Nepomuk File Ontology (NFO)
@prefix nfo: <http://tracker.api.gnome.org/ontology/v3/nfo#>
Classes
Application, Archive, ArchiveItem, Attachment, Audio, Bookmark, BookmarkFolder, CompressionType, Cursor, DataContainer, DeletedResource, Document, EBook, EmbeddedFileDataObject, Equipment, Executable, FileDataObject, FileHash, Filesystem, FilesystemImage, Folder, Font, GameImage, HardDiskPartition, HelpDocument, HtmlDocument, Icon, Image, ImageCategory, Media, MediaFileListEntry, MediaList, MediaStream, MindMap, Note, OperatingSystem, Orientation, PaginatedTextDocument, PlainTextDocument, Presentation, RasterImage, RegionOfInterest, RegionOfInterestContent, RemoteDataObject, RemotePortAddress, Software, SoftwareApplication, SoftwareCategory, SoftwareItem, SoftwareService, SourceCode, Spreadsheet, TextDocument, Trash, VectorImage, Video, Visual, WebHistory, Website
Additional Properties
belongsToContainer, isBootable, isContentEncrypted, depiction
Class Details
Application
Description
An application
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Software
╰── nfo:Application
Archive
Description
A compressed file. May contain other files or folder inside.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:DataContainer
╰── nfo:Archive
Properties
Name | Type | Notes | Description |
---|---|---|---|
uncompressedSize | integer | Uncompressed size of the content of a compressed file. |
ArchiveItem
Description
A file entity inside an archive.
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:FileDataObject
╰── nfo:EmbeddedFileDataObject
╰── nfo:ArchiveItem
Properties
Name | Type | Notes | Description |
---|---|---|---|
isPasswordProtected | boolean | States if a given resource is password-protected. |
Attachment
Description
A file attached to another data object. Many data formats allow for attachments: emails, vcards, ical events, id3 and exif...
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:FileDataObject
╰── nfo:EmbeddedFileDataObject
╰── nfo:Attachment
Audio
Description
A file containing audio content
Note: This class emits notifications about changes, and can be monitored using
TrackerNotifier
.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Media
╰── nfo:Audio
├── nmm:Video
╰── nmm:RadioStation
Properties
Name | Type | Notes | Description |
---|---|---|---|
audioOffset | double | Specifies the start offset of this resource within a larger file, such as a single song within a recording of a radio broadcast or a CD rip. | |
averageAudioBitrate | double | The average overall bitrate of a media container. (i.e. the size of the piece of media in bits, divided by it's duration expressed in seconds). | |
bitsPerSample | integer | |
Amount of bits in each audio sample. |
channels | integer | Number of channels. This property is to be used directly if no detailed information is necessary. Otherwise use more detailed subproperties. | |
frontChannels | integer | |
Number of front channels. |
gain | integer | Gain of media | |
lfeChannels | integer | |
Number of Low Frequency Expansion (subwoofer) channels. |
peakGain | integer | Peak Gain of media | |
rearChannels | integer | |
Number of rear channels. |
sampleCount | integer | |
The amount of samples in an audio clip. |
sampleRate | double | The amount of audio samples per second. | |
sideChannels | integer | |
Number of side channels |
Bookmark
Description
A bookmark of a webbrowser. Use nie:title for the name/label, nie:contentCreated to represent the date when the user added the bookmark, and nie:contentLastModified for modifications. nfo:bookmarks to store the link.
Note: This class emits notifications about changes, and can be monitored using
TrackerNotifier
.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Bookmark
Properties
Name | Type | Notes | Description |
---|---|---|---|
bookmarks | DataObject | |
The address of the linked object. Usually a web URL. |
characterPosition | integer | Character position of the bookmark | |
pageNumber | integer | Page linked by the bookmark | |
streamDuration | integer | ||
streamPosition | integer | Stream position of the bookmark, suitable for e.g. audio books. Expressed in milliseconds |
BookmarkFolder
Description
A folder with bookmarks of a webbrowser. Use nfo:containsBookmark to relate Bookmarks. Folders can contain subfolders, use containsBookmarkFolder to relate them.
