About the Xesam Ontology

Source and Content

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 content Document.

Categories and Fields

Source and Content are called categories. Categories deal with the abstract interpretation of an object. For example both an .odt and a .pdf file is a TextDocument even though the file formats are different. The Xesam ontology categorizes data in two ways - how it is stored (source) and what the data represents to the user (content).

A field is a named variable that contains information about an object. For example an Image has a height and a width field, and a TextDocument has a wordCount.

A category defines what fields make sense on an object belonging to it. These fields are not guaranteed to be set though. For example the Image content category defines that height and width (and others) makes sense on these types of objects, but wordCount does not make sense on an Image object.

Relations to Mime Types

By definition the mime type of a file (or more generally a stream) is strictly related to the format of the contents. Mime types live in a hierarchy defined by a sub-class-of-relation. This means that an SVG image file is both a text/xml and image/svg+xml. The Xesam ontology uses similar hierarchical grouping, the key difference is that the mime types do not define a generic Image mime type because it only deals with formats, the Xesam ontology on the other hand is primarily about the categorization of the file where a generic Image class makes perfect sense.

Read the Shared Mime Spec on freedesktop.org for more information about mime types.

Hierarchical Structure

Both fields and categories are linked in a hierarchical type system by a sub-class-of relation. This means that all items in the ontology can have multiple parent types as well as multiple children. Consider a photography stored in a .jpg on the harddisk. The content type is Photo, which is again an Image, and Image is more generally a Media object and so on. The source type is File which is more generally a Filelike object.

The same structure is imposed on fields. Consider the to: field of an email. It is more generally a primaryRecipent and even more abstractly just a recipent.

Searching Using the Xesam Ontology

If you are interacting with any Xesam search or metadata services it is important to know how the type hierarchy works in that context. The rule is simple; searching in a category or field will also match in any child of that category or field. The technical term applied to this functionality is query expansion. Here are two examples

• If you search for all objects with "Michael" in the recipent field, then objects with "Michael" in the primaryRecipent or to fields are also matched.

• Searching for all objects in the Visual category with a height of 128, will get you both Image, Photo, and Video objects with a height of 128.

Availabale Ontologies

The Xesam ontology as a whole is split in two (and in a special way three) sub-ontologies. The two ontologies are called Xesam Core and Xesam Convenience, besides these two there is a special collection of fields that does not apply to objects in general but only under special circumstances, these fields are defined in Xesam Virtual.

Xesam Core Ontology

This is a stable and generic ontology. It is intended to:

1. Implement a must-have field and category set which is most likely to be implemented by many Xesam services.
2. Provide "Mechanisms": Abstract structures and hooks for various use cases and functionality which will be provided by ontology extensions.

Examples of Mechanisms are: content relations, fingerprints, grouping, containers. This serves as guidelines for ontology extensions and helps to maintain a coherent and tightly coupled Core+Convenience+Extensions ontology, despite the unpredictable and ad-hoc nature of Extensions.

The important benefit is that applications aware of a particular Mechanism will be able to at least make some sense of all ontology extensions based on this Mechanism.

Xesam Convenience Ontology

The best way to describe this part of the ontology is "common extensions". Specifically:

1. Widely used and supported proprietary standards/formats/services. Including support for unpredictable and uncontrollable stuff into core is not wise.
2. Mappings to external ontologies/standards. Often there are several standards which overlap to a great degree. The overlap, the common part, goes to Core, and specifics go to Convenience. This way, Core implements the most important functionality, is not locked into any particular standard (along with apps using it), can be easily extended to support more standards.
3. User-friendly property names. Often it is desirable to provide alternate naming for properties like "title" for a specific content type or application area. While such renames are semantically irrelevant(don't convey any useful information), they may be more intuitive for users and software authors.
4. Potential additions to Xesam Core. Potential Core additions can be sandboxed and tested in Xesam Convenience.

Xesam Virtual Ontology

These fields are not real fields that can be expected to be treated like normal fields. A prime example is relevancyRating which only makes sense on an object given a query to do relevancy ranking against. Other notable virtual fields are contentCategory and sourceCategory - these can be specified as requested fields in the hit.fields session property of the Xesam Search Specification. The way to think about virtual fields is that they are not stored as ordinary fields but is somehow virtualized when requested in the right context. It is however up to the search engine how virtual fields are handled, some implementations might choose to treat them as first class fields, like any other.

Ids and Object Relations

Xesam employs a way to describe relations between objects that has been dubbed link-by-id. It is based on two core ideas.

Example Ids

An object may hold many ids. Fx. one may identify the person John Doe by either his blog URL http://blogs.example.com/~johndoe or his email address mailto:johndoe@example.com. This is allowed because the fields xesam:blogContactURL and xesam:homeEmailAddress are both children of xesam:id.

Another example is that you may identify a file by its URL file:///home/johndoe/readme.txt or its MD5 checksum urn:md5:3b3871169b88e8b54f7e98229b7746a9. Again because xesam:url and xesam:md5Hash both are children of xesam:id. Note that two copies of the same file will have the same md5sum. This still leaves xesam:md5Hash as a valid id since the files are considered the same.

