Application

An application

• Class

Archive

A compressed file. May contain other files or folder inside.

• Class

ArchiveItem

A file entity inside an archive.

• Class

aspectRatio

Visual content aspect ratio. (Width divided by Height)

• Property

Attachment

A file attached to another data object. Many data formats allow for attachments: emails, vcards, ical events, id3 and exif...

• Class

Audio

A file containing audio content

• Class

averageBitrate

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).

• Property

belongsToContainer

Models the containment relations between Files and Folders (or CompressedFiles).

• Property

bitDepth

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

• Property

bitrateType

The type of the bitrate. Examples may include CBR and VBR.

• Property

bitsPerSample

Amount of bits in each audio sample.

• Property

Bookmark

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.

• Class

Bookmark Folder

A folder with bookmarks of a webbrowser. Use nfo:containsBookmark to relate Bookmarks. Folders can contain subfolders, use containsBookmarkFolder to relate them.

• Class

channels

Number of channels. This property is to be used directly if no detailed information is necessary. Otherwise use more detailed subproperties.

• Property

characterCount

The amount of characters in the document.

• Property

codec

The name of the codec necessary to decode a piece of media.

• Property

colorDepth

Amount of bits used to express the color of each pixel.

• Property

commentCharacterCount

The amount of character in comments i.e. characters ignored by the compiler/interpreter.

• Property

CompressionType

Type of compression. Instances of this class represent the limited set of values allowed for the nfo:compressionType property.

• Class

compressionType

The type of the compression. Values include, 'lossy' and 'lossless'.

• Property

conflicts

States that a piece of software is in conflict with another piece of software.

• Property

contains bookmark

The folder contains a bookmark.

• Property

contains folder

The folder contains a bookmark folder.

• Property

count

A common superproperty for all properties signifying the amount of atomic media data units. Examples of subproperties may include sampleCount and frameCount.

• Property

Cursor

A Cursor.

• Class

DataContainer

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.

• Class

definesClass

Name of a class defined in the source code file.

• Property

definesFunction

A name of a function/method defined in the given source code file.

• Property

definesGlobalVariable

Name of a global variable defined within the source code file.

• Property

DeletedResource

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

deletionDate

The date and time of the deletion.

• Property

Document

A generic document. A common superclass for all documents on the desktop.

• Class

duration

Duration of a media piece.

• Property

EmbeddedFileDataObject

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

encoding

The encoding used for the Embedded File. Examples might include BASE64 or UUEncode

• Property

Executable

An executable file.

• Class

File

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.

• Class

fileCreated

File creation date

• Property

FileHash

A fingerprint of the file, generated by some hashing function.

• Class

fileLastAccessed

Time when the file was last accessed.

• Property

fileLastModified

last modification date

• Property

fileName

Name of the file, together with the extension

• Property

fileOwner

The owner of the file as defined by the file system access rights feature.

• Property

fileSize

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

• Property

fileUrl

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.

• Property

Filesystem

A filesystem. Examples of filesystems include hard disk partitions, removable media, but also images thereof stored in files.

• Class

FilesystemImage

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

Folder

A folder/directory. Examples of folders include folders on a filesystem and message folders in a mailbox.

• Class

Font

A font.

• Class

fontFamily

The name of the font family.

• Property

foundry

The foundry, the organization that created the font.

• Property

frameCount

The amount of frames in a video sequence.

• Property

frameRate

Amount of video frames per second.

• Property

frontChannels

Number of front channels.

• Property

HardDiskPartition

A partition on a hard disk

• Class

hasHash

Links the file with it's hash value.

• Property

hasMediaFileListEntry

This property is intended to point to an RDF list of MediaFiles.

• Property

hasMediaStream

Connects a media container with a single media stream contained within.

• Property

hashAlgorithm

Name of the algorithm used to compute the hash value. Examples might include CRC32, MD5, SHA, TTH etc.

• Property

hashValue

The actual value of the hash.

• Property

height

Visual content height in pixels.

• Property

horizontalResolution

Horizontal resolution of an image (if printed). Expressed in DPI.

• Property

HtmlDocument

A HTML document, may contain links to other files.

• Class

Icon

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

Image

A file containing an image.

• Class

interlaceMode

True if the image is interlaced, false if not.

• Property

isPasswordProtected

States if a given resource is password-protected.

• Property

lfeChannels

Number of Low Frequency Expansion (subwoofer) channels.

• Property

lineCount

The amount of lines in a text document

• Property

link

The address of the linked object. Usually a web URI.

• Property

losslessCompressionType

• CompressionType

lossyCompressionType

• CompressionType

Media

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

MediaFileListEntry

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

MediaList

A file containing a list of media files.e.g. a playlist

• Class

MediaStream

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

MindMap

A MindMap, created by a mind-mapping utility. Examples might include FreeMind or mind mapper.

• Class

OperatingSystem

An OperatingSystem

• Class

originalLocation

The original location of the deleted resource.

• Property

pageCount

Number of pages.

• Property

PaginatedTextDocument

A file containing a text document, that is unambiguously divided into pages. Examples might include PDF, DOC, PS, DVI etc.

• Class

permissions

A string containing the permissions of a file. A feature common in many UNIX-like operating systems.

• Property

PlainTextDocument

A file containing plain text (ASCII, Unicode or other encodings). Examples may include TXT, HTML, XML, program source code etc.

• Class

Presentation

A Presentation made by some presentation software (Corel Presentations, OpenOffice Impress, MS Powerpoint etc.)

• Class

programmingLanguage

Indicates the name of the programming language this source code file is written in. Examples might include 'C', 'C++', 'Java' etc.

• Property

RasterImage

A raster image.

• Class

rate

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.

• Property

rearChannels

Number of rear channels.

• Property

RemoteDataObject

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

RemotePortAddress

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

sampleCount

The amount of samples in an audio clip.

• Property

sampleRate

The amount of audio samples per second.

• Property

sideChannels

Number of side channels

• Property

Software

A piece of software. Examples may include applications and the operating system. This interpretation most commonly applies to SoftwareItems.

• Class

SoftwareItem

A DataObject representing a piece of software. Examples of interpretations of a SoftwareItem include an Application and an OperatingSystem.

• Class

SoftwareService

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

SourceCode

Code in a compilable or interpreted programming language.

• Class

Spreadsheet

A spreadsheet, created by a spreadsheet application. Examples might include Gnumeric, OpenOffice Calc or MS Excel.

• Class

supercedes

States that a piece of software supercedes another piece of software.

• Property

TextDocument

A text document

• Class

Trash

Represents a container for deleted files, a feature common in modern operating systems.

• Class

uncompressedSize

Uncompressed size of the content of a compressed file.

• Property

VectorImage

• Class

verticalResolution

Vertical resolution of an Image (if printed). Expressed in DPI

• Property

Video

A video file.

• Class

Visual

File containing visual content.

• Class

Website

A website, usually a container for remote resources, that may be interpreted as HTMLDocuments, images or other types of content.

• Class

width

Visual content width in pixels.

• Property

wordCount

The amount of words in a text document.

• Property