org.simantics.maps.server/server/dist/share/gdal/ogrvrt.xsd

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <!--
   3 /******************************************************************************
   4  * $Id: ogrvrt.xsd 34203 2016-05-10 14:06:35Z rouault $
   5  *
   6  * Project:  GDAL/OGR
   7  * Purpose:  XML Schema for OGR VRT files.
   8  * Author:   Even Rouault, <even dot rouault at mines dash paris dot org>
   9  *
  10  **********************************************************************
  11  * Copyright (c) 2012, Even Rouault
  12  *
  13  * Permission is hereby granted, free of charge, to any person obtaining a
  14  * copy of this software and associated documentation files (the "Software"),
  15  * to deal in the Software without restriction, including without limitation
  16  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  17  * and/or sell copies of the Software, and to permit persons to whom the
  18  * Software is furnished to do so, subject to the following conditions:
  19  *
  20  * The above copyright notice and this permission notice shall be included
  21  * in all copies or substantial portions of the Software.
  22  *
  23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  24  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  25  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  26  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  27  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  28  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  29  * DEALINGS IN THE SOFTWARE.
  30  ****************************************************************************/
  31 -->
  32 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" version="1.0">
  33     <xs:element name="OGRVRTDataSource">
  34         <xs:complexType>
  35             <xs:sequence>
  36                 <xs:choice minOccurs="0" maxOccurs="unbounded">
  37                     <xs:element name="Metadata" type="MetadataType"/> <!-- may be repeated -->
  38                     <xs:element name="OGRVRTLayer" type="OGRVRTLayerType"/>
  39                     <xs:element name="OGRVRTWarpedLayer" type="OGRVRTWarpedLayerType"/>
  40                     <xs:element name="OGRVRTUnionLayer" type="OGRVRTUnionLayerType"/>
  41                 </xs:choice>
  42             </xs:sequence>
  43         </xs:complexType>
  44     </xs:element>
  45
  46     <xs:complexType name="MetadataType">
  47         <xs:sequence>
  48             <!--<xs:choice>-->
  49                 <!--<xs:element name="MDI" type="MDIType" minOccurs="0" maxOccurs="unbounded"/>-->
  50                 <xs:any processContents="skip" minOccurs="0" maxOccurs="unbounded"/>
  51             <!--</xs:choice>-->
  52         </xs:sequence>
  53         <xs:attribute name="domain" type="xs:string"/>
  54         <xs:attribute name="format" type="xs:string"/>
  55     </xs:complexType>
  56
  57     <xs:complexType name="OGRVRTLayerType">
  58         <xs:sequence>
  59             <xs:choice minOccurs="0" maxOccurs="unbounded">
  60                 <xs:element name="Metadata" type="MetadataType"/> <!-- may be repeated -->
  61                 <xs:element name="SrcDataSource" type="SrcDataSourceType">
  62                     <xs:annotation>
  63                         <xs:documentation>Required element</xs:documentation>
  64                     </xs:annotation>
  65                 </xs:element>
  66                 <xs:element name="OpenOptions" type="OpenOptionsType">
  67                     <xs:annotation>
  68                         <xs:documentation>Optional element</xs:documentation>
  69                     </xs:annotation>
  70                 </xs:element>
  71                 <xs:element name="SrcLayer" type="nonEmptyStringType">
  72                     <xs:annotation>
  73                         <xs:documentation>SrcLayer or(eclusive) SrcSQL are required elements</xs:documentation>
  74                     </xs:annotation>
  75                 </xs:element>
  76                 <xs:element name="SrcSQL">
  77                     <xs:complexType>
