org.argeo.app.core/src/org/argeo/app/core/schemas/xCal-2.0.xsd

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" targetNamespace="urn:ietf:params:xml:ns:icalendar-2.0" xmlns:ns1="urn:ietf:params:xml:ns:icalendar-2.0">
   3   <!-- 3.2 Property Parameters -->
   4   <!-- 3.2.1 Alternate Text Representation -->
   5   <xs:element name="altrep">
   6     <xs:complexType>
   7       <xs:sequence>
   8         <xs:element ref="ns1:uri"/>
   9       </xs:sequence>
  10     </xs:complexType>
  11   </xs:element>
  12   <!-- 3.2.2 Common Name -->
  13   <xs:element name="cn">
  14     <xs:complexType>
  15       <xs:group ref="ns1:value-text"/>
  16     </xs:complexType>
  17   </xs:element>
  18   <!-- 3.2.3 Calendar User Type -->
  19   <xs:element name="cutype">
  20     <xs:complexType>
  21       <xs:sequence>
  22         <xs:element name="text">
  23           <xs:simpleType>
  24             <xs:restriction base="xs:token">
  25               <xs:enumeration value="INDIVIDUAL"/>
  26               <xs:enumeration value="GROUP"/>
  27               <xs:enumeration value="RESOURCE"/>
  28               <xs:enumeration value="ROOM"/>
  29               <xs:enumeration value="UNKNOWN"/>
  30             </xs:restriction>
  31           </xs:simpleType>
  32         </xs:element>
  33       </xs:sequence>
  34     </xs:complexType>
  35   </xs:element>
  36   <!-- 3.2.4 Delegators -->
  37   <xs:element name="delegated-from">
  38     <xs:complexType>
  39       <xs:sequence>
  40         <xs:element maxOccurs="unbounded" ref="ns1:cal-address"/>
  41       </xs:sequence>
  42     </xs:complexType>
  43   </xs:element>
  44   <!-- 3.2.5 Delegatees -->
  45   <xs:element name="delegated-to">
  46     <xs:complexType>
  47       <xs:sequence>
  48         <xs:element maxOccurs="unbounded" ref="ns1:cal-address"/>
  49       </xs:sequence>
  50     </xs:complexType>
  51   </xs:element>
  52   <!-- 3.2.6 Directory Entry Reference -->
  53   <xs:element name="dir">
  54     <xs:complexType>
  55       <xs:sequence>
  56         <xs:element ref="ns1:uri"/>
  57       </xs:sequence>
  58     </xs:complexType>
  59   </xs:element>
  60   <!-- 3.2.7 Inline Encoding -->
  61   <xs:element name="encoding">
  62     <xs:complexType>
  63       <xs:sequence>
  64         <xs:element name="text">
  65           <xs:simpleType>
  66             <xs:restriction base="xs:token">
  67               <xs:enumeration value="8BIT"/>
  68               <xs:enumeration value="BASE64"/>
  69             </xs:restriction>
  70           </xs:simpleType>
  71         </xs:element>
  72       </xs:sequence>
  73     </xs:complexType>
  74   </xs:element>
  75   <!-- 3.2.8 Format Type -->
  76   <xs:element name="fmttype">
  77     <xs:complexType>
  78       <xs:group ref="ns1:value-text"/>
  79     </xs:complexType>
  80   </xs:element>
  81   <!-- 3.2.9 Free/Busy Time Type -->
  82   <xs:element name="fbtype">
  83     <xs:complexType>
  84       <xs:sequence>
  85         <xs:element name="text">
  86           <xs:simpleType>
  87             <xs:restriction base="xs:token">
  88               <xs:enumeration value="FREE"/>
  89               <xs:enumeration value="BUSY"/>
  90               <xs:enumeration value="BUSY-UNAVAILABLE"/>
  91               <xs:enumeration value="BUSY-TENTATIVE"/>
  92             </xs:restriction>
  93           </xs:simpleType>
  94         </xs:element>
  95       </xs:sequence>
  96     </xs:complexType>
  97   </xs:element>
  98   <!-- 3.2.10 Language -->
  99   <xs:element name="language">
 100     <xs:complexType>
 101       <xs:group ref="ns1:value-text"/>
 102     </xs:complexType>
 103   </xs:element>
 104   <!-- 3.2.11 Group or List Membership -->
 105   <xs:element name="member">
 106     <xs:complexType>
 107       <xs:sequence>
 108         <xs:element maxOccurs="unbounded" ref="ns1:cal-address"/>
 109       </xs:sequence>
 110     </xs:complexType>
 111   </xs:element>
 112   <!-- 3.2.12 Participation Status -->
 113   <xs:element name="partstat">
 114     <xs:complexType>
 115       <xs:choice>
 116         <xs:group ref="ns1:type-partstat-event"/>
 117         <xs:group ref="ns1:type-partstat-todo"/>
 118         <xs:group ref="ns1:type-partstat-jour"/>
 119       </xs:choice>
 120     </xs:complexType>
 121   </xs:element>
 122   <xs:group name="type-partstat-event">
 123     <xs:sequence>
 124       <xs:element name="text">
 125         <xs:simpleType>
 126           <xs:restriction base="xs:token">
 127             <xs:enumeration value="NEEDS-ACTION"/>
 128             <xs:enumeration value="ACCEPTED"/>
 129             <xs:enumeration value="DECLINED"/>
 130             <xs:enumeration value="TENTATIVE"/>
 131             <xs:enumeration value="DELEGATED"/>
 132           </xs:restriction>
 133         </xs:simpleType>
 134       </xs:element>
 135     </xs:sequence>
 136   </xs:group>
 137   <xs:group name="type-partstat-todo">
 138     <xs:sequence>
 139       <xs:element name="text">
 140         <xs:simpleType>
 141           <xs:restriction base="xs:token">
 142             <xs:enumeration value="NEEDS-ACTION"/>
 143             <xs:enumeration value="ACCEPTED"/>
 144             <xs:enumeration value="DECLINED"/>
 145             <xs:enumeration value="TENTATIVE"/>
 146             <xs:enumeration value="DELEGATED"/>
 147             <xs:enumeration value="COMPLETED"/>
 148             <xs:enumeration value="IN-PROCESS"/>
 149           </xs:restriction>
 150         </xs:simpleType>
 151       </xs:element>
 152     </xs:sequence>
 153   </xs:group>
 154   <xs:group name="type-partstat-jour">
 155     <xs:sequence>
 156       <xs:element name="text">
 157         <xs:simpleType>
 158           <xs:restriction base="xs:token">
 159             <xs:enumeration value="NEEDS-ACTION"/>
 160             <xs:enumeration value="ACCEPTED"/>
 161             <xs:enumeration value="DECLINED"/>
 162           </xs:restriction>
 163         </xs:simpleType>
 164       </xs:element>
 165     </xs:sequence>
 166   </xs:group>
 167   <!-- 3.2.13 Recurrence Identifier Range -->
 168   <xs:element name="range">
 169     <xs:complexType>
 170       <xs:sequence>
 171         <xs:element name="text">
 172           <xs:simpleType>
 173             <xs:restriction base="xs:token">
 174               <xs:enumeration value="THISANDFUTURE"/>
 175             </xs:restriction>
 176           </xs:simpleType>
 177         </xs:element>
 178       </xs:sequence>
 179     </xs:complexType>
 180   </xs:element>
 181   <!-- 3.2.14 Alarm Trigger Relationship -->
 182   <xs:element name="related">
 183     <xs:complexType>
 184       <xs:sequence>
 185         <xs:element name="text">
 186           <xs:simpleType>
 187             <xs:restriction base="xs:token">
 188               <xs:enumeration value="START"/>
 189               <xs:enumeration value="END"/>
 190             </xs:restriction>
 191           </xs:simpleType>
 192         </xs:element>
