsd:complexType name="shirtType">
       <xsd:complexContent>
           <xsd:extension base="productType">
              <xsd:sequence>
                  <xsd:element name="size" type="xsd:positiveInteger"/>
                  <xsd:element name="color" type="colorType"/>
              </xsd:sequence>
           </xsd:extension>
       </xsd:complexContent>
    </xsd:complexType>

      <xsd:complexType name="hatType">
       <xsd:complexContent>
           <xsd:extension base="productType">
              <xsd:sequence>
                  <xsd:element name="size" type="xsd:positiveInteger"/>
              </xsd:sequence>
           </xsd:extension>
       </xsd:complexContent>
    </xsd:complexType>

 <xsd:element name="umbrella" substitutionGroup="product"/>
 <xsd:element name="shirt" type="shirtType" substitutionGroup="product"/>
 <xsd:element name="hat" type="hatType" substitutionGroup="product"/>
 <xsd:element name="product" type="productType"/>
 <xsd:element name="items" type="ItemType"/>
</xsd:schema>