temporalTopology

Table of Contents

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Schema Document Properties

Target Namespacehttp://www.opengis.net/gml
Version3.2.0
Element and Attribute Namespaces
  • Global element and attribute declarations belong to this schema's target namespace.
  • By default, local element declarations belong to this schema's target namespace.
  • By default, local attribute declarations have no namespace.
Schema Composition
  • This schema includes components from the following schema document(s):
DocumentationSee 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.
Application DatatemporalTopology.xsd
More information at: urn:ogc:specification:gml:schema-xsd:temporalTopology:3.2.0.

Declared Namespaces

PrefixNamespace
Default namespacehttp://www.w3.org/2001/XMLSchema
xmlhttp://www.w3.org/XML/1998/namespace
gmlhttp://www.opengis.net/gml
Schema Component Representation
<schema targetNamespace="http://www.opengis.net/gml" elementFormDefault="qualified" version="3.2.0">
<include schemaLocation="temporal.xsd"/>
...
</schema>
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Global Declarations

Element: AbstractTimeTopologyPrimitive

NameAbstractTimeTopologyPrimitive
Typegml:AbstractTimeTopologyPrimitiveType
Nillableno
Abstractyes
Documentationgml: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.
XML Instance Representation
<gml:AbstractTimeTopologyPrimitive
gml:id="[1]">
<gml:metaDataProperty> ... </gml:metaDataProperty> [0..*]
<gml:description> ... </gml:description> [0..1]
<gml:descriptionReference> ... </gml:descriptionReference> [0..1]
<gml:identifier> ... </gml:identifier> [0..1]
<gml:name> ... </gml:name> [0..*]
<gml:relatedTime> gml:RelatedTimeType </gml:relatedTime> [0..*]
<gml:complex> gml:ReferenceType </gml:complex> [0..1]
</gml:AbstractTimeTopologyPrimitive>
Schema Component Representation
<element name="AbstractTimeTopologyPrimitive" type="gml:AbstractTimeTopologyPrimitiveType" abstract="true" substitutionGroup="gml:AbstractTimePrimitive"/>
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Element: TimeEdge

NameTimeEdge
Typegml:TimeEdgeType
Nillableno
Abstractno
DocumentationA time edge is a one-dimensional topological primitive. It is an open interval that starts and ends at a node. The edge may be realised as a geometry whose value is a time period.
XML Instance Representation
<gml:TimeEdge
gml:id="[1]">
<gml:metaDataProperty> ... </gml:metaDataProperty> [0..*]
<gml:description> ... </gml:description> [0..1]
<gml:descriptionReference> ... </gml:descriptionReference> [0..1]
<gml:identifier> ... </gml:identifier> [0..1]
<gml:name> ... </gml:name> [0..*]
<gml:relatedTime> gml:RelatedTimeType </gml:relatedTime> [0..*]
<gml:complex> gml:ReferenceType </gml:complex> [0..1]
<gml:start> gml:TimeNodePropertyType </gml:start> [1]
<gml:end> gml:TimeNodePropertyType </gml:end> [1]
<gml:extent> gml:TimePeriodPropertyType </gml:extent> [0..1]
</gml:TimeEdge>
Schema Component Representation
<element name="TimeEdge" type="gml:TimeEdgeType" substitutionGroup="gml:AbstractTimeTopologyPrimitive"/>
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Element: TimeNode

