RemotePortAddress
type: Class
comment: 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.
subclass of: DataObject

TextDocument
type: Class
comment: A text document
subclass of: Document

Document
type: Class
comment: A generic document. A common superclass for all documents on the desktop.
subclass of: InformationElement

MediaFileListEntry
type: Class
comment: 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.
subclass of: Resource

VectorImage
type: Class
subclass of: Image

Image
type: Class
comment: A file containing an image.
subclass of: Visual

Audio
type: Class
comment: A file containing audio content
subclass of: Media

Media
type: Class
comment: 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).
subclass of: InformationElement

CompressionType
type: Class
comment: Type of compression. Instances of this class represent the limited set of values allowed for the nfo:compressionType property.
subclass of: Resource

Icon
type: Class
comment: 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.
subclass of: Image

HtmlDocument
type: Class
comment: A HTML document, may contain links to other files.
subclass of: PlainTextDocument

PlainTextDocument
type: Class
comment: A file containing plain text (ASCII, Unicode or other encodings). Examples may include TXT, HTML, XML, program source code etc.
subclass of: TextDocument

Visual
type: Class
comment: File containing visual content.
subclass of: Media

Software
type: Class
comment: A piece of software. Examples may include applications and the operating system. This interpretation most commonly applies to SoftwareItems.
subclass of: InformationElement

OperatingSystem
type: Class
comment: An OperatingSystem
subclass of: Software

MediaList
type: Class
comment: A file containing a list of media files.e.g. a playlist
subclass of: InformationElement

Executable
type: Class
comment: An executable file.
subclass of: InformationElement

FileDataObject
type: Class
comment: 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.
subclass of: DataObject

Folder
type: Class
comment: A folder/directory. Examples of folders include folders on a filesystem and message folders in a mailbox.
subclass of: DataContainer

DataContainer
type: Class
comment: 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.
subclass of: InformationElement

Font
type: Class
comment: A font.
subclass of: InformationElement

Filesystem
type: Class
comment: A filesystem. Examples of filesystems include hard disk partitions, removable media, but also images thereof stored in files.
subclass of: DataContainer

SoftwareService
type: Class
comment: 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.
subclass of: DataObject

SoftwareItem
type: Class
comment: A DataObject representing a piece of software. Examples of interpretations of a SoftwareItem include an Application and an OperatingSystem.
subclass of: DataObject

Presentation
type: Class
comment: A Presentation made by some presentation software (Corel Presentations, OpenOffice Impress, MS Powerpoint etc.)
subclass of: Document

RemoteDataObject
type: Class
comment: 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.
subclass of: FileDataObject

PaginatedTextDocument
type: Class
comment: A file containing a text document, that is unambiguously divided into pages. Examples might include PDF, DOC, PS, DVI etc.
subclass of: TextDocument

Video
type: Class
comment: A video file.
subclass of: Visual

Spreadsheet
type: Class
comment: A spreadsheet, created by a spreadsheet application. Examples might include Gnumeric, OpenOffice Calc or MS Excel.
subclass of: Document

Trash
type: Class
comment: Represents a container for deleted files, a feature common in modern operating systems.
subclass of: DataContainer

FileHash
type: Class
comment: A fingerprint of the file, generated by some hashing function.
subclass of: Resource

SourceCode
type: Class
comment: Code in a compilable or interpreted programming language.
subclass of: PlainTextDocument

Application
type: Class
comment: An application
subclass of: Software

EmbeddedFileDataObject
type: Class
comment: 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.
subclass of: FileDataObject

Attachment
type: Class
comment: A file attached to another data object. Many data formats allow for attachments: emails, vcards, ical events, id3 and exif...
subclass of: EmbeddedFileDataObject

ArchiveItem
type: Class
comment: A file entity inside an archive.
subclass of: EmbeddedFileDataObject

Archive
type: Class
comment: A compressed file. May contain other files or folder inside.
subclass of: DataContainer

MindMap
type: Class
comment: A MindMap, created by a mind-mapping utility. Examples might include FreeMind or mind mapper.
subclass of: Document

MediaStream
type: Class
comment: 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.
subclass of: DataObject

