src/content/ns/oauth/metadata/1.xsd

<?xml version="1.0" encoding="UTF-8"?>
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<xsd:schema
targetNamespace="https://netbeans.org/ns/oauth/metadata/1"
xmlns:xsd="http://www.w3.org/2001/XMLSchema"
xmlns:oauth="https://netbeans.org/ns/oauth/metadata/1"
elementFormDefault="qualified">

   <xsd:element name="metadata" type="oauth:metadata"/>

   <xsd:complexType name="metadata">
       <xsd:annotation>
         <xsd:documentation>
           root element: specifies OAuth authentication flow and OAuth parameters;
         </xsd:documentation>
       </xsd:annotation>
       <xsd:sequence>
           <xsd:element name="flow" type="oauth:flowType"/>
           <xsd:element name="param" type="oauth:paramType" minOccurs="0" maxOccurs="unbounded"/>
       </xsd:sequence>
       <xsd:attribute name="base-url" type="xsd:anyURI" use="required"/>
       <xsd:attribute name="signature-method" type="oauth:signature-methodType" use="required"/>
       <xsd:attribute name="version" type="xsd:string"/> <!-- default: 1.0 -->
       <xsd:attribute name="nonce" type="xsd:boolean"/> <!-- default: true -->
       <xsd:attribute name="timestamp" type="xsd:boolean"/> <!-- default: true -->
   </xsd:complexType>

   <xsd:complexType name="flowType">
       <xsd:annotation>
         <xsd:documentation>
           specifies 3 phases of OAuth authentication mechanism:
           1. obtaining request-token,
           2. consumer authorization and getting access-token
           3. obtaining access-token
         </xsd:documentation>
       </xsd:annotation>
       <xsd:sequence>
           <xsd:element name="request-token" type="oauth:methodType" />
           <xsd:element name="authorization" type="oauth:authorizationType" />
           <xsd:element name="access-token" type="oauth:methodType"/>
       </xsd:sequence>
   </xsd:complexType>

   <xsd:complexType name="methodType">
       <xsd:annotation>
         <xsd:documentation>
           specifies REST method used to obtain (request/access) token.
         </xsd:documentation>
       </xsd:annotation>
       <xsd:attribute name="method-name" type="xsd:string" use="required"/>
       <xsd:attribute name="request-style" use="required">
         <xsd:simpleType>
           <xsd:restriction base="xsd:string">
             <xsd:enumeration value="FORM"/>
             <xsd:enumeration value="PATH"/>
             <xsd:enumeration value="QUERY"/>
             <xsd:enumeration value="HEADER"/>
           </xsd:restriction>
         </xsd:simpleType>
       </xsd:attribute>
       <!-- request parameter. Default: "method" -->
       <xsd:attribute name="request-param" type="xsd:string"/>
       <xsd:attribute name="response-style" use="required">
         <xsd:simpleType>
           <xsd:restriction base="xsd:string">
             <xsd:enumeration value="FORM"/>
             <xsd:enumeration value="XML"/>
             <xsd:enumeration value="JSON"/>
           </xsd:restriction>
         </xsd:simpleType>
       </xsd:attribute>
       <xsd:attribute name="signature-method" type="oauth:signature-methodType"/>
       <xsd:attribute name="version" type="xsd:string"/> <!-- default: 1.0 -->
       <xsd:attribute name="nonce" type="xsd:boolean"/> <!-- default: true -->
       <xsd:attribute name="timestamp" type="xsd:boolean"/> <!-- default: true -->
       <xsd:attribute name="callback" type="xsd:boolean"/> <!-- default: false -->
       <xsd:attribute name="verifier" type="xsd:boolean"/> <!-- default: false -->
   </xsd:complexType>

     <xsd:complexType name="authorizationType">
       <xsd:annotation>
         <xsd:documentation>
           specifies authorization step, that can be either
           1. fixed-url URL with one ore more OAuth parameters
           2. dynamic-url obtained during first step (request-token)
         </xsd:documentation>
       </xsd:annotation>
       <xsd:sequence>
           <xsd:choice>
               <xsd:element name="fixed-url" type="oauth:fixed-urlType"/>
               <xsd:element name="dynamic-url" type="oauth:dynamic-urlType"/>
           </xsd:choice>
           <xsd:element name="param" type="oauth:paramType" minOccurs="0" maxOccurs="unbounded"/>
       </xsd:sequence>
     </xsd:complexType>

     <xsd:complexType name="dynamic-urlType">
       <xsd:annotation>
         <xsd:documentation>
           specifies dynamic-url of authorization page,
           obtained during request-token step - as auth-param-name
         </xsd:documentation>
       </xsd:annotation>
       <xsd:attribute name="auth-param-name" type="xsd:string" use="required"/>
     </xsd:complexType>

     <xsd:complexType name="fixed-urlType">
       <xsd:annotation>
         <xsd:documentation>
           specifies fixed-url of authorization page
         </xsd:documentation>
       </xsd:annotation>
       <xsd:attribute name="url" type="xsd:anyURI" use="required"/>
     </xsd:complexType>

     <xsd:simpleType name="signature-methodType">
       <xsd:annotation>
         <xsd:documentation>
           signature method
         </xsd:documentation>
       </xsd:annotation>
       <xsd:restriction base="xsd:string">
         <xsd:enumeration value="HMAC_SHA1"/>
         <xsd:enumeration value="PLAINTEXT"/>
       </xsd:restriction>
     </xsd:simpleType>

     <xsd:complexType name="paramType">
         <xsd:attribute name="oauth-name" type="xsd:string" use="required"/>
         <xsd:attribute name="param-name" type="xsd:string"/>
         <xsd:attribute name="oauth-prefix" type="xsd:string"/>
         <xsd:attribute name="oauth-postfix" type="xsd:string"/>
         <xsd:attribute name="xpath" type="xsd:string"/>
     </xsd:complexType>

</xsd:schema>