53c6dbc2d9
Major slot migrations following slot_fixes.yaml revisions: - TimeSpan: begin_of_the_begin, begin_of_the_end, end_of_the_begin, end_of_the_end - Quantity: has_or_had_measurement_unit with MeasureUnit class - Description: has_or_had_description with Description class - URL, WikiData, Timestamp, Location, Provenance pattern classes New slots for RiC-O compliance: - Temporal: has_or_had_time_interval, calendar_system - Transfer: is_or_was_transferred, has_or_had_policy - Location: starts/ends_or_started/ended_at_location - Provenance: has_or_had_provenance_path, is_or_was_webarchived_at Archive deprecated slots per Rule 53 workflow.
151 lines
4.8 KiB
YAML
151 lines
4.8 KiB
YAML
# Timestamp class
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# A point in time with optional precision and calendar metadata
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#
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# Generation date: 2026-01-15
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# Rule compliance: 0 (LinkML single source of truth), 38 (slot centralization), 53 (slot_fixes.yaml)
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#
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# This class supports 6 slot migrations per slot_fixes.yaml:
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# - valid_to_geo
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# - valid_to
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# - valid_from_geo
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# - valid_from
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# - updated_at
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# - unesco_inscription_year
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#
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# Ontological basis: OWL Time Instant (time:Instant)
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id: https://nde.nl/ontology/hc/class/Timestamp
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name: timestamp_class
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title: Timestamp Class
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prefixes:
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linkml: https://w3id.org/linkml/
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hc: https://nde.nl/ontology/hc/
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time: http://www.w3.org/2006/time#
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xsd: http://www.w3.org/2001/XMLSchema#
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crm: http://www.cidoc-crm.org/cidoc-crm/
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schema: http://schema.org/
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default_prefix: hc
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imports:
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- linkml:types
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- ../metadata
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- ../slots/timestamp_value
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- ../slots/timestamp_precision
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- ../slots/calendar_system
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- ../slots/specificity_annotation
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- ../slots/template_specificity
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- ./SpecificityAnnotation
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- ./TemplateSpecificityScores
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classes:
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Timestamp:
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class_uri: time:Instant
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description: |
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A point in time with optional precision and calendar metadata.
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**Purpose**:
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Timestamp provides a reusable class for representing temporal instants
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with explicit precision indicators. This supports EDTF-style partial
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dates (year-only, year-month, full date, datetime) and calendar system
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annotation for non-Gregorian dates.
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**Ontological Alignment**:
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- **Primary**: `time:Instant` - OWL Time instant
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- **Close**: `crm:E61_Time_Primitive` - CIDOC-CRM time primitive
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- **Related**: `xsd:dateTime` - XML Schema dateTime
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**Use Cases**:
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- Beginning/ending of time spans (TimeSpan.begin_of_the_begin, etc.)
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- Validity dates (valid_from, valid_to)
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- Update timestamps (updated_at, created_at)
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- Historical dates with varying precision
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**Precision Levels**:
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- year: "1995" (EDTF: "1995")
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- month: "1995-06" (EDTF: "1995-06")
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- day: "1995-06-15" (EDTF: "1995-06-15")
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- datetime: "1995-06-15T10:30:00" (full precision)
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**Replaces** (per slot_fixes.yaml):
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- `valid_to_geo` → TimeSpan.end_of_the_end: Timestamp
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- `valid_to` → TimeSpan.end_of_the_end: Timestamp
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- `valid_from_geo` → TimeSpan.begin_of_the_begin: Timestamp
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- `valid_from` → TimeSpan.begin_of_the_begin: Timestamp
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- `updated_at` → was_last_updated_at: TimeSpan
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- `unesco_inscription_year` → TimeSpan.begin_of_the_begin: Timestamp
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exact_mappings:
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- time:Instant
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close_mappings:
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- crm:E61_Time_Primitive
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related_mappings:
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- xsd:dateTime
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- schema:DateTime
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slots:
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- timestamp_value
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- timestamp_precision
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- calendar_system
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- specificity_annotation
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- template_specificity
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slot_usage:
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timestamp_value:
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description: |
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The timestamp value as ISO 8601 string.
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Precision determined by string format:
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- "1995" = year precision
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- "1995-06" = month precision
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- "1995-06-15" = day precision
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- "1995-06-15T10:30:00Z" = full datetime
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range: string
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required: true
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pattern: "^-?\\d{4}(-\\d{2})?(-\\d{2})?(T\\d{2}:\\d{2}(:\\d{2})?(\\.\\d+)?(Z|[+-]\\d{2}:\\d{2})?)?$"
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timestamp_precision:
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description: |
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Explicit precision level. Auto-derived from timestamp_value if not provided.
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Values: year, month, day, hour, minute, second, millisecond
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range: string
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required: false
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examples:
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- value: year
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- value: day
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- value: second
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calendar_system:
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description: |
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Calendar system for the timestamp. Default is Gregorian.
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For historical or non-Western dates, specify the calendar.
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range: string
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required: false
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examples:
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- value: gregorian
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- value: julian
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- value: hebrew
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- value: islamic
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annotations:
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custodian_types: '["*"]'
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custodian_types_rationale: Generic timestamp class applicable to all types.
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custodian_types_primary: null
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specificity_score: 0.15
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specificity_rationale: Very broadly applicable generic class for temporal points.
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examples:
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- value: |
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timestamp_value: "1995"
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timestamp_precision: year
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description: "Year-only timestamp (e.g., founding year)"
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- value: |
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timestamp_value: "2024-06-15"
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timestamp_precision: day
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calendar_system: gregorian
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description: "Full date timestamp"
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- value: |
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timestamp_value: "2024-06-15T14:30:00Z"
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timestamp_precision: second
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calendar_system: gregorian
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description: "Full datetime timestamp"
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