temporaltopology.xsd

由国外的一个著名的geonetwork修改而来

<?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="3.2.0">
	<annotation>
		<appinfo source="urn:ogc:specification:gml:schema-xsd:temporalTopology:3.2.0">temporalTopology.xsd</appinfo>
		<documentation>See ISO/DIS 19136 15.3.
Temporal topology is described in terms of time complexes, nodes, and edges, and the connectivity between these. Temporal topology does not directly provide information about temporal position. It is used in the case of describing a lineage or a history (e.g. a family tree expressing evolution of species, an ecological cycle, a lineage of lands or buildings, or a history of separation and merger of administrative boundaries). The following Subclauses specifies the temporal topology as temporal characteristics of features in compliance with ISO 19108.</documentation>
	</annotation>
	<include schemaLocation="temporal.xsd"/>
	<element name="AbstractTimeTopologyPrimitive" type="gml:AbstractTimeTopologyPrimitiveType" abstract="true" substitutionGroup="gml:AbstractTimePrimitive">
		<annotation>
			<documentation>gml:TimeTopologyPrimitive acts as the head of a substitution group for topological temporal primitives.
Temporal topology primitives shall imply the ordering information between features or feature properties. The temporal connection of features can be examined if they have temporal topology primitives as values of their properties. Usually, an instantaneous feature associates with a time node, and a static feature associates with a time edge.  A feature with both modes associates with the temporal topology primitive: a supertype of time nodes and time edges.
A topological primitive is always connected to one or more other topological primitives, and is, therefore, always a member of a topological complex. In a GML instance, this will often be indicated by the primitives being described by elements that are descendents of an element describing a complex. However, in order to support the case where a temporal topological primitive is described in another context, the optional complex property is provided, which carries a reference to the parent temporal topological complex.</documentation>
		</annotation>
	</element>
	<complexType name="AbstractTimeTopologyPrimitiveType" abstract="true">
		<complexContent>
			<extension base="gml:AbstractTimePrimitiveType">
				<sequence>
					<element name="complex" type="gml:ReferenceType" minOccurs="0"/>
				</sequence>
			</extension>
		</complexContent>
	</complexType>
	<complexType name="TimeTopologyPrimitivePropertyType">
		<annotation>
			<documentation>gml:TimeTopologyPrimitivePropertyType provides for associating a gml:AbstractTimeTopologyPrimitive with an object.</documentation>
		</annotation>
		<sequence minOccurs="0">
			<element ref="gml:AbstractTimeTopologyPrimitive"/>
		</sequence>
		<attributeGroup ref="gml:AssociationAttributeGroup"/>
		<attributeGroup ref="gml:OwnershipAttributeGroup"/>
	</complexType>
	<element name="TimeTopologyComplex" type="gml:TimeTopologyComplexType" substitutionGroup="gml:AbstractTimeComplex">
		<annotation>
			<documentation>A temporal topology complex shall be the connected acyclic directed graph composed of temporal topological primitives, i.e. time nodes and time edges. Because a time edge may not exist without two time nodes on its boundaries, static features have time edges from a temporal topology complex as the values of their temporal properties, regardless of explicit declarations.
A temporal topology complex expresses a linear or a non-linear graph. A temporal linear graph, composed of a sequence of time edges, provides a lineage described only by 鈥渟ubstitution鈥