 193       </xs:sequence>
 194     </xs:complexType>
 195   </xs:element>
 196   <!-- 3.2.15 Relationship Type -->
 197   <xs:element name="reltype">
 198     <xs:complexType>
 199       <xs:sequence>
 200         <xs:element name="text">
 201           <xs:simpleType>
 202             <xs:restriction base="xs:token">
 203               <xs:enumeration value="PARENT"/>
 204               <xs:enumeration value="CHILD"/>
 205               <xs:enumeration value="SIBLING"/>
 206             </xs:restriction>
 207           </xs:simpleType>
 208         </xs:element>
 209       </xs:sequence>
 210     </xs:complexType>
 211   </xs:element>
 212   <!-- 3.2.16 Participation Role -->
 213   <xs:element name="role">
 214     <xs:complexType>
 215       <xs:sequence>
 216         <xs:element name="text">
 217           <xs:simpleType>
 218             <xs:restriction base="xs:token">
 219               <xs:enumeration value="CHAIR"/>
 220               <xs:enumeration value="REQ-PARTICIPANT"/>
 221               <xs:enumeration value="OPT-PARTICIPANT"/>
 222               <xs:enumeration value="NON-PARTICIPANT"/>
 223             </xs:restriction>
 224           </xs:simpleType>
 225         </xs:element>
 226       </xs:sequence>
 227     </xs:complexType>
 228   </xs:element>
 229   <!-- 3.2.17 RSVP Expectation -->
 230   <xs:element name="rsvp" type="ns1:value-boolean"/>
 231   <!-- 3.2.18 Sent By -->
 232   <xs:element name="sent-by">
 233     <xs:complexType>
 234       <xs:sequence>
 235         <xs:element ref="ns1:cal-address"/>
 236       </xs:sequence>
 237     </xs:complexType>
 238   </xs:element>
 239   <!-- 3.2.19 Time Zone Identifier -->
 240   <xs:group name="tzidparam">
 241     <xs:sequence>
 242       <xs:element name="tzid">
 243         <xs:complexType>
 244           <xs:group ref="ns1:value-text"/>
 245         </xs:complexType>
 246       </xs:element>
 247     </xs:sequence>
 248   </xs:group>
 249   <!-- 3.3 Property Value Data Types -->
 250   <!-- 3.3.1 BINARY -->
 251   <xs:element name="binary" type="xs:string"/>
 252   <!-- 3.3.2 BOOLEAN -->
 253   <xs:complexType name="value-boolean">
 254     <xs:sequence>
 255       <xs:element ref="ns1:boolean"/>
 256     </xs:sequence>
 257   </xs:complexType>
 258   <xs:element name="boolean" type="xs:boolean"/>
 259   <!-- 3.3.3 CAL-ADDRESS -->
 260   <xs:element name="cal-address" type="xs:anyURI"/>
 261   <!-- 3.3.4 DATE -->
 262   <xs:simpleType name="pattern-date">
 263     <xs:restriction base="xs:string">
 264       <xs:pattern value="\d\d\d\d-\d\d-\d\d"/>
 265     </xs:restriction>
 266   </xs:simpleType>
 267   <xs:element name="date" type="ns1:pattern-date"/>
 268   <!-- 3.3.5 DATE-TIME -->
 269   <xs:simpleType name="pattern-date-time">
 270     <xs:restriction base="xs:string">
 271       <xs:pattern value="\d\d\d\d-\d\d-\d\dT\d\d:\d\d:\d\dZ?"/>
 272     </xs:restriction>
 273   </xs:simpleType>
 274   <xs:element name="date-time" type="ns1:pattern-date-time"/>
 275   <!-- 3.3.6 DURATION -->
 276   <xs:simpleType name="pattern-duration">
 277     <xs:restriction base="xs:string">
 278       <xs:pattern value="(\+|-)?P(\d+W)|(\d+D)?(T(\d+H(\d+M)?(\d+S)?)|(\d+M(\d+S)?)|(\d+S))?"/>
 279     </xs:restriction>
 280   </xs:simpleType>
 281   <xs:group name="value-duration">
 282     <xs:sequence>
 283       <xs:element name="duration" type="ns1:pattern-duration"/>
 284     </xs:sequence>
 285   </xs:group>
 286   <!-- 3.3.7 FLOAT -->
 287   <xs:element name="float" type="xs:float"/>
 288   <!-- 3.3.8 INTEGER -->
 289   <xs:element name="integer" type="xs:integer"/>
 290   <!-- 3.3.9 PERIOD -->
 291   <xs:element name="period">
 292     <xs:complexType>
 293       <xs:sequence>
 294         <xs:element ref="ns1:start"/>
 295         <xs:choice>
 296           <xs:element ref="ns1:end"/>
 297           <xs:element name="duration" type="ns1:pattern-duration"/>
 298         </xs:choice>
 299       </xs:sequence>
 300     </xs:complexType>
 301   </xs:element>
 302   <xs:element name="start" type="ns1:pattern-date-time"/>
 303   <xs:element name="end" type="ns1:pattern-date-time"/>
 304   <!-- 3.3.10 RECUR -->
 305   <xs:element name="recur">
 306     <xs:complexType>
 307       <xs:sequence>
 308         <xs:element ref="ns1:freq"/>
 309         <xs:choice minOccurs="0">
 310           <xs:element ref="ns1:until"/>
 311           <xs:element ref="ns1:count"/>
 312         </xs:choice>
 313         <xs:element minOccurs="0" ref="ns1:interval"/>
 314         <xs:element minOccurs="0" maxOccurs="unbounded" ref="ns1:bysecond"/>
 315         <xs:element minOccurs="0" maxOccurs="unbounded" ref="ns1:byminute"/>
 316         <xs:element minOccurs="0" maxOccurs="unbounded" ref="ns1:byhour"/>
 317         <xs:element minOccurs="0" maxOccurs="unbounded" ref="ns1:byday"/>
 318         <xs:element minOccurs="0" maxOccurs="unbounded" ref="ns1:bymonthday"/>
 319         <xs:element minOccurs="0" maxOccurs="unbounded" ref="ns1:byyearday"/>
 320         <xs:element minOccurs="0" maxOccurs="unbounded" ref="ns1:byweekno"/>
 321         <xs:element minOccurs="0" maxOccurs="unbounded" ref="ns1:bymonth"/>
 322         <xs:element minOccurs="0" maxOccurs="unbounded" ref="ns1:bysetpos"/>
 323         <xs:element minOccurs="0" ref="ns1:wkst"/>
 324       </xs:sequence>
 325     </xs:complexType>
 326   </xs:element>
 327   <xs:element name="interval" type="xs:positiveInteger"/>
 328   <xs:element name="wkst" type="ns1:type-weekday"/>
 329   <xs:element name="freq">
 330     <xs:simpleType>
 331       <xs:restriction base="xs:token">
 332         <xs:enumeration value="SECONDLY"/>
 333         <xs:enumeration value="MINUTELY"/>
 334         <xs:enumeration value="HOURLY"/>
 335         <xs:enumeration value="DAILY"/>
 336         <xs:enumeration value="WEEKLY"/>
 337         <xs:enumeration value="MONTHLY"/>
 338         <xs:enumeration value="YEARLY"/>
 339       </xs:restriction>
 340     </xs:simpleType>
 341   </xs:element>
 342   <xs:element name="until">
 343     <xs:complexType>
 344       <xs:choice>
 345         <xs:element ref="ns1:date"/>
 346         <xs:element ref="ns1:date-time"/>
 347       </xs:choice>
 348     </xs:complexType>
 349   </xs:element>
 350   <xs:element name="count" type="xs:positiveInteger"/>
 351   <xs:element name="bysecond" type="xs:positiveInteger"/>
 352   <xs:element name="byminute" type="xs:positiveInteger"/>
 353   <xs:element name="byhour" type="xs:positiveInteger"/>
 354   <xs:simpleType name="type-weekday">
 355     <xs:restriction base="xs:token">
 356       <xs:enumeration value="SU"/>
 357       <xs:enumeration value="MO"/>
 358       <xs:enumeration value="TU"/>
 359       <xs:enumeration value="WE"/>
 360       <xs:enumeration value="TH"/>
 361       <xs:enumeration value="FR"/>
 362       <xs:enumeration value="SA"/>
 363     </xs:restriction>
 364   </xs:simpleType>
 365   <xs:element name="byday">
 366     <xs:simpleType>
 367       <xs:union>
 368         <xs:simpleType>
