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ogrvrt.xsd
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ogrvrt.xsd
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<?xml version="1.0" encoding="UTF-8"?>
<!--
/******************************************************************************
* $Id$
*
* Project: GDAL/OGR
* Purpose: XML Schema for OGR VRT files.
* Author: Even Rouault, <even dot rouault at spatialys.com>
*
**********************************************************************
* Copyright (c) 2012, Even Rouault
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
****************************************************************************/
-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" version="1.0">
<xs:element name="OGRVRTDataSource">
<xs:complexType>
<xs:sequence>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="Metadata" type="MetadataType"/> <!-- may be repeated -->
<xs:element name="OGRVRTLayer" type="OGRVRTLayerType"/>
<xs:element name="OGRVRTWarpedLayer" type="OGRVRTWarpedLayerType"/>
<xs:element name="OGRVRTUnionLayer" type="OGRVRTUnionLayerType"/>
</xs:choice>
</xs:sequence>
</xs:complexType>
</xs:element>
<xs:complexType name="MetadataType">
<xs:sequence>
<!--<xs:choice>-->
<!--<xs:element name="MDI" type="MDIType" minOccurs="0" maxOccurs="unbounded"/>-->
<xs:any processContents="skip" minOccurs="0" maxOccurs="unbounded"/>
<!--</xs:choice>-->
</xs:sequence>
<xs:attribute name="domain" type="xs:string"/>
<xs:attribute name="format" type="xs:string"/>
</xs:complexType>
<xs:complexType name="OGRVRTLayerType">
<xs:sequence>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="Metadata" type="MetadataType"/> <!-- may be repeated -->
<xs:element name="SrcDataSource" type="SrcDataSourceType">
<xs:annotation>
<xs:documentation>Required element</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="OpenOptions" type="OpenOptionsType">
<xs:annotation>
<xs:documentation>Optional element</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="SrcLayer" type="nonEmptyStringType">
<xs:annotation>
<xs:documentation>SrcLayer or(eclusive) SrcSQL are required elements</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="SrcSQL">
<xs:complexType>
<xs:simpleContent>
<xs:extension base="nonEmptyStringType">
<xs:attribute name="dialect" type="nonEmptyStringType"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
</xs:element>
<xs:element name="FID" type="FIDType"/>
<xs:element name="Style" type="nonEmptyStringType"/>
<xs:element name="GeometryType" type="GeometryTypeType">
<xs:annotation>
<xs:documentation>Use GeometryField.GeometryType for multi-geometry field support.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="LayerSRS" type="nonEmptyStringType">
<xs:annotation>
<xs:documentation>Use GeometryField.SRS for multi-geometry field support.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="Field" type="FieldType">
<xs:annotation>
<xs:documentation>May be repeated</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="GeometryField" type="GeometryFieldType">
<xs:annotation>
<xs:documentation>May be repeated</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="SrcRegion" type="SrcRegionType">
<xs:annotation>
<xs:documentation>Use GeometryField.SrcRegion for multi-geometry field support.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="attrFilterPassThrough" type="OGRBooleanType">
<xs:annotation>
