<?xml version="1.0" encoding="UTF-8"?>
<grammar datatypeLibrary="http://www.w3.org/2001/XMLSchema-datatypes"
         xmlns="http://relaxng.org/ns/structure/1.0"
         xmlns:rapla="http://rapla.sourceforge.net/rapla"
	     xmlns:doc="http://rapla.sourceforge.net/annotation"
         xmlns:relax="http://relaxng.org/ns/structure/1.0"
>
  <!-- include the relax-schema for the dynanmic-schemas.-->
  <include href="relax.rng"/>
  <start>
    <element name="rapla:data">
      <attribute name="version"/>
      <element name="rapla:categories">
        <zeroOrMore>
          <ref name="annotation"/>
        </zeroOrMore>
        <zeroOrMore>
          <ref name="category"/>
        </zeroOrMore>
      </element>
  
      <ref name="pattern"/>
       <optional>
	<element name="rapla:users">
	  <zeroOrMore>
	    <choice>
	      <ref name="user"/>
	    </choice>
	  </zeroOrMore>
	</element>
       </optional>
       <optional>
	<element name="rapla:filters">
	  <zeroOrMore>
	    <choice>
	      <ref name="reservationfilter"/>
	      <ref name="allocatablefilter"/>
	    </choice>
	  </zeroOrMore>
	</element>
       </optional>
       <optional>
	<element name="rapla:resources">
	  <zeroOrMore>
	    <choice>
	      <ref name="person"/>
	      <ref name="resource"/>
	    </choice>
	  </zeroOrMore>
	</element>
       </optional>
       <optional>
         <element name="rapla:periods">
           <zeroOrMore>
             <ref name="period"/>
           </zeroOrMore>
         </element>
       </optional>
       <optional>
         <element name="rapla:reservations">
           <zeroOrMore>
             <ref name="reservation"/>
           </zeroOrMore>
         </element>
       </optional>
    </element>
  </start>
  <define name="id">
    <attribute name="id"><data type="ID"/></attribute>
  </define>
  <define name="date.att">
    <group>
      <attribute name="date"><data type="date"/></attribute>
      <optional>
	<attribute name="time"><data type="time"/></attribute>
      </optional>
    </group>
  </define>

  <define name="category">
     <element name="rapla:category">
       <attribute name="key"/>
       <zeroOrMore>
         <ref name="annotation"/>
       </zeroOrMore>
       <zeroOrMore>
         <ref name="category"/>
       </zeroOrMore>
     </element> 
 </define>

  <define name="annotation">
     <element name="doc:name">
       <attribute name="lang"/>
       <text/>
     </element> 
   </define>

  <define name="user">
    <element name="rapla:user">
      <choice>
        <attribute name="idref"/>
        <group>
          <attribute name="id"/>
	  <attribute name="username"/>
	  <attribute name="password"/>
          <optional>
    	    <attribute name="name"/>
          </optional>
          <optional>
    	    <attribute name="email"/>
          </optional>
          <optional>
	    <zeroOrMore>
              <element name="rapla:role">
    	        <attribute name="name"/>
                <text/>
              </element>
	    </zeroOrMore>
          </optional>
          <optional>
            <element name="rapla:preferences">
  	      <zeroOrMore>
	        <ref name="anyElement"/>
 	      </zeroOrMore>
            </element>
          </optional>
        </group>
      </choice>
    </element>
  </define>

  <define name="anyElement">
    <element>
      <anyName/>
      <zeroOrMore>
	<choice>
	  <attribute>
	    <anyName/>
	  </attribute>
	  <text/>
	  <ref name="anyElement"/>
	</choice>
      </zeroOrMore>
    </element>
  </define>

  <!-- Elements of the rapla-dynamictype namespace will be ignore by -->
  <!-- this schema. They will be validated against the dynamic schemas.--> 
  <define name="dynamic.type">
     <element>
       <choice>
         <nsName ns="http://rapla.sourceforge.net/dynamictype"/>
         <nsName ns="http://rapla.sourceforge.net/annotation"/>
       </choice>
       <zeroOrMore>
	 <attribute>
	   <anyName/>
	 </attribute>
       </zeroOrMore>
       <choice>
         <zeroOrMore>
	   <ref name="dynamic.type"/>
         </zeroOrMore>
	 <text/>
       </choice>
     </element>
  </define>

  <define name="person">
    <element name="rapla:person">
      <choice>
         <attribute name="idref"><data type="IDREF"/></attribute>
         <group>
           <ref name="id"/>
           <ref name="dynamic.type"/>
           <optional>
             <attribute name="holdbackconflicts"/>
           </optional>
           <zeroOrMore>
  	     <ref name="permission"/>
           </zeroOrMore>
         </group>
      </choice>
    </element>
  </define>

  <define name="resource">
    <element name="rapla:resource">
      <choice>
         <attribute name="idref"><data type="IDREF"/></attribute>
         <group>
           <ref name="id"/>
           <ref name="dynamic.type"/>
           <optional>
             <attribute name="holdbackconflicts"/>
           </optional>
           <zeroOrMore>
  	     <ref name="permission"/>
           </zeroOrMore>
         </group>
      </choice>
    </element>
  </define>

