This page has been moved to http://xesam.org/main/XesamOntologyDraft
This is only a draft, not a final spec
Don't edit. This page is autogenerated, 2007-08-31
Xesam Core Ontology
All objects are characterized by two main properties; Source and Content. These are read as fields on the object and in addition to characterizing the type and representation of the object also imply which other fields to expect.
Source: The physical representation of the object.
Content: The abstract interpretation of the object.
And example could be an office document stored on the harddisk. It would have source File and category Document.
Categories and Fields
Source and Content are called categories. Technically speaking a category is the top level of a branch in the ontology tree that is not a field. Third party can install new categories, but this is not expected to be a common thing. The two default categories of the xesam core ontology should suffice for most purposes.
A category define what fields make sense on an object belonging to it. These fields are not guaranteed to be set though.
Sources
Source, xesam:ArchivedFile
Url
http://freedesktop.org/standards/xesam/1.0/core#ArchivedFile
Parents
Children
Fields implied
xesam:compressionAlgorithm, xesam:compressionLevel, xesam:isSourceEncrypted
Description: Generic archived file
All fields: xesam:autoRating, xesam:comment, xesam:compressionAlgorithm, xesam:compressionLevel, xesam:fileExtension, xesam:firstUsed, xesam:group, xesam:isEncrypted, xesam:isSourceEncrypted, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:owner, xesam:permissions, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Source, xesam:BlockDevice
Url
http://freedesktop.org/standards/xesam/1.0/core#BlockDevice
Parents
Children
Fields implied
Description: Generic block device. Typically contains partitions/filesystems
All fields: xesam:autoRating, xesam:comment, xesam:firstUsed, xesam:isEncrypted, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Source, xesam:DeletedFile
Url
http://freedesktop.org/standards/xesam/1.0/core#DeletedFile
Parents
Children
Fields implied
Description: File deleted to trash
All fields: xesam:autoRating, xesam:comment, xesam:deletionTime, xesam:fileExtension, xesam:firstUsed, xesam:group, xesam:isEncrypted, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:originalLocation, xesam:owner, xesam:permissions, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Source, xesam:EmbeddedObject
Url
http://freedesktop.org/standards/xesam/1.0/core#EmbeddedObject
Parents
Children
Fields implied
Description: Generic embedded/inlined object: attachment, inlined SVG, script etc.
All fields: xesam:autoRating, xesam:comment, xesam:firstUsed, xesam:isEncrypted, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Source, xesam:File
Url
http://freedesktop.org/standards/xesam/1.0/core#File
Parents
Children
Fields implied
Description: Regular file
All fields: xesam:autoRating, xesam:comment, xesam:fileExtension, xesam:firstUsed, xesam:group, xesam:isEncrypted, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:owner, xesam:permissions, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Source, xesam:Filelike
Url
http://freedesktop.org/standards/xesam/1.0/core#Filelike
Parents
Children
xesam:File, xesam:RemoteFile, xesam:ArchivedFile, xesam:DeletedFile
Fields implied
xesam:fileExtension, xesam:group, xesam:owner, xesam:permissions
Description: File-like object
All fields: xesam:autoRating, xesam:comment, xesam:fileExtension, xesam:firstUsed, xesam:group, xesam:isEncrypted, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:owner, xesam:permissions, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Source, xesam:MessageboxMessage
Url
http://freedesktop.org/standards/xesam/1.0/core#MessageboxMessage
Parents
Children
Fields implied
Description: Generic messagebox message
All fields: xesam:autoRating, xesam:comment, xesam:firstUsed, xesam:isEncrypted, xesam:isImportant, xesam:isInProgress, xesam:isRead, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Source, xesam:OfflineMedia
Url
http://freedesktop.org/standards/xesam/1.0/core#OfflineMedia
Parents
Children
Fields implied
Description: Generic offline media. e.g. USB drive that is not attached at this momeny.