Note: This class emits notifications about changes, and can be monitored using
TrackerNotifier
.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:BookmarkFolder
Properties
Name | Type | Notes | Description |
---|---|---|---|
containsBookmark | Bookmark | |
The folder contains a bookmark. |
containsBookmarkFolder | BookmarkFolder | |
The folder contains a bookmark folder. |
CompressionType
Description
Type of compression. Instances of this class represent the limited set of values allowed for the nfo:compressionType property.
Class hierarchy
rdfs:Resource
╰── nfo:CompressionType
Cursor
Description
A Cursor.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Media
╰── nfo:Visual
╰── nfo:Image
╰── nfo:RasterImage
╰── nfo:Cursor
DataContainer
Description
A superclass for all entities, whose primary purpose is to serve as containers for other data object. They usually don't have any 'meaning' by themselves. Examples include folders, archives and optical disc images.
Note: This class emits notifications about changes, and can be monitored using
TrackerNotifier
.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement ──┐
╰── nfo:DataContainer ───┤
├── nfo:Trash │
│ └── nfo:SoftwareCategory
├── nfo:ImageCategory
├── nfo:Folder
├── nfo:Filesystem
╰── nfo:Archive
Predefined instances
nfo:DataContainer has the following predefined instances:
- nfo:image-category-screenshot
DeletedResource
Description
A file entity that has been deleted from the original source. Usually such entities are stored within various kinds of 'Trash' or 'Recycle Bin' folders.
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:FileDataObject
╰── nfo:DeletedResource
Properties
Name | Type | Notes | Description |
---|---|---|---|
deletionDate | dateTime | The date and time of the deletion. | |
originalLocation | string | The original location of the deleted resource. |
Document
Description
A generic document. A common superclass for all documents on the desktop.
Note: This class emits notifications about changes, and can be monitored using
TrackerNotifier
.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
├── nfo:TextDocument
├── nfo:Spreadsheet
├── nfo:Presentation
├── nfo:Note
├── nfo:MindMap
╰── nfo:HelpDocument
Properties
Name | Type | Notes | Description |
---|---|---|---|
tableOfContents | string | |
Section titles and figure descriptions of the document. |
EBook
Description
Books which can be electronically viewed
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:TextDocument
╰── nfo:PaginatedTextDocument
╰── nfo:EBook
EmbeddedFileDataObject
Description
A file embedded in another data object. There are many ways in which a file may be embedded in another one. Use this class directly only in cases if none of the subclasses gives a better description of your case.
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:FileDataObject
╰── nfo:EmbeddedFileDataObject
├── nfo:Attachment
╰── nfo:ArchiveItem
Properties
Name | Type | Notes | Description |
---|---|---|---|
encoding | string | The encoding used for the Embedded File. Examples might include BASE64 or UUEncode |
Equipment
Description
The equipment used to create media
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Equipment
Properties
Name | Type | Notes | Description |
---|---|---|---|
equipmentSoftware | string | The software of the equipment | |
manufacturer | string | The manufacturer of the equipment | |
model | string | The model of the equipment |
Executable
Description
An executable file.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Executable
FileDataObject
Description
A resource containing a finite sequence of bytes with arbitrary information, that is available to a computer program and is usually based on some kind of durable storage. A file is durable in the sense that it remains available for programs to use after the current program has finished.
Note: This class emits notifications about changes, and can be monitored using
TrackerNotifier
.
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:FileDataObject
├── nfo:RemoteDataObject
├── nfo:EmbeddedFileDataObject
╰── nfo:DeletedResource
Properties
Name | Type | Notes | Description |
---|---|---|---|
fileCreated | dateTime | |
File creation date |
fileLastAccessed | dateTime | |
Time when the file was last accessed. |
fileLastModified | dateTime | |
last modification date |
fileName | string | |
Name of the file, together with the extension |
fileOwner | Contact | The owner of the file as defined by the file system access rights feature. | |
fileSize | integer | |
The size of the file in bytes. For compressed files it means the size of the packed file, not of the contents. For folders it means the aggregated size of all contained files and folders |
hasHash | FileHash | Links the file with it's hash value. | |
permissions | string | A string containing the permissions of a file. A feature common in many UNIX-like operating systems. | |
extractorHash | string | Hash identifying the extractor of the metadata |
FileHash
Description
A fingerprint of the file, generated by some hashing function.
