Schedule Exception

• CURIE: gmeow:ScheduleException
• IRI: https://blackcatinformatics.ca/gmeow/ScheduleException
• Category: class
• Defined by: gmeow:slices/calendar
• Box roles: TBox role (What is this?)

An exception to a recurring event schedule — a cancellation or rescheduling of a specific generated occurrence. A relator mediating the schedule, the original date, and optionally a replacement event. Retained with displayable false rather than deleted (Principle 10).

Structure

Subclass of: gufo:Relator

Practical Pattern

Use gmeow:ScheduleException as a specialized kind of gufo:Relator. Add statement metadata or a standpoint when the assertion needs provenance, confidence, or vantage.

Usage Advice

Use when

• Use when one occurrence of a recurring schedule is cancelled or moved — the RFC 5545 EXDATE/RECURRENCE-ID case — so the deviation is recorded against the rule without rewriting it.

Avoid when

• Avoid for changing the whole series (edit the gmeow:scheduleRecurrenceRule instead) and never delete the affected occurrence — a cancelled occurrence is displayable false plus this exception, retained (Principle 10).

How to use

• Link it to its gmeow:exceptionSchedule, stamp the gmeow:exceptionOriginalDate of the occurrence it overrides, set gmeow:exceptionType, and add gmeow:exceptionReplacementEvent for a reschedule (omit it for a pure cancellation).

Examples

• ex:standupSkip a gmeow:ScheduleException; gmeow:exceptionSchedule ex:standupSchedule; gmeow:exceptionOriginalDate "2026-06-19T09:00:00Z"^^xsd:dateTime; gmeow:exceptionType gmeow:exceptionTypeCancellation.