 369           <xs:union memberTypes="xs:integer ns1:type-weekday"/>
 370         </xs:simpleType>
 371         <xs:simpleType>
 372           <xs:restriction base="xs:token">
 373             <xs:length value="0"/>
 374           </xs:restriction>
 375         </xs:simpleType>
 376       </xs:union>
 377     </xs:simpleType>
 378   </xs:element>
 379   <xs:element name="bymonthday" type="xs:integer"/>
 380   <xs:element name="byyearday" type="xs:integer"/>
 381   <xs:element name="byweekno" type="xs:integer"/>
 382   <xs:element name="bymonth" type="xs:positiveInteger"/>
 383   <xs:element name="bysetpos" type="xs:integer"/>
 384   <!-- 3.3.11 TEXT -->
 385   <xs:group name="value-text">
 386     <xs:sequence>
 387       <xs:element name="text" type="xs:string"/>
 388     </xs:sequence>
 389   </xs:group>
 390   <!-- 3.3.12 TIME -->
 391   <xs:simpleType name="pattern-time">
 392     <xs:restriction base="xs:string">
 393       <xs:pattern value="\d\d:\d\d:\d\dZ?"/>
 394     </xs:restriction>
 395   </xs:simpleType>
 396   <xs:element name="time" type="ns1:pattern-time"/>
 397   <!-- 3.3.13 URI -->
 398   <xs:element name="uri" type="xs:anyURI"/>
 399   <!-- 3.3.14 UTC-OFFSET -->
 400   <xs:element name="utc-offset">
 401     <xs:simpleType>
 402       <xs:restriction base="xs:string">
 403         <xs:pattern value="(\+|-)\d\d:\d\d(:\d\d)?"/>
 404       </xs:restriction>
 405     </xs:simpleType>
 406   </xs:element>
 407   <!-- UNKNOWN -->
 408   <xs:element name="unknown" type="xs:string"/>
 409   <!-- 3.4 iCalendar Stream -->
 410   <xs:element name="icalendar">
 411     <xs:complexType>
 412       <xs:sequence>
 413         <xs:element maxOccurs="unbounded" ref="ns1:vcalendar"/>
 414       </xs:sequence>
 415     </xs:complexType>
 416   </xs:element>
 417   <!-- 3.6 Calendar Components -->
 418   <xs:element name="vcalendar">
 419     <xs:complexType>
 420       <xs:sequence>
 421         <xs:group ref="ns1:type-calprops"/>
 422         <xs:element ref="ns1:components"/>
 423       </xs:sequence>
 424     </xs:complexType>
 425   </xs:element>
 426   <xs:group name="type-calprops">
 427     <xs:sequence>
 428       <xs:element name="properties">
 429         <xs:complexType>
 430           <xs:choice minOccurs="0" maxOccurs="unbounded">
 431             <xs:element ref="ns1:prodid"/>
 432             <xs:element ref="ns1:version"/>
 433             <xs:element ref="ns1:calscale"/>
 434             <xs:element ref="ns1:method"/>
 435           </xs:choice>
 436         </xs:complexType>
 437       </xs:element>
 438     </xs:sequence>
 439   </xs:group>
 440   <xs:element name="components">
 441     <xs:complexType>
 442       <xs:choice minOccurs="0" maxOccurs="unbounded">
 443         <xs:element ref="ns1:vevent"/>
 444         <xs:element ref="ns1:vtodo"/>
 445         <xs:element ref="ns1:vjournal"/>
 446         <xs:element ref="ns1:vfreebusy"/>
 447         <xs:element ref="ns1:vtimezone"/>
 448       </xs:choice>
 449     </xs:complexType>
 450   </xs:element>
 451   <!-- 3.6.1 Event Component -->
 452   <xs:element name="vevent">
 453     <xs:complexType>
 454       <xs:sequence>
 455         <xs:group ref="ns1:type-eventprop"/>
 456         <xs:element minOccurs="0" name="components">
 457           <xs:complexType>
 458             <xs:sequence>
 459               <xs:element maxOccurs="unbounded" ref="ns1:valarm"/>
 460             </xs:sequence>
 461           </xs:complexType>
 462         </xs:element>
 463       </xs:sequence>
 464     </xs:complexType>
 465   </xs:element>
 466   <xs:group name="type-eventprop">
 467     <xs:sequence>
 468       <xs:element name="properties">
 469         <xs:complexType>
 470           <xs:choice minOccurs="0" maxOccurs="unbounded">
 471             <xs:element ref="ns1:dtstamp"/>
 472             <xs:element ref="ns1:dtstart"/>
 473             <xs:element ref="ns1:uid"/>
 474             <xs:element ref="ns1:class"/>
 475             <xs:element ref="ns1:created"/>
 476             <xs:element ref="ns1:description"/>
 477             <xs:element ref="ns1:geo"/>
 478             <xs:element ref="ns1:last-modified"/>
 479             <xs:element ref="ns1:location"/>
 480             <xs:element ref="ns1:organizer"/>
 481             <xs:element ref="ns1:priority"/>
 482             <xs:element ref="ns1:sequence"/>
 483             <xs:group ref="ns1:property-status-event"/>
 484             <xs:element ref="ns1:summary"/>
 485             <xs:element ref="ns1:transp"/>
 486             <xs:element ref="ns1:url"/>
 487             <xs:element ref="ns1:recurrence-id"/>
 488             <xs:element ref="ns1:rrule"/>
 489             <xs:choice>
 490               <xs:element ref="ns1:dtend"/>
 491               <xs:group ref="ns1:property-duration"/>
 492             </xs:choice>
 493             <xs:element ref="ns1:attach"/>
 494             <xs:element ref="ns1:attendee"/>
 495             <xs:element ref="ns1:categories"/>
 496             <xs:element ref="ns1:comment"/>
 497             <xs:element ref="ns1:contact"/>
 498             <xs:element ref="ns1:exdate"/>
 499             <xs:element ref="ns1:request-status"/>
 500             <xs:element ref="ns1:related-to"/>
 501             <xs:element ref="ns1:resources"/>
 502             <xs:element ref="ns1:rdate"/>
 503           </xs:choice>
 504         </xs:complexType>
 505       </xs:element>
 506     </xs:sequence>
 507   </xs:group>
 508   <!-- 3.6.2 To-do Component -->
 509   <xs:element name="vtodo">
 510     <xs:complexType>
 511       <xs:sequence>
 512         <xs:group ref="ns1:type-todoprop"/>
 513         <xs:element minOccurs="0" name="components">
 514           <xs:complexType>
 515             <xs:sequence>
 516               <xs:element maxOccurs="unbounded" ref="ns1:valarm"/>
 517             </xs:sequence>
 518           </xs:complexType>
 519         </xs:element>
 520       </xs:sequence>
 521     </xs:complexType>
 522   </xs:element>
 523   <xs:group name="type-todoprop">
 524     <xs:sequence>
 525       <xs:element name="properties">
 526         <xs:complexType>
 527           <xs:choice minOccurs="0" maxOccurs="unbounded">
 528             <xs:element ref="ns1:dtstamp"/>
 529             <xs:element ref="ns1:uid"/>
 530             <xs:element ref="ns1:class"/>
 531             <xs:element ref="ns1:completed"/>
 532             <xs:element ref="ns1:created"/>
 533             <xs:element ref="ns1:description"/>
 534             <xs:element ref="ns1:geo"/>
 535             <xs:element ref="ns1:last-modified"/>
 536             <xs:element ref="ns1:location"/>
 537             <xs:element ref="ns1:organizer"/>
 538             <xs:element ref="ns1:percent-complete"/>
 539             <xs:element ref="ns1:priority"/>
 540             <xs:element ref="ns1:recurrence-id"/>
 541             <xs:element ref="ns1:sequence"/>
 542             <xs:group ref="ns1:property-status-todo"/>
 543             <xs:element ref="ns1:summary"/>
 544             <xs:element ref="ns1:url"/>