Example Relations

Consider a contact in you address book who knows John Doe mentioned above. This can be expressed rigorously by setting the xesam:knows field of the contact to either John's blog URL or his email address. That is http://blogs.example.com/~johndoe and mailto:johndoe@example.com respectively. This constitutes a relation because xesam:knows is a child field of xesam:related.

Querying And Using Relations

To look up the object pointed to in a relation one may simply query the xesam:id field with an id of the object and the query expansion described above will make sure that that all relevant id-fields are queried. The requirement for conceptually identical items means that you can "collapse" all hits with identical ids into one if that makes sense in the application context.

Continuing the John Doe example from above one could look up the John Doe contact object by querying for either http://blogs.example.com/~johndoe or mailto:johndoe@example.com in the xesam:id field.

Caveat: If you want to query for all objects pointing to a given object A then you need to query in the xesam:related field with all different ids of A. This is not trivial to do with the Xesam Search Specification version 1.0, but may be addressed in later version of the standard. What one has to do is to read all child fields of xesam:id from A and then pass an OR-query with all the different ids in xesam:related.

Sources

Sources are defined in a hierarchial structure where each source category implies the listed fields as well as the fields implied by the parent source category.

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: File stored in an archive

  All fields: xesam:acl, 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:storedSize, xesam:url, xesam:urlHint, 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:storedSize, xesam:url, xesam:urlHint, 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:acl, 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:storedSize, xesam:url, xesam:urlHint, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating

Source, 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:storedSize, xesam:url, xesam:urlHint, 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:storedSize, xesam:url, xesam:urlHint, 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 stored in a filesystem

  All fields: xesam:acl, 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:storedSize, xesam:url, xesam:urlHint, 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:acl, xesam:fileExtension, xesam:group, xesam:owner, xesam:permissions

• Description: File-like object

  All fields: xesam:acl, 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:storedSize, xesam:url, xesam:urlHint, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating

Source, 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:storedSize, xesam:storedSize, xesam:url, xesam:url, xesam:urlHint, xesam:urlHint, xesam:useCount, xesam:useCount, xesam:userComment, xesam:userComment, xesam:userKeyword, xesam:userKeyword, xesam:userRating, 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: Message stored in a message box

  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:storedSize, xesam:url, xesam:urlHint, 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 not attached at this moment.

  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:storedSize, xesam:url, xesam:urlHint, 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:storedSize, xesam:storedSize, xesam:url, xesam:url, xesam:urlHint, xesam:urlHint, 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:acl, 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:storedSize, xesam:storedSize, xesam:url, xesam:url, xesam:urlHint, xesam:urlHint, 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:storedSize, xesam:storedSize, xesam:url, xesam:url, xesam:urlHint, xesam:urlHint, 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:storedSize, xesam:url, xesam:urlHint, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating

Source, xesam:RevisionControlledFile

             Url: http://freedesktop.org/standards/xesam/1.0/core#RevisionControlledFile

         Parents: xesam:File < xesam:Filelike < xesam:Source < xesam:DataObject

        Children: 

  Fields implied: xesam:baseRevisionID, xesam:changeCommitTime, xesam:changeCommitter, xesam:commitDiff, xesam:mergeConflict

• Description: File managed by a revision control system

  All fields: xesam:acl, xesam:autoRating, xesam:baseRevisionID, xesam:changeCommitTime, xesam:changeCommitter, xesam:comment, xesam:commitDiff, xesam:fileExtension, xesam:firstUsed, xesam:group, xesam:isEncrypted, xesam:keyword, xesam:lastUsed, xesam:localRevision, xesam:mergeConflict, xesam:name, xesam:originURL, xesam:owner, xesam:permissions, xesam:sourceCreated, xesam:sourceModified, xesam:storedSize, xesam:url, xesam:urlHint, 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:SystemResource, xesam:EmbeddedObject, xesam:MessageboxMessage

  Fields implied: xesam:autoRating, xesam:firstUsed, xesam:lastUsed, xesam:localRevision, xesam:name, xesam:originURL, xesam:sourceCreated, xesam:sourceModified, xesam:storedSize, xesam:url, xesam:urlHint, 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:storedSize, xesam:url, xesam:urlHint, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating

Source, xesam:SystemResource

             Url: http://freedesktop.org/standards/xesam/1.0/core#SystemResource

         Parents: xesam:Source < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Generic system resource like man documentation

  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:storedSize, xesam:url, xesam:urlHint, xesam:useCount, xesam:userComment, xesam:userKeyword, xesam:userRating

Contents

Contents are defined in a hierarchial structure where each content category implies the listed fields as well as the fields implied by the parent content category.

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, xesam:Music

  Fields implied: xesam:albumArtist, xesam:albumGain, xesam:albumPeakGain, xesam:albumTrackCount, xesam:artist, xesam:audioBPM, xesam:audioBitrate, 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: Defines audio aspect of content. The content itself may have other aspects.