NameTimeNode
Typegml:TimeNodeType
Nillableno
Abstractno
DocumentationA time node is a zero-dimensional topological primitive that represents an identifiable node in time (it is equivalent to a point in space). A node may act as the termination or initiation of any number of time edges. A time node may be realised as a geometry, its position, whose value is a time instant.
XML Instance Representation
<gml:TimeNode
gml:id="[1]">
<gml:metaDataProperty> ... </gml:metaDataProperty> [0..*]
<gml:description> ... </gml:description> [0..1]
<gml:descriptionReference> ... </gml:descriptionReference> [0..1]
<gml:identifier> ... </gml:identifier> [0..1]
<gml:name> ... </gml:name> [0..*]
<gml:relatedTime> gml:RelatedTimeType </gml:relatedTime> [0..*]
<gml:complex> gml:ReferenceType </gml:complex> [0..1]
<gml:previousEdge> gml:TimeEdgePropertyType </gml:previousEdge> [0..*]
<gml:nextEdge> gml:TimeEdgePropertyType </gml:nextEdge> [0..*]
<gml:position> gml:TimeInstantPropertyType </gml:position> [0..1]
</gml:TimeNode>
Schema Component Representation
<element name="TimeNode" type="gml:TimeNodeType" substitutionGroup="gml:AbstractTimeTopologyPrimitive"/>
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Element: TimeTopologyComplex

NameTimeTopologyComplex
Typegml:TimeTopologyComplexType
Nillableno
Abstractno
DocumentationA 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 “substitution” of feature instances or feature element values. A time node as the start or the end of the graph connects with at least one time edge. A time node other than the start and the end shall connect to at least two time edges: one of starting from the node, and another ending at the node. A temporal topological complex is a set of connected temporal topological primitives. The member primtives are indicated, either by reference or by value, using the primitive property.
XML Instance Representation
<gml:TimeTopologyComplex
gml:id="[1]">
<gml:metaDataProperty> ... </gml:metaDataProperty> [0..*]
<gml:description> ... </gml:description> [0..1]
<gml:descriptionReference> ... </gml:descriptionReference> [0..1]
<gml:identifier> ... </gml:identifier> [0..1]
<gml:name> ... </gml:name> [0..*]
<gml:primitive> gml:TimeTopologyPrimitivePropertyType </gml:primitive> [1..*]
</gml:TimeTopologyComplex>
Schema Component Representation
<element name="TimeTopologyComplex" type="gml:TimeTopologyComplexType" substitutionGroup="gml:AbstractTimeComplex"/>
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Global Definitions

Complex Type: AbstractTimeTopologyPrimitiveType

Super-types:gml:AbstractTimePrimitiveType < AbstractTimeTopologyPrimitiveType (by extension)
Sub-types:
NameAbstractTimeTopologyPrimitiveType
Abstractyes
XML Instance Representation
<...
gml:id="[1]">
<gml:description> ... </gml:description> [0..1]
<gml:identifier> ... </gml:identifier> [0..1]
<gml:name> ... </gml:name> [0..*]
<gml:relatedTime> gml:RelatedTimeType </gml:relatedTime> [0..*]
<gml:complex> gml:ReferenceType </gml:complex> [0..1]
</...>
Schema Component Representation
<complexType name="AbstractTimeTopologyPrimitiveType" abstract="true">
<complexContent>
<extension base="gml:AbstractTimePrimitiveType">
<sequence>
<element name="complex" type="gml:ReferenceType" minOccurs="0"/>
</sequence>
</extension>
</complexContent>
</complexType>
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Complex Type: TimeEdgePropertyType

Super-types:None
Sub-types:None
NameTimeEdgePropertyType
Abstractno
Documentationgml:TimeEdgePropertyType provides for associating a gml:TimeEdge with an object.
XML Instance Representation
<...
xlink:type="simple [0..1]"
xlink:href="[0..1]"
xlink:role="[0..1]"
xlink:arcrole="[0..1]"
xlink:title="[0..1]"
xlink:show="[0..1]"
xlink:actuate="[0..1]"
nilReason="gml:NilReasonType [0..1]"
gml:remoteSchema="[0..1]"
owns="boolean [0..1]">
Start Sequence [0..1]
<gml:TimeEdge> ... </gml:TimeEdge> [1]
End Sequence
</...>
Schema Component Representation
<complexType name="TimeEdgePropertyType">
<sequence minOccurs="0">
<element ref="gml:TimeEdge"/>
</sequence>
<attributeGroup ref="gml:AssociationAttributeGroup"/>
<attributeGroup ref="gml:OwnershipAttributeGroup"/>
</complexType>
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Complex Type: TimeEdgeType