Class hierarchy
rdfs:Resource
╰── nfo:FileHash
Properties
Name | Type | Notes | Description |
---|---|---|---|
hashAlgorithm | string | Name of the algorithm used to compute the hash value. Examples might include CRC32, MD5, SHA, TTH etc. | |
hashValue | string | The actual value of the hash. |
Filesystem
Description
A filesystem. Examples of filesystems include hard disk partitions, removable media, but also images thereof stored in files.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:DataContainer
╰── nfo:Filesystem
╰── nfo:FilesystemImage
FilesystemImage
Description
An image of a filesystem. Instances of this class may include CD images, DVD images or hard disk partition images created by various pieces of software (e.g. Norton Ghost)
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:DataContainer
╰── nfo:Filesystem
╰── nfo:FilesystemImage
Folder
Description
A folder/directory. Examples of folders include folders on a filesystem and message folders in a mailbox.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:DataContainer
╰── nfo:Folder
╰── tracker:IndexedFolder
Font
Description
A font.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Font
Properties
Name | Type | Notes | Description |
---|---|---|---|
fontFamily | string | |
The name of the font family. |
foundry | Contact | |
The foundry, the organization that created the font. |
GameImage
Description
A game image. This is a Tracker extension
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Software
╰── nfo:SoftwareApplication
╰── nfo:GameImage
HardDiskPartition
Description
A partition on a hard disk
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:HardDiskPartition
HelpDocument
Description
User guides and similar to assist the user
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:HelpDocument
HtmlDocument
Description
A HTML document, may contain links to other files.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:TextDocument
╰── nfo:PlainTextDocument
╰── nfo:HtmlDocument
Icon
Description
An Icon (regardless of whether it's a raster or a vector icon. A resource representing an icon could have two types (Icon and Raster, or Icon and Vector) if required.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Media
╰── nfo:Visual
╰── nfo:Image
╰── nfo:Icon
Image
Description
A file containing an image.
Note: This class emits notifications about changes, and can be monitored using
TrackerNotifier
.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Media
╰── nfo:Visual
╰── nfo:Image
├── nmm:Photo
├── nfo:VectorImage
├── nfo:RasterImage
╰── nfo:Icon
Properties
Name | Type | Notes | Description |
---|---|---|---|
depicts | Resource | |
Relates an image to the information elements it depicts. |
hasRegionOfInterest | RegionOfInterest | |
Link an element with a defined region |
horizontalResolution | integer | Horizontal resolution of an image (if printed). Expressed in DPI. | |
orientation | Orientation | ||
verticalResolution | integer | Vertical resolution of an Image (if printed). Expressed in DPI |
ImageCategory
Description
A image category
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:DataContainer
╰── nfo:ImageCategory
Predefined instances
nfo:ImageCategory has the following predefined instances:
- nfo:image-category-screenshot
Media
Description
A piece of media content. This class may be used to express complex media containers with many streams of various media content (both aural and visual).
Class hierarchy
rdfs:Resource
╰── nie:InformationElement ──┐──┐
╰── nfo:Media ───────────┤──┤
│ └── nmm:TVShow │
├── nmm:MusicPiece │
│ └── nmm:Movie
├── nfo:Visual
╰── nfo:Audio
Properties
Name | Type | Notes | Description |
---|---|---|---|
averageBitrate | double | The average overall bitrate of a media container. (i.e. the size of the piece of media in bits, divided by it's duration expressed in seconds). | |
bitDepth | Literal | A common superproperty for all properties signifying the amount of bits for an atomic unit of data. Examples of subproperties may include bitsPerSample and bitsPerPixel | |
bitrateType | string | The type of the bitrate. Examples may include CBR and VBR. | |
codec | string | The name of the codec necessary to decode a piece of media. | |
compressionType | CompressionType | The type of the compression. Values include, lossy and lossless. | |
count | integer | A common superproperty for all properties signifying the amount of atomic media data units. Examples of subproperties may include sampleCount and frameCount. | |
duration | integer | Duration of a media piece, measured in seconds. | |
encodedBy | string | The contains the name of the person or organisation that encoded the media | |
equipment | Equipment | Equipment used to create the media | |
genre | string | |
Genre of media |
hasMediaStream | DataObject | |
Connects a media container with a single media stream contained within. |
lastPlayedPosition | integer | Position in the media (in seconds) where the play was paused. Positive number, being 0 the beginning of the media. | |
alternativeMedia | Media | |
Link between to different version of the same media. This is used for instances in uPnp where the server can provide the same video in different resolutions and codecs |
artwork | Image | |
Associated Artwork |
dlnaMime | string | Mimetypes as defined for DLNA (occasional differences compared to xdg-mime) | |
dlnaProfile | string | DLNA profile of the content, like MP3, MPEG_TS_HD_US, LPCM etc | |
genre | string | |
|
skipCounter | integer | ||
uPnPShared | boolean | Tells the uPnP MediaServer (e.g. Rygel) whether to export/share the resource or not |
MediaFileListEntry
Description
A single node in the list of media files contained within an MediaList instance. This class is intended to provide a type all those links have. In valid NRL untyped resources cannot be linked. There are no properties defined for this class but the application may expect rdf:first and rdf:last links. The former points to the DataObject instance, interpreted as Media the latter points at another MediaFileListEntr. At the end of the list there is a link to rdf:nil.