  <define name="permission">
    <element name="rapla:permission">
      <group>
        <optional>
          <attribute name="user"/>
        </optional>
        <optional>
          <attribute name="group"/>
        </optional>
        <optional>
          <attribute name="start-date"/>
        </optional>
        <optional>
          <attribute name="end-date"/>
        </optional>
        <optional>
          <attribute name="min-advance"/>
        </optional>
        <optional>
          <attribute name="max-advance"/>
        </optional>
        <optional>
          <attribute name="create-conlicts"/>
        </optional>
      </group>
    </element>
  </define>

  <define name="period">
    <element name="rapla:period">
      <choice>
	<attribute name="idref"><data type="IDREF"/></attribute>
	<group>
          <ref name="id"/>
          <attribute name="name"/>
	  <attribute name="start"/>
	  <attribute name="end"/>
	</group>
      </choice>
    </element>
  </define>
  <define name="exception">
    <element name="rapla:exception">
      <zeroOrMore>
	<choice>
	  <ref name="period"/>
	  <ref name="date"/>
	</choice>
      </zeroOrMore>
    </element>
  </define>

  <define name="reservation">
    <element name="rapla:reservation">
      <choice>
         <attribute name="idref"><data type="IDREF"/></attribute>
         <group>
           <ref name="id"/>
           <attribute name="owner"/>
           <optional>
             <attribute name="created-at"/>
             <attribute name="last-changed"/>
           </optional>
           <ref name="dynamic.type"/>
	   <zeroOrMore>
	     <ref name="appointment"/>
	   </zeroOrMore>
	   <zeroOrMore>
	     <ref name="allocate"/>
	   </zeroOrMore>
         </group>
      </choice>
    </element>
  </define>

  <define name="reservationfilter">
    <element name="rapla:reservationfilter">
      <choice>
         <attribute name="idref"><data type="IDREF"/></attribute>
         <group>
           <ref name="id"/>
           <attribute name="owner"/>
	   <optional>
             <attribute name="name"/>
	   </optional>
	   <optional>
	     <choice>
	       <ref name="period"/>	
	       <element name="rapla:defaultPeriod">
		 <empty/>
	       </element>
	       <element name="rapla:customizedPeriod">
		 <attribute name="start"/>
		 <attribute name="end"/>
		 <empty/>
	       </element>
	     </choice>
	   </optional>
	   <optional>
	     <ref name="user"/>	
	   </optional>
	   <zeroOrMore>
	     <ref name="classificationfilter"/>
	   </zeroOrMore>
         </group>
       </choice>
    </element>
  </define>

  <define name="allocatablefilter">
    <element name="rapla:allocatablefilter">
      <choice>
         <attribute name="idref"><data type="IDREF"/></attribute>
         <group>
           <ref name="id"/>
           <attribute name="owner"/>
           <optional>
             <attribute name="name"/>
	   </optional>
           <zeroOrMore>
	     <ref name="classificationfilter"/>
           </zeroOrMore>
         </group>
      </choice>
    </element>
  </define>

  <define name="classificationfilter">
    <element name="rapla:classificationfilter">
      <zeroOrMore>
	<element name="rapla:rule">
          <zeroOrMore>
      	    <element name="rapla:orCond">
               <attribute name="operator"/>
               <text/>
            </element>
          </zeroOrMore>
          <attribute name="attribute"/>
        </element>
      </zeroOrMore>
      <attribute name="dynamictype"/>
    </element>
  </define>

  <define name="appointment">
    <element name="rapla:appointment">
      <choice>
	<attribute name="idref"/>
	<group>
      	  <optional>
   	    <attribute name="id"/>
	  </optional>
	  <choice>
            <group>
  	      <attribute name="start-date"/>
	      <attribute name="start-time"/>
	      <optional>
    	         <attribute name="end-date"/>
	      </optional>
  	      <attribute name="end-time"/>
            </group>
            <group>
  	      <attribute name="start-date"/>
	      <optional>
	          <attribute name="end-date"/>
	      </optional>
            </group>
	  </choice>
	</group>
      </choice>
      <optional>
        <ref name="repeating"/>
      </optional>
    </element>
  </define>

  <define name="repeating">
    <element name="rapla:repeating">
      <attribute name="type"/>
      <optional>
        <attribute name="interval"/>
      </optional>
      <optional>
        <choice>
          <attribute name="end-date"/>
          <attribute name="number"/>
        </choice>
      </optional>
      <zeroOrMore>
	<ref name="exception"/>
      </zeroOrMore>
    </element>
  </define>

  <define name="allocate">
    <element name="rapla:allocate">
      <attribute name="idref"/>
      <zeroOrMore>
        <ref name="appointment"/>
      </zeroOrMore>
    </element>
  </define>

  <define name="date">
    <element name="rapla:date">
      <ref name="date.att"/>
    </element>
  </define>

</grammar>