Super-types:gml:AbstractTimePrimitiveType < AbstractTimeTopologyPrimitiveType (by extension) < TimeEdgeType (by extension)
Sub-types:None
NameTimeEdgeType
Abstractno
XML Instance Representation
<...
gml:id="[1]">
<gml:description> ... </gml:description> [0..1]
<gml:identifier> ... </gml:identifier> [0..1]
<gml:name> ... </gml:name> [0..*]
<gml:relatedTime> gml:RelatedTimeType </gml:relatedTime> [0..*]
<gml:complex> gml:ReferenceType </gml:complex> [0..1]
<gml:start> gml:TimeNodePropertyType </gml:start> [1]
<gml:end> gml:TimeNodePropertyType </gml:end> [1]
<gml:extent> gml:TimePeriodPropertyType </gml:extent> [0..1]
</...>
Schema Component Representation
<complexType name="TimeEdgeType">
<complexContent>
<extension base="gml:AbstractTimeTopologyPrimitiveType">
<sequence>
<element name="start" type="gml:TimeNodePropertyType"/>
<element name="end" type="gml:TimeNodePropertyType"/>
<element name="extent" type="gml:TimePeriodPropertyType" minOccurs="0"/>
</sequence>
</extension>
</complexContent>
</complexType>
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Complex Type: TimeNodePropertyType

Super-types:None
Sub-types:None
NameTimeNodePropertyType
Abstractno
Documentationgml:TimeNodePropertyType provides for associating a gml:TimeNode with an object
XML Instance Representation
<...
xlink:type="simple [0..1]"
xlink:href="[0..1]"
xlink:role="[0..1]"
xlink:arcrole="[0..1]"
xlink:title="[0..1]"
xlink:show="[0..1]"
xlink:actuate="[0..1]"
nilReason="gml:NilReasonType [0..1]"
gml:remoteSchema="[0..1]"
owns="boolean [0..1]">
Start Sequence [0..1]
<gml:TimeNode> ... </gml:TimeNode> [1]
End Sequence
</...>
Schema Component Representation
<complexType name="TimeNodePropertyType">
<sequence minOccurs="0">
<element ref="gml:TimeNode"/>
</sequence>
<attributeGroup ref="gml:AssociationAttributeGroup"/>
<attributeGroup ref="gml:OwnershipAttributeGroup"/>
</complexType>
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Complex Type: TimeNodeType

Super-types:gml:AbstractTimePrimitiveType < AbstractTimeTopologyPrimitiveType (by extension) < TimeNodeType (by extension)
Sub-types:None
NameTimeNodeType
Abstractno
XML Instance Representation
<...
gml:id="[1]">
<gml:description> ... </gml:description> [0..1]
<gml:identifier> ... </gml:identifier> [0..1]
<gml:name> ... </gml:name> [0..*]
<gml:relatedTime> gml:RelatedTimeType </gml:relatedTime> [0..*]
<gml:complex> gml:ReferenceType </gml:complex> [0..1]
<gml:previousEdge> gml:TimeEdgePropertyType </gml:previousEdge> [0..*]
<gml:nextEdge> gml:TimeEdgePropertyType </gml:nextEdge> [0..*]
<gml:position> gml:TimeInstantPropertyType </gml:position> [0..1]
</...>
Schema Component Representation
<complexType name="TimeNodeType">
<complexContent>
<extension base="gml:AbstractTimeTopologyPrimitiveType">
<sequence>
<element name="previousEdge" type="gml:TimeEdgePropertyType" minOccurs="0" maxOccurs="unbounded"/>
<element name="nextEdge" type="gml:TimeEdgePropertyType" minOccurs="0" maxOccurs="unbounded"/>
<element name="position" type="gml:TimeInstantPropertyType" minOccurs="0"/>
</sequence>
</extension>
</complexContent>
</complexType>
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Complex Type: TimeTopologyComplexPropertyType