  78                         <xs:simpleContent>
  79                             <xs:extension base="nonEmptyStringType">
  80                                 <xs:attribute name="dialect" type="nonEmptyStringType"/>
  81                             </xs:extension>
  82                         </xs:simpleContent>
  83                     </xs:complexType>
  84                 </xs:element>
  85                 <xs:element name="FID" type="FIDType"/>
  86                 <xs:element name="Style" type="nonEmptyStringType"/>
  87                 <xs:element name="GeometryType" type="GeometryTypeType">
  88                     <xs:annotation>
  89                         <xs:documentation>Use GeometryField.GeometryType for multi-geometry field support.</xs:documentation>
  90                     </xs:annotation>
  91                 </xs:element>
  92                 <xs:element name="LayerSRS" type="nonEmptyStringType">
  93                     <xs:annotation>
  94                         <xs:documentation>Use GeometryField.SRS for multi-geometry field support.</xs:documentation>
  95                     </xs:annotation>
  96                 </xs:element>
  97                 <xs:element name="Field" type="FieldType">
  98                     <xs:annotation>
  99                         <xs:documentation>May be repeated</xs:documentation>
 100                     </xs:annotation>
 101                 </xs:element>
 102                 <xs:element name="GeometryField" type="GeometryFieldType">
 103                     <xs:annotation>
 104                         <xs:documentation>May be repeated</xs:documentation>
 105                     </xs:annotation>
 106                 </xs:element>
 107                 <xs:element name="SrcRegion" type="SrcRegionType">
 108                     <xs:annotation>
 109                         <xs:documentation>Use GeometryField.SrcRegion for multi-geometry field support.</xs:documentation>
 110                     </xs:annotation>
 111                 </xs:element>
 112                 <xs:element name="attrFilterPassThrough" type="OGRBooleanType">
 113                     <xs:annotation>
 114                         <xs:documentation>Default to FALSE.</xs:documentation>
 115                     </xs:annotation>
 116                 </xs:element>
 117                 <xs:element name="FeatureCount" type="xs:integer"/>
 118                 <xs:group ref="ExtentType">
 119                     <xs:annotation>
 120                         <xs:documentation>Use GeometryField.ExtentXMin, etc... for multi-geometry field support.</xs:documentation>
 121                     </xs:annotation>
 122                 </xs:group>
 123             </xs:choice>
 124         </xs:sequence>
 125         <xs:attribute name="name" type="nonEmptyStringType" use="required"/>
 126     </xs:complexType>
 127
 128     <xs:complexType name="OpenOptionsType">
 129         <xs:sequence>
 130             <xs:element name="OOI" type="OOIType" minOccurs="0" maxOccurs="unbounded"/>
 131         </xs:sequence>
 132     </xs:complexType>
 133
 134     <xs:complexType name="OOIType">
 135         <xs:simpleContent>
 136             <xs:extension base="nonEmptyStringType">
 137                 <xs:attribute name="key" type="xs:string"/>
 138             </xs:extension>
 139         </xs:simpleContent>
 140     </xs:complexType>
 141
 142     <xs:complexType name="FIDType">
 143         <xs:simpleContent>
 144             <xs:extension base="nonEmptyStringType">
 145                 <xs:attribute name="name" type="xs:string">
 146                     <xs:annotation>
 147                         <xs:documentation>A user-facing name can be specified here so that a FID column name is reported even if it is not reported as a regular field.</xs:documentation>
 148                     </xs:annotation>
 149                 </xs:attribute>
 150             </xs:extension>
 151         </xs:simpleContent>
 152     </xs:complexType>
 153
 154     <xs:group name="ExtentType">
 155         <xs:sequence>
 156             <xs:element name="ExtentXMin" type="xs:double" minOccurs="1" maxOccurs="1"/>
