13.2 DescribeTasking operation request
13.2.1 DescribeTasking request parameters
This table also specifies the UML model data type, source of values, and multiplicity of each listed parameter, plus the meaning to servers when each optional parameter is not
included in the operation request.
Table 8: Parameters in DescribeTasking operation request
Name
a
Definition Data type and values
Multiplicity and use
service Service type identifier
Character String type, not empty fixed: Value is OWS type
abbreviation: SPS One mandatory
request Operation name
Character String type, not empty Value is operation name:
DescribeTasking One mandatory
version Specification version for
operation Character String type, not empty
Value is specified by each Implementation Specification and
Schemas version One mandatory
sensorID Defines sensor to be
described xs:token type
One to many mandatory
a The name capitalization rules being used here are specified in Subclause 11.6.2 of [OGC 05-008].
NOTE 2 The data type of many parameters is specified as “Character String type, not empty”. In the
XML Schema Documents specified herein, these parameters are encoded with the xsd:string type, which does NOT require that these strings not be empty.
The “Multiplicity and use” columns in Table 7 through all tables specify the optionality of each listed parameter and data structure in the DescribeTasking operation request.
Since all parameters and data structures are mandatory in the operation request, all parameters and data structures shall be implemented by all SPS clients, using a specified
values. Similarly, all parameters and data structures shall be implemented by all SPS servers, checking that each request parameter is received with any specified values.
13.2.2 DescribeTasking request KVP encoding
KVP encoding not supported
13.2.3 DescribeTasking request XML encoding
All SPS servers shall implement HTTP POST transfer of the DescribeTasking operation request, using XML encoding only. The following figure and schema fragment specifies
the contents and structure of a DescribeTasking operation request encoded in XML.
Copyright © 2007 Open Geospatial Consortium, Inc. All Rights Reserved.
55
SPSOperation
«Element»
DescribeTasking
+ «Attribute» request: string + «Attribute» version: string
+ «Attribute» service: string = SPS
+ «Element» sensorID: token [1..]
Figure 23: DescribeTasking in UML notation
Figure 24: DescribeTakingRequest in XMLSpy notation
EXAMPLE An example DescribeTasking operation request XML encoded for HTTP POST is:
?xml version=1.0 encoding=UTF-8? DescribeTasking
xmlns =
http:www.opengis.netsps service
= SPS
version =
1.0.0 sensorID
urn:x-ogc:object:sensor:IFGI:AXISPTZ_C:1:ifgicam01 sensorI
D DescribeTasking
13.3 DescribeTasking operation response
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