Bookmark Folder
type: Class
comment: A folder with bookmarks of a webbrowser. Use nfo:containsBookmark to relate Bookmarks. Folders can contain subfolders, use containsBookmarkFolder to relate them.
subclass of: InformationElement

FilesystemImage
type: Class
comment: 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)
subclass of: Filesystem

HardDiskPartition
type: Class
comment: A partition on a hard disk
subclass of: DataObject

Cursor
type: Class
comment: A Cursor.
subclass of: RasterImage

RasterImage
type: Class
comment: A raster image.
subclass of: Image

Bookmark
type: Class
comment: 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.
subclass of: InformationElement

DeletedResource
type: Class
comment: 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.
subclass of: FileDataObject

Website
type: Class
comment: A website, usually a container for remote resources, that may be interpreted as HTMLDocuments, images or other types of content.
subclass of: InformationElement

sideChannels
type: Property
comment: Number of side channels
sub property of: channels
range: integer

channels
type: Property
comment: Number of channels. This property is to be used directly if no detailed information is necessary. Otherwise use more detailed subproperties.
domain: Audio
range: integer

frameRate
type: Property
comment: Amount of video frames per second.
domain: Video
sub property of: rate
range: float

rate
type: Property
comment: A common superproperty for all properties specifying the media rate. Examples of subproperties may include frameRate for video and sampleRate for audio. This property is expressed in units per second.
domain: Media
range: float

commentCharacterCount
type: Property
comment: The amount of character in comments i.e. characters ignored by the compiler/interpreter.
domain: SourceCode
range: integer

duration
type: Property
comment: Duration of a media piece.
domain: Media
range: duration

wordCount
type: Property
comment: The amount of words in a text document.
domain: TextDocument
range: integer

fileLastAccessed
type: Property
comment: Time when the file was last accessed.
domain: FileDataObject
sub property of: date
range: dateTime

fileCreated
type: Property
comment: File creation date
sub property of: created
domain: FileDataObject
range: dateTime

belongsToContainer
type: Property
comment: Models the containment relations between Files and Folders (or CompressedFiles).
sub property of: isPartOf
domain: DataObject
range: DataContainer

aspectRatio
type: Property
comment: Visual content aspect ratio. (Width divided by Height)
domain: Visual
range: float

fileSize
type: Property
comment: 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
sub property of: byteSize
domain: FileDataObject
range: integer

conflicts
type: Property
comment: States that a piece of software is in conflict with another piece of software.
domain: Software
range: Software

hashValue
type: Property
comment: The actual value of the hash.
domain: FileHash
range: string

pageCount
type: Property
comment: Number of pages.
domain: PaginatedTextDocument
range: integer

programmingLanguage
type: Property
comment: Indicates the name of the programming language this source code file is written in. Examples might include 'C', 'C++', 'Java' etc.
domain: SourceCode
range: string

definesClass
type: Property
comment: Name of a class defined in the source code file.
domain: SourceCode
range: string

interlaceMode
type: Property
comment: True if the image is interlaced, false if not.
domain: Visual
range: boolean

permissions
type: Property
comment: A string containing the permissions of a file. A feature common in many UNIX-like operating systems.
domain: FileDataObject
range: string

count
type: Property
comment: A common superproperty for all properties signifying the amount of atomic media data units. Examples of subproperties may include sampleCount and frameCount.
domain: Media
range: integer

lfeChannels
type: Property
comment: Number of Low Frequency Expansion (subwoofer) channels.
sub property of: channels
range: integer

supercedes
type: Property
comment: States that a piece of software supercedes another piece of software.
range: Software
domain: Software

definesFunction
type: Property
comment: A name of a function/method defined in the given source code file.
domain: SourceCode
range: string

hasMediaFileListEntry
type: Property
comment: This property is intended to point to an RDF list of MediaFiles.
range: MediaFileListEntry
domain: MediaList

height
type: Property
comment: Visual content height in pixels.
domain: Visual
range: integer

hashAlgorithm
type: Property
comment: Name of the algorithm used to compute the hash value. Examples might include CRC32, MD5, SHA, TTH etc.
domain: FileHash
range: string

fileName
type: Property
comment: Name of the file, together with the extension
domain: FileDataObject
range: string

