<?xml version="1.0" encoding="UTF-8" ?>
<!--
 Copyright (c) 2000-2021 Ericsson Telecom AB
 All rights reserved. This program and the accompanying materials
 are made available under the terms of the Eclipse Public License v2.0
 which accompanies this distribution, and is available at
 https://www.eclipse.org/org/documents/epl-2.0/EPL-2.0.html

 Contributors:
  Balasko, Jeno
  Ormandi, Matyas
-->
   <xs:schema
   targetNamespace="urn:ietf:params:xml:ns:conference-info"
   xmlns:tns="urn:ietf:params:xml:ns:conference-info"
   xmlns:xs="http://www.w3.org/2001/XMLSchema"
   xmlns="urn:ietf:params:xml:ns:conference-info"
   elementFormDefault="qualified"
   attributeFormDefault="unqualified">
 
   <!--
     CONFERENCE ELEMENT
   -->
      <xs:element name="conference-info" type="conference-type"/>
      <!--
         CONFERENCE TYPE
      -->
      <xs:complexType name="conference-type">
       <xs:sequence>
        <xs:element name="conference-description"
         type="conference-description-type" minOccurs="0"/>
        <xs:element name="host-info"
         type="host-type" minOccurs="0"/>
        <xs:element name="conference-state"
         type="conference-state-type" minOccurs="0"/>
        <xs:element name="users"
         type="users-type" minOccurs="0"/>
        <xs:element name="sidebars-by-ref"
         type="uris-type" minOccurs="0"/>
        <xs:element name="sidebars-by-val"
         type="sidebars-by-val-type" minOccurs="0"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute name="entity"
        type="xs:anyURI" use="required"/>
       <xs:attribute name="state"
        type="state-type" use="optional" default="full"/>
       <xs:attribute name="attr"
        type="xs:unsignedInt" use="optional"/>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         STATE TYPE
      -->
      <xs:simpleType name="state-type">
       <xs:restriction base="xs:string">
        <xs:enumeration value="full"/>
        <xs:enumeration value="partial"/>
        <xs:enumeration value="deleted"/>
       </xs:restriction>
      </xs:simpleType>
      <!--
         CONFERENCE DESCRIPTION TYPE
      -->
      <xs:complexType name="conference-description-type">
       <xs:sequence>
        <xs:element name="display-text"
         type="xs:string" minOccurs="0"/>
        <xs:element name="subject"
         type="xs:string" minOccurs="0"/>
        <xs:element name="free-text"
         type="xs:string" minOccurs="0"/>
        <xs:element name="keywords"
         type="keywords-type" minOccurs="0"/>
        <xs:element name="conf-uris"
         type="uris-type" minOccurs="0"/>
        <xs:element name="service-uris"
         type="uris-type" minOccurs="0"/>
        <xs:element name="maximum-user-count"
         type="xs:unsignedInt" minOccurs="0"/>
        <xs:element name="available-media"
         type="conference-media-type" minOccurs="0"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         HOST TYPE
      -->
      <xs:complexType name="host-type">
       <xs:sequence>
        <xs:element name="display-text" type="xs:string"
         minOccurs="0"/>
        <xs:element name="web-page" type="xs:anyURI"
         minOccurs="0"/>
        <xs:element name="uris" type="uris-type"
         minOccurs="0"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         CONFERENCE STATE TYPE
      -->
      <xs:complexType name="conference-state-type">
       <xs:sequence>
        <xs:element name="user-count" type="xs:unsignedInt"
         minOccurs="0"/>
        <xs:element name="active" type="xs:boolean"
         minOccurs="0"/>
        <xs:element name="locked" type="xs:boolean"
         minOccurs="0"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         CONFERENCE MEDIA TYPE
      -->
      <xs:complexType name="conference-media-type">
       <xs:sequence>
        <xs:element name="entry" type="conference-medium-type"
         maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         CONFERENCE MEDIUM TYPE
      -->
      <xs:complexType name="conference-medium-type">
       <xs:sequence>
        <xs:element name="display-text" type="xs:string"
         minOccurs="0"/>
        <xs:element name="type" type="xs:string"/>
        <xs:element name="status" type="media-status-type"
         minOccurs="0"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute name="label" type="xs:string"
        use="required"/>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         URIs TYPE
      -->
      <xs:complexType name="uris-type">
       <xs:sequence>
        <xs:element name="entry" type="uri-type"
         maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute name="state" type="state-type"
        use="optional" default="full"/>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         URI TYPE
      -->
      <xs:complexType name="uri-type">
       <xs:sequence>
        <xs:element name="uri" type="xs:anyURI"/>
        <xs:element name="display-text" type="xs:string"
         minOccurs="0"/>
        <xs:element name="purpose" type="xs:string"
         minOccurs="0"/>
        <xs:element name="modified" type="execution-type"
         minOccurs="0"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         KEYWORDS TYPE
      -->
      <xs:simpleType name="keywords-type">
       <xs:list itemType="xs:string"/>
      </xs:simpleType>
      <!--
         USERS TYPE
      -->
      <xs:complexType name="users-type">
       <xs:sequence>
        <xs:element name="user" type="user-type"
         minOccurs="0" maxOccurs="unbounded"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute name="state" type="state-type"
        use="optional" default="full"/>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         USER TYPE
      -->
      <xs:complexType name="user-type">
       <xs:sequence>
        <xs:element name="display-text" type="xs:string"
         minOccurs="0"/>
        <xs:element name="associated-aors" type="uris-type"
         minOccurs="0"/>