Super-types:None
Sub-types:None
NameTimeTopologyComplexPropertyType
Abstractno
Documentationgml:TimeTopologyComplexPropertyType provides for associating a gml:TimeTopologyComplex with an object.
XML Instance Representation
<...
xlink:type="simple [0..1]"
xlink:href="[0..1]"
xlink:role="[0..1]"
xlink:arcrole="[0..1]"
xlink:title="[0..1]"
xlink:show="[0..1]"
xlink:actuate="[0..1]"
nilReason="gml:NilReasonType [0..1]"
gml:remoteSchema="[0..1]"
owns="boolean [0..1]">
Start Sequence [0..1]
<gml:TimeTopologyComplex> ... </gml:TimeTopologyComplex> [1]
End Sequence
</...>
Schema Component Representation
<complexType name="TimeTopologyComplexPropertyType">
<sequence minOccurs="0">
<element ref="gml:TimeTopologyComplex"/>
</sequence>
<attributeGroup ref="gml:AssociationAttributeGroup"/>
<attributeGroup ref="gml:OwnershipAttributeGroup"/>
</complexType>
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Complex Type: TimeTopologyComplexType

Super-types:gml:AbstractTimeComplexType < TimeTopologyComplexType (by extension)
Sub-types:None
NameTimeTopologyComplexType
Abstractyes
XML Instance Representation
<...
gml:id="[1]">
<gml:description> ... </gml:description> [0..1]
<gml:identifier> ... </gml:identifier> [0..1]
<gml:name> ... </gml:name> [0..*]
<gml:primitive> gml:TimeTopologyPrimitivePropertyType </gml:primitive> [1..*]
</...>
Schema Component Representation
<complexType name="TimeTopologyComplexType" abstract="true">
<complexContent>
<extension base="gml:AbstractTimeComplexType">
<sequence>
<element name="primitive" type="gml:TimeTopologyPrimitivePropertyType" maxOccurs="unbounded"/>
</sequence>
</extension>
</complexContent>
</complexType>
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Complex Type: TimeTopologyPrimitivePropertyType

Super-types:None
Sub-types:None
NameTimeTopologyPrimitivePropertyType
Abstractno
Documentationgml:TimeTopologyPrimitivePropertyType provides for associating a gml:AbstractTimeTopologyPrimitive with an object.
XML Instance Representation
<...
xlink:type="simple [0..1]"
xlink:href="[0..1]"
xlink:role="[0..1]"
xlink:arcrole="[0..1]"
xlink:title="[0..1]"
xlink:show="[0..1]"
xlink:actuate="[0..1]"
nilReason="gml:NilReasonType [0..1]"
gml:remoteSchema="[0..1]"
owns="boolean [0..1]">
Start Sequence [0..1]
<gml:AbstractTimeTopologyPrimitive> ... </gml:AbstractTimeTopologyPrimitive> [1]
End Sequence
</...>
Schema Component Representation
<complexType name="TimeTopologyPrimitivePropertyType">
<sequence minOccurs="0">
<element ref="gml:AbstractTimeTopologyPrimitive"/>
</sequence>
<attributeGroup ref="gml:AssociationAttributeGroup"/>
<attributeGroup ref="gml:OwnershipAttributeGroup"/>
</complexType>
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Simple Type: SuccessionType

Super-types:string < SuccessionType (by restriction)
Sub-types:None
NameSuccessionType
Content
  • Base XSD Type: string
  • value comes from list: {'substitution'|'division'|'fusion'|'initiation'}
Application Datadeprecated
Schema Component Representation
<simpleType name="SuccessionType">
<restriction base="string">
<enumeration value="substitution"/>
<enumeration value="division"/>
<enumeration value="fusion"/>
<enumeration value="initiation"/>
</restriction>
</simpleType>
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Legend

Complex Type:

Schema Component Type

AusAddress

Schema Component Name
Super-types:Address < AusAddress (by extension)
Sub-types:
  • QLDAddress (by restriction)
If this schema component is a type definition, its type hierarchy is shown in a gray-bordered box.
NameAusAddress
Abstractno
The table above displays the properties of this schema component.
XML Instance Representation
<... country="Australia">
<unitNo> string </unitNo> [0..1]
<houseNo> string </houseNo> [1]
<street> string </street> [1]
Start Choice[1]
<city> string </city> [1]
<town> string </town> [1]
End Choice
<state> AusStates </state> [1]
<postcode> string <<pattern = [1-9][0-9]{3}>> </postcode> [1]?
</...>

The XML Instance Representation table above shows the schema component's content as an XML instance.