<xs:documentation>Default to FALSE.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="FeatureCount" type="xs:integer"/>
<xs:group ref="ExtentType">
<xs:annotation>
<xs:documentation>Use GeometryField.ExtentXMin, etc... for multi-geometry field support.</xs:documentation>
</xs:annotation>
</xs:group>
</xs:choice>
</xs:sequence>
<xs:attribute name="name" type="nonEmptyStringType" use="required"/>
</xs:complexType>
<xs:complexType name="OpenOptionsType">
<xs:sequence>
<xs:element name="OOI" type="OOIType" minOccurs="0" maxOccurs="unbounded"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="OOIType">
<xs:simpleContent>
<xs:extension base="nonEmptyStringType">
<xs:attribute name="key" type="xs:string"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:complexType name="FIDType">
<xs:simpleContent>
<xs:extension base="xs:string">
<xs:attribute name="name" type="xs:string">
<xs:annotation>
<xs:documentation>User-facing name of the FID column.</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:group name="ExtentType">
<xs:sequence>
<xs:element name="ExtentXMin" type="xs:double" minOccurs="1" maxOccurs="1"/>
<xs:element name="ExtentYMin" type="xs:double" minOccurs="1" maxOccurs="1"/>
<xs:element name="ExtentXMax" type="xs:double" minOccurs="1" maxOccurs="1"/>
<xs:element name="ExtentYMax" type="xs:double" minOccurs="1" maxOccurs="1"/>
</xs:sequence>
</xs:group>
<xs:complexType name="SrcDataSourceType">
<xs:simpleContent>
<xs:extension base="nonEmptyStringType">
<xs:attribute name="relativeToVRT" type="OGRBooleanType" default="FALSE">
<xs:annotation>
<xs:documentation>Default to FALSE.</xs:documentation>
</xs:annotation>
</xs:attribute>
<!-- alternate case -->
<xs:attribute name="relativetoVRT" type="OGRBooleanType" default="FALSE">
<xs:annotation>
<xs:documentation>Default to FALSE.</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="shared" type="OGRBooleanType"/>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:simpleType name="nonEmptyStringType">
<xs:restriction base="xs:string">
<xs:minLength value="1"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="GeometryTypeType">
<xs:restriction base="xs:string">
<xs:enumeration value="wkbNone"/>
<xs:enumeration value="wkbUnknown"/>
<xs:enumeration value="wkbPoint"/>
<xs:enumeration value="wkbLineString"/>
<xs:enumeration value="wkbPolygon"/>
<xs:enumeration value="wkbMultiPoint"/>
<xs:enumeration value="wkbMultiLineString"/>
<xs:enumeration value="wkbMultiPolygon"/>
<xs:enumeration value="wkbGeometryCollection"/>
<xs:enumeration value="wkbCircularString"/> <!-- new in GDAL 2.0 -->
<xs:enumeration value="wkbCompoundCurve"/> <!-- new in GDAL 2.0 -->
<xs:enumeration value="wkbCurvePolygon"/> <!-- new in GDAL 2.0 -->
<xs:enumeration value="wkbMultiCurve"/> <!-- new in GDAL 2.0 -->
<xs:enumeration value="wkbMultiSurface"/> <!-- new in GDAL 2.0 -->
<xs:enumeration value="wkbCurve"/> <!-- new in GDAL 2.1 -->
<xs:enumeration value="wkbSurface"/> <!-- new in GDAL 2.1 -->
<xs:enumeration value="wkbUnknown25D"/>
<xs:enumeration value="wkbPoint25D"/>
<xs:enumeration value="wkbLineString25D"/>
<xs:enumeration value="wkbPolygon25D"/>
<xs:enumeration value="wkbMultiPoint25D"/>
<xs:enumeration value="wkbMultiLineString25D"/>
<xs:enumeration value="wkbMultiPolygon25D"/>
<xs:enumeration value="wkbGeometryCollection25D"/>
<xs:enumeration value="wkbCircularStringZ"/> <!-- new in GDAL 2.0 -->