  All fields: xesam:album, xesam:albumArtist, xesam:albumGain, xesam:albumPeakGain, xesam:albumTrackCount, xesam:artist, xesam:asText, xesam:audioBPM, xesam:audioBitrate, 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:CommunicationChannel

             Url: http://freedesktop.org/standards/xesam/1.0/core#CommunicationChannel

         Parents: xesam:Content < xesam:DataObject

        Children: xesam:NewsGroup, xesam:MailingList, xesam:RSSFeed

  Fields implied: xesam:isPublicChannel

• Description: Communication channel

  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:isPublicChannel, 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: xesam:Organization, xesam:Person

  Fields implied: xesam:blogContactURL, xesam:cellPhoneNumber, xesam:contactMedium, xesam:contactNick, xesam:contactURL, xesam:emailAddress, xesam:faxPhoneNumber, xesam:homepageContactURL, xesam:imContactMedium, xesam:interest, xesam:ircContactMedium, xesam:jabberContactMedium, xesam:knows, xesam:mailingPostalAddress, xesam:phoneNumber, xesam:physicalAddress

• Description: Contact

  All fields: xesam:asText, xesam:author, xesam:blogContactURL, xesam:cellPhoneNumber, xesam:charset, xesam:comment, xesam:contactMedium, xesam:contactNick, 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:generator, xesam:generatorOptions, xesam:homepageContactURL, xesam:id, xesam:imContactMedium, xesam:interest, xesam:ircContactMedium, xesam:isContentEncrypted, xesam:isEncrypted, xesam:jabberContactMedium, xesam:keyword, xesam:knows, 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

Content, xesam:ContactGroup

             Url: http://freedesktop.org/standards/xesam/1.0/core#ContactGroup

         Parents: xesam:Content < xesam:DataObject

        Children: xesam:MailingList

  Fields implied: 

• Description: ContactGroup

  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:Content

             Url: http://freedesktop.org/standards/xesam/1.0/core#Content

         Parents: xesam:DataObject

        Children: xesam:FileSystem, xesam:CommunicationChannel, xesam:Message, xesam:SoftwarePackage, xesam:Archive, xesam:Contact, xesam:RevisionControlledRepository, xesam:Text, xesam:ContactGroup, 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: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:paragraphCount

• 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:paragraphCount, 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:paragraphCount, 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: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 be 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: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:MailingList

             Url: http://freedesktop.org/standards/xesam/1.0/core#MailingList

         Parents: xesam:ContactGroup < xesam:Content < xesam:DataObject
xesam:CommunicationChannel < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Mailing list

  All fields: xesam:asText, xesam:asText, xesam:author, xesam:author, xesam:charset, xesam:charset, xesam:comment, xesam:comment, xesam:contains, xesam:contains, xesam:contentComment, xesam:contentComment, xesam:contentCreated, xesam:contentCreated, xesam:contentKeyword, xesam:contentKeyword, xesam:contentModified, xesam:contentModified, xesam:contributor, xesam:contributor, xesam:copyright, xesam:copyright, xesam:creator, xesam:creator, xesam:depends, xesam:depends, xesam:derivedFrom, xesam:derivedFrom, xesam:description, xesam:description, xesam:disclaimer, xesam:disclaimer, xesam:fingerprint, xesam:fingerprint, xesam:formatSubtype, xesam:formatSubtype, xesam:generator, xesam:generator, xesam:generatorOptions, xesam:generatorOptions, xesam:id, xesam:id, xesam:isContentEncrypted, xesam:isContentEncrypted, xesam:isEncrypted, xesam:isEncrypted, xesam:isPublicChannel, xesam:keyword, xesam:keyword, xesam:language, xesam:language, xesam:legal, xesam:legal, xesam:license, xesam:license, xesam:licenseType, xesam:licenseType, xesam:links, xesam:links, xesam:maintainer, xesam:maintainer, xesam:md5Hash, xesam:md5Hash, xesam:mimeType, xesam:mimeType, xesam:related, xesam:related, xesam:sha1Hash, xesam:sha1Hash, xesam:size, xesam:size, xesam:subject, xesam:subject, xesam:summary, xesam:summary, xesam:title, xesam:title, xesam:version, xesam:version

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, xesam:mediaCodecType, xesam:mediaDuration, xesam:mimeType, 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

Content, xesam:MediaList

             Url: http://freedesktop.org/standards/xesam/1.0/core#MediaList

         Parents: xesam:Annotation < xesam:Content < xesam:DataObject

        Children: xesam:AudioList

  Fields implied: 

• Description: Generic media content 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:Message

             Url: http://freedesktop.org/standards/xesam/1.0/core#Message

         Parents: xesam:Content < xesam:DataObject

        Children: xesam:IMMessage, xesam:RSSMessage, xesam:Email

  Fields implied: xesam:communicationChannel, xesam:primaryRecipient, xesam:receptionTime, xesam:recipient, xesam:secondaryRecipient

• Description: Generic message

  All fields: xesam:asText, xesam:author, xesam:charset, 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:Music

             Url: http://freedesktop.org/standards/xesam/1.0/core#Music

         Parents: xesam:Audio < xesam:Media < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Music content

  All fields: xesam:album, xesam:albumArtist, xesam:albumGain, xesam:albumPeakGain, xesam:albumTrackCount, xesam:artist, xesam:asText, xesam:audioBPM, xesam:audioBitrate, 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:NewsGroup

             Url: http://freedesktop.org/standards/xesam/1.0/core#NewsGroup

         Parents: xesam:CommunicationChannel < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: News group

