temporal.xsd

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<?xml version="1.0" encoding="UTF-8"?>
<schema targetNamespace="http://www.opengis.net/gml" xmlns:gml="http://www.opengis.net/gml" xmlns="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" version="3.1.1">
	<annotation>
		<appinfo source="urn:opengis:specification:gml:schema-xsd:temporal:3.1.1"/>
		<documentation xml:lang="en">The temporal schema for GML 3.1 provides constructs for handling time-varying spatial data. 
    This schema reflects a partial implementation of the model described in ISO 19108:2002. 
    Copyright (c) 2002-2005 OGC, All Rights Reserved.
	For conditions, see OGC Software Notice http://www.opengeospatial.org/about/?page=ipr</documentation>
	</annotation>
	<!-- ================================================================== -->
	<include schemaLocation="gmlBase.xsd"/>
	<!-- ================================================================== -->
	<!-- ==== Time Object ===== -->
	<!-- ================================================================== -->
	<element name="_TimeObject" type="gml:AbstractTimeObjectType" abstract="true" substitutionGroup="gml:_GML">
		<annotation>
			<documentation xml:lang="en">This abstract element acts as the head of the substitution group for temporal primitives and complexes.</documentation>
		</annotation>
	</element>
	<!-- ===================================== -->
	<complexType name="AbstractTimeObjectType" abstract="true">
		<annotation>
			<documentation xml:lang="en">The abstract supertype for temporal objects.</documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractGMLType"/>
		</complexContent>
	</complexType>
	<!-- ================================================================== -->
	<!-- ==== Time Primitive ===== -->
	<!-- ================================================================== -->
	<element name="_TimePrimitive" type="gml:AbstractTimePrimitiveType" abstract="true" substitutionGroup="gml:_TimeObject">
		<annotation>
			<documentation xml:lang="en">This abstract element acts as the head of the substitution group for temporal primitives.</documentation>
		</annotation>
	</element>
	<!-- ===================================== -->
	<complexType name="AbstractTimePrimitiveType" abstract="true">
		<annotation>
			<documentation xml:lang="en">The abstract supertype for temporal primitives.</documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractTimeObjectType">
				<sequence>
					<element name="relatedTime" type="gml:RelatedTimeType" minOccurs="0" maxOccurs="unbounded"/>
				</sequence>
			</extension>
		</complexContent>
	</complexType>
	<!-- ================================================================== -->
	<complexType name="TimePrimitivePropertyType">
		<sequence minOccurs="0">
			<element ref="gml:_TimePrimitive"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- ================================================================== -->
	<complexType name="RelatedTimeType">
		<complexContent>
			<extension base="gml:TimePrimitivePropertyType">
				<attribute name="relativePosition">
					<simpleType>
						<restriction base="string">
							<enumeration value="Before"/>
							<enumeration value="After"/>
							<enumeration value="Begins"/>
							<enumeration value="Ends"/>
							<enumeration value="During"/>
							<enumeration value="Equals"/>
							<enumeration value="Contains"/>
							<enumeration value="Overlaps"/>
							<enumeration value="Meets"/>
							<enumeration value="OverlappedBy"/>
							<enumeration value="MetBy"/>
							<enumeration value="BegunBy"/>
							<enumeration value="EndedBy"/>
						</restriction>
					</simpleType>
				</attribute>
			</extension>
		</complexContent>
	</complexType>
	<!-- ================================================================== -->
	<!-- ==== Time Complex ===== -->
	<!-- ================================================================== -->
	<element name="_TimeComplex" type="gml:AbstractTimeComplexType" abstract="true" substitutionGroup="gml:_TimeObject">
		<annotation>
			<documentation xml:lang="en">This abstract element acts as the head of the substitution group for temporal complexes. 
			Temporal complex is an aggregation of temporal primitives as its components, 
			represents a temporal geometric complex and a temporal topology complex. 
			N.B. Temporal geometric complex is not defined in this schema.</documentation>
		</annotation>
	</element>
	<!-- ================================================================== -->
	<complexType name="AbstractTimeComplexType" abstract="true">
		<annotation>
			<documentation xml:lang="en">The abstract supertype for temporal complexes.</documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractTimeObjectType"/>
		</complexContent>
	</complexType>
	<!-- ================================================================== -->
	<!-- ==== Time Geometric Primitive ===== -->
	<!-- ================================================================== -->
	<element name="_TimeGeometricPrimitive" type="gml:AbstractTimeGeometricPrimitiveType" abstract="true" substitutionGroup="gml:_TimePrimitive">
		<annotation>
			<documentation xml:lang="en">This abstract element acts as the head of the substitution group for temporal geometric primitives.</documentation>
		</annotation>
	</element>
	<!-- ===================================== -->
	<complexType name="AbstractTimeGeometricPrimitiveType" abstract="true">
		<annotation>
			<documentation xml:lang="en">The abstract supertype for temporal geometric primitives.
       A temporal geometry must be associated with a temporal reference system via URI. 
       The Gregorian calendar with UTC is the default reference system, following ISO 
       8601. Other reference systems in common use include the GPS calendar and the 
       Julian calendar.</documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractTimePrimitiveType">
				<attribute name="frame" type="anyURI" use="optional" default="#ISO-8601"/>
			</extension>
		</complexContent>
	</complexType>
	<!-- ================================================================== -->
	<complexType name="TimeGeometricPrimitivePropertyType">
		<sequence minOccurs="0">
			<element ref="gml:_TimeGeometricPrimitive"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- ================================================================== -->
	<!-- ==== Time Instant ===== -->
	<!-- ================================================================== -->
	<element name="TimeInstant" type="gml:TimeInstantType" substitutionGroup="gml:_TimeGeometricPrimitive"/>
	<!-- ===================================== -->
	<complexType name="TimeInstantType">
		<annotation>
			<documentation>Omit back-pointers begunBy, endedBy.</documentation>
		</annotation>
		<complexContent>
			<extension base="gml:AbstractTimeGeometricPrimitiveType">
				<sequence>
					<element ref="gml:timePosition"/>
				</sequence>
			</extension>
		</complexContent>
	</complexType>
	<!-- ================================================================== -->
	<complexType name="TimeInstantPropertyType">
		<sequence minOccurs="0">
			<element ref="gml:TimeInstant"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
	</complexType>
	<!-- ================================================================== -->
	<!-- ==== Time Period ===== -->
	<!-- ================================================================== -->
	<element name="TimePeriod" type="gml:TimePeriodType" substitutionGroup="gml:_TimeGeometricPrimitive"/>
	<!-- ===================================== -->
	<complexType name="TimePeriodType">
		<complexContent>
			<extension base="gml:AbstractTimeGeometricPrimitiveType">
				<sequence>