 157             <xs:element name="ExtentYMin" type="xs:double" minOccurs="1" maxOccurs="1"/>
 158             <xs:element name="ExtentXMax" type="xs:double" minOccurs="1" maxOccurs="1"/>
 159             <xs:element name="ExtentYMax" type="xs:double" minOccurs="1" maxOccurs="1"/>
 160         </xs:sequence>
 161     </xs:group>
 162
 163     <xs:complexType name="SrcDataSourceType">
 164         <xs:simpleContent>
 165             <xs:extension base="nonEmptyStringType">
 166                 <xs:attribute name="relativeToVRT" type="OGRBooleanType" default="FALSE">
 167                     <xs:annotation>
 168                         <xs:documentation>Default to FALSE.</xs:documentation>
 169                     </xs:annotation>
 170                 </xs:attribute>
 171                 <!-- alternate case -->
 172                 <xs:attribute name="relativetoVRT" type="OGRBooleanType" default="FALSE">
 173                     <xs:annotation>
 174                         <xs:documentation>Default to FALSE.</xs:documentation>
 175                     </xs:annotation>
 176                 </xs:attribute>
 177                 <xs:attribute name="shared" type="OGRBooleanType"/>
 178             </xs:extension>
 179         </xs:simpleContent>
 180     </xs:complexType>
 181
 182     <xs:simpleType name="nonEmptyStringType">
 183         <xs:restriction base="xs:string">
 184             <xs:minLength value="1"/>
 185         </xs:restriction>
 186     </xs:simpleType>
 187
 188     <xs:simpleType name="GeometryTypeType">
 189         <xs:restriction base="xs:string">
 190             <xs:enumeration value="wkbNone"/>
 191             <xs:enumeration value="wkbUnknown"/>
 192             <xs:enumeration value="wkbPoint"/>
 193             <xs:enumeration value="wkbLineString"/>
 194             <xs:enumeration value="wkbPolygon"/>
 195             <xs:enumeration value="wkbMultiPoint"/>
 196             <xs:enumeration value="wkbMultiLineString"/>
 197             <xs:enumeration value="wkbMultiPolygon"/>
 198             <xs:enumeration value="wkbGeometryCollection"/>
 199             <xs:enumeration value="wkbCircularString"/> <!-- new in GDAL 2.0 -->
 200             <xs:enumeration value="wkbCompoundCurve"/> <!-- new in GDAL 2.0 -->
 201             <xs:enumeration value="wkbCurvePolygon"/> <!-- new in GDAL 2.0 -->
 202             <xs:enumeration value="wkbMultiCurve"/> <!-- new in GDAL 2.0 -->
 203             <xs:enumeration value="wkbMultiSurface"/> <!-- new in GDAL 2.0 -->
 204             <xs:enumeration value="wkbCurve"/> <!-- new in GDAL 2.1 -->
 205             <xs:enumeration value="wkbSurface"/> <!-- new in GDAL 2.1 -->
 206             <xs:enumeration value="wkbPoint25D"/>
 207             <xs:enumeration value="wkbLineString25D"/>
 208             <xs:enumeration value="wkbPolygon25D"/>
 209             <xs:enumeration value="wkbMultiPoint25D"/>
 210             <xs:enumeration value="wkbMultiLineString25D"/>
 211             <xs:enumeration value="wkbMultiPolygon25D"/>
 212             <xs:enumeration value="wkbGeometryCollection25D"/>
 213             <xs:enumeration value="wkbCircularStringZ"/> <!-- new in GDAL 2.0 -->
 214             <xs:enumeration value="wkbCompoundCurveZ"/> <!-- new in GDAL 2.0 -->
 215             <xs:enumeration value="wkbCurvePolygonZ"/> <!-- new in GDAL 2.0 -->
 216             <xs:enumeration value="wkbMultiCurveZ"/> <!-- new in GDAL 2.0 -->
 217             <xs:enumeration value="wkbMultiSurfaceZ"/> <!-- new in GDAL 2.0 -->
 218             <xs:enumeration value="wkbCurveZ"/> <!-- new in GDAL 2.1 -->
 219             <xs:enumeration value="wkbSurfaceZ"/> <!-- new in GDAL 2.1 -->
 220
 221             <!-- below is new in GDAL 2.1 -->
 222             <xs:enumeration value="wkbPointM"/>
 223             <xs:enumeration value="wkbLineStringM"/>
 224             <xs:enumeration value="wkbPolygonM"/>
 225             <xs:enumeration value="wkbMultiPointM"/>
 226             <xs:enumeration value="wkbMultiLineStringM"/>
 227             <xs:enumeration value="wkbMultiPolygonM"/>
