0d5d48568d
- Remove slot_uri, description, mappings from slot_usage sections - Move these properties to centralized slot files in modules/slots/ - Keep only class-specific overrides in slot_usage (required, inlined, examples) - Update 1,499 centralized slot files with enriched definitions - Clean 188 class files Violations fixed: - slot_uri in slot_usage: 1,676 → 0 - description in slot_usage: 2,287 → 0 (moved to centralized) Schema still validates: 816 classes, 2028 slots, 127 enums
284 lines
7.9 KiB
YAML
284 lines
7.9 KiB
YAML
id: https://nde.nl/ontology/hc/class/FileAPI
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name: file_api
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title: FileAPI 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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dcat: http://www.w3.org/ns/dcat#
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dcterms: http://purl.org/dc/terms/
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schema: http://schema.org/
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premis: http://www.loc.gov/premis/rdf/v3/
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xsd: http://www.w3.org/2001/XMLSchema#
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imports:
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- linkml:types
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- ../metadata
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- ./DataServiceEndpoint
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- ../slots/protocol
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- ../slots/authentication_required
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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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- ../enums/ContentDispositionEnum
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classes:
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FileAPI:
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is_a: DataServiceEndpoint
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class_uri: hc:FileAPI
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description: "File/asset retrieval API for downloading digital content.\n\n**Purpose:**\n\nModels endpoints that provide\
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\ direct access to digital files\n(images, documents, audio, video, 3D models) stored in heritage repositories.\n\n\
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**Distinction from Image Servers:**\n\n- **FileAPI**: Downloads original or derivative files as-is\n- **IIPImageServer**:\
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\ Dynamic image delivery with zooming, tiling, region extraction\n\nUse FileAPI when you need:\n- Original/master files\n\
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- Fixed-resolution derivatives\n- Non-image files (PDFs, audio, video, office documents)\n\n**Example - Nationaal Archief\
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\ File API:**\n\n```yaml\nfile_api:\n endpoint_name: \"Nationaal Archief File API\"\n base_url: \"https://service.archief.nl/gaf/api/file/v1/\"\
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\n url_pattern: \"{base_url}{uuid}/{level}/{format}\"\n version: \"v1\"\n supported_levels:\n - MASTER\n -\
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\ HIGH\n - MEDIUM\n - LOW\n - THUMBNAIL\n supported_format:\n - image/jpeg\n - image/png\n - application/pdf\n\
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\ max_file_size_mb: 500\n supports_range_requests: true\n example_url: \"https://service.archief.nl/gaf/api/file/v1/12345678.../high/jpeg\"\
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\n```\n\n**Use Cases:**\n\n1. **Download master files**: Archival-quality preservation copies\n2. **Generate derivatives**:\
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\ Request specific size/format\n3. **Batch harvesting**: Download all files for a record\n4. **Streaming**: Audio/video\
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\ delivery\n\n**See Also:**\n\n- Content-Disposition header for filename hints\n- HTTP Range requests (RFC 7233) for\
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\ partial downloads\n"
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attributes:
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base_url:
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slot_uri: dcat:endpointURL
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description: 'Base URL for file retrieval.
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Individual files are accessed by appending identifiers.
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Example: "https://service.archief.nl/gaf/api/file/v1/"
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'
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range: uri
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required: true
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url_pattern:
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slot_uri: hydra:template
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description: 'URL pattern for constructing file requests.
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Use {placeholders} for dynamic parts:
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- {uuid}: File identifier
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- {level}: Quality level (master, high, low, thumbnail)
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- {format}: File format (jpeg, png, pdf)
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Example: "{base_url}{uuid}/{level}/{format}"
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'
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range: string
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identifier_type:
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slot_uri: dcterms:identifier
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description: 'Type of identifier used to request files.
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Values: UUID, HANDLE, DOI, ARK, LOCAL_ID, FILENAME
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'
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range: string
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supported_levels:
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slot_uri: schema:encodingFormat
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description: 'Quality/resolution levels available.