        <xs:element name="roles" type="user-roles-type"
         minOccurs="0"/>
        <xs:element name="languages" type="user-languages-type"
         minOccurs="0"/>
        <xs:element name="cascaded-focus" type="xs:anyURI"
         minOccurs="0"/>
        <xs:element name="endpoint" type="endpoint-type"
         minOccurs="0" maxOccurs="unbounded"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute name="entity" type="xs:anyURI"/>
       <xs:attribute name="state" type="state-type"
        use="optional" default="full"/>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         USER ROLES TYPE
      -->
      <xs:complexType name="user-roles-type">
       <xs:sequence>
        <xs:element name="entry" type="xs:string"
         maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         USER LANGUAGES TYPE
      -->
      <xs:simpleType name="user-languages-type">
       <xs:list itemType="xs:language"/>
      </xs:simpleType>
      <!--
         ENDPOINT TYPE
      -->
      <xs:complexType name="endpoint-type">
       <xs:sequence>
        <xs:element name="display-text" type="xs:string"
         minOccurs="0"/>
        <xs:element name="referred" type="execution-type"
         minOccurs="0"/>
        <xs:element name="status" type="endpoint-status-type"
         minOccurs="0"/>
        <xs:element name="joining-method" type="joining-type"
         minOccurs="0"/>
        <xs:element name="joining-info"
         type="execution-type"
         minOccurs="0"/>
        <xs:element name="disconnection-method"
         type="disconnection-type"
         minOccurs="0"/>
        <xs:element name="disconnection-info"
         type="execution-type"
         minOccurs="0"/>
        <xs:element name="media" type="media-type"
         minOccurs="0" maxOccurs="unbounded"/>
        <xs:element name="call-info" type="call-type"
         minOccurs="0"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute name="entity" type="xs:string"/>
       <xs:attribute name="state" type="state-type"
        use="optional" default="full"/>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         ENDPOINT STATUS TYPE
      -->
      <xs:simpleType name="endpoint-status-type">
       <xs:restriction base="xs:string">
        <xs:enumeration value="pending"/>
        <xs:enumeration value="dialing-out"/>
        <xs:enumeration value="dialing-in"/>
        <xs:enumeration value="alerting"/>
        <xs:enumeration value="on-hold"/>
        <xs:enumeration value="connected"/>
        <xs:enumeration value="muted-via-focus"/>
        <xs:enumeration value="disconnecting"/>
        <xs:enumeration value="disconnected"/>
       </xs:restriction>
      </xs:simpleType>
      <!--
         JOINING TYPE
      -->
      <xs:simpleType name="joining-type">
       <xs:restriction base="xs:string">
        <xs:enumeration value="dialed-in"/>
        <xs:enumeration value="dialed-out"/>
        <xs:enumeration value="focus-owner"/>
       </xs:restriction>
      </xs:simpleType>
      <!--
         DISCONNECTION TYPE
      -->
      <xs:simpleType name="disconnection-type">
       <xs:restriction base="xs:string">
        <xs:enumeration value="departed"/>
        <xs:enumeration value="booted"/>
        <xs:enumeration value="failed"/>
        <xs:enumeration value="busy"/>
       </xs:restriction>
      </xs:simpleType>
      <!--
         EXECUTION TYPE
      -->
      <xs:complexType name="execution-type">
       <xs:sequence>
        <xs:element name="when" type="xs:dateTime"
         minOccurs="0"/>
        <xs:element name="reason" type="xs:string"
         minOccurs="0"/>
        <xs:element name="by" type="xs:anyURI"
         minOccurs="0"/>
       </xs:sequence>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
     <!--
         CALL TYPE
      -->
      <xs:complexType name="call-type">
       <xs:choice>
        <xs:element name="sip" type="sip-dialog-id-type"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:choice>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         SIP DIALOG ID TYPE
      -->
      <xs:complexType name="sip-dialog-id-type">
       <xs:sequence>
        <xs:element name="display-text" type="xs:string"
         minOccurs="0"/>
        <xs:element name="call-id" type="xs:string"/>
        <xs:element name="from-tag" type="xs:string"/>
        <xs:element name="to-tag" type="xs:string"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         MEDIA TYPE
      -->
      <xs:complexType name="media-type">
       <xs:sequence>
        <xs:element name="display-text" type="xs:string"
         minOccurs="0"/>
        <xs:element name="type" type="xs:string"
         minOccurs="0"/>
        <xs:element name="label" type="xs:string"
         minOccurs="0"/>
        <xs:element name="src-id" type="xs:string"
         minOccurs="0"/>
        <xs:element name="status" type="media-status-type"
         minOccurs="0"/>
        <xs:any namespace="##other" processContents="lax"
         minOccurs="0" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute name="id" type="xs:string"
        use="required"/>
       <xs:anyAttribute namespace="##other" processContents="lax"/>
      </xs:complexType>
      <!--
         MEDIA STATUS TYPE
      -->
      <xs:simpleType name="media-status-type">
       <xs:restriction base="xs:string">
        <xs:enumeration value="recvonly"/>
        <xs:enumeration value="sendonly"/>
        <xs:enumeration value="sendrecv"/>
        <xs:enumeration value="inactive"/>
       </xs:restriction>
      </xs:simpleType>
       <!--
         SIDEBARS BY VAL TYPE
       -->
       <xs:complexType name="sidebars-by-val-type">
        <xs:sequence>
         <xs:element name="entry" type="conference-type"
          minOccurs="0" maxOccurs="unbounded"/>
        </xs:sequence>
        <xs:attribute name="state" type="state-type"
         use="optional" default="full"/>
        <xs:anyAttribute namespace="##other" processContents="lax"/>
       </xs:complexType>
      </xs:schema>