<xs:enumeration value="wkbCompoundCurveZ"/> <!-- new in GDAL 2.0 -->
<xs:enumeration value="wkbCurvePolygonZ"/> <!-- new in GDAL 2.0 -->
<xs:enumeration value="wkbMultiCurveZ"/> <!-- new in GDAL 2.0 -->
<xs:enumeration value="wkbMultiSurfaceZ"/> <!-- new in GDAL 2.0 -->
<xs:enumeration value="wkbCurveZ"/> <!-- new in GDAL 2.1 -->
<xs:enumeration value="wkbSurfaceZ"/> <!-- new in GDAL 2.1 -->
<!-- below is new in GDAL 2.1 -->
<xs:enumeration value="wkbPointM"/>
<xs:enumeration value="wkbLineStringM"/>
<xs:enumeration value="wkbPolygonM"/>
<xs:enumeration value="wkbMultiPointM"/>
<xs:enumeration value="wkbMultiLineStringM"/>
<xs:enumeration value="wkbMultiPolygonM"/>
<xs:enumeration value="wkbGeometryCollectionM"/>
<xs:enumeration value="wkbCircularStringM"/>
<xs:enumeration value="wkbCompoundCurveM"/>
<xs:enumeration value="wkbCurvePolygonM"/>
<xs:enumeration value="wkbMultiCurveM"/>
<xs:enumeration value="wkbMultiSurfaceM"/>
<xs:enumeration value="wkbCurveM"/>
<xs:enumeration value="wkbSurfaceM"/>
<xs:enumeration value="wkbPointZM"/>
<xs:enumeration value="wkbLineStringZM"/>
<xs:enumeration value="wkbPolygonZM"/>
<xs:enumeration value="wkbMultiPointZM"/>
<xs:enumeration value="wkbMultiLineStringZM"/>
<xs:enumeration value="wkbMultiPolygonZM"/>
<xs:enumeration value="wkbGeometryCollectionZM"/>
<xs:enumeration value="wkbCircularStringZM"/>
<xs:enumeration value="wkbCompoundCurveZM"/>
<xs:enumeration value="wkbCurvePolygonZM"/>
<xs:enumeration value="wkbMultiCurveZM"/>
<xs:enumeration value="wkbMultiSurfaceZM"/>
<xs:enumeration value="wkbCurveZM"/>
<xs:enumeration value="wkbSurfaceZM"/>
<!-- below is new in GDAL 2.2 -->
<xs:enumeration value="wkbPolyhedralSurface"/>
<xs:enumeration value="wkbTIN"/>
<xs:enumeration value="wkbTriangle"/>
<xs:enumeration value="wkbPolyhedralSurfaceZ"/>
<xs:enumeration value="wkbTINZ"/>
<xs:enumeration value="wkbTriangleZ"/>
<xs:enumeration value="wkbPolyhedralSurfaceM"/>
<xs:enumeration value="wkbTINM"/>
<xs:enumeration value="wkbTriangleM"/>
<xs:enumeration value="wkbPolyhedralSurfaceZM"/>
<xs:enumeration value="wkbTINZM"/>
<xs:enumeration value="wkbTriangleZM"/>
</xs:restriction>
</xs:simpleType>
<xs:complexType name="FieldTypeWithoutSrc">
<xs:attribute name="name" type="nonEmptyStringType" use="required"/>
<xs:attribute name="type" type="OGRFieldTypeType" default="String"/>
<xs:attribute name="subtype" type="OGRFieldSubTypeType" default="None"/> <!-- new in GDAL 2.0 -->
<xs:attribute name="width" type="xs:nonNegativeInteger"/>
<xs:attribute name="precision" type="xs:nonNegativeInteger"/>
<xs:attribute name="nullable" type="OGRBooleanType" default="true"/> <!-- new in GDAL 2.0 -->
<xs:attribute name="default" type="xs:string"/> <!-- new in GDAL 2.0 -->
<xs:attribute name="unique" type="OGRBooleanType" default="false"/> <!-- new in GDAL 3.2 -->
</xs:complexType>
<xs:complexType name="FieldType">
<xs:complexContent>
<xs:extension base="FieldTypeWithoutSrc">
<xs:attribute name="src" type="nonEmptyStringType">
<xs:annotation>
<xs:documentation>Defaults to the value of "name" if not specified.</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:simpleType name="OGRFieldTypeType">
<xs:restriction base="xs:string">
<xs:enumeration value="Integer"/>
<xs:enumeration value="integer"/>
<xs:enumeration value="Integer64"/>
<xs:enumeration value="integer64"/>
<xs:enumeration value="Real"/>
<xs:enumeration value="real"/>
<xs:enumeration value="String"/>