 228             <xs:enumeration value="wkbGeometryCollectionM"/>
 229             <xs:enumeration value="wkbCircularStringM"/>
 230             <xs:enumeration value="wkbCompoundCurveM"/>
 231             <xs:enumeration value="wkbCurvePolygonM"/>
 232             <xs:enumeration value="wkbMultiCurveM"/>
 233             <xs:enumeration value="wkbMultiSurfaceM"/>
 234             <xs:enumeration value="wkbCurveM"/>
 235             <xs:enumeration value="wkbSurfaceM"/>
 236
 237             <xs:enumeration value="wkbPointZM"/>
 238             <xs:enumeration value="wkbLineStringZM"/>
 239             <xs:enumeration value="wkbPolygonZM"/>
 240             <xs:enumeration value="wkbMultiPointZM"/>
 241             <xs:enumeration value="wkbMultiLineStringZM"/>
 242             <xs:enumeration value="wkbMultiPolygonZM"/>
 243             <xs:enumeration value="wkbGeometryCollectionZM"/>
 244             <xs:enumeration value="wkbCircularStringZM"/>
 245             <xs:enumeration value="wkbCompoundCurveZM"/>
 246             <xs:enumeration value="wkbCurvePolygonZM"/>
 247             <xs:enumeration value="wkbMultiCurveZM"/>
 248             <xs:enumeration value="wkbMultiSurfaceZM"/>
 249             <xs:enumeration value="wkbCurveZM"/>
 250             <xs:enumeration value="wkbSurfaceZM"/>
 251
 252         </xs:restriction>
 253     </xs:simpleType>
 254
 255     <xs:complexType name="FieldTypeWithoutSrc">
 256         <xs:attribute name="name" type="nonEmptyStringType" use="required"/>
 257         <xs:attribute name="type" type="OGRFieldTypeType" default="String"/>
 258         <xs:attribute name="subtype" type="OGRFieldSubTypeType" default="None"/>  <!-- new in GDAL 2.0 -->
 259         <xs:attribute name="width" type="xs:nonNegativeInteger"/>
 260         <xs:attribute name="precision" type="xs:nonNegativeInteger"/>
 261         <xs:attribute name="nullable" type="OGRBooleanType" default="true"/>  <!-- new in GDAL 2.0 -->
 262         <xs:attribute name="default" type="xs:string"/>  <!-- new in GDAL 2.0 -->
 263     </xs:complexType>
 264
 265     <xs:complexType name="FieldType">
 266         <xs:complexContent>
 267             <xs:extension base="FieldTypeWithoutSrc">
 268                 <xs:attribute name="src" type="nonEmptyStringType">
 269                     <xs:annotation>
 270                         <xs:documentation>Defaults to the value of "name" if not specified.</xs:documentation>
 271                     </xs:annotation>
 272                 </xs:attribute>
 273             </xs:extension>
 274         </xs:complexContent>
 275     </xs:complexType>
 276
 277     <xs:simpleType name="OGRFieldTypeType">
 278         <xs:restriction base="xs:string">
 279             <xs:enumeration value="Integer"/>
 280             <xs:enumeration value="integer"/>
 281             <xs:enumeration value="Integer64"/>
 282             <xs:enumeration value="integer64"/>
 283             <xs:enumeration value="Real"/>
 284             <xs:enumeration value="real"/>
 285             <xs:enumeration value="String"/>
 286             <xs:enumeration value="string"/>
 287             <xs:enumeration value="IntegerList"/>
 288             <xs:enumeration value="integerlist"/>
 289             <xs:enumeration value="Integer64List"/>
 290             <xs:enumeration value="integer64list"/>
 291             <xs:enumeration value="RealList"/>
 292             <xs:enumeration value="reallist"/>
 293             <xs:enumeration value="StringList"/>
 294             <xs:enumeration value="stringlist"/>
 295             <xs:enumeration value="Binary"/>
 296             <xs:enumeration value="binary"/>
 297             <xs:enumeration value="Date"/>
 298             <xs:enumeration value="date"/>
 299             <xs:enumeration value="Time"/>
 300             <xs:enumeration value="time"/>
 301             <xs:enumeration value="DateTime"/>
 302             <xs:enumeration value="datetime"/>
 303         </xs:restriction>
 304     </xs:simpleType>
 305
 306     <xs:simpleType name="OGRFieldSubTypeType">
 307         <xs:restriction base="xs:string">
