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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	xesam:Filelike < xesam:Source < xesam:DataObject
  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	xesam:Source < xesam:DataObject
  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	xesam:Filelike < xesam:Source < xesam:DataObject
  Children
  Fields implied	xesam:deletionTime, xesam:originalLocation

  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	xesam:Source < xesam:DataObject
  Children	xesam:EmailAttachment
  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	xesam:Filelike < xesam:Source < xesam:DataObject
  Children	xesam:RevisionControlledFile
  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	xesam:Source < xesam:DataObject
  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	xesam:Source < xesam:DataObject
  Children	xesam:RemoteMessageboxMessage
  Fields implied	xesam:isImportant, xesam:isInProgress, xesam:isRead

  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	xesam:Source < xesam:DataObject
  Children
  Fields implied	xesam:seenAttachedAs

  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:DataObject
  Children
  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:DataObject
  Children	xesam:IMAP4Message, xesam:POP3Message
  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	xesam:Source < xesam:DataObject
  Children	xesam:RemoteMessageboxMessage, xesam:RemoteFile
  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	xesam:DataObject
  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	xesam:Content < xesam:DataObject
  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	xesam:Content < xesam:DataObject
  Children
  Fields implied	xesam:totalUncompressedSize

  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	xesam:Media < xesam:Content < xesam:DataObject
  Children	xesam:Video
  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	xesam:Annotation < xesam:Content < xesam:DataObject
  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	xesam:Content < xesam:DataObject
  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	xesam:DataObject
  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	xesam:Content, xesam:Source
  Fields implied	xesam:comment, xesam:isEncrypted, xesam:keyword

  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	xesam:Text < xesam:Content < xesam:DataObject
  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	xesam:Message < xesam:Content < xesam:DataObject
  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	xesam:EmbeddedObject < xesam:Source < xesam:DataObject
  Children
  Fields implied	xesam:attachmentEncoding

  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	xesam:Content < xesam:DataObject
  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	xesam:Annotation < xesam:Content < xesam:DataObject
  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	xesam:Message < xesam:Content < xesam:DataObject
  Children
  Fields implied	xesam:chatRoom

  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	xesam:Photo
  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	xesam:mailingList

  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	xesam:Content < xesam:DataObject
  Children	xesam:Audio, xesam:Visual
  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,