<?xml version="1.0" encoding="UTF-8"?>

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<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
            targetNamespace="urn:wildfly:microprofile-config-smallrye:2.0"
            xmlns="urn:wildfly:microprofile-config-smallrye:2.0"
            elementFormDefault="qualified"
            attributeFormDefault="unqualified"
            version="2.0">

    <!-- The subsystem root element -->
    <xs:element name="subsystem">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="config-source" minOccurs="0" maxOccurs="unbounded">
                    <xs:complexType>
                        <xs:choice>
                            <xs:sequence>
                                <xs:element name="property" minOccurs="0" maxOccurs="unbounded">
                                    <xs:complexType>
                                        <xs:attribute name="name" type="xs:string" use="required" />
                                        <xs:attribute name="value" type="xs:string" use="required" />
                                    </xs:complexType>
                                </xs:element>
                            </xs:sequence>
                            <xs:element name="class" type="classType" minOccurs="0" maxOccurs="1" />
                            <xs:element name="dir" minOccurs="0" maxOccurs="1">
                                <xs:complexType>
                                    <xs:attribute name="path" type="xs:string" use="required" />
                                    <xs:attribute name="relative-to" type="xs:string" />
                                    <xs:attribute name="root" type="xs:boolean" default="false"/>
                                </xs:complexType>
                            </xs:element>
                        </xs:choice>
                        <xs:attribute name="ordinal" type="xs:nonNegativeInteger" use="optional" />
                        <xs:attribute name="name" type="xs:string" use="required" />
                    </xs:complexType>
                </xs:element>
                <xs:element name="config-source-provider" minOccurs="0" maxOccurs="unbounded">
                    <xs:complexType>
                        <xs:sequence>
                            <xs:element name="class" type="classType" minOccurs="0" maxOccurs="1" />
                        </xs:sequence>
                        <xs:attribute name="name" type="xs:string" use="required" />
                    </xs:complexType>
                </xs:element>
            </xs:sequence>
        </xs:complexType>
    </xs:element>

    <xs:complexType name="classType">
        <xs:attribute name="name" type="xs:string" use="required" />
        <xs:attribute name="module" type="xs:string" use="required" />
    </xs:complexType>
</xs:schema>
