Copyright © 2012 Open Geospatial Consortium. 45
Table 30: default context for GetObservationById request parameters with pre-defined target property
Filter Property
Target property for PropertyIsEqualTo comparison operator
observation OM_Observation
NOTE: in an XML based SOS implementation the filter context can be defined via XPath expressions – see Table 48 in Subclause 13.1.
9.2.1.2 Response
The SOS
GetObservationByIdResponse
data type derives from the SWES
ExtensibleResponse
data type defined in OGC 09-001 and inherits its properties.
Requirement http:www.opengis.netspecSOS2.0reqgobifilter-context
Requirement 51 The default context for the ValueReferences used in the expression of a filter
operator see OGC 09-026r1ISO 19143 for further details for the GetObservationById request parameters that have a pre-defined target property shall be as defined in Table 30.
Requirement http:www.opengis.netspecSOS2.0reqobsByIdRetrievalresponse-structure
Requirement 52 In addition to the properties inherited from SWES
ExtensibleResponse
, the SOS
GetObservationByIdResponse
shall include the property according to Table 31.
Requirement http:www.opengis.netspecSOS2.0reqobsByIdRetrievalresponse-behavior
Requirement 53 The GetObservationById operation response shall contain OM observations that
have a
gml:identifier
value equal to one of the values of the
observation
parameter provided in the operation request.
Requirement http:www.opengis.netspecSOS2.0reqobsByIdRetrievalempty-response
Requirement 54 An instance of
GetObservationByIdResponse
type shall be empty if none of the observations associated with the SOS fulfill the GetObservationById parameter specified by the
client.
46 Copyright © 2012 Open Geospatial Consortium.
Table 31: Properties of GetObservationByIdResponse data type Name
Definition Data type and values
Multiplicity and use
observation OM Observation matching one of
the values of the observation request parameter specified by the client.
OM_Observation see [OGC 10-
004r3ISO 19156] Zero or many
optional
9.2.1.3 Exceptions
Listing 4: exception codes applicable to the GetObservationById operation
OperationNotSupported
MissingParameterValue
InvalidParameterValue
OptionNotSupported
NoApplicableCode
InvalidRequest
RequestExtensionNotSupported
9.2.1.4 Examples
Example 17 An example request of the XML implementation of the GetObservationById operation can be
found here: http:schemas.opengis.netsos2.0examplesenhancedOperationsGetObservationById.xml
Requirement http:www.opengis.netspecSOS2.0reqgobiexception
Requirement 55 When an SOS server encounters an error while performing a GetObservationById
operation, it shall return an exception message as specified in Clause 15 of [OGC 09-001] with applicable exception code as defined in Listing 4. The meaning of each exception code shall be as
defined in OGC 06-121r3 and OGC 09-001.
Copyright © 2012 Open Geospatial Consortium. 47
10 Transactional Extension
10.1 Requirements Class: InsertionCapabilities