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Common levels:
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- MASTER/ORIGINAL: Archival master file
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- HIGH: High-resolution derivative
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- MEDIUM: Medium resolution (web-suitable)
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- LOW: Low resolution (fast loading)
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- THUMBNAIL: Small preview image
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Example: ["MASTER", "HIGH", "MEDIUM", "LOW", "THUMBNAIL"]
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'
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range: string
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multivalued: true
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supported_format:
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slot_uri: dcterms:format
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description: 'File formats (MIME types) available for download.
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May vary by content type and level.
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Example:
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- Images: ["image/jpeg", "image/png", "image/tiff"]
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- Documents: ["application/pdf", "application/xml"]
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- Audio: ["audio/mpeg", "audio/wav"]
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- Video: ["video/mp4", "video/webm"]
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'
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range: string
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multivalued: true
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required: true
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max_file_size_mb:
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slot_uri: schema:contentSize
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description: 'Maximum file size available for download (in MB).
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Larger files may require special access or batch delivery.
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Example: 500
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'
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range: integer
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typical_file_size_mb:
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slot_uri: schema:contentSize
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description: 'Typical file size for most downloads (in MB).
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Helps clients estimate download times.
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Example: 10
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'
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range: integer
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supports_range_requests:
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slot_uri: schema:additionalProperty
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description: 'Whether HTTP Range requests are supported (RFC 7233).
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Enables:
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- Resumable downloads
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- Partial content retrieval
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- Streaming
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Check for Accept-Ranges: bytes header.
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'
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range: boolean
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supports_streaming:
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slot_uri: schema:additionalProperty
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description: 'Whether the API supports media streaming.
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Relevant for audio/video content.
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Enables progressive playback without full download.
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'
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range: boolean
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content_disposition:
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slot_uri: schema:additionalProperty
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description: 'Content-Disposition header behavior.
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Values:
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- INLINE: Browser displays content
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- ATTACHMENT: Browser downloads file
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- CONFIGURABLE: Client can request either
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'
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range: ContentDispositionEnum
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filename_in_url:
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slot_uri: schema:additionalProperty
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description: 'Whether original filename is included in URL.
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Some APIs include filename for better download naming:
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/api/file/v1/uuid/original.tif
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'
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range: boolean
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supports_batch_download:
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slot_uri: schema:additionalProperty
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description: 'Whether batch/bulk download is supported.
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May provide ZIP archives or async batch jobs.
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'
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range: boolean
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batch_download_format:
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slot_uri: dcterms:format
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description: 'Format for batch downloads.
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Example: "application/zip"
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'
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range: string
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thumbnail_dimensions:
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slot_uri: schema:width
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description: 'Dimensions of thumbnail images (if thumbnail level available).
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Format: "WIDTHxHEIGHT"
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Example: "150x150"
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'
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range: string
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watermark_applied:
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slot_uri: schema:additionalProperty
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description: 'Whether watermarks are applied to downloaded files.
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May vary by access level or file type.
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'
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range: boolean
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has_or_had_access_restriction:
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slot_uri: dcterms:accessRights
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description: 'Access restrictions on file downloads.
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Examples:
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- "Public access to all levels"
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- "Master files require authentication"
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- "Some collections IP-restricted"
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'
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range: string
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example_url:
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slot_uri: schema:workExample
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description: 'Example URL for file download.
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Example: "https://service.archief.nl/gaf/api/file/v1/12345678.../high/jpeg"
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'
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range: uri
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slot_usage:
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specificity_annotation:
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range: SpecificityAnnotation
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inlined: true
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template_specificity:
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range: TemplateSpecificityScores
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inlined: true
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comments:
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- Essential for downloading digital content from heritage repositories
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- Master files may have access restrictions
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- Use Range requests for large file downloads
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see_also:
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- https://developer.mozilla.org/en-US/docs/Web/HTTP/Range_requests
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- https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Disposition
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slots:
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- specificity_annotation
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- template_specificity
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