 308             <xs:enumeration value="None"/>
 309             <xs:enumeration value="Boolean"/>
 310             <xs:enumeration value="Int16"/>
 311             <xs:enumeration value="Float32"/>
 312         </xs:restriction>
 313     </xs:simpleType>
 314
 315     <xs:simpleType name="EncodingType">
 316         <xs:restriction base="xs:string">
 317             <xs:enumeration value="Direct"/>
 318             <xs:enumeration value="None"/>
 319             <xs:enumeration value="WKT"/>
 320             <xs:enumeration value="WKB"/>
 321             <xs:enumeration value="Shape"/>
 322             <xs:enumeration value="shape"/>
 323             <xs:enumeration value="PointFromColumns"/>
 324         </xs:restriction>
 325     </xs:simpleType>
 326
 327     <xs:attributeGroup name="GeometryFieldTypeAttrGroupWithoutSrc">
 328         <xs:attribute name="encoding" type="EncodingType">
 329             <xs:annotation>
 330                 <xs:documentation>Defaults to Direct.</xs:documentation>
 331             </xs:annotation>
 332         </xs:attribute>
 333         <xs:attribute name="name" type="xs:string">
 334             <xs:annotation>
 335                 <xs:documentation>Name of the geometry field</xs:documentation>
 336             </xs:annotation>
 337         </xs:attribute>
 338         <xs:attribute name="x" type="nonEmptyStringType">
 339             <xs:annotation>
 340                 <xs:documentation>Only used if encoding = "PointFromColumns"</xs:documentation>
 341             </xs:annotation>
 342         </xs:attribute>
 343         <xs:attribute name="y" type="nonEmptyStringType">
 344             <xs:annotation>
 345                 <xs:documentation>Only used if encoding = "PointFromColumns"</xs:documentation>
 346             </xs:annotation>
 347         </xs:attribute>
 348         <xs:attribute name="z" type="nonEmptyStringType">
 349             <xs:annotation>
 350                 <xs:documentation>Only used if encoding = "PointFromColumns"</xs:documentation>
 351             </xs:annotation>
 352         </xs:attribute>
 353         <xs:attribute name="m" type="nonEmptyStringType">
 354             <xs:annotation>
 355                 <xs:documentation>Only used if encoding = "PointFromColumns"</xs:documentation>
 356             </xs:annotation>
 357         </xs:attribute>
 358         <xs:attribute name="useSpatialSubquery" type="OGRBooleanType">
 359             <xs:annotation>
 360                 <xs:documentation>Only used if encoding = "PointFromColumns". Defaults to TRUE.</xs:documentation>
 361             </xs:annotation>
 362         </xs:attribute>
 363         <xs:attribute name="reportSrcColumn" type="OGRBooleanType">
 364             <xs:annotation>
 365                 <xs:documentation>Only used if no Field element is found at the OGRVRTLayer level</xs:documentation>
 366             </xs:annotation>
 367         </xs:attribute>
 368         <xs:attribute name="nullable" type="OGRBooleanType" default="true"/>  <!-- new in GDAL 2.0 -->
 369     </xs:attributeGroup>
 370
 371     <xs:complexType name="GeometryFieldTypeWithoutSrc">
 372         <xs:sequence>
 373             <xs:choice minOccurs="0" maxOccurs="unbounded">
 374                 <xs:element name="GeometryType" type="GeometryTypeType"/>
 375                 <xs:element name="SrcRegion" type="SrcRegionType"/>
 376                 <xs:element name="SRS" type="nonEmptyStringType"/>
 377                 <xs:group ref="ExtentType"/>
 378             </xs:choice>
 379         </xs:sequence>
 380         <xs:attributeGroup ref="GeometryFieldTypeAttrGroupWithoutSrc"/>
 381     </xs:complexType>
 382
 383     <xs:complexType name="GeometryFieldType">
 384         <xs:complexContent>
 385             <xs:extension base="GeometryFieldTypeWithoutSrc">
 386                 <xs:attribute name="field" type="nonEmptyStringType">
 387                     <xs:annotation>
 388                         <xs:documentation>Used if encoding = "WKT", "WKB" or "Shape" to find
 389                         the attribute field of the source layer.