 545             <xs:element ref="ns1:rrule"/>
 546             <xs:choice>
 547               <xs:choice>
 548                 <xs:element ref="ns1:dtstart"/>
 549                 <xs:element ref="ns1:dtend"/>
 550               </xs:choice>
 551               <xs:choice>
 552                 <xs:element ref="ns1:dtstart"/>
 553                 <xs:group ref="ns1:property-duration"/>
 554               </xs:choice>
 555             </xs:choice>
 556             <xs:element ref="ns1:attach"/>
 557             <xs:element ref="ns1:attendee"/>
 558             <xs:element ref="ns1:categories"/>
 559             <xs:element ref="ns1:comment"/>
 560             <xs:element ref="ns1:contact"/>
 561             <xs:element ref="ns1:exdate"/>
 562             <xs:element ref="ns1:request-status"/>
 563             <xs:element ref="ns1:related-to"/>
 564             <xs:element ref="ns1:resources"/>
 565             <xs:element ref="ns1:rdate"/>
 566           </xs:choice>
 567         </xs:complexType>
 568       </xs:element>
 569     </xs:sequence>
 570   </xs:group>
 571   <!-- 3.6.3 Journal Component -->
 572   <xs:element name="vjournal" type="ns1:type-jourprop"/>
 573   <xs:complexType name="type-jourprop">
 574     <xs:sequence>
 575       <xs:element name="properties">
 576         <xs:complexType>
 577           <xs:choice minOccurs="0" maxOccurs="unbounded">
 578             <xs:element ref="ns1:dtstamp"/>
 579             <xs:element ref="ns1:uid"/>
 580             <xs:element ref="ns1:class"/>
 581             <xs:element ref="ns1:created"/>
 582             <xs:element ref="ns1:dtstart"/>
 583             <xs:element ref="ns1:last-modified"/>
 584             <xs:element ref="ns1:organizer"/>
 585             <xs:element ref="ns1:recurrence-id"/>
 586             <xs:element ref="ns1:sequence"/>
 587             <xs:group ref="ns1:property-status-jour"/>
 588             <xs:element ref="ns1:summary"/>
 589             <xs:element ref="ns1:url"/>
 590             <xs:element ref="ns1:rrule"/>
 591             <xs:element ref="ns1:attach"/>
 592             <xs:element ref="ns1:attendee"/>
 593             <xs:element ref="ns1:categories"/>
 594             <xs:element ref="ns1:comment"/>
 595             <xs:element ref="ns1:contact"/>
 596             <xs:element ref="ns1:description"/>
 597             <xs:element ref="ns1:exdate"/>
 598             <xs:element ref="ns1:related-to"/>
 599             <xs:element ref="ns1:rdate"/>
 600             <xs:element ref="ns1:request-status"/>
 601           </xs:choice>
 602         </xs:complexType>
 603       </xs:element>
 604     </xs:sequence>
 605   </xs:complexType>
 606   <!-- 3.6.4 Free/Busy Component -->
 607   <xs:element name="vfreebusy" type="ns1:type-fbprop"/>
 608   <xs:complexType name="type-fbprop">
 609     <xs:sequence>
 610       <xs:element name="properties">
 611         <xs:complexType>
 612           <xs:choice minOccurs="0" maxOccurs="unbounded">
 613             <xs:element ref="ns1:dtstamp"/>
 614             <xs:element ref="ns1:uid"/>
 615             <xs:element ref="ns1:contact"/>
 616             <xs:element ref="ns1:dtstart"/>
 617             <xs:element ref="ns1:dtend"/>
 618             <xs:group ref="ns1:property-duration"/>
 619             <xs:element ref="ns1:organizer"/>
 620             <xs:element ref="ns1:url"/>
 621             <xs:element ref="ns1:attendee"/>
 622             <xs:element ref="ns1:comment"/>
 623             <xs:element ref="ns1:freebusy"/>
 624             <xs:element ref="ns1:request-status"/>
 625           </xs:choice>
 626         </xs:complexType>
 627       </xs:element>
 628     </xs:sequence>
 629   </xs:complexType>
 630   <!-- 3.6.5 Time Zone Component -->
 631   <xs:element name="vtimezone">
 632     <xs:complexType>
 633       <xs:sequence>
 634         <xs:element name="properties">
 635           <xs:complexType>
 636             <xs:choice minOccurs="0" maxOccurs="unbounded">
 637               <xs:group ref="ns1:property-tzid"/>
 638               <xs:element ref="ns1:last-modified"/>
 639               <xs:element ref="ns1:tzurl"/>
 640             </xs:choice>
 641           </xs:complexType>
 642         </xs:element>
 643         <xs:element name="components">
 644           <xs:complexType>
 645             <xs:choice minOccurs="0" maxOccurs="unbounded">
 646               <xs:choice>
 647                 <xs:element ref="ns1:standard"/>
 648                 <xs:element ref="ns1:daylight"/>
 649               </xs:choice>
 650               <xs:element ref="ns1:standard"/>
 651               <xs:element ref="ns1:daylight"/>
 652             </xs:choice>
 653           </xs:complexType>
 654         </xs:element>
 655       </xs:sequence>
 656     </xs:complexType>
 657   </xs:element>
 658   <xs:element name="standard" type="ns1:type-tzprop"/>
 659   <xs:element name="daylight" type="ns1:type-tzprop"/>
 660   <xs:complexType name="type-tzprop">
 661     <xs:sequence>
 662       <xs:element name="properties">
 663         <xs:complexType>
 664           <xs:choice minOccurs="0" maxOccurs="unbounded">
 665             <xs:element ref="ns1:dtstart"/>
 666             <xs:element ref="ns1:tzoffsetto"/>
 667             <xs:element ref="ns1:tzoffsetfrom"/>
 668             <xs:element ref="ns1:rrule"/>
 669             <xs:element ref="ns1:comment"/>
 670             <xs:element ref="ns1:rdate"/>
 671             <xs:element ref="ns1:tzname"/>
 672           </xs:choice>
 673         </xs:complexType>
 674       </xs:element>
 675     </xs:sequence>
 676   </xs:complexType>
 677   <!-- 3.6.6 Alarm Component -->
 678   <xs:element name="valarm">
 679     <xs:complexType>
 680       <xs:choice>
 681         <xs:group ref="ns1:type-audioprop"/>
 682         <xs:group ref="ns1:type-dispprop"/>
 683         <xs:group ref="ns1:type-emailprop"/>
 684       </xs:choice>
 685     </xs:complexType>
 686   </xs:element>
 687   <xs:group name="type-audioprop">
 688     <xs:sequence>
 689       <xs:element name="properties">
 690         <xs:complexType>
 691           <xs:choice minOccurs="0" maxOccurs="unbounded">
 692             <xs:element ref="ns1:action"/>
 693             <xs:element ref="ns1:trigger"/>
 694             <xs:choice>
 695               <xs:group ref="ns1:property-duration"/>
 696               <xs:element ref="ns1:repeat"/>
 697             </xs:choice>
 698             <xs:element ref="ns1:attach"/>
 699           </xs:choice>
 700         </xs:complexType>
 701       </xs:element>
 702     </xs:sequence>
 703   </xs:group>
 704   <xs:group name="type-dispprop">
 705     <xs:sequence>
 706       <xs:element name="properties">
 707         <xs:complexType>
 708           <xs:choice minOccurs="0" maxOccurs="unbounded">
 709             <xs:element ref="ns1:action"/>
 710             <xs:element ref="ns1:description"/>
 711             <xs:element ref="ns1:trigger"/>
 712             <xs:element ref="ns1:summary"/>