Class hierarchy
rdfs:Resource
╰── nfo:MediaFileListEntry
Properties
Name | Type | Notes | Description |
---|---|---|---|
entryUrl | string | URL to the element in certain position of the list | |
listPosition | double | Position of an entry in a list. Double, to optimize the poor insertions |
MediaList
Description
A file containing a list of media files.e.g. a playlist
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:MediaList
├── nmm:Playlist
├── nmm:MusicAlbum
╰── nmm:ImageList
Properties
Name | Type | Notes | Description |
---|---|---|---|
entryCounter | integer | Number of entries in the list. Optimize some common queries | |
hasMediaFileListEntry | MediaFileListEntry | |
This property is intended to point to an RDF list of MediaFiles. |
listDuration | integer | Sum of the duration of all items in the list. Optimize some common queries. In seconds | |
mediaListEntry | InformationElement | |
A certain item belongs to a media list. This can reflect that a song is in a playlist, an image or video in an Album |
MediaStream
Description
A stream of multimedia content, usually contained within a media container such as a movie (containing both audio and video) or a DVD (possibly containing many streams of audio and video). Most common interpretations for such a DataObject include Audio and Video.
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:MediaStream
├── nmm:DigitalRadio
╰── nmm:AnalogRadio
MindMap
Description
A MindMap, created by a mind-mapping utility. Examples might include FreeMind or mind mapper.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:MindMap
Note
Description
Usually small document with snippets, reminders or frequenly used content.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:Note
OperatingSystem
Description
An OperatingSystem
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Software
╰── nfo:OperatingSystem
╰── osinfo:Installer
Orientation
Description
Orientation enum
Class hierarchy
rdfs:Resource
╰── nfo:Orientation
Predefined instances
nfo:Orientation has the following predefined instances:
- nfo:orientation-left
- nfo:orientation-right-mirror
- nfo:orientation-right
- nfo:orientation-left-mirror
- nfo:orientation-bottom-mirror
- nfo:orientation-bottom
- nfo:orientation-top-mirror
- nfo:orientation-top
PaginatedTextDocument
Description
A file containing a text document, that is unambiguously divided into pages. Examples might include PDF, DOC, PS', DVI etc.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:TextDocument
╰── nfo:PaginatedTextDocument
╰── nfo:EBook
Properties
Name | Type | Notes | Description |
---|---|---|---|
pageCount | integer | Number of pages. |
PlainTextDocument
Description
A file containing plain text (ASCII, Unicode or other encodings). Examples may include TXT, HTML, XML, program source code etc.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:TextDocument
╰── nfo:PlainTextDocument
├── nmm:SynchronizedText
├── nfo:SourceCode
╰── nfo:HtmlDocument
Presentation
Description
A Presentation made by some presentation software (Corel Presentations, OpenOffice Impress, MS Powerpoint etc.)