<xs:enumeration value="string"/>
<xs:enumeration value="IntegerList"/>
<xs:enumeration value="integerlist"/>
<xs:enumeration value="Integer64List"/>
<xs:enumeration value="integer64list"/>
<xs:enumeration value="RealList"/>
<xs:enumeration value="reallist"/>
<xs:enumeration value="StringList"/>
<xs:enumeration value="stringlist"/>
<xs:enumeration value="Binary"/>
<xs:enumeration value="binary"/>
<xs:enumeration value="Date"/>
<xs:enumeration value="date"/>
<xs:enumeration value="Time"/>
<xs:enumeration value="time"/>
<xs:enumeration value="DateTime"/>
<xs:enumeration value="datetime"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="OGRFieldSubTypeType">
<xs:restriction base="xs:string">
<xs:enumeration value="None"/>
<xs:enumeration value="Boolean"/>
<xs:enumeration value="Int16"/>
<xs:enumeration value="Float32"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="EncodingType">
<xs:restriction base="xs:string">
<xs:enumeration value="Direct"/>
<xs:enumeration value="None"/>
<xs:enumeration value="WKT"/>
<xs:enumeration value="WKB"/>
<xs:enumeration value="Shape"/>
<xs:enumeration value="shape"/>
<xs:enumeration value="PointFromColumns"/>
</xs:restriction>
</xs:simpleType>
<xs:attributeGroup name="GeometryFieldTypeAttrGroupWithoutSrc">
<xs:attribute name="encoding" type="EncodingType">
<xs:annotation>
<xs:documentation>Defaults to Direct.</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="name" type="xs:string">
<xs:annotation>
<xs:documentation>Name of the geometry field</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="x" type="nonEmptyStringType">
<xs:annotation>
<xs:documentation>Only used if encoding = "PointFromColumns"</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="y" type="nonEmptyStringType">
<xs:annotation>
<xs:documentation>Only used if encoding = "PointFromColumns"</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="z" type="nonEmptyStringType">
<xs:annotation>
<xs:documentation>Only used if encoding = "PointFromColumns"</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="m" type="nonEmptyStringType">
<xs:annotation>
<xs:documentation>Only used if encoding = "PointFromColumns"</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="useSpatialSubquery" type="OGRBooleanType">
<xs:annotation>
<xs:documentation>Only used if encoding = "PointFromColumns". Defaults to TRUE.</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="reportSrcColumn" type="OGRBooleanType">
<xs:annotation>
<xs:documentation>Only used if no Field element is found at the OGRVRTLayer level</xs:documentation>
</xs:annotation>
</xs:attribute>
<xs:attribute name="nullable" type="OGRBooleanType" default="true"/> <!-- new in GDAL 2.0 -->
</xs:attributeGroup>
<xs:complexType name="GeometryFieldTypeWithoutSrc">
<xs:sequence>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="GeometryType" type="GeometryTypeType"/>
<xs:element name="SrcRegion" type="SrcRegionType"/>
<xs:element name="SRS" type="nonEmptyStringType"/>
<xs:group ref="ExtentType"/>
</xs:choice>
</xs:sequence>
<xs:attributeGroup ref="GeometryFieldTypeAttrGroupWithoutSrc"/>
</xs:complexType>
<xs:complexType name="GeometryFieldType">
<xs:complexContent>
<xs:extension base="GeometryFieldTypeWithoutSrc">
<xs:attribute name="field" type="nonEmptyStringType">
<xs:annotation>
<xs:documentation>Used if encoding = "WKT", "WKB" or "Shape" to find
the attribute field of the source layer.