All fields: xesam:autoRating, xesam:comment, xesam:firstUsed, xesam:isEncrypted, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:seenAttachedAs, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Source, xesam:POP3Message
Url
http://freedesktop.org/standards/xesam/1.0/core#POP3Message
Parents
xesam:RemoteMessageboxMessage* < xesam:RemoteResource < xesam:Source < xesam:DataObject
Children
Fields implied
Description: POP3 mailbox message
All fields: xesam:autoRating, xesam:autoRating, xesam:comment, xesam:comment, xesam:firstUsed, xesam:firstUsed, xesam:isEncrypted, xesam:isEncrypted, xesam:isImportant, xesam:isInProgress, xesam:isRead, xesam:keyword, xesam:keyword, xesam:lastRefreshed, xesam:lastUsed, xesam:lastUsed, xesam:localRevision, xesam:localRevision, xesam:name, xesam:name, xesam:originURL, xesam:originURL, xesam:remotePassword, xesam:remotePort, xesam:remoteServer, xesam:remoteUser, xesam:sourceCreated, xesam:sourceCreated, xesam:sourceModified, xesam:sourceModified, xesam:storageSize, xesam:storageSize, xesam:url, xesam:url, xesam:useCount, xesam:useCount, xesam:userComment, xesam:userComment, xesam:userKeyword, xesam:userKeyword, xesam:userRating, xesam:userRating
Source, xesam:RemoteFile
Url
http://freedesktop.org/standards/xesam/1.0/core#RemoteFile
Parents
xesam:RemoteResource < xesam:Source < xesam:DataObject
xesam:Filelike < xesam:Source < xesam:DataObjectChildren
Fields implied
Description: Remote file
All fields: xesam:autoRating, xesam:autoRating, xesam:comment, xesam:comment, xesam:fileExtension, xesam:firstUsed, xesam:firstUsed, xesam:group, xesam:isEncrypted, xesam:isEncrypted, xesam:keyword, xesam:keyword, xesam:lastRefreshed, xesam:lastUsed, xesam:lastUsed, xesam:localRevision, xesam:localRevision, xesam:name, xesam:name, xesam:originURL, xesam:originURL, xesam:owner, xesam:permissions, xesam:remotePassword, xesam:remotePort, xesam:remoteServer, xesam:remoteUser, xesam:sourceCreated, xesam:sourceCreated, xesam:sourceModified, xesam:sourceModified, xesam:storageSize, xesam:storageSize, xesam:url, xesam:url, xesam:useCount, xesam:useCount, xesam:userComment, xesam:userComment, xesam:userKeyword, xesam:userKeyword, xesam:userRating, xesam:userRating
Source, xesam:RemoteMessageboxMessage
Url
http://freedesktop.org/standards/xesam/1.0/core#RemoteMessageboxMessage
Parents
xesam:RemoteResource < xesam:Source < xesam:DataObject
xesam:MessageboxMessage < xesam:Source < xesam:DataObjectChildren
Fields implied
Description: Remote messagebox message
All fields: xesam:autoRating, xesam:autoRating, xesam:comment, xesam:comment, xesam:firstUsed, xesam:firstUsed, xesam:isEncrypted, xesam:isEncrypted, xesam:isImportant, xesam:isInProgress, xesam:isRead, xesam:keyword, xesam:keyword, xesam:lastRefreshed, xesam:lastUsed, xesam:lastUsed, xesam:localRevision, xesam:localRevision, xesam:name, xesam:name, xesam:originURL, xesam:originURL, xesam:remotePassword, xesam:remotePort, xesam:remoteServer, xesam:remoteUser, xesam:sourceCreated, xesam:sourceCreated, xesam:sourceModified, xesam:sourceModified, xesam:storageSize, xesam:storageSize, xesam:url, xesam:url, xesam:useCount, xesam:useCount, xesam:userComment, xesam:userComment, xesam:userKeyword, xesam:userKeyword, xesam:userRating, xesam:userRating
Source, xesam:RemoteResource
Url
http://freedesktop.org/standards/xesam/1.0/core#RemoteResource
Parents
Children
Fields implied
xesam:lastRefreshed, xesam:remotePassword, xesam:remotePort, xesam:remoteServer, xesam:remoteUser
Description: Generic remote resource
All fields: xesam:autoRating, xesam:comment, xesam:firstUsed, xesam:isEncrypted, xesam:keyword, xesam:lastRefreshed, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:remotePassword, xesam:remotePort, xesam:remoteServer, xesam:remoteUser, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Source, xesam:Source
Url
http://freedesktop.org/standards/xesam/1.0/core#Source
Parents
Children
xesam:BlockDevice, xesam:Filelike, xesam:OfflineMedia, xesam:RemoteResource, xesam:EmbeddedObject, xesam:MessageboxMessage
Fields implied
xesam:autoRating, xesam:firstUsed, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Description: Generic source
All fields: xesam:autoRating, xesam:comment, xesam:firstUsed, xesam:isEncrypted, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Contents
Contents are defined in a hierarchial structure where each content type implies the listed fields as well as the fields implied by the parent content type.