encoding
type: Property
comment: The encoding used for the Embedded File. Examples might include BASE64 or UUEncode
domain: EmbeddedFileDataObject
range: string

verticalResolution
type: Property
comment: Vertical resolution of an Image (if printed). Expressed in DPI
domain: Image
range: integer

definesGlobalVariable
type: Property
comment: Name of a global variable defined within the source code file.
domain: SourceCode
range: string

compressionType
type: Property
comment: The type of the compression. Values include, 'lossy' and 'lossless'.
range: CompressionType
domain: Media

hasMediaStream
type: Property
comment: Connects a media container with a single media stream contained within.
range: DataObject
sub property of: hasPart
domain: Media

fileUrl
type: Property
comment: URL of the file. It points at the location of the file. In cases where creating a simple file:// or http:// URL for a file is difficult (e.g. for files inside compressed archives) the applications are encouraged to use conventions defined by Apache Commons VFS Project at http://jakarta.apache.org/ commons/ vfs/ filesystems.html.
domain: FileDataObject
range: Resource

width
type: Property
comment: Visual content width in pixels.
domain: Visual
range: integer

sampleCount
type: Property
comment: The amount of samples in an audio clip.
domain: Audio
sub property of: count
range: integer

lineCount
type: Property
comment: The amount of lines in a text document
domain: TextDocument
range: integer

bitsPerSample
type: Property
comment: Amount of bits in each audio sample.
domain: Audio
sub property of: bitDepth
range: integer

bitDepth
type: Property
comment: 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
domain: Media
range: Literal

hasHash
type: Property
comment: Links the file with it's hash value.
domain: FileDataObject
range: FileHash

fileOwner
type: Property
comment: The owner of the file as defined by the file system access rights feature.
range: Contact
domain: FileDataObject

contains folder
type: Property
comment: The folder contains a bookmark folder.
domain: Bookmark Folder
range: Bookmark Folder
sub property of: hasLogicalPart

codec
type: Property
comment: The name of the codec necessary to decode a piece of media.
domain: Media
range: Literal

fontFamily
type: Property
comment: The name of the font family.
domain: Font
range: string

frontChannels
type: Property
comment: Number of front channels.
sub property of: channels
range: integer

originalLocation
type: Property
comment: The original location of the deleted resource.
domain: DeletedResource
range: string

foundry
type: Property
comment: The foundry, the organization that created the font.
range: Contact
sub property of: creator
domain: Font

colorDepth
type: Property
comment: Amount of bits used to express the color of each pixel.
domain: Visual
sub property of: bitDepth
range: integer

frameCount
type: Property
comment: The amount of frames in a video sequence.
domain: Video
sub property of: count
range: integer

horizontalResolution
type: Property
comment: Horizontal resolution of an image (if printed). Expressed in DPI.
domain: Image
range: integer

characterCount
type: Property
comment: The amount of characters in the document.
domain: TextDocument
range: integer

bitrateType
type: Property
comment: The type of the bitrate. Examples may include CBR and VBR.
domain: Media
range: string

isPasswordProtected
type: Property
comment: States if a given resource is password-protected.
domain: ArchiveItem
range: boolean

sampleRate
type: Property
comment: The amount of audio samples per second.
domain: Audio
sub property of: rate
range: float

fileLastModified
type: Property
comment: last modification date
domain: FileDataObject
sub property of: date
range: dateTime

contains bookmark
type: Property
comment: The folder contains a bookmark.
domain: Bookmark Folder
range: Bookmark
sub property of: hasLogicalPart

averageBitrate
type: Property
comment: 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).
domain: Media
sub property of: rate
range: float

deletionDate
type: Property
comment: The date and time of the deletion.
domain: DeletedResource
range: dateTime

link
type: Property
comment: The address of the linked object. Usually a web URI.
domain: Bookmark
sub property of: links
range: DataObject

uncompressedSize
type: Property
comment: Uncompressed size of the content of a compressed file.
domain: Archive
range: integer

rearChannels
type: Property
comment: Number of rear channels.
sub property of: channels
range: integer

lossyCompressionType
type: CompressionType

losslessCompressionType
type: CompressionType