Used also in multiple geometry fields scenario to retrieve the
source geometry field matching the target VRT geometry field.</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:complexContent>
</xs:complexType>
<xs:complexType name="SrcRegionType">
<xs:simpleContent>
<xs:extension base="PolygonWKTType">
<xs:attribute name="clip" type="OGRBooleanType">
<xs:annotation>
<xs:documentation>Defaults to FALSE.</xs:documentation>
</xs:annotation>
</xs:attribute>
</xs:extension>
</xs:simpleContent>
</xs:complexType>
<xs:simpleType name="PolygonWKTType">
<xs:annotation>
<xs:documentation>A valid WKT for a POLYGON</xs:documentation>
</xs:annotation>
<xs:restriction base="xs:string">
<xs:pattern value="POLYGON.*"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="OGRBooleanType">
<xs:restriction base="xs:string">
<xs:enumeration value="1"/>
<xs:enumeration value="0"/>
<xs:enumeration value="ON"/>
<xs:enumeration value="OFF"/>
<xs:enumeration value="on"/>
<xs:enumeration value="off"/>
<xs:enumeration value="YES"/>
<xs:enumeration value="NO"/>
<xs:enumeration value="yes"/>
<xs:enumeration value="no"/>
<xs:enumeration value="TRUE"/>
<xs:enumeration value="FALSE"/>
<xs:enumeration value="true"/>
<xs:enumeration value="false"/>
</xs:restriction>
</xs:simpleType>
<xs:complexType name="OGRVRTWarpedLayerType">
<xs:sequence>
<xs:choice minOccurs="1" maxOccurs="1">
<xs:element name="OGRVRTLayer" type="OGRVRTLayerType"/>
<xs:element name="OGRVRTWarpedLayer" type="OGRVRTWarpedLayerType"/>
<xs:element name="OGRVRTUnionLayer" type="OGRVRTUnionLayerType"/>
</xs:choice>
<xs:element name="WarpedGeomFieldName" type="nonEmptyStringType" minOccurs="0" maxOccurs="1"/>
<xs:element name="SrcSRS" type="nonEmptyStringType" minOccurs="0" maxOccurs="1"/>
<xs:element name="TargetSRS" type="nonEmptyStringType" minOccurs="1" maxOccurs="1"/>
<xs:group ref="ExtentType" minOccurs="0" maxOccurs="1"/>
</xs:sequence>
</xs:complexType>
<xs:complexType name="OGRVRTUnionLayerType">
<xs:sequence>
<xs:choice minOccurs="0" maxOccurs="unbounded">
<xs:element name="OGRVRTLayer" type="OGRVRTLayerType">
<xs:annotation>
<xs:documentation>May be repeated</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="OGRVRTWarpedLayer" type="OGRVRTWarpedLayerType">
<xs:annotation>
<xs:documentation>May be repeated</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="OGRVRTUnionLayer" type="OGRVRTUnionLayerType">
<xs:annotation>
<xs:documentation>May be repeated</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="GeometryType" type="GeometryTypeType">
<xs:annotation>
<xs:documentation>Use GeometryField.GeometryType for multi-geometry field support.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="LayerSRS" type="nonEmptyStringType">
<xs:annotation>
<xs:documentation>Use GeometryField.SRS for multi-geometry field support.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="FieldStrategy" type="FieldStrategyType">
<xs:annotation>
<xs:documentation>Defaults to Union if no Field or GeometryField element is specified.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="Field" type="FieldTypeWithoutSrc">
<xs:annotation>
<xs:documentation>May be repeated</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="GeometryField" type="GeometryFieldTypeWithoutSrc">
<xs:annotation>
<xs:documentation>May be repeated</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="PreserveSrcFID" type="OGRBooleanType">
<xs:annotation>
<xs:documentation>Defaults to FALSE.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="SourceLayerFieldName" type="nonEmptyStringType">
<xs:annotation>
<xs:documentation>Name of fields in which to place the name of the source layer of each feature.</xs:documentation>
</xs:annotation>
</xs:element>
<xs:element name="FeatureCount" type="xs:integer"/>
<xs:group ref="ExtentType">
<xs:annotation>
<xs:documentation>Use GeometryField.ExtentXMin, etc. for multi-geometry field support.</xs:documentation>
</xs:annotation>
</xs:group>
</xs:choice>
</xs:sequence>
<xs:attribute name="name" type="nonEmptyStringType" use="required"/>
</xs:complexType>
<xs:simpleType name="FieldStrategyType">
<xs:restriction base="xs:string">
<xs:enumeration value="FirstLayer"/>
<xs:enumeration value="Union"/>
<xs:enumeration value="Intersection"/>
</xs:restriction>
</xs:simpleType>
</xs:schema>