  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:isPublicChannel, 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:NewsGroupEmail

             Url: http://freedesktop.org/standards/xesam/1.0/core#NewsGroupEmail

         Parents: xesam:Email < xesam:Message < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: xesam:newsGroup

• Description: Email message addressed at/received from a news group

  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:newsGroup, 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:Organization

             Url: http://freedesktop.org/standards/xesam/1.0/core#Organization

         Parents: xesam:Contact < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Organization

  All fields: xesam:asText, xesam:author, xesam:blogContactURL, xesam:cellPhoneNumber, xesam:charset, xesam:comment, xesam:contactMedium, xesam:contactNick, 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:generator, xesam:generatorOptions, xesam:homepageContactURL, xesam:id, xesam:imContactMedium, xesam:interest, xesam:ircContactMedium, xesam:isContentEncrypted, xesam:isEncrypted, xesam:jabberContactMedium, xesam:keyword, xesam:knows, 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

Content, xesam:Person

             Url: http://freedesktop.org/standards/xesam/1.0/core#Person

         Parents: xesam:Contact < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: xesam:birthDate, xesam:familyName, xesam:gender, xesam:givenName, xesam:homeEmailAddress, xesam:homePhoneNumber, xesam:homePostalAddress, xesam:honorificPrefix, xesam:honorificSuffix, xesam:otherName, xesam:personPhoto, xesam:workEmailAddress, xesam:workPhoneNumber, xesam:workPostalAddress

• Description: Person

  All fields: xesam:asText, xesam:author, xesam:birthDate, xesam:blogContactURL, xesam:cellPhoneNumber, xesam:charset, xesam:comment, xesam:contactMedium, xesam:contactNick, 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:familyName, xesam:faxPhoneNumber, xesam:fingerprint, xesam:formatSubtype, xesam:gender, xesam:generator, xesam:generatorOptions, xesam:givenName, xesam:homeEmailAddress, xesam:homePhoneNumber, xesam:homePostalAddress, xesam:homepageContactURL, xesam:honorificPrefix, xesam:honorificSuffix, xesam:id, xesam:imContactMedium, xesam:interest, xesam:ircContactMedium, xesam:isContentEncrypted, xesam:isEncrypted, xesam:jabberContactMedium, xesam:keyword, xesam:knows, xesam:language, xesam:legal, xesam:license, xesam:licenseType, xesam:links, xesam:mailingPostalAddress, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:otherName, xesam:personPhoto, 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:PersonalEmail

             Url: http://freedesktop.org/standards/xesam/1.0/core#PersonalEmail

         Parents: xesam:Email < xesam:Message < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Personal email message (not related to a mailing list or discussion group)

  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:Photo

             Url: http://freedesktop.org/standards/xesam/1.0/core#Photo

         Parents: xesam:Image < xesam:Visual < xesam:Media < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: xesam:35mmEquivalent, xesam:aperture, xesam:cameraManufacturer, xesam:cameraModel, xesam:ccdWidth, xesam:exposureBias, xesam:exposureProgram, xesam:exposureTime, xesam:flashUsed, xesam:focalLength, xesam:focusDistance, xesam:isoEquivalent, xesam:meteringMode, xesam:orientation, xesam:whiteBalance

• Description: An image with EXIF tags (photo)

  All fields: xesam:35mmEquivalent, xesam:album, xesam:aperture, xesam:asText, xesam:aspectRatio, xesam:author, xesam:cameraManufacturer, xesam:cameraModel, xesam:ccdWidth, 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:exposureBias, xesam:exposureProgram, xesam:exposureTime, xesam:fingerprint, xesam:flashUsed, xesam:focalLength, xesam:focusDistance, 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:isoEquivalent, 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:meteringMode, xesam:mimeType, xesam:orientation, 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:whiteBalance, xesam:width

Content, xesam:Presentation

             Url: http://freedesktop.org/standards/xesam/1.0/core#Presentation

         Parents: xesam:Document < xesam:Text < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Presentation document

  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:paragraphCount, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version, xesam:wordCount

Content, xesam:Project

             Url: http://freedesktop.org/standards/xesam/1.0/core#Project

         Parents: xesam:Annotation < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Generic project

  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:RSSFeed

             Url: http://freedesktop.org/standards/xesam/1.0/core#RSSFeed

         Parents: xesam:CommunicationChannel < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: RSS feed

  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:isPublicChannel, 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:RSSMessage

             Url: http://freedesktop.org/standards/xesam/1.0/core#RSSMessage

         Parents: xesam:Message < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: xesam:rssFeed

• Description: RSS message (RSS feed item)

  All fields: xesam:asText, xesam:author, xesam:charset, 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:rssFeed, xesam:secondaryRecipient, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version

Content, xesam:RevisionControlledRepository

             Url: http://freedesktop.org/standards/xesam/1.0/core#RevisionControlledRepository

         Parents: xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Revision-controlled repository. In case of distributed repositories, those must be linked with derivation relations.

