Metacat

<?xml version="1.0" encoding="UTF-8"?>

<schema targetNamespace="http://www.opengis.net/gml" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:gml="http://www.opengis.net/gml" xmlns:sch="http://www.ascc.net/xml/schematron" xmlns="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified"

        version="3.1.1.2">

	<annotation>

		<appinfo source="urn:opengis:specification:gml:schema-xsd:geometryComplexes:v3.1.1">geometryComplexes.xsd</appinfo>

		<documentation>

			GML is an OGC Standard.

			Copyright (c) 2001,2005,2010 Open Geospatial Consortium.

			To obtain additional rights of use, visit http://www.opengeospatial.org/legal/ .

		</documentation>

	</annotation>

	<include schemaLocation="gml.xsd"/>

	<include schemaLocation="geometryAggregates.xsd"/>

	<!-- =========================================================== -->

	<element name="CompositeCurve" type="gml:CompositeCurveType" substitutionGroup="gml:_Curve"/>

	<!-- =========================================================== -->

	<complexType name="CompositeCurveType">

		<annotation>

			<documentation>A CompositeCurve is defined by a sequence of (orientable) curves such that the each curve in the sequence terminates at the start point of the subsequent curve in the list.</documentation>

		</annotation>

		<complexContent>

			<extension base="gml:AbstractCurveType">

				<sequence>

					<element ref="gml:curveMember" maxOccurs="unbounded">

						<annotation>

							<documentation>This element references or contains one curve in the composite curve. The curves are contiguous, the collection of curves is ordered.

NOTE: This definition allows for a nested structure, i.e. a CompositeCurve may use, for example, another CompositeCurve as a curve member.</documentation>

						</annotation>

					</element>

				</sequence>

			</extension>

		</complexContent>

	</complexType>

	<!-- ============================================================== -->

	<complexType name="CompositeCurvePropertyType">

		<sequence minOccurs="0">

			<element ref="gml:CompositeCurve"/>

		</sequence>

		<attributeGroup ref="gml:AssociationAttributeGroup"/>

	</complexType>

	<!-- =========================================================== -->

	<element name="CompositeSurface" type="gml:CompositeSurfaceType" substitutionGroup="gml:_Surface"/>

	<!-- =========================================================== -->

	<complexType name="CompositeSurfaceType">

		<annotation>

			<documentation>A CompositeSurface is defined by a set of orientable surfaces. A composite surface is geometry type with all the geometric properties of a (primitive) surface. Essentially, a composite surface is a collection of surfaces that join in pairs on common boundary curves and which, when considered as a whole, form a single surface.</documentation>

		</annotation>

		<complexContent>

			<extension base="gml:AbstractSurfaceType">

				<sequence>

					<element ref="gml:surfaceMember" maxOccurs="unbounded">

						<annotation>

							<documentation>This element references or contains one surface in the composite surface. The surfaces are contiguous.

NOTE: This definition allows for a nested structure, i.e. a CompositeSurface may use, for example, another CompositeSurface as a member.</documentation>

						</annotation>

					</element>

				</sequence>

			</extension>

		</complexContent>

	</complexType>

	<!-- ============================================================== -->

	<complexType name="CompositeSurfacePropertyType">

		<sequence minOccurs="0">

			<element ref="gml:CompositeSurface"/>

		</sequence>

		<attributeGroup ref="gml:AssociationAttributeGroup"/>

	</complexType>

	<!-- =========================================================== -->

	<element name="CompositeSolid" type="gml:CompositeSolidType" substitutionGroup="gml:_Solid"/>

	<!-- =========================================================== -->

	<complexType name="CompositeSolidType">

		<annotation>

			<documentation>A composite solid is a geometry type with all the geometric properties of a (primitive) solid. 

				Essentially, a composite solid is a collection of solids that join in pairs on common boundary surfaces and which, when considered as a whole, form a single solid.</documentation>

		</annotation>

		<complexContent>

			<extension base="gml:AbstractSolidType">

				<sequence>

					<element ref="gml:solidMember" maxOccurs="unbounded">

						<annotation>

							<appinfo>

								<sch:pattern name="Check either href or content not both">

									<sch:rule context="gml:solidMember">

										<sch:extends rule="hrefOrContent"/>

									</sch:rule>

								</sch:pattern>

							</appinfo>

							<documentation>This element references or contains one solid in the composite solid. The solids are contiguous.

NOTE: This definition allows for a nested structure, i.e. a CompositeSolid may use, for example, another CompositeSolid as a member.</documentation>

						</annotation>

					</element>

				</sequence>

			</extension>

		</complexContent>

	</complexType>

	<!-- ============================================================== -->

	<complexType name="CompositeSolidPropertyType">

		<sequence minOccurs="0">

			<element ref="gml:CompositeSolid"/>

		</sequence>

		<attributeGroup ref="gml:AssociationAttributeGroup"/>

	</complexType>

	<!-- =========================================================== -->

	<!-- complex/composite geometry objects -->

	<!-- =========================================================== -->

	<element name="GeometricComplex" type="gml:GeometricComplexType" substitutionGroup="gml:_Geometry"/>

	<!-- =========================================================== -->

	<complexType name="GeometricComplexType">

		<annotation>

			<documentation>A geometric complex.</documentation>

		</annotation>

		<complexContent>

			<extension base="gml:AbstractGeometryType">

				<sequence>

					<element name="element" type="gml:GeometricPrimitivePropertyType" maxOccurs="unbounded"/>

				</sequence>

			</extension>

		</complexContent>

	</complexType>

	<!-- =========================================================== -->

	<complexType name="GeometricComplexPropertyType">

		<annotation>

			<documentation>A property that has a geometric complex as its value domain can either be an appropriate geometry element encapsulated in an element of this type or an XLink reference to a remote geometry element (where remote includes geometry elements located elsewhere in the same document). Either the reference or the contained element must be given, but neither both nor none.

NOTE: The allowed geometry elements contained in such a property (or referenced by it) have to be modelled by an XML Schema choice element since the composites inherit both from geometric complex *and* geometric primitive and are already part of the _GeometricPrimitive substitution group.</documentation>

		</annotation>

		<sequence minOccurs="0">

			<choice>

				<element ref="gml:GeometricComplex"/>

				<element ref="gml:CompositeCurve"/>

				<element ref="gml:CompositeSurface"/>

				<element ref="gml:CompositeSolid"/>

			</choice>

		</sequence>

		<attributeGroup ref="gml:AssociationAttributeGroup">

			<annotation>

				<documentation>This attribute group includes the XLink attributes (see xlinks.xsd). XLink is used in GML to reference remote resources (including those elsewhere in the same document). A simple link element can be constructed by including a specific set of XLink attributes. The XML Linking Language (XLink) is currently a Proposed Recommendation of the World Wide Web Consortium. XLink allows elements to be inserted into XML documents so as to create sophisticated links between resources; such links can be used to reference remote properties.

A simple link element can be used to implement pointer functionality, and this functionality has been built into various GML 3 elements by including the gml:AssociationAttributeGroup.</documentation>

			</annotation>

		</attributeGroup>

	</complexType>

	<!-- =========================================================== -->

</schema>