<xsd:schema
    xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns="http://xbean/scomp/derivation/GroupRestriction"
    targetNamespace="http://xbean/scomp/derivation/GroupRestriction"
    xmlns:base="http://xbean/scomp/contentType/ModelGroup"
    >
    <xsd:import namespace="http://xbean/scomp/contentType/ModelGroup"
        schemaLocation="../contentType/Group.xsd"/>


    <xsd:complexType name="restrictedSequenceT">
        <xsd:complexContent>
            <xsd:restriction base="base:SequenceT">
                <xsd:sequence>
                    <xsd:element name="child1" type="xsd:integer" minOccurs="1"/>
                    <xsd:element name="child3" type="xsd:integer" minOccurs="1"
                        maxOccurs="2"/>
                 </xsd:sequence>
            </xsd:restriction>
        </xsd:complexContent>
    </xsd:complexType>

    <!--elts must be a subset of the original choice group-->
    <xsd:complexType name="restrictedChoiceT">
        <xsd:complexContent>
            <xsd:restriction base="base:ChoiceT">
                <xsd:choice>
                    <xsd:element name="child3" type="xsd:integer" minOccurs="1"
                        maxOccurs="2"/>
                </xsd:choice>
            </xsd:restriction>
        </xsd:complexContent>
    </xsd:complexType>

     <xsd:complexType name="restrictedAllT">
        <xsd:complexContent>
            <xsd:restriction base="base:AllT">
                    <xsd:all>
                    <xsd:element name="child2" type="xsd:string" maxOccurs="1"/>
                    <xsd:element name="child3" type="xsd:integer" minOccurs="1"/>
                </xsd:all>
            </xsd:restriction>
        </xsd:complexContent>
    </xsd:complexType>

    <!--examples from Walmsley book p. 327-->
    <xsd:complexType name="replaceableChoiceT">
        <xsd:choice maxOccurs="2">
            <xsd:element name="a" type="xsd:string"/>
            <xsd:element name="b" type="xsd:string"/>
            <xsd:element name="c" type="xsd:int"/>
        </xsd:choice>
    </xsd:complexType>


    <xsd:complexType name="replaceableAllT">
        <xsd:all>
            <xsd:element name="a" type="xsd:string" minOccurs="1"/>
            <xsd:element name="b" type="xsd:string" minOccurs="0"/>
            <xsd:element name="c" type="xsd:int"/>
        </xsd:all>
    </xsd:complexType>

    <!--replace All group with sequence group-->
    <xsd:complexType name="All2SequenceT">
        <xsd:complexContent>
            <xsd:restriction base="replaceableAllT">
                <xsd:sequence>
                    <xsd:element name="a" type="xsd:string"/>
                    <xsd:element name="c" type="xsd:int"/>
                </xsd:sequence>
            </xsd:restriction>
        </xsd:complexContent>
    </xsd:complexType>
    <!--replace choice group with sequence group-->
    <xsd:complexType name="Choice2SequenceT">
        <xsd:complexContent>
            <xsd:restriction base="replaceableChoiceT">
                <xsd:sequence>
                    <xsd:element name="a" type="xsd:string"/>
                    <xsd:element name="c" type="xsd:int"/>
                </xsd:sequence>
            </xsd:restriction>
        </xsd:complexContent>
    </xsd:complexType>

    <xsd:element name="RestrictedSequenceElt" type="restrictedSequenceT"/>
    <xsd:element name="RestrictedChoiceElt" type="restrictedChoiceT"/>
    <xsd:element name="RestrictedAllElt" type="restrictedAllT"/>
    <xsd:element name="Choice2SeqElt" type="Choice2SequenceT"/>
    <xsd:element name="All2SeqElt" type="All2SequenceT"/>


</xsd:schema>