Schema Component Representation
<complexTypename="AusAddress">
<complexContent>
<extensionbase="Address">
<sequence>
<elementname="state" type="AusStates"/>
<elementname="postcode">
<simpleType>
<restrictionbase="string">
<patternvalue="[1-9][0-9]{3}"/>
</restriction>
</simpleType>
</element>
</sequence>
<attributename="country" type="string" fixed="Australia"/>
</extension>
</complexContent>
</complexType>
The Schema Component Representation table above displays the underlying XML representation of the schema component. (Annotations are not shown.)
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Glossary

Abstract (Applies to complex type definitions and element declarations). An abstract element or complex type cannot used to validate an element instance. If there is a reference to an abstract element, only element declarations that can substitute the abstract element can be used to validate the instance. For references to abstract type definitions, only derived types can be used.

All Model Group Child elements can be provided in any order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-all.

Choice Model Group Only one from the list of child elements and model groups can be provided in instances. See: http://www.w3.org/TR/xmlschema-1/#element-choice.

Collapse Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32). Then, collapse contiguous sequences of space characters into single space character, and remove leading and trailing space characters.

Disallowed Substitutions (Applies to element declarations). If substitution is specified, then substitution group members cannot be used in place of the given element declaration to validate element instances. If derivation methods, e.g. extension, restriction, are specified, then the given element declaration will not validate element instances that have types derived from the element declaration's type using the specified derivation methods. Normally, element instances can override their declaration's type by specifying an xsi:type attribute.

Key Constraint Like Uniqueness Constraint, but additionally requires that the specified value(s) must be provided. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Key Reference Constraint Ensures that the specified value(s) must match value(s) from a Key Constraint or Uniqueness Constraint. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

Model Group Groups together element content, specifying the order in which the element content can occur and the number of times the group of element content may be repeated. See: http://www.w3.org/TR/xmlschema-1/#Model_Groups.

Nillable (Applies to element declarations). If an element declaration is nillable, instances can use the xsi:nil attribute. The xsi:nil attribute is the boolean attribute, nil, from the http://www.w3.org/2001/XMLSchema-instance namespace. If an element instance has an xsi:nil attribute set to true, it can be left empty, even though its element declaration may have required content.

Notation A notation is used to identify the format of a piece of data. Values of elements and attributes that are of type, NOTATION, must come from the names of declared notations. See: http://www.w3.org/TR/xmlschema-1/#cNotation_Declarations.

Preserve Whitespace Policy Preserve whitespaces exactly as they appear in instances.

Prohibited Derivations (Applies to type definitions). Derivation methods that cannot be used to create sub-types from a given type definition.

Prohibited Substitutions (Applies to complex type definitions). Prevents sub-types that have been derived using the specified derivation methods from validating element instances in place of the given type definition.

Replace Whitespace Policy Replace tab, line feed, and carriage return characters with space character (Unicode character 32).

Sequence Model Group Child elements and model groups must be provided in the specified order in instances. See: http://www.w3.org/TR/xmlschema-1/#element-sequence.

Substitution Group Elements that are members of a substitution group can be used wherever the head element of the substitution group is referenced.

Substitution Group Exclusions (Applies to element declarations). Prohibits element declarations from nominating themselves as being able to substitute a given element declaration, if they have types that are derived from the original element's type using the specified derivation methods.

Target Namespace The target namespace identifies the namespace that components in this schema belongs to. If no target namespace is provided, then the schema components do not belong to any namespace.

Uniqueness Constraint Ensures uniqueness of an element/attribute value, or a combination of values, within a specified scope. See: http://www.w3.org/TR/xmlschema-1/#cIdentity-constraint_Definitions.

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