OGC 08-094r1 SWE Common Data Model
swe:label Motion Detected
swe:label swe:description
True when motion was detected in the room swe:description
swe:value true
swe:value swe:Boolean
Without the value it can serve as data descriptor for values that are encoded separately. The following example shows how it is used in SPS to define a Boolean tasking
parameter. It is used as the definition of the input parameter, and so does not contain the value:
swe:Boolean definition
= http:mmisw.orgontq2otesttimeContinuityTest
swe:label Time Continuity Test
swe:label swe:description
Set to true to enable time continuity test swe:description
swe:Boolean
8.1.4 Text Element
The “Text” element is the XML schema implementation of the “Text” UML class defined in clause 7.2.5. The schema snippet for this element and its corresponding complex type
is shown below:
element name
= Text
substitutionGroup =
swe:AbstractSimpleComponent type
= swe:TextType
complexType name
= TextType
complexContent extension
base =
swe:AbstractSimpleComponentType sequence
element name
= constraint
maxOccurs =
1 minOccurs
= type
= swe:AllowedTokensPropertyType
element name
= value
maxOccurs =
1 minOccurs
= type
= string
sequence extension
complexContent complexType
Constraints can be expressed by using the “AllowedTokens” element detailed in clause 8.1.15. The “value” property element is of the XML schema type “string” and it can
contain XML entities if special characters i.e. not allowed in XML are required.
The following instance shows how this element can be used to describe a “plate number”:
swe:Text definition
= http:mmisw.orgontmmideviceManufacturer
swe:label Manufacturer
swe:label swe:value
Ocean Devices, Inc. swe:value
swe:Text
The plate number value that would be present in the corresponding data file or stream would then have to include a value that matches the pattern such as “5491 AB 31”.
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Copyright © 2011 Open Geospatial Consortium
SWE Common Data Model OGC 08-094r1
8.1.5 Category Element
The “Category” element is the XML schema implementation of the “Category” UML class defined in clause 7.2.6. The schema snippet for this element and its corresponding
complex type is shown below:
element name
= Category
substitutionGroup =
swe:AbstractSimpleComponent type
= swe:CategoryType
complexType name
= CategoryType
complexContent extension
base =
swe:AbstractSimpleComponentType sequence
element name
= codeSpace
maxOccurs =
1 minOccurs
= type
= swe:Reference
element name
= constraint
maxOccurs =
1 minOccurs
= type
= swe:AllowedTokensPropertyType
element name
= value
maxOccurs =
1 minOccurs
= type
= string
sequence extension
complexContent complexType
The “codeSpace” element is of type “swe:Reference” and thus makes use of an “xlink:href” XML attribute to reference an external dictionary, taxonomy or ontology
representing the code space Please refer to the documentation of the “xlink:simpleLink” attribute group for more details. Constraints can be expressed by using the
“AllowedTokens” element detailed in clause 8.1.15. The “value” property element is of the XML schema type “string”. The text content of this element should however be
limited to short tokens in the case of a categorical representation.
The following example shows how the “codeSpace” element can be used to give the value of a geological period:
swe:Category definition
= http:sweet.jpl.nasa.gov2.0timeGeologic.owlGeologicTime
swe:label Geological Period
swe:label swe:description
Name of the geological period according to the nomenclature of the International Commission on Stratigraphy
swe:description swe:codeSpace
xlink:href =
http:sweet.jpl.nasa.gov2.0timeGeologic.owlPeriod swe:value
Jurassic swe:value
swe:Category
Note that the code space references an existing dictionary defined by CGI Commission for the Management and Application of Geoscience Information. This shows how SWE
Common can leverage an existing community managed terminology. Alternatively it can be used without the value to describe, for instance, a “bird species” field in a biology
dataset:
swe:Category definition
= http:sweet.jpl.nasa.gov2.0biol.owlSpecies
swe:label Bird Species
swe:label swe:description
Bird species according to the classification of the World Bird Database swe:description
swe:codeSpace xlink:href
= http:www.birdlife.orgdatazonespeciesindex.html
swe:Category
Copyright © 2011 Open Geospatial Consortium
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