  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:SoftwarePackage

             Url: http://freedesktop.org/standards/xesam/1.0/core#SoftwarePackage

         Parents: xesam:Content < xesam:DataObject

        Children: 

  Fields implied: xesam:conflicts, xesam:supercedes

• Description: Software distribution package

  All fields: xesam:asText, xesam:author, xesam:charset, xesam:comment, xesam:conflicts, 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:supercedes, xesam:title, xesam:version

Content, xesam:SourceCode

             Url: http://freedesktop.org/standards/xesam/1.0/core#SourceCode

         Parents: xesam:Text < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: xesam:commentCharacterCount, xesam:definesClass, xesam:definesFunction, xesam:definesGlobalVariable, xesam:programmingLanguage

• Description: Source code

  All fields: xesam:asText, xesam:author, xesam:characterCount, xesam:charset, xesam:comment, xesam:commentCharacterCount, xesam:contains, xesam:contentComment, xesam:contentCreated, xesam:contentKeyword, xesam:contentModified, xesam:contributor, xesam:copyright, xesam:creator, xesam:definesClass, xesam:definesFunction, xesam:definesGlobalVariable, 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:lineCount, xesam:links, xesam:maintainer, xesam:md5Hash, xesam:mimeType, xesam:programmingLanguage, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version, xesam:wordCount

Content, xesam:Spreadsheet

             Url: http://freedesktop.org/standards/xesam/1.0/core#Spreadsheet

         Parents: xesam:Document < xesam:Text < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: xesam:columnCount, xesam:rowCount

• Description: Spreadsheet document

  All fields: xesam:asText, xesam:author, xesam:characterCount, xesam:charset, xesam:columnCount, 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:paragraphCount, xesam:related, xesam:rowCount, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version, xesam:wordCount

Content, xesam:Tag

             Url: http://freedesktop.org/standards/xesam/1.0/core#Tag

         Parents: xesam:Annotation < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Tag/keyword. As opposed to folders, there are no limitations on the structure of tags and arbitrary overlaps are possible.

  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:Text

             Url: http://freedesktop.org/standards/xesam/1.0/core#Text

         Parents: xesam:Content < xesam:DataObject

        Children: xesam:SourceCode, xesam:Document, xesam:UncategorizedText, xesam:XML

  Fields implied: xesam:characterCount, xesam:lineCount, xesam:wordCount

• Description: Defines a textual aspect of content. Properties represent only actual content intended for the user, not markup. Other parts of content like markup should be described using other classes

  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: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:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version, xesam:wordCount

Content, xesam:TextDocument

             Url: http://freedesktop.org/standards/xesam/1.0/core#TextDocument

         Parents: xesam:Document < xesam:Text < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Text document. For word processing apps.

  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:paragraphCount, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version, xesam:wordCount

Content, xesam:UncategorizedText

             Url: http://freedesktop.org/standards/xesam/1.0/core#UncategorizedText

         Parents: xesam:Text < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: 

• Description: Text content which doesn't fit any other text-based classes. Corresponds to Tracker's Text category.

  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: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:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:version, xesam:wordCount

Content, xesam:Video

             Url: http://freedesktop.org/standards/xesam/1.0/core#Video

         Parents: xesam:Audio < xesam:Media < xesam:Content < xesam:DataObject
xesam:Visual < xesam:Media < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: xesam:videoBitrate, xesam:videoCodec, xesam:videoCodecType

• Description: Video content

  All fields: xesam:album, xesam:album, xesam:albumArtist, xesam:albumGain, xesam:albumPeakGain, xesam:albumTrackCount, xesam:artist, xesam:asText, xesam:asText, xesam:aspectRatio, xesam:audioBPM, xesam:audioBitrate, xesam:audioChannels, xesam:audioCodec, xesam:audioCodecType, xesam:audioSampleBitDepth, xesam:audioSampleCount, xesam:audioSampleDataType, xesam:audioSampleRate, xesam:author, xesam:author, xesam:charset, xesam:charset, xesam:colorCount, xesam:colorSpace, xesam:comment, xesam:comment, xesam:composer, xesam:compressionLevel, xesam:compressionLevel, xesam:contains, xesam:contains, xesam:contentComment, xesam:contentComment, xesam:contentCreated, xesam:contentCreated, xesam:contentKeyword, xesam:contentKeyword, xesam:contentModified, xesam:contentModified, xesam:contributor, xesam:contributor, xesam:copyright, xesam:copyright, xesam:creator, xesam:creator, xesam:depends, xesam:depends, xesam:derivedFrom, xesam:derivedFrom, xesam:description, xesam:description, xesam:discNumber, xesam:disclaimer, xesam:disclaimer, xesam:fingerprint, xesam:fingerprint, xesam:formatSubtype, xesam:formatSubtype, xesam:frameCount, xesam:frameRate, xesam:generator, xesam:generator, xesam:generatorOptions, xesam:generatorOptions, xesam:genre, xesam:genre, xesam:height, xesam:horizontalResolution, xesam:id, xesam:id, xesam:interlaceMode, xesam:isContentEncrypted, xesam:isContentEncrypted, xesam:isEncrypted, xesam:isEncrypted, xesam:keyword, xesam:keyword, xesam:language, xesam:language, xesam:legal, xesam:legal, xesam:license, xesam:license, xesam:licenseType, xesam:licenseType, xesam:links, xesam:links, xesam:lyricist, xesam:maintainer, xesam:maintainer, xesam:md5Hash, xesam:md5Hash, xesam:mediaBitrate, xesam:mediaBitrate, xesam:mediaCodec, xesam:mediaCodec, xesam:mediaCodecType, xesam:mediaCodecType, xesam:mediaDuration, xesam:mediaDuration, xesam:mimeType, xesam:mimeType, xesam:performer, xesam:pixelDataBitDepth, xesam:pixelDataType, xesam:related, xesam:related, xesam:sampleBitDepth, xesam:sampleBitDepth, xesam:sampleConfiguration, xesam:sampleConfiguration, xesam:sampleDataType, xesam:sampleDataType, xesam:setCount, xesam:setCount, xesam:setRate, xesam:setRate, xesam:sha1Hash, xesam:sha1Hash, xesam:size, xesam:size, xesam:subject, xesam:subject, xesam:summary, xesam:summary, xesam:targetQuality, xesam:targetQuality, xesam:title, xesam:title, xesam:trackGain, xesam:trackNumber, xesam:trackPeakGain, xesam:version, xesam:version, xesam:verticalResolution, xesam:videoBitrate, xesam:videoCodec, xesam:videoCodecType, xesam:width

