Open Geospatial Consortium
OGC Doc 09-066
CR-Form-v3
CHANGE REQUEST
FES 2.0 CR
09-066 rev-
Current version: 2.0 For
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Proposed change affects: AS Imp Spec X Best Practices Paper Other
Title: Extension of temporal operators to add AnyInteracts operator
Source: Snowflake Software, OWS6-AIM participants
Work item code: Date: 2009-03-09
Category: B
Use one of the following categories:
F (Critical correction)
A (corresponds to a correction in an earlier release)
B (Addition of feature),
C (Functional modification of feature)
D (Editorial modification)
Detailed explanations of the above categories can be found in the TC Policies and Procedures.
Reason for change: Feedback from OWS6-AIM on the use of FES2.0 temporal operators
Summary of change: In FES 2.0 there is currently no standard operator to support an ‘any interaction’ type query on a time period. The workaround is very verbose and requires 4 negated temporal operators:
NOT Before: (i.e. end time < start time) NOT Meets: (i.e. end time = start time) NOT After: (i.e. start time > end time) NOT MetBy: (i.e. start time = end time)
To shortcut the above query and to reduce complexity this CR proposes the creation of the following additional TemporalOperator:
<fes:TemporalOperator name="AnyInteracts"/>
Consequences if
not approved: Over verbose implementation and unnecessary complexity
Clauses affected: 7.9 Temporal Operators
Other specs X Other core specifications ISO19108 (see below) Affected: Abstract specifications
The OGC Technical Committee Policies & Procedures 05-020r3
Other comments: The temporal operators of FES2.0 are aligned to ISO19108, for consistency a change request to ISO19108 may need to be raised
Status Disposition
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