Content, xesam:Annotation
Url
http://freedesktop.org/standards/xesam/1.0/core#Annotation
Parents
Children
xesam:Bookmark, xesam:Folder, xesam:Tag, xesam:Project, xesam:MediaList
Fields implied
Description: Generic annotation. Annotation provides a set of document description properties(like subject, title, description) for a list of objects it links to. It can link to other annotations, however interpretation of this may differ between specific annotation classes..
All fields: xesam:asText, xesam:author, xesam:charset, xesam:comment, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version
Content, xesam:Archive
Url
http://freedesktop.org/standards/xesam/1.0/core#Archive
Parents
Children
Fields implied
Description: Generic archive
All fields: xesam:asText, xesam:author, xesam:charset, xesam:comment, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:totalUncompressedSize, xesam:version
Content, xesam:Audio
Url
http://freedesktop.org/standards/xesam/1.0/core#Audio
Parents
Children
Fields implied
xesam:albumArtist, xesam:albumGain, xesam:albumPeakGain, xesam:albumTrackCount, xesam:artist, xesam:audioBPM, xesam:audioBirate, xesam:audioChannels, xesam:audioCodec, xesam:audioCodecType, xesam:audioSampleBitDepth, xesam:audioSampleCount, xesam:audioSampleDataType, xesam:audioSampleRate, xesam:composer, xesam:discNumber, xesam:lyricist, xesam:performer, xesam:trackGain, xesam:trackNumber, xesam:trackPeakGain
Description: Audio content
All fields: xesam:album, xesam:albumArtist, xesam:albumGain, xesam:albumPeakGain, xesam:albumTrackCount, xesam:artist, xesam:asText, xesam:audioBPM, xesam:audioBirate, xesam:audioChannels, xesam:audioCodec, xesam:audioCodecType, xesam:audioSampleBitDepth, xesam:audioSampleCount, xesam:audioSampleDataType, xesam:audioSampleRate, xesam:author, xesam:charset, xesam:comment, xesam:composer, xesam:compressionLevel, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:discNumber, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:genre, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:lyricist, xesam:maintainer, xesam:md5Hash, xesam:mediaBitrate, xesam:mediaCodec, xesam:mediaCodecType, xesam:mediaDuration, xesam:mimeType, xesam:performer, xesam:related, xesam:sampleBitDepth, xesam:sampleConfiguration, xesam:sampleDataType, xesam:setCount, xesam:setRate, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:targetQuality, xesam:title, xesam:trackGain, xesam:trackNumber, xesam:trackPeakGain, xesam:version
Content, xesam:AudioList
Url
http://freedesktop.org/standards/xesam/1.0/core#AudioList
Parents
xesam:MediaList < xesam:Annotation < xesam:Content < xesam:DataObject
Children
Fields implied
Description: Generic audio list(playlist). Linking to other content types is forbidden
All fields: xesam:asText, xesam:author, xesam:charset, xesam:comment, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version
Content, xesam:Bookmark
Url
http://freedesktop.org/standards/xesam/1.0/core#Bookmark
Parents
Children
Fields implied
Description: Bookmark. Currently there's nothing that would distinguish bookmarks and tags
All fields: xesam:asText, xesam:author, xesam:charset, xesam:comment, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version
Content, xesam:Contact
Url
http://freedesktop.org/standards/xesam/1.0/core#Contact
Parents
Children
Fields implied
xesam:birthDate, xesam:blogContactURL, xesam:cellPhoneNumber, xesam:contactMedium, xesam:contactName, xesam:contactNick, xesam:contactPhoto, xesam:contactURL, xesam:emailAddress, xesam:faxPhoneNumber, xesam:gender, xesam:homeEmailAddress, xesam:homePhoneNumber, xesam:homePostalAddress, xesam:homepageContactURL, xesam:imContactMedium, xesam:interests, xesam:jabberContactMedium, xesam:mailingPostalAddress, xesam:phoneNumber, xesam:physicalAddress, xesam:workEmailAddress, xesam:workPhoneNumber, xesam:workPostalAddress
Description: Contact
All fields: xesam:asText, xesam:author, xesam:birthDate, xesam:blogContactURL, xesam:cellPhoneNumber, xesam:charset, xesam:comment, xesam:contactMedium, xesam:contactName, xesam:contactNick, xesam:contactPhoto, xesam:contactURL, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:emailAddress, xesam:faxPhoneNumber, xesam:fingerprint, xesam:formatSubtype, xesam:gender, xesam:generator, xesam:generatorOptions, xesam:homeEmailAddress, xesam:homePhoneNumber, xesam:homePostalAddress, xesam:homepageContactURL, xesam:id, xesam:imContactMedium, xesam:interests, xesam:isContentEncrypted, xesam:isEncrypted, xesam:jabberContactMedium, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:mailingPostalAddress, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:phoneNumber, xesam:physicalAddress, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version, xesam:workEmailAddress, xesam:workPhoneNumber, xesam:workPostalAddress
Content, xesam:Content
Url
http://freedesktop.org/standards/xesam/1.0/core#Content
Parents
Children
xesam:FileSystem, xesam:Archive, xesam:Message, xesam:SoftwarePackage, xesam:Contact, xesam:Text, xesam:Media, xesam:Annotation
Fields implied
xesam:asText, xesam:author, xesam:charset, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version
Description: Generic content
All fields: xesam:asText, xesam:author, xesam:charset, xesam:comment, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version
Content, xesam:DataObject
Url
http://freedesktop.org/standards/xesam/1.0/core#DataObject
Parents
None
Children
Fields implied
Description: Generic data object. Unites form and essense aspects represented by Content and Source. Used to aggreate properties that may be extracted from both content and source.