Content, xesam:Visual

             Url: http://freedesktop.org/standards/xesam/1.0/core#Visual

         Parents: xesam:Media < xesam:Content < xesam:DataObject

        Children: xesam:Image, xesam:Video

  Fields implied: xesam:aspectRatio, xesam:colorCount, xesam:colorSpace, xesam:frameCount, xesam:frameRate, xesam:height, xesam:horizontalResolution, xesam:interlaceMode, xesam:pixelDataBitDepth, xesam:pixelDataType, xesam:verticalResolution, xesam:width

• 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:XML

             Url: http://freedesktop.org/standards/xesam/1.0/core#XML

         Parents: xesam:Text < xesam:Content < xesam:DataObject

        Children: 

  Fields implied: xesam:markupCharacterCount, xesam:usesNamespace

• Description: XML content

  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: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:markupCharacterCount, xesam:md5Hash, xesam:mimeType, xesam:related, xesam:sha1Hash, xesam:size, xesam:subject, xesam:summary, xesam:title, xesam:usesNamespace, xesam:version, xesam:wordCount

Fields

Field, xesam:35mmEquivalent

   Data type: float

         Url: http://freedesktop.org/standards/xesam/1.0/core#35mmEquivalent

      Parent: None

    Children: 

  Belongs to: xesam:Photo

• Description: Photo metering mode

Field, xesam:acl

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#acl

      Parent: None

    Children: 

  Belongs to: xesam:Filelike

• Description: File access control list

Field, xesam:album

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#album

      Parent: None

    Children: 

  Belongs to: xesam:Media

• Description: Media album

Field, xesam:albumArtist

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#albumArtist

      Parent: xesam:author < xesam:creator

    Children: 

  Belongs to: xesam:Audio

• Description: Music album artist

Field, xesam:albumGain

   Data type: float

         Url: http://freedesktop.org/standards/xesam/1.0/core#albumGain

      Parent: None

    Children: 

  Belongs to: xesam:Audio

• Description: Gain adjustment of album

Field, xesam:albumPeakGain

   Data type: float

         Url: http://freedesktop.org/standards/xesam/1.0/core#albumPeakGain

      Parent: None

    Children: 

  Belongs to: xesam:Audio

• Description: Peak gain adjustment of album

Field, xesam:albumTrackCount

   Data type: integer

         Url: http://freedesktop.org/standards/xesam/1.0/core#albumTrackCount

      Parent: None

    Children: 

  Belongs to: xesam:Audio

• Description: Album track count

Field, xesam:aperture

   Data type: float

         Url: http://freedesktop.org/standards/xesam/1.0/core#aperture

      Parent: None

    Children: 

  Belongs to: xesam:Photo

• Description: Photo aperture

Field, xesam:artist

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#artist

      Parent: xesam:author < xesam:creator

    Children: 

  Belongs to: xesam:Audio

• Description: Music artist

Field, xesam:asText

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#asText

      Parent: None

    Children: 

  Belongs to: xesam:Content

• Description: Content plain-text representation for indexing purposes

Field, xesam:aspectRatio

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#aspectRatio

      Parent: None

    Children: 

  Belongs to: xesam:Visual

• Description: Visual content aspect ratio

Field, xesam:attachmentEncoding

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#attachmentEncoding

      Parent: None

    Children: 

  Belongs to: xesam:EmailAttachment

• Description: Email attachment encoding (base64,utf-7, etc)

Field, xesam:audioBPM

   Data type: integer

         Url: http://freedesktop.org/standards/xesam/1.0/core#audioBPM

      Parent: None

    Children: 

  Belongs to: xesam:Audio

• Description: Beats per minute

Field, xesam:audioBitrate

   Data type: integer

         Url: http://freedesktop.org/standards/xesam/1.0/core#audioBitrate

      Parent: xesam:mediaBitrate

    Children: 

  Belongs to: xesam:Audio

• Description: Audio Bitrate

Field, xesam:audioChannels

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#audioChannels

      Parent: xesam:sampleConfiguration

    Children: 

