<xs:schema targetNamespace="http://ltsc.ieee.org/xsd/LOM"
           xmlns="http://ltsc.ieee.org/xsd/LOM"
           xmlns:ag="http://ltsc.ieee.org/xsd/LOM/unique"
           xmlns:ex="http://ltsc.ieee.org/xsd/LOM/extend"
           xmlns:voc="http://ltsc.ieee.org/xsd/LOM/vocab"
           xmlns:xs="http://www.w3.org/2001/XMLSchema"
           elementFormDefault="qualified"
           version="IEEE LTSC LOM XML 1.0">

   <xs:annotation>
      <xs:documentation>
         This work is licensed under the Creative Commons Attribution-ShareAlike
         License.  To view a copy of this license, see the file license.txt,
         visit http://creativecommons.org/licenses/by-sa/1.0 or send a letter to
         Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.
      </xs:documentation>

      <xs:documentation>
         This component schema provides global type declarations for those metadata
         elements whose values are taken from a vocabulary datatype.
      </xs:documentation>
   </xs:annotation>

   <xs:import namespace="http://ltsc.ieee.org/xsd/LOM/unique"/>
   <xs:import namespace="http://ltsc.ieee.org/xsd/LOM/extend"/>
   <xs:import namespace="http://ltsc.ieee.org/xsd/LOM/vocab"/>

   <!-- Vocabulary type declarations -->

   <!-- Source -->
   <xs:complexType name="sourceValue">
      <xs:simpleContent>
         <xs:extension base="voc:source">
            <xs:attributeGroup ref="ag:source"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 1.7 Structure -->
   <xs:complexType name="structureVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="structureValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>
  
   <xs:complexType name="structureValue">
      <xs:simpleContent>
         <xs:extension base="voc:structure">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 1.8 Aggregation Level -->
   <xs:complexType name="aggregationLevelVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="aggregationLevelValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>
  
   <xs:complexType name="aggregationLevelValue">
      <xs:simpleContent>
         <xs:extension base="voc:aggregationLevel">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 2.2 Status -->
   <xs:complexType name="statusVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="statusValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="statusValue">
      <xs:simpleContent>
         <xs:extension base="voc:status">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 2.3.1 Role -->
   <xs:complexType name="roleVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="roleValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="roleValue">
      <xs:simpleContent>
         <xs:extension base="voc:role">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 3.2.1 Role -->
   <xs:complexType name="roleMetaVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="roleMetaValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>
 
   <xs:complexType name="roleMetaValue">
      <xs:simpleContent>
         <xs:extension base="voc:roleMeta">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 4.4.1.1 Type -->
   <xs:complexType name="typeVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="typeValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="typeValue">
      <xs:simpleContent>
         <xs:extension base="voc:type">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 4.4.1.2 Name -->
   <xs:complexType name="nameVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="nameValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="nameValue">
      <xs:simpleContent>
         <xs:extension base="voc:name">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 5.1 Interactivity Type -->
   <xs:complexType name="interactivityTypeVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="interactivityTypeValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="interactivityTypeValue">
      <xs:simpleContent>
         <xs:extension base="voc:interactivityType">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 5.2 Learning Resource Type -->
   <xs:complexType name="learningResourceTypeVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="learningResourceTypeValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="learningResourceTypeValue">
      <xs:simpleContent>
         <xs:extension base="voc:learningResourceType">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 5.3 Interactivity Level -->
   <xs:complexType name="interactivityLevelVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="interactivityLevelValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="interactivityLevelValue">
      <xs:simpleContent>
         <xs:extension base="voc:interactivityLevel">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 5.4 Semantic Density -->
   <xs:complexType name="semanticDensityVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="semanticDensityValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="semanticDensityValue">
      <xs:simpleContent>
         <xs:extension base="voc:semanticDensity">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 5.5 Intended End User Role -->
   <xs:complexType name="intendedEndUserRoleVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="intendedEndUserRoleValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="intendedEndUserRoleValue">
      <xs:simpleContent>
         <xs:extension base="voc:intendedEndUserRole">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 5.6 Context -->
   <xs:complexType name="contextVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="contextValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="contextValue">
      <xs:simpleContent>
         <xs:extension base="voc:context">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 5.8 Difficulty -->
   <xs:complexType name="difficultyVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="difficultyValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="difficultyValue">
      <xs:simpleContent>
         <xs:extension base="voc:difficulty">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 6.1 Cost -->
   <xs:complexType name="costVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="costValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="costValue">
      <xs:simpleContent>
         <xs:extension base="voc:cost">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 6.2 Copyright and Other Restrictions -->
   <xs:complexType name="copyrightAndOtherRestrictionsVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="copyrightAndOtherRestrictionsValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="copyrightAndOtherRestrictionsValue">
      <xs:simpleContent>
         <xs:extension base="voc:copyrightAndOtherRestrictions">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 7.1 Kind -->
   <xs:complexType name="kindVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="kindValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="kindValue">
      <xs:simpleContent>
         <xs:extension base="voc:kind">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

   <!-- 9.1 Purpose -->
   <xs:complexType name="purposeVocab">
      <xs:choice minOccurs="0" maxOccurs="unbounded">
         <xs:element name="source" type="sourceValue"/>
         <xs:element name="value" type="purposeValue"/>
         <xs:group ref="ex:customElements"/>
      </xs:choice>
   </xs:complexType>

   <xs:complexType name="purposeValue">
      <xs:simpleContent>
         <xs:extension base="voc:purpose">
            <xs:attributeGroup ref="ag:value"/>
         </xs:extension>
      </xs:simpleContent>
   </xs:complexType>

</xs:schema>