 713             <xs:element ref="ns1:attendee"/>
 714             <xs:choice>
 715               <xs:group ref="ns1:property-duration"/>
 716               <xs:element ref="ns1:repeat"/>
 717             </xs:choice>
 718             <xs:element ref="ns1:attach"/>
 719           </xs:choice>
 720         </xs:complexType>
 721       </xs:element>
 722     </xs:sequence>
 723   </xs:group>
 724   <xs:group name="type-emailprop">
 725     <xs:sequence>
 726       <xs:element name="properties">
 727         <xs:complexType>
 728           <xs:choice minOccurs="0" maxOccurs="unbounded">
 729             <xs:element ref="ns1:action"/>
 730             <xs:element ref="ns1:description"/>
 731             <xs:element ref="ns1:trigger"/>
 732             <xs:choice>
 733               <xs:group ref="ns1:property-duration"/>
 734               <xs:element ref="ns1:repeat"/>
 735             </xs:choice>
 736           </xs:choice>
 737         </xs:complexType>
 738       </xs:element>
 739     </xs:sequence>
 740   </xs:group>
 741   <!-- 3.7 Calendar Properties -->
 742   <!-- 3.7.1 Calendar Scale -->
 743   <xs:element name="calscale">
 744     <xs:complexType>
 745       <xs:sequence>
 746         <xs:element minOccurs="0" name="parameters">
 747           <xs:complexType/>
 748         </xs:element>
 749         <xs:element name="text">
 750           <xs:simpleType>
 751             <xs:restriction base="xs:token">
 752               <xs:enumeration value="GREGORIAN"/>
 753             </xs:restriction>
 754           </xs:simpleType>
 755         </xs:element>
 756       </xs:sequence>
 757     </xs:complexType>
 758   </xs:element>
 759   <!-- 3.7.2 Method -->
 760   <xs:element name="method">
 761     <xs:complexType>
 762       <xs:sequence>
 763         <xs:element minOccurs="0" name="parameters">
 764           <xs:complexType/>
 765         </xs:element>
 766         <xs:group ref="ns1:value-text"/>
 767       </xs:sequence>
 768     </xs:complexType>
 769   </xs:element>
 770   <!-- 3.7.3 Product Identifier -->
 771   <xs:element name="prodid">
 772     <xs:complexType>
 773       <xs:sequence>
 774         <xs:element minOccurs="0" name="parameters">
 775           <xs:complexType/>
 776         </xs:element>
 777         <xs:group ref="ns1:value-text"/>
 778       </xs:sequence>
 779     </xs:complexType>
 780   </xs:element>
 781   <!-- 3.7.4 Version -->
 782   <xs:element name="version">
 783     <xs:complexType>
 784       <xs:sequence>
 785         <xs:element minOccurs="0" name="parameters">
 786           <xs:complexType/>
 787         </xs:element>
 788         <xs:element name="text">
 789           <xs:simpleType>
 790             <xs:restriction base="xs:token">
 791               <xs:enumeration value="2.0"/>
 792             </xs:restriction>
 793           </xs:simpleType>
 794         </xs:element>
 795       </xs:sequence>
 796     </xs:complexType>
 797   </xs:element>
 798   <!-- 3.8 Component Properties -->
 799   <!-- 3.8.1 Descriptive Component Properties -->
 800   <!-- 3.8.1.1 Attachment -->
 801   <xs:element name="attach">
 802     <xs:complexType>
 803       <xs:sequence>
 804         <xs:element minOccurs="0" name="parameters">
 805           <xs:complexType>
 806             <xs:choice minOccurs="0" maxOccurs="unbounded">
 807               <xs:element ref="ns1:fmttype"/>
 808               <xs:element ref="ns1:encoding"/>
 809             </xs:choice>
 810           </xs:complexType>
 811         </xs:element>
 812         <xs:choice>
 813           <xs:element ref="ns1:uri"/>
 814           <xs:element ref="ns1:binary"/>
 815         </xs:choice>
 816       </xs:sequence>
 817     </xs:complexType>
 818   </xs:element>
 819   <!-- 3.8.1.2 Categories -->
 820   <xs:element name="categories">
 821     <xs:complexType>
 822       <xs:sequence>
 823         <xs:element minOccurs="0" name="parameters">
 824           <xs:complexType>
 825             <xs:sequence>
 826               <xs:element minOccurs="0" ref="ns1:language"/>
 827             </xs:sequence>
 828           </xs:complexType>
 829         </xs:element>
 830         <xs:group maxOccurs="unbounded" ref="ns1:value-text"/>
 831       </xs:sequence>
 832     </xs:complexType>
 833   </xs:element>
 834   <!-- 3.8.1.3 Classification -->
 835   <xs:element name="class">
 836     <xs:complexType>
 837       <xs:sequence>
 838         <xs:element minOccurs="0" name="parameters">
 839           <xs:complexType/>
 840         </xs:element>
 841         <xs:element name="text">
 842           <xs:simpleType>
 843             <xs:restriction base="xs:token">
 844               <xs:enumeration value="PUBLIC"/>
 845               <xs:enumeration value="PRIVATE"/>
 846               <xs:enumeration value="CONFIDENTIAL"/>
 847             </xs:restriction>
 848           </xs:simpleType>
 849         </xs:element>
 850       </xs:sequence>
 851     </xs:complexType>
 852   </xs:element>
 853   <!-- 3.8.1.4 Comment -->
 854   <xs:element name="comment">
 855     <xs:complexType>
 856       <xs:sequence>
 857         <xs:element minOccurs="0" name="parameters">
 858           <xs:complexType>
 859             <xs:choice minOccurs="0" maxOccurs="unbounded">
 860               <xs:element ref="ns1:altrep"/>
 861               <xs:element ref="ns1:language"/>
 862             </xs:choice>
 863           </xs:complexType>
 864         </xs:element>
 865         <xs:group ref="ns1:value-text"/>
 866       </xs:sequence>
 867     </xs:complexType>
 868   </xs:element>
 869   <!-- 3.8.1.5 Description -->
 870   <xs:element name="description">
 871     <xs:complexType>
 872       <xs:sequence>
 873         <xs:element minOccurs="0" name="parameters">
 874           <xs:complexType>
 875             <xs:choice minOccurs="0" maxOccurs="unbounded">
 876               <xs:element ref="ns1:altrep"/>
 877               <xs:element ref="ns1:language"/>
 878             </xs:choice>
 879           </xs:complexType>
 880         </xs:element>
 881         <xs:group ref="ns1:value-text"/>
 882       </xs:sequence>
 883     </xs:complexType>
 884   </xs:element>
 885   <!-- 3.8.1.6 Geographic Position -->
 886   <xs:element name="geo">
 887     <xs:complexType>
 888       <xs:sequence>
 889         <xs:element minOccurs="0" name="parameters">
 890           <xs:complexType/>
 891         </xs:element>
 892         <xs:element ref="ns1:latitude"/>
 893         <xs:element ref="ns1:longitude"/>
 894       </xs:sequence>
 895     </xs:complexType>
 896   </xs:element>
 897   <xs:element name="latitude" type="xs:float"/>
 898   <xs:element name="longitude" type="xs:float"/>
 899   <!-- 3.8.1.7 Location -->
 900   <xs:element name="location">
 901     <xs:complexType>
 902       <xs:sequence>
 903         <xs:element minOccurs="0" name="parameters">
 904           <xs:complexType>
 905             <xs:choice minOccurs="0" maxOccurs="unbounded">
 906               <xs:element ref="ns1:altrep"/>