  Belongs to: xesam:Audio

• Description: Audio channels

Field, xesam:audioCodec

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#audioCodec

      Parent: xesam:mediaCodec

    Children: 

  Belongs to: xesam:Audio

• Description: Audio codec

Field, xesam:audioCodecType

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#audioCodecType

      Parent: xesam:mediaCodecType

    Children: 

  Belongs to: xesam:Audio

• Description: Audio codec type

Field, xesam:audioSampleBitDepth

   Data type: integer

         Url: http://freedesktop.org/standards/xesam/1.0/core#audioSampleBitDepth

      Parent: xesam:sampleBitDepth

    Children: 

  Belongs to: xesam:Audio

• Description: Audio sample data bit depth

Field, xesam:audioSampleCount

   Data type: integer

         Url: http://freedesktop.org/standards/xesam/1.0/core#audioSampleCount

      Parent: xesam:setCount

    Children: 

  Belongs to: xesam:Audio

• Description: Audio sample count

Field, xesam:audioSampleDataType

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#audioSampleDataType

      Parent: xesam:sampleDataType

    Children: 

  Belongs to: xesam:Audio

• Description: Audio sample data type

Field, xesam:audioSampleRate

   Data type: float

         Url: http://freedesktop.org/standards/xesam/1.0/core#audioSampleRate

      Parent: xesam:setRate

    Children: 

  Belongs to: xesam:Audio

• Description: Audio sample rate

Field, xesam:author

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#author

      Parent: xesam:creator

    Children: xesam:performer, xesam:artist, xesam:composer, xesam:albumArtist, xesam:lyricist

  Belongs to: xesam:Content

• Description: Content author(s). Primary contributor(s).

Field, xesam:autoRating

   Data type: float

         Url: http://freedesktop.org/standards/xesam/1.0/core#autoRating

      Parent: None

    Children: 

  Belongs to: xesam:Source

• Description: Rating of the object provided automatically by software, inferred from user behavior or other indirect indicators.

Field, xesam:baseRevisionID

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#baseRevisionID

      Parent: None

    Children: 

  Belongs to: xesam:RevisionControlledFile

• Description: RevisionID on which a revision-controlled file is based

Field, xesam:bcc

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#bcc

      Parent: xesam:secondaryRecipient < xesam:recipient

    Children: 

  Belongs to: xesam:Email

• Description: BCC:

Field, xesam:birthDate

   Data type: dateTime

         Url: http://freedesktop.org/standards/xesam/1.0/core#birthDate

      Parent: None

    Children: 

  Belongs to: xesam:Person

• Description: Contact birthDate

Field, xesam:blogContactURL

   Data type: List of Urls

         Url: http://freedesktop.org/standards/xesam/1.0/core#blogContactURL

      Parent: xesam:contactURL* < xesam:id

    Children: 

  Belongs to: xesam:Contact

• Description: Contact blog URL. Please see xesam:contactURL for formatting details

Field, xesam:cameraManufacturer

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#cameraManufacturer

      Parent: None

    Children: 

  Belongs to: xesam:Photo

• Description: Photo camera manufacturer

Field, xesam:cameraModel

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#cameraModel

      Parent: None

    Children: 

  Belongs to: xesam:Photo

• Description: Photo camera model

Field, xesam:cc

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#cc

      Parent: xesam:secondaryRecipient < xesam:recipient

    Children: 

  Belongs to: xesam:Email

• Description: CC:

Field, xesam:ccdWidth

   Data type: float

         Url: http://freedesktop.org/standards/xesam/1.0/core#ccdWidth

      Parent: None

    Children: 

  Belongs to: xesam:Photo

• Description: Photo CCD Width

Field, xesam:cellPhoneNumber

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#cellPhoneNumber

      Parent: xesam:phoneNumber* < xesam:id

    Children: 

  Belongs to: xesam:Contact

• Description: Contact cell phone number. Please see xesam:phoneNumber for formatting details

Field, xesam:changeCommitTime

   Data type: dateTime

         Url: http://freedesktop.org/standards/xesam/1.0/core#changeCommitTime

      Parent: None

    Children: 

  Belongs to: xesam:RevisionControlledFile

• Description: Time of the last change to the base file in the repository (preceding the baseRevisionID?)

Field, xesam:changeCommitter

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#changeCommitter

      Parent: None

    Children: 

  Belongs to: xesam:RevisionControlledFile

• Description: Who made the last change to the base file in the repository (preceding the baseRevisionID?)