All fields: xesam:comment, xesam:isEncrypted, xesam:keyword
Content, xesam:Document
Url
http://freedesktop.org/standards/xesam/1.0/core#Document
Parents
Children
xesam:TextDocument, xesam:Documentation, xesam:Spreadsheet, xesam:Presentation
Fields implied
xesam:documentCategory, xesam:pageCount, xesam:paragrapCount
Description: Document is an arrangement of various atomic data types with text being the primary data type.
All fields: xesam:asText, xesam:author, xesam:characterCount, xesam:charset, xesam:comment, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:documentCategory, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:lineCount, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:pageCount, xesam:paragrapCount, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version, xesam:wordCount
Content, xesam:Documentation
Url
http://freedesktop.org/standards/xesam/1.0/core#Documentation
Parents
xesam:Document < xesam:Text < xesam:Content < xesam:DataObject
Children
Fields implied
Description: Documentation is a document containing help, manuals, guides.
All fields: xesam:asText, xesam:author, xesam:characterCount, xesam:charset, xesam:comment, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:documentCategory, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:lineCount, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:pageCount, xesam:paragrapCount, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version, xesam:wordCount
Content, xesam:Email
Url
http://freedesktop.org/standards/xesam/1.0/core#Email
Parents
Children
xesam:PersonalEmail, xesam:NewsGroupEmail, xesam:MailingListEmail
Fields implied
xesam:bcc, xesam:cc, xesam:contentType, xesam:inReplyTo, xesam:replyTo, xesam:to
Description: Email message
All fields: xesam:asText, xesam:author, xesam:bcc, xesam:cc, xesam:charset, xesam:comment, xesam:communicationChannel, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contentType, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:inReplyTo, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:primaryRecipient, xesam:receptionTime, xesam:recipient, xesam:related, xesam:replyTo, xesam:secondaryRecipient, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:to, xesam:version
Content, xesam:EmailAttachment
Url
http://freedesktop.org/standards/xesam/1.0/core#EmailAttachment
Parents
Children
Fields implied
Description: Generic storage
All fields: xesam:attachmentEncoding, xesam:autoRating, xesam:comment, xesam:firstUsed, xesam:isEncrypted, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:sourceCreated, xesam:sourceModified, xesam:storageSize, xesam:url, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating
Content, xesam:FileSystem
Url
http://freedesktop.org/standards/xesam/1.0/core#FileSystem
Parents
Children
Fields implied
xesam:fileSystemType, xesam:freeSpace, xesam:mountPoint, xesam:occupiedSpace, xesam:totalSpace
Description: Filesystem differs from other containers in that it has total/free/occupied space(though DBs too have similar properties), has volume(content.title), UUID for *ix(content.ID), mount point(if mounted)
All fields: xesam:asText, xesam:author, xesam:charset, xesam:comment, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fileSystemType, xesam:fingerprint, xesam:formatSubtype, xesam:freeSpace, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:mountPoint, xesam:occupiedSpace, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:totalSpace, xesam:version
Content, xesam:Folder
Url
http://freedesktop.org/standards/xesam/1.0/core#Folder
Parents
Children
Fields implied
Description: Generic folder. In general, folders represent a tree-like structure(taxonomy), however on occasion this rule may violated in cases like symlinks.