 390                         Used also in multiple geometry fields scenario to retrieve the
 391                         source geometry field matching the target VRT geometry field.</xs:documentation>
 392                     </xs:annotation>
 393                 </xs:attribute>
 394             </xs:extension>
 395         </xs:complexContent>
 396     </xs:complexType>
 397
 398     <xs:complexType name="SrcRegionType">
 399         <xs:simpleContent>
 400             <xs:extension base="PolygonWKTType">
 401                 <xs:attribute name="clip" type="OGRBooleanType">
 402                     <xs:annotation>
 403                         <xs:documentation>Defaults to FALSE.</xs:documentation>
 404                     </xs:annotation>
 405                 </xs:attribute>
 406             </xs:extension>
 407         </xs:simpleContent>
 408     </xs:complexType>
 409
 410     <xs:simpleType name="PolygonWKTType">
 411         <xs:annotation>
 412             <xs:documentation>A valid WKT for a POLYGON</xs:documentation>
 413         </xs:annotation>
 414         <xs:restriction base="xs:string">
 415             <xs:pattern value="POLYGON.*"/>
 416         </xs:restriction>
 417     </xs:simpleType>
 418
 419     <xs:simpleType name="OGRBooleanType">
 420         <xs:restriction base="xs:string">
 421             <xs:enumeration value="1"/>
 422             <xs:enumeration value="0"/>
 423             <xs:enumeration value="ON"/>
 424             <xs:enumeration value="OFF"/>
 425             <xs:enumeration value="on"/>
 426             <xs:enumeration value="off"/>
 427             <xs:enumeration value="YES"/>
 428             <xs:enumeration value="NO"/>
 429             <xs:enumeration value="yes"/>
 430             <xs:enumeration value="no"/>
 431             <xs:enumeration value="TRUE"/>
 432             <xs:enumeration value="FALSE"/>
 433             <xs:enumeration value="true"/>
 434             <xs:enumeration value="false"/>
 435         </xs:restriction>
 436     </xs:simpleType>
 437
 438     <xs:complexType name="OGRVRTWarpedLayerType">
 439         <xs:sequence>
 440             <xs:choice minOccurs="1" maxOccurs="1">
 441                 <xs:element name="OGRVRTLayer" type="OGRVRTLayerType"/>
 442                 <xs:element name="OGRVRTWarpedLayer" type="OGRVRTWarpedLayerType"/>
 443                 <xs:element name="OGRVRTUnionLayer" type="OGRVRTUnionLayerType"/>
 444             </xs:choice>
 445             <xs:element name="WarpedGeomFieldName" type="nonEmptyStringType" minOccurs="0" maxOccurs="1"/>
 446             <xs:element name="SrcSRS" type="nonEmptyStringType" minOccurs="0" maxOccurs="1"/>
 447             <xs:element name="TargetSRS" type="nonEmptyStringType" minOccurs="1" maxOccurs="1"/>
 448             <xs:group ref="ExtentType" minOccurs="0" maxOccurs="1"/>
 449         </xs:sequence>
 450     </xs:complexType>
 451
 452     <xs:complexType name="OGRVRTUnionLayerType">
 453         <xs:sequence>
 454             <xs:choice minOccurs="0" maxOccurs="unbounded">
 455                 <xs:element name="OGRVRTLayer" type="OGRVRTLayerType">
 456                     <xs:annotation>
 457                         <xs:documentation>May be repeated</xs:documentation>
 458                     </xs:annotation>
 459                 </xs:element>
 460                 <xs:element name="OGRVRTWarpedLayer" type="OGRVRTWarpedLayerType">
 461                     <xs:annotation>