Field, xesam:characterCount

   Data type: integer

         Url: http://freedesktop.org/standards/xesam/1.0/core#characterCount

      Parent: None

    Children: 

  Belongs to: xesam:Text

• Description: Text character count

Field, xesam:charset

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#charset

      Parent: None

    Children: 

  Belongs to: xesam:Content

• Description: Content charset encoding

Field, xesam:chatRoom

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#chatRoom

      Parent: xesam:communicationChannel

    Children: 

  Belongs to: xesam:IMMessage

• Description: Chatroom this message belongs to

Field, xesam:colorCount

   Data type: integer

         Url: http://freedesktop.org/standards/xesam/1.0/core#colorCount

      Parent: None

    Children: 

  Belongs to: xesam:Visual

• Description: Visual content color count for palettes

Field, xesam:colorSpace

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#colorSpace

      Parent: xesam:sampleConfiguration

    Children: 

  Belongs to: xesam:Visual

• Description: Visual content color space (RGB, CMYK etc)

Field, xesam:columnCount

   Data type: integer

         Url: http://freedesktop.org/standards/xesam/1.0/core#columnCount

      Parent: None

    Children: 

  Belongs to: xesam:Spreadsheet

• Description: Spreadsheet column count

Field, xesam:comment

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#comment

      Parent: None

    Children: xesam:userComment, xesam:contentComment

  Belongs to: xesam:DataObject

• Description: Object comment

Field, xesam:commentCharacterCount

   Data type: integer

         Url: http://freedesktop.org/standards/xesam/1.0/core#commentCharacterCount

      Parent: None

    Children: 

  Belongs to: xesam:SourceCode

• Description: Source code comment character count

Field, xesam:commitDiff

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#commitDiff

      Parent: None

    Children: 

  Belongs to: xesam:RevisionControlledFile

• Description: The diff of the content and the base file

Field, xesam:communicationChannel

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#communicationChannel

      Parent: None

    Children: xesam:rssFeed, xesam:mailingList, xesam:chatRoom, xesam:newsGroup

  Belongs to: xesam:Message

• Description: Message communication channel like chatroom name or mailing list

Field, xesam:composer

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#composer

      Parent: xesam:author < xesam:creator

    Children: 

  Belongs to: xesam:Audio

• Description: Music composer

Field, xesam:compressionAlgorithm

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#compressionAlgorithm

      Parent: None

    Children: 

  Belongs to: xesam:ArchivedFile

• Description: Compression algorithm for archivers which support several ones

Field, xesam:compressionLevel

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#compressionLevel

      Parent: None

    Children: 

  Belongs to: xesam:ArchivedFile, xesam:Media

• Description: Level of compression. How much effort was spent towards achieving maximal compression ratio.

Field, xesam:conflicts

   Data type: List of Uris

         Url: http://freedesktop.org/standards/xesam/1.0/core#conflicts

      Parent: xesam:related

    Children: 

  Belongs to: xesam:SoftwarePackage

• Description: Software conflicts with

Field, xesam:contactMedium

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#contactMedium

      Parent: None

    Children: xesam:physicalAddress, xesam:phoneNumber, xesam:contactURL, xesam:imContactMedium, xesam:emailAddress

  Belongs to: xesam:Contact

• Description: Generic contact medium, ie. a means to contact the individual or organization in question

Field, xesam:contactNick

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#contactNick

      Parent: None

    Children: 

  Belongs to: xesam:Contact

• Description: Contact nick

Field, xesam:contactURL

   Data type: List of Urls

         Url: http://freedesktop.org/standards/xesam/1.0/core#contactURL

      Parent: xesam:id
xesam:contactMedium

    Children: xesam:blogContactURL, xesam:homepageContactURL

  Belongs to: xesam:Contact

• Description: Contact URL. The URL must include the URI scheme, like http://example.com, not just the server address example.com

Field, xesam:contains

   Data type: List of Uris

         Url: http://freedesktop.org/standards/xesam/1.0/core#contains

      Parent: xesam:depends < xesam:related

    Children: 

  Belongs to: xesam:Content

• Description: Containment relation

Field, xesam:contentComment

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#contentComment

      Parent: xesam:comment

    Children: 

  Belongs to: xesam:Content

• Description: Content comment

Field, xesam:contentCreated

   Data type: dateTime

         Url: http://freedesktop.org/standards/xesam/1.0/core#contentCreated

      Parent: None

    Children: 

  Belongs to: xesam:Content

• Description: Content creation time

Field, xesam:contentKeyword

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#contentKeyword

      Parent: xesam:keyword

    Children: 

  Belongs to: xesam:Content

• Description: Content keyword/tag

Field, xesam:contentModified

   Data type: dateTime

         Url: http://freedesktop.org/standards/xesam/1.0/core#contentModified

      Parent: None

    Children: 

  Belongs to: xesam:Content

• Description: Content last modification time

Field, xesam:contentType

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#contentType

      Parent: None

    Children: 

  Belongs to: xesam:Email

• Description: Email content mime type/charset

Field, xesam:contributor

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#contributor

      Parent: xesam:creator

    Children: 

  Belongs to: xesam:Content

• Description: Content contributor(s). Secondary contributor(s).

Field, xesam:copyright

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#copyright

      Parent: xesam:legal

    Children: 

  Belongs to: xesam:Content

• Description: Content copyright

Field, xesam:creator

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#creator

      Parent: None

    Children: xesam:author, xesam:maintainer, xesam:contributor

  Belongs to: xesam:Content

• Description: Abstract content creator. Use children

Field, xesam:definesClass

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#definesClass

      Parent: None

    Children: 

  Belongs to: xesam:SourceCode

• Description: Source code defines class

Field, xesam:definesFunction

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#definesFunction

      Parent: None

    Children: 

  Belongs to: xesam:SourceCode

• Description: Source code defines function

Field, xesam:definesGlobalVariable

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#definesGlobalVariable

      Parent: None

    Children