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:Presentation
RasterImage
Description
A raster image.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Media
╰── nfo:Visual
╰── nfo:Image
╰── nfo:RasterImage
╰── nfo:Cursor
RegionOfInterest
Description
Area on an image with relevant content. Following the spec in http://www.metadataworkinggroup.org
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:RegionOfInterest
Properties
Name | Type | Notes | Description |
---|---|---|---|
regionOfInterestHeight | double | Height of the region. It is normalized (values between 0 and 1) to the total height of the picture. | |
regionOfInterestType | RegionOfInterestContent | The content of a region can be one of the predefined types in the spec | |
regionOfInterestWidth | double | Width of the region. It is normalized (values between 0 and 1) to the total width of the picture. | |
regionOfInterestX | double | Coordinate X where the region starts. It is normalized (values between 0 and 1) to the width of the picture. Starting in the upper left corner. | |
regionOfInterestY | double | Coordinate y where the region starts. It is normalized (values between 0 and 1) to the height of the picture. Starting in the upper left corner. | |
roiRefersTo | InformationElement | Link to an item that is represented in the region. The 'type' of the region can give a clue of what exact content is linked in this property |
RegionOfInterestContent
Description
Content in the area. There is a predefined set of contents in the spec: http://www.metadataworkinggroup.org
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:RegionOfInterestContent
Predefined instances
nfo:RegionOfInterestContent has the following predefined instances:
- nfo:roi-content-undefined
- nfo:roi-content-barcode
- nfo:roi-content-focus
- nfo:roi-content-pet
- nfo:roi-content-face
RemoteDataObject
Description
A file data object stored at a remote location. Don't confuse this class with a RemotePortAddress. This one applies to a particular resource, RemotePortAddress applies to an address, that can have various interpretations.
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:FileDataObject
╰── nfo:RemoteDataObject
RemotePortAddress
Description
An address specifying a remote host and port. Such an address can be interpreted in many ways (examples of such interpretations include mailboxes, websites, remote calendars or filesystems), depending on an interpretation, various kinds of data may be extracted from such an address.
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:RemotePortAddress
Software
Description
A piece of software. Examples may include applications and the operating system. This interpretation most commonly applies to SoftwareItems.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Software
├── nfo:SoftwareApplication
├── nfo:OperatingSystem
╰── nfo:Application
Properties
Name | Type | Notes | Description |
---|---|---|---|
conflicts | Software | States that a piece of software is in conflict with another piece of software. | |
softwareCmdLine | string | Command to launch the software | |
softwareIcon | Image | Icon of the software | |
supercedes | Software | States that a piece of software supercedes another piece of software. |
SoftwareApplication
Description
An application
Note: This class emits notifications about changes, and can be monitored using
TrackerNotifier
.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Software
╰── nfo:SoftwareApplication
╰── nfo:GameImage
SoftwareCategory
Description
A software category
Class hierarchy
rdfs:Resource
╰── nie:InformationElement ──┐
╰── nfo:DataContainer ───┤
└── nfo:SoftwareCategory
Properties
Name | Type | Notes | Description |
---|---|---|---|
softwareCategoryIcon | Image | Icon of the software |
SoftwareItem
Description
A DataObject representing a piece of software. Examples of interpretations of a SoftwareItem include an Application and an OperatingSystem.
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:SoftwareItem
SoftwareService
Description
A service published by a piece of software, either by an operating system or an application. Examples of such services may include calendar, addresbook and mailbox managed by a PIM application. This category is introduced to distinguish between data available directly from the applications (Via some Interprocess Communication Mechanisms) and data available from files on a disk. In either case both DataObjects would receive a similar interpretation (e.g. a Mailbox) and wouldn't differ on the content level.
Class hierarchy
rdfs:Resource
╰── nie:DataObject
╰── nfo:SoftwareService
SourceCode
Description
Code in a compilable or interpreted programming language.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:TextDocument
╰── nfo:PlainTextDocument
╰── nfo:SourceCode
Properties
Name | Type | Notes | Description |
---|---|---|---|
commentCharacterCount | integer | The amount of character in comments i.e. characters ignored by the compiler/interpreter. | |
definesClass | string | Name of a class defined in the source code file. | |
definesFunction | string | A name of a function/method defined in the given source code file. | |
definesGlobalVariable | string | Name of a global variable defined within the source code file. | |
programmingLanguage | string | Indicates the name of the programming language this source code file is written in. Examples might include 'C', 'C++', 'Java' etc |
Spreadsheet
Description
A spreadsheet, created by a spreadsheet application. Examples might include Gnumeric, OpenOffice Calc or MS Excel.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:Spreadsheet
TextDocument
Description
A text document
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Document
╰── nfo:TextDocument
├── nfo:PlainTextDocument
╰── nfo:PaginatedTextDocument
Properties
Name | Type | Notes | Description |
---|---|---|---|
characterCount | integer | The amount of characters in the document. | |
lineCount | integer | The amount of lines in a text document | |
wordCount | integer | The amount of words in a text document. |
Trash
Description
Represents a container for deleted files, a feature common in modern operating systems.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:DataContainer
╰── nfo:Trash
VectorImage
Description
A vector image (e.g. SVG)
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Media
╰── nfo:Visual
╰── nfo:Image
╰── nfo:VectorImage
Video
Description
A video file.