 462                         <xs:documentation>May be repeated</xs:documentation>
 463                     </xs:annotation>
 464                 </xs:element>
 465                 <xs:element name="OGRVRTUnionLayer" type="OGRVRTUnionLayerType">
 466                     <xs:annotation>
 467                         <xs:documentation>May be repeated</xs:documentation>
 468                     </xs:annotation>
 469                 </xs:element>
 470
 471                 <xs:element name="GeometryType" type="GeometryTypeType">
 472                     <xs:annotation>
 473                         <xs:documentation>Use GeometryField.GeometryType for multi-geometry field support.</xs:documentation>
 474                     </xs:annotation>
 475                 </xs:element>
 476                 <xs:element name="LayerSRS" type="nonEmptyStringType">
 477                     <xs:annotation>
 478                         <xs:documentation>Use GeometryField.SRS for multi-geometry field support.</xs:documentation>
 479                     </xs:annotation>
 480                 </xs:element>
 481                 <xs:element name="FieldStrategy" type="FieldStrategyType">
 482                     <xs:annotation>
 483                         <xs:documentation>Defaults to Union if no Field or GeometryField element is speicified.</xs:documentation>
 484                     </xs:annotation>
 485                 </xs:element>
 486                 <xs:element name="Field" type="FieldTypeWithoutSrc">
 487                     <xs:annotation>
 488                         <xs:documentation>May be repeated</xs:documentation>
 489                     </xs:annotation>
 490                 </xs:element>
 491                 <xs:element name="GeometryField" type="GeometryFieldTypeWithoutSrc">
 492                     <xs:annotation>
 493                         <xs:documentation>May be repeated</xs:documentation>
 494                     </xs:annotation>
 495                 </xs:element>
 496                 <xs:element name="PreserveSrcFID" type="OGRBooleanType">
 497                     <xs:annotation>
 498                         <xs:documentation>Defaults to FALSE.</xs:documentation>
 499                     </xs:annotation>
 500                 </xs:element>
 501                 <xs:element name="SourceLayerFieldName" type="nonEmptyStringType">
 502                     <xs:annotation>
 503                         <xs:documentation>Name of fields in which to place the name of the source layer of each feature.</xs:documentation>
 504                     </xs:annotation>
 505                 </xs:element>
 506                 <xs:element name="FeatureCount" type="xs:integer"/>
 507                 <xs:group ref="ExtentType">
 508                     <xs:annotation>
 509                         <xs:documentation>Use GeometryField.ExtentXMin, etc. for multi-geometry field support.</xs:documentation>
 510                     </xs:annotation>
 511                 </xs:group>
 512             </xs:choice>
 513         </xs:sequence>
 514         <xs:attribute name="name" type="nonEmptyStringType" use="required"/>
 515     </xs:complexType>
 516
 517     <xs:simpleType name="FieldStrategyType">
 518         <xs:restriction base="xs:string">
 519             <xs:enumeration value="FirstLayer"/>
 520             <xs:enumeration value="Union"/>
 521             <xs:enumeration value="Intersection"/>
 522         </xs:restriction>
 523     </xs:simpleType>
 524
 525 </xs:schema>