 907               <xs:element ref="ns1:language"/>
 908             </xs:choice>
 909           </xs:complexType>
 910         </xs:element>
 911         <xs:group ref="ns1:value-text"/>
 912       </xs:sequence>
 913     </xs:complexType>
 914   </xs:element>
 915   <!-- 3.8.1.8 Percent Complete -->
 916   <xs:element name="percent-complete">
 917     <xs:complexType>
 918       <xs:sequence>
 919         <xs:element minOccurs="0" name="parameters">
 920           <xs:complexType/>
 921         </xs:element>
 922         <xs:element ref="ns1:integer"/>
 923       </xs:sequence>
 924     </xs:complexType>
 925   </xs:element>
 926   <!-- 3.8.1.9 Priority -->
 927   <xs:element name="priority">
 928     <xs:complexType>
 929       <xs:sequence>
 930         <xs:element minOccurs="0" name="parameters">
 931           <xs:complexType/>
 932         </xs:element>
 933         <xs:element ref="ns1:integer"/>
 934       </xs:sequence>
 935     </xs:complexType>
 936   </xs:element>
 937   <!-- 3.8.1.10 Resources -->
 938   <xs:element name="resources">
 939     <xs:complexType>
 940       <xs:sequence>
 941         <xs:element minOccurs="0" name="parameters">
 942           <xs:complexType>
 943             <xs:choice minOccurs="0" maxOccurs="unbounded">
 944               <xs:element ref="ns1:altrep"/>
 945               <xs:element ref="ns1:language"/>
 946             </xs:choice>
 947           </xs:complexType>
 948         </xs:element>
 949         <xs:group maxOccurs="unbounded" ref="ns1:value-text"/>
 950       </xs:sequence>
 951     </xs:complexType>
 952   </xs:element>
 953   <!-- 3.8.1.11 Status -->
 954   <xs:group name="property-status-event">
 955     <xs:sequence>
 956       <xs:element name="status">
 957         <xs:complexType>
 958           <xs:sequence>
 959             <xs:element minOccurs="0" name="parameters">
 960               <xs:complexType/>
 961             </xs:element>
 962             <xs:element name="text">
 963               <xs:simpleType>
 964                 <xs:restriction base="xs:token">
 965                   <xs:enumeration value="TENTATIVE"/>
 966                   <xs:enumeration value="CONFIRMED"/>
 967                   <xs:enumeration value="CANCELLED"/>
 968                 </xs:restriction>
 969               </xs:simpleType>
 970             </xs:element>
 971           </xs:sequence>
 972         </xs:complexType>
 973       </xs:element>
 974     </xs:sequence>
 975   </xs:group>
 976   <xs:group name="property-status-todo">
 977     <xs:sequence>
 978       <xs:element name="status">
 979         <xs:complexType>
 980           <xs:sequence>
 981             <xs:element minOccurs="0" name="parameters">
 982               <xs:complexType/>
 983             </xs:element>
 984             <xs:element name="text">
 985               <xs:simpleType>
 986                 <xs:restriction base="xs:token">
 987                   <xs:enumeration value="NEEDS-ACTION"/>
 988                   <xs:enumeration value="COMPLETED"/>
 989                   <xs:enumeration value="IN-PROCESS"/>
 990                   <xs:enumeration value="CANCELLED"/>
 991                 </xs:restriction>
 992               </xs:simpleType>
 993             </xs:element>
 994           </xs:sequence>
 995         </xs:complexType>
 996       </xs:element>
 997     </xs:sequence>
 998   </xs:group>
 999   <xs:group name="property-status-jour">
1000     <xs:sequence>
1001       <xs:element name="status">
1002         <xs:complexType>
1003           <xs:sequence>
1004             <xs:element minOccurs="0" name="parameters">
1005               <xs:complexType/>
1006             </xs:element>
1007             <xs:element name="text">
1008               <xs:simpleType>
1009                 <xs:restriction base="xs:token">
1010                   <xs:enumeration value="DRAFT"/>
1011                   <xs:enumeration value="FINAL"/>
1012                   <xs:enumeration value="CANCELLED"/>
1013                 </xs:restriction>
1014               </xs:simpleType>
1015             </xs:element>
1016           </xs:sequence>
1017         </xs:complexType>
1018       </xs:element>
1019     </xs:sequence>
1020   </xs:group>
1021   <!-- 3.8.1.12 Summary -->
1022   <xs:element name="summary">
1023     <xs:complexType>
1024       <xs:sequence>
1025         <xs:element minOccurs="0" name="parameters">
1026           <xs:complexType>
1027             <xs:choice minOccurs="0" maxOccurs="unbounded">
1028               <xs:element ref="ns1:altrep"/>
1029               <xs:element ref="ns1:language"/>
1030             </xs:choice>
1031           </xs:complexType>
1032         </xs:element>
1033         <xs:group ref="ns1:value-text"/>
1034       </xs:sequence>
1035     </xs:complexType>
1036   </xs:element>
1037   <!-- 3.8.2 Date and Time Component Properties -->
1038   <!-- 3.8.2.1 Date/Time Completed -->
1039   <xs:element name="completed">
1040     <xs:complexType>
1041       <xs:sequence>
1042         <xs:element minOccurs="0" name="parameters">
1043           <xs:complexType/>
1044         </xs:element>
1045         <xs:element ref="ns1:date-time"/>
1046       </xs:sequence>
1047     </xs:complexType>
1048   </xs:element>
1049   <!-- 3.8.2.2 Date/Time End -->
1050   <xs:element name="dtend">
1051     <xs:complexType>
1052       <xs:sequence>
1053         <xs:element minOccurs="0" name="parameters">
1054           <xs:complexType>
1055             <xs:group minOccurs="0" ref="ns1:tzidparam"/>
1056           </xs:complexType>
1057         </xs:element>
1058         <xs:choice>
1059           <xs:element ref="ns1:date-time"/>
1060           <xs:element ref="ns1:date"/>
1061         </xs:choice>
1062       </xs:sequence>
1063     </xs:complexType>
1064   </xs:element>
1065   <!-- 3.8.2.3 Date/Time Due -->
1066   <xs:element name="due">
1067     <xs:complexType>
1068       <xs:sequence>
1069         <xs:element minOccurs="0" name="parameters">
1070           <xs:complexType>
1071             <xs:group minOccurs="0" ref="ns1:tzidparam"/>
1072           </xs:complexType>
1073         </xs:element>
1074         <xs:choice>
1075           <xs:element ref="ns1:date-time"/>
1076           <xs:element ref="ns1:date"/>
1077         </xs:choice>
1078       </xs:sequence>
1079     </xs:complexType>
1080   </xs:element>
1081   <!-- 3.8.2.4 Date/Time Start -->
1082   <xs:element name="dtstart">
1083     <xs:complexType>
1084       <xs:sequence>
1085         <xs:element minOccurs="0" name="parameters">
1086           <xs:complexType>
1087             <xs:group minOccurs="0" ref="ns1:tzidparam"/>
1088           </xs:complexType>
1089         </xs:element>
1090         <xs:choice>
1091           <xs:element ref="ns1:date-time"/>
1092           <xs:element ref="ns1:date"/>
1093         </xs:choice>
1094       </xs:sequence>
1095     </xs:complexType>
1096   </xs:element>
1097   <!-- 3.8.2.5 Duration -->
1098   <xs:group name="property-duration">
1099     <xs:sequence>
1100       <xs:element name="duration">
1101         <xs:complexType>
1102           <xs:sequence>
1103             <xs:element minOccurs="0" name="parameters">
1104               <xs:complexType/>
1105             </xs:element>
1106             <xs:group ref="ns1:value-duration"/>
1107           </xs:sequence>
1108         </xs:complexType>
1109       </xs:element>
1110     </xs:sequence>
1111   </xs:group>
1112   <!-- 3.8.2.6 Free/Busy Time -->
1113   <xs:element name="freebusy">
1114     <xs:complexType>
1115       <xs:sequence>
1116         <xs:element minOccurs="0" name="parameters">
1117           <xs:complexType>
1118             <xs:sequence>
1119               <xs:element minOccurs="0" ref="ns1:fbtype"/>
1120             </xs:sequence>
1121           </xs:complexType>
1122         </xs:element>
1123         <xs:element maxOccurs="unbounded" ref="ns1:period"/>
1124       </xs:sequence>
1125     </xs:complexType>
1126   </xs:element>
1127   <!-- 3.8.2.7 Time Transparency -->
1128   <xs:element name="transp">
1129     <xs:complexType>
1130       <xs:sequence>
1131         <xs:element minOccurs="0" name="parameters">
1132           <xs:complexType/>
1133         </xs:element>
1134         <xs:element name="text">
1135           <xs:simpleType>
1136             <xs:restriction base="xs:token">
1137               <xs:enumeration value="OPAQUE"/>
1138               <xs:enumeration value="TRANSPARENT"/>
1139             </xs:restriction>
1140           </xs:simpleType>
1141         </xs:element>
1142       </xs:sequence>
1143     </xs:complexType>
1144   </xs:element>
1145   <!-- 3.8.3 Time Zone Component Properties -->
1146   <!-- 3.8.3.1 Time Zone Identifier -->
1147   <xs:group name="property-tzid">
1148     <xs:sequence>
1149       <xs:element name="tzid">
1150         <xs:complexType>
1151           <xs:sequence>
1152             <xs:element minOccurs="0" name="parameters">
1153               <xs:complexType/>
1154             </xs:element>
1155             <xs:group ref="ns1:value-text"/>
1156           </xs:sequence>
1157         </xs:complexType>
1158       </xs:element>
1159     </xs:sequence>
1160   </xs:group>
1161   <!-- 3.8.3.2 Time Zone Name -->
1162   <xs:element name="tzname">
1163     <xs:complexType>
1164       <xs:sequence>
1165         <xs:element minOccurs="0" name="parameters">
1166           <xs:complexType>
1167             <xs:sequence>
1168               <xs:element minOccurs="0" ref="ns1:language"/>
1169             </xs:sequence>
1170           </xs:complexType>
1171         </xs:element>
1172         <xs:group ref="ns1:value-text"/>
1173       </xs:sequence>
1174     </xs:complexType>
1175   </xs:element>
1176   <!-- 3.8.3.3 Time Zone Offset From -->
1177   <xs:element name="tzoffsetfrom">
1178     <xs:complexType>
1179       <xs:sequence>
1180         <xs:element minOccurs="0" name="parameters">
1181           <xs:complexType/>
1182         </xs:element>
1183         <xs:element ref="ns1:utc-offset"/>
1184       </xs:sequence>
1185     </xs:complexType>
1186   </xs:element>
1187   <!-- 3.8.3.4 Time Zone Offset To -->
1188   <xs:element name="tzoffsetto">
1189     <xs:complexType>
1190       <xs:sequence>
1191         <xs:element minOccurs="0" name="parameters">
1192           <xs:complexType/>
1193         </xs:element>
1194         <xs:element ref="ns1:utc-offset"/>
1195       </xs:sequence>
1196     </xs:complexType>
1197   </xs:element>
1198   <!-- 3.8.3.5 Time Zone URL -->
1199   <xs:element name="tzurl">
1200     <xs:complexType>
1201       <xs:sequence>
1202         <xs:element minOccurs="0" name="parameters">
1203           <xs:complexType/>
1204         </xs:element>
1205         <xs:element ref="ns1:uri"/>
1206       </xs:sequence>
1207     </xs:complexType>
1208   </xs:element>
1209   <!-- 3.8.4 Relationship Component Properties -->
1210   <!-- 3.8.4.1 Attendee -->
1211   <xs:element name="attendee">
1212     <xs:complexType>
1213       <xs:sequence>
1214         <xs:element minOccurs="0" name="parameters">
1215           <xs:complexType>
1216             <xs:choice minOccurs="0" maxOccurs="unbounded">
1217               <xs:element ref="ns1:cutype"/>
1218               <xs:element ref="ns1:member"/>
1219               <xs:element ref="ns1:role"/>
1220               <xs:element ref="ns1:partstat"/>
1221               <xs:element ref="ns1:rsvp"/>
1222               <xs:element ref="ns1:delegated-to"/>
1223               <xs:element ref="ns1:delegated-from"/>
1224               <xs:element ref="ns1:sent-by"/>
1225               <xs:element ref="ns1:cn"/>
1226               <xs:element ref="ns1:dir"/>
1227               <xs:element ref="ns1:language"/>
1228             </xs:choice>
1229           </xs:complexType>
1230         </xs:element>
1231         <xs:element ref="ns1:cal-address"/>
1232       </xs:sequence>
1233     </xs:complexType>
1234   </xs:element>
1235   <!-- 3.8.4.2 Contact -->
1236   <xs:element name="contact">
1237     <xs:complexType>
1238       <xs:sequence>
1239         <xs:element minOccurs="0" name="parameters">
1240           <xs:complexType>
1241             <xs:choice minOccurs="0" maxOccurs="unbounded">
1242               <xs:element ref="ns1:altrep"/>
1243               <xs:element ref="ns1:language"/>
1244             </xs:choice>
1245           </xs:complexType>
1246         </xs:element>
1247         <xs:group ref="ns1:value-text"/>
1248       </xs:sequence>
1249     </xs:complexType>
1250   </xs:element>
1251   <!-- 3.8.4.3 Organizer -->
1252   <xs:element name="organizer">
1253     <xs:complexType>
1254       <xs:sequence>
1255         <xs:element minOccurs="0" name="parameters">
1256           <xs:complexType>
1257             <xs:choice minOccurs="0" maxOccurs="unbounded">
1258               <xs:element ref="ns1:cn"/>
1259               <xs:element ref="ns1:dir"/>
1260               <xs:element ref="ns1:sent-by"/>
1261               <xs:element ref="ns1:language"/>
1262             </xs:choice>
1263           </xs:complexType>
1264         </xs:element>
1265         <xs:element ref="ns1:cal-address"/>
1266       </xs:sequence>
1267     </xs:complexType>
1268   </xs:element>
1269   <!-- 3.8.4.4 Recurrence ID -->
1270   <xs:element name="recurrence-id">
1271     <xs:complexType>
1272       <xs:sequence>
1273         <xs:element minOccurs="0" name="parameters">
1274           <xs:complexType>
1275             <xs:choice minOccurs="0" maxOccurs="unbounded">
1276               <xs:group ref="ns1:tzidparam"/>
1277               <xs:element ref="ns1:range"/>
1278             </xs:choice>
1279           </xs:complexType>
1280         </xs:element>
1281         <xs:choice>
1282           <xs:element ref="ns1:date-time"/>
1283           <xs:element ref="ns1:date"/>
1284         </xs:choice>
1285       </xs:sequence>
1286     </xs:complexType>
1287   </xs:element>
1288   <!-- 3.8.4.5 Related-To -->
1289   <xs:element name="related-to">
1290     <xs:complexType>
1291       <xs:sequence>
1292         <xs:element minOccurs="0" name="parameters">
1293           <xs:complexType>
1294             <xs:sequence>
1295               <xs:element minOccurs="0" ref="ns1:reltype"/>
1296             </xs:sequence>
1297           </xs:complexType>
1298         </xs:element>
1299         <xs:group ref="ns1:value-text"/>
1300       </xs:sequence>
1301     </xs:complexType>
1302   </xs:element>
1303   <!-- 3.8.4.6 Uniform Resource Locator -->
1304   <xs:element name="url">
1305     <xs:complexType>
1306       <xs:sequence>
1307         <xs:element minOccurs="0" name="parameters">
1308           <xs:complexType/>
1309         </xs:element>
1310         <xs:element ref="ns1:uri"/>
1311       </xs:sequence>
1312     </xs:complexType>
1313   </xs:element>
1314   <!-- 3.8.4.7 Unique Identifier -->
1315   <xs:element name="uid">
1316     <xs:complexType>
1317       <xs:sequence>
1318         <xs:element minOccurs="0" name="parameters">
1319           <xs:complexType/>
1320         </xs:element>
1321         <xs:group ref="ns1:value-text"/>
1322       </xs:sequence>
1323     </xs:complexType>
1324   </xs:element>
1325   <!-- 3.8.5 Recurrence Component Properties -->
1326   <!-- 3.8.5.1 Exception Date/Times -->
1327   <xs:element name="exdate">
1328     <xs:complexType>
1329       <xs:sequence>
1330         <xs:element minOccurs="0" name="parameters">
1331           <xs:complexType>
1332             <xs:group minOccurs="0" ref="ns1:tzidparam"/>
1333           </xs:complexType>
1334         </xs:element>
1335         <xs:choice>
1336           <xs:element maxOccurs="unbounded" ref="ns1:date-time"/>
1337           <xs:element maxOccurs="unbounded" ref="ns1:date"/>
1338         </xs:choice>
1339       </xs:sequence>
1340     </xs:complexType>
1341   </xs:element>
1342   <!-- 3.8.5.2 Recurrence Date/Times -->
1343   <xs:element name="rdate">
1344     <xs:complexType>
1345       <xs:sequence>
1346         <xs:element minOccurs="0" name="parameters">
1347           <xs:complexType>
1348             <xs:group minOccurs="0" ref="ns1:tzidparam"/>
1349           </xs:complexType>
1350         </xs:element>
1351         <xs:choice>
1352           <xs:element maxOccurs="unbounded" ref="ns1:date-time"/>
1353           <xs:element maxOccurs="unbounded" ref="ns1:date"/>
1354           <xs:element maxOccurs="unbounded" ref="ns1:period"/>
1355         </xs:choice>
1356       </xs:sequence>
1357     </xs:complexType>
1358   </xs:element>
1359   <!-- 3.8.5.3 Recurrence Rule -->
1360   <xs:element name="rrule">
1361     <xs:complexType>
1362       <xs:sequence>
1363         <xs:element minOccurs="0" name="parameters">
1364           <xs:complexType/>
1365         </xs:element>
1366         <xs:element ref="ns1:recur"/>
1367       </xs:sequence>
1368     </xs:complexType>
1369   </xs:element>
1370   <!-- 3.8.6 Alarm Component Properties -->
1371   <!-- 3.8.6.1 Action -->
1372   <xs:element name="action">
1373     <xs:complexType>
1374       <xs:sequence>
1375         <xs:element minOccurs="0" name="parameters">
1376           <xs:complexType/>
1377         </xs:element>
1378         <xs:element name="text">
1379           <xs:simpleType>
1380             <xs:restriction base="xs:token">
1381               <xs:enumeration value="AUDIO"/>
1382               <xs:enumeration value="DISPLAY"/>
1383               <xs:enumeration value="EMAIL"/>
1384             </xs:restriction>
1385           </xs:simpleType>
1386         </xs:element>
1387       </xs:sequence>
1388     </xs:complexType>
1389   </xs:element>
1390   <!-- 3.8.6.2 Repeat Count -->
1391   <xs:element name="repeat">
1392     <xs:complexType>
1393       <xs:sequence>
1394         <xs:element minOccurs="0" name="parameters">
1395           <xs:complexType/>
1396         </xs:element>
1397         <xs:element ref="ns1:integer"/>
1398       </xs:sequence>
1399     </xs:complexType>
1400   </xs:element>
1401   <!-- 3.8.6.3 Trigger -->
1402   <xs:element name="trigger">
1403     <xs:complexType>
1404       <xs:choice>
1405         <xs:sequence>
1406           <xs:element minOccurs="0" name="parameters">
1407             <xs:complexType>
1408               <xs:sequence>
1409                 <xs:element minOccurs="0" ref="ns1:related"/>
1410               </xs:sequence>
1411             </xs:complexType>
1412           </xs:element>
1413           <xs:group ref="ns1:value-duration"/>
1414         </xs:sequence>
1415         <xs:sequence>
1416           <xs:element minOccurs="0" name="parameters">
1417             <xs:complexType/>
1418           </xs:element>
1419           <xs:element ref="ns1:date-time"/>
1420         </xs:sequence>
1421       </xs:choice>
1422     </xs:complexType>
1423   </xs:element>
1424   <!-- 3.8.7 Change Management Component Properties -->
1425   <!-- 3.8.7.1 Date/Time Created -->
1426   <xs:element name="created">
1427     <xs:complexType>
1428       <xs:sequence>
1429         <xs:element minOccurs="0" name="parameters">
1430           <xs:complexType/>
1431         </xs:element>
1432         <xs:element ref="ns1:date-time"/>
1433       </xs:sequence>
1434     </xs:complexType>
1435   </xs:element>
1436   <!-- 3.8.7.2 Date/Time Stamp -->
1437   <xs:element name="dtstamp">
1438     <xs:complexType>
1439       <xs:sequence>
1440         <xs:element minOccurs="0" name="parameters">
1441           <xs:complexType/>
1442         </xs:element>
1443         <xs:element ref="ns1:date-time"/>
1444       </xs:sequence>
1445     </xs:complexType>
1446   </xs:element>
1447   <!-- 3.8.7.3 Last Modified -->
1448   <xs:element name="last-modified">
1449     <xs:complexType>
1450       <xs:sequence>
1451         <xs:element minOccurs="0" name="parameters">
1452           <xs:complexType/>
1453         </xs:element>
1454         <xs:element ref="ns1:date-time"/>
1455       </xs:sequence>
1456     </xs:complexType>
1457   </xs:element>
1458   <!-- 3.8.7.4 Sequence Number -->
1459   <xs:element name="sequence">
1460     <xs:complexType>
1461       <xs:sequence>
1462         <xs:element minOccurs="0" name="parameters">
1463           <xs:complexType/>
1464         </xs:element>
1465         <xs:element ref="ns1:integer"/>
1466       </xs:sequence>
1467     </xs:complexType>
1468   </xs:element>
1469   <!-- 3.8.8 Miscellaneous Component Properties -->
1470   <!-- 3.8.8.3 Request Status -->
1471   <xs:element name="request-status">
1472     <xs:complexType>
1473       <xs:sequence>
1474         <xs:element minOccurs="0" name="parameters">
1475           <xs:complexType>
1476             <xs:sequence>
1477               <xs:element minOccurs="0" ref="ns1:language"/>
1478             </xs:sequence>
1479           </xs:complexType>
1480         </xs:element>
1481         <xs:element ref="ns1:code"/>
1482         <xs:element name="description" type="xs:string"/>
1483         <xs:element minOccurs="0" ref="ns1:data"/>
1484       </xs:sequence>
1485     </xs:complexType>
1486   </xs:element>
1487   <xs:element name="code" type="xs:string"/>
1488   <xs:element name="data" type="xs:string"/>
1489 </xs:schema>