Note: This class emits notifications about changes, and can be monitored using
TrackerNotifier
.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement ──┐──┐
╰── nfo:Media ───────────┤──┤
╰── nfo:Visual ──────┤──┤
╰── nfo:Video ───┤──┤
╰── nmm:Video │ │
└── nmm:TVShow │
└── nmm:Movie
Properties
Name | Type | Notes | Description |
---|---|---|---|
averageVideoBitrate | double | The average overall bitrate of a media container. (i.e. the size of the piece of media in bits, divided by it's duration expressed in seconds). | |
frameCount | integer | |
The amount of frames in a video sequence. |
frameRate | double | Amount of video frames per second. |
Visual
Description
File containing visual content.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement ──┐──┐
╰── nfo:Media ───────────┤──┤
╰── nfo:Visual ──────┤──┤
│ └── nmm:TVShow │
│ └── nmm:Movie
├── nfo:Video
╰── nfo:Image
Properties
Name | Type | Notes | Description |
---|---|---|---|
aspectRatio | double | Visual content aspect ratio. (Width divided by Height) | |
colorDepth | integer | |
Amount of bits used to express the color of each pixel. |
heading | double | Specifies the direction of travelling while capturing image/video. The range of values from 0.00 to 359.99 (where 0 is due North, 90 is East, 180 South and 270 is West) | |
height | integer | Visual content height in pixels. | |
interlaceMode | boolean | True if the image is interlaced, false if not. | |
tilt | double | Vertical inclination of the camera while capturing the image, in angles starting on 0 as horizontal, positive numbers pointing up, negative angles pointing down | |
width | integer | Visual content width in pixels. |
WebHistory
Description
A web history entry
Note: This class emits notifications about changes, and can be monitored using
TrackerNotifier
.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:WebHistory
Properties
Name | Type | Notes | Description |
---|---|---|---|
domain | string | ||
uri | string |
Website
Description
A website, usually a container for remote resources, that may be interpreted as HTMLDocuments, images or other types of content.
Class hierarchy
rdfs:Resource
╰── nie:InformationElement
╰── nfo:Website
Property Details
Additional properties for nie:DataObject
Description
Properties this ontology defines which can describe nie:DataObject resources.
Properties
Name | Type | Notes | Description |
---|---|---|---|
belongsToContainer | DataContainer | |
Models the containment relations between Files and Folders (or CompressedFiles). |
Additional properties for nie:InformationElement
Description
Properties this ontology defines which can describe nie:InformationElement resources.
Properties
Name | Type | Notes | Description |
---|---|---|---|
isBootable | boolean | True when the file is bootable, for example like an ISO or other disc images | |
isContentEncrypted | boolean | Might change (IE of DataObject property?) |
Additional properties for rdfs:Resource
Description
Properties this ontology defines which can describe rdfs:Resource resources.
Properties
Name | Type | Notes | Description |
---|---|---|---|
depiction | Image | |
Relates an information element to an image which depicts said element. |
Credits and Copyright
Authors:
- Antoni Mylka, DFKI, <antoni.mylka@dfki.de>
- Leo Sauermann, DFKI, <leo.sauermann@dfki.de>
- Ludger van Elst, DFKI, <elst@dfki.uni-kl.de>
- Michael Sintek, DFKI, <michael.sintek@dfki.de>
- Tracker Developers
Editors:
- Antoni Mylka, DFKI, <antoni.mylka@dfki.de>
- Tracker developers (translation into turtle)
Contributors:
- Christiaan Fluit, Aduna, <christiaan.fluit@aduna-software.com>
- Evgeny 'phreedom' Egorochkin, KDE Strigi Developer, <stexx@mail.ru>
Upstream: Upstream version
ChangeLog: Tracker changes
Copyright:
© 2007
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