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

<!--
 ~  Copyright 2017 Red Hat, Inc.
 ~
 ~  Licensed under the Apache License, Version 2.0 (the "License");
 ~  you may not use this file except in compliance with the License.
 ~  You may obtain a copy of the License at
 ~
 ~    http://www.apache.org/licenses/LICENSE-2.0
 ~
 ~  Unless required by applicable law or agreed to in writing, software
 ~  distributed under the License is distributed on an "AS IS" BASIS,
 ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 ~  See the License for the specific language governing permissions and
 ~  limitations under the License.
  -->

<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
            targetNamespace="urn:wildfly:microprofile-config:1.0"
            xmlns="urn:wildfly:microprofile-config:1.0"
            elementFormDefault="qualified"
            attributeFormDefault="unqualified"
            version="1.0">

    <!-- 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:choice>
                        <xs:attribute name="ordinal" type="xs:nonNegativeInteger" use="optional" />
                        <xs:attribute name="dir" type="xs:string" 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>