All fields: xesam:asText, xesam:author, xesam:charset, xesam:comment, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version
Content, xesam:IMAP4Message
Url
http://freedesktop.org/standards/xesam/1.0/core#IMAP4Message
Parents
xesam:RemoteMessageboxMessage* < xesam:RemoteResource < xesam:Source < xesam:DataObject
Children
Fields implied
Description: IMAP4 mailbox message
All fields: xesam:autoRating, xesam:autoRating, xesam:comment, xesam:comment, xesam:firstUsed, xesam:firstUsed, xesam:isEncrypted, xesam:isEncrypted, xesam:isImportant, xesam:isInProgress, xesam:isRead, xesam:keyword, xesam:keyword, xesam:lastRefreshed, xesam:lastUsed, xesam:lastUsed, xesam:localRevision, xesam:localRevision, xesam:name, xesam:name, xesam:originURL, xesam:originURL, xesam:remotePassword, xesam:remotePort, xesam:remoteServer, xesam:remoteUser, xesam:sourceCreated, xesam:sourceCreated, xesam:sourceModified, xesam:sourceModified, xesam:storageSize, xesam:storageSize, xesam:url, xesam:url, xesam:useCount, xesam:useCount, xesam:userComment, xesam:userComment, xesam:userKeyword, xesam:userKeyword, xesam:userRating, xesam:userRating
Content, xesam:IMMessage
Url
http://freedesktop.org/standards/xesam/1.0/core#IMMessage
Parents
Children
Fields implied
Description: Generic Instant Messaging message
All fields: xesam:asText, xesam:author, xesam:charset, xesam:chatRoom, xesam:comment, xesam:communicationChannel, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:primaryRecipient, xesam:receptionTime, xesam:recipient, xesam:related, xesam:secondaryRecipient, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version
Content, xesam:Image
Url
http://freedesktop.org/standards/xesam/1.0/core#Image
Parents
xesam:Visual < xesam:Media < xesam:Content < xesam:DataObject
Children
Fields implied
Description: Visual content
All fields: xesam:album, xesam:asText, xesam:aspectRatio, xesam:author, xesam:charset, xesam:colorCount, xesam:colorSpace, xesam:comment, xesam:compressionLevel, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:frameCount, xesam:frameRate, xesam:generator, xesam:generatorOptions, xesam:genre, xesam:height, xesam:horizontalResolution, xesam:id, xesam:interlaceMode, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mediaBitrate, xesam:mediaCodec, xesam:mediaCodecType, xesam:mediaDuration, xesam:mimeType, xesam:pixelDataBitDepth, xesam:pixelDataType, xesam:related, xesam:sampleBitDepth, xesam:sampleConfiguration, xesam:sampleDataType, xesam:setCount, xesam:setRate, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:targetQuality, xesam:title, xesam:version, xesam:verticalResolution, xesam:width
Content, xesam:MailingListEmail
Url
http://freedesktop.org/standards/xesam/1.0/core#MailingListEmail
Parents
xesam:Email < xesam:Message < xesam:Content < xesam:DataObject
Children
Fields implied
Description: Email message addressed at/received from a mailing list
All fields: xesam:asText, xesam:author, xesam:bcc, xesam:cc, xesam:charset, xesam:comment, xesam:communicationChannel, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contentType, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:id, xesam:inReplyTo, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:mailingList, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:primaryRecipient, xesam:receptionTime, xesam:recipient, xesam:related, xesam:replyTo, xesam:secondaryRecipient, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:to, xesam:version
Content, xesam:Media
Url
http://freedesktop.org/standards/xesam/1.0/core#Media
Parents
Children
Fields implied
xesam:album, xesam:compressionLevel, xesam:genre, xesam:mediaBitrate, xesam:mediaCodec, xesam:mediaCodecType, xesam:mediaDuration, xesam:sampleBitDepth, xesam:sampleConfiguration, xesam:sampleDataType, xesam:setCount, xesam:setRate, xesam:targetQuality
Description: Generic raster/sampled media is considered consisting of Sets of Samples being reproduced(played/shown) at once. We describe: sample data type(int/float), data bit depth,configuration(color space for images, channel count for audio); set configuration(pixel dimensions for image); set count and rate.
All fields: xesam:album, xesam:asText, xesam:author, xesam:charset, xesam:comment, xesam:compressionLevel, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:depends, xesam:derivedFrom, xesam:description, xesam:disclaimer, xesam:fingerprint, xesam:formatSubtype, xesam:generator, xesam:generatorOptions, xesam:genre, xesam:id, xesam:isContentEncrypted, xesam:isEncrypted, xesam:keyword, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mediaBitrate, xesam:mediaCodec,


