<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    xmlns="http://www.oracolo.it/i-ching"
    targetNamespace="http://www.oracolo.it/i-ching"
    elementFormDefault="qualified"
    > <!-- poichè vi è un namespace di default in i-ching, vuol dire che i child di i-ching sono tutti
    qualificati, quindi devo qualificarli con elementFormDefault -->

    <xsd:element name="i-ching" type="Type_i-ching"/>
    <xsd:element name="predizione" type="Type_predizione"/>
    <xsd:element name="esagramma" type="Type_esagramma"/>
    <xsd:element name="trigramma" type="Type_trigramma"/>
    <xsd:element name="yang" type="Type_yang"/>
    <xsd:element name="yin" type="Type_yin"/>
    <xsd:element name="significato" type="Type_significato"/>
    <xsd:element name="enfasi" type="Type_enfasi"/>

    <xsd:complexType name="Type_i-ching">
        <xsd:sequence>
            <xsd:element ref="predizione" minOccurs="2" maxOccurs="64"/>
        </xsd:sequence>
    </xsd:complexType>

    <xsd:complexType name="Type_predizione">
        <xsd:sequence>
            <xsd:element ref="esagramma" minOccurs="1" maxOccurs="1"/>
            <xsd:element ref="significato" minOccurs="1" maxOccurs="1"/>
        </xsd:sequence>
    </xsd:complexType>

    <xsd:complexType name="Type_esagramma">
        <xsd:sequence>
            <xsd:element ref="trigramma" minOccurs="2" maxOccurs="2"/>
        </xsd:sequence>
        <xsd:attribute name="nome" type="xsd:string"/>
    </xsd:complexType>

    <xsd:complexType name="Type_trigramma">
        <xsd:sequence minOccurs="3" maxOccurs="3">
            <xsd:choice>
                <xsd:element ref="yang"/>
                <xsd:element ref="yin"/>
            </xsd:choice>
        </xsd:sequence>
    </xsd:complexType>

    <xsd:complexType name="Type_yang"/>
    <xsd:complexType name="Type_yin"/>

    <xsd:complexType name="Type_significato" mixed="true">
        <xsd:sequence>
            <xsd:element ref="enfasi" minOccurs="0" maxOccurs="unbounded"/>
        </xsd:sequence>
    </xsd:complexType>

    <xsd:complexType name="Type_enfasi" mixed="true">
        <xsd:sequence>
            <xsd:element ref="enfasi" minOccurs="0" maxOccurs="unbounded"/>
        </xsd:sequence>
    </xsd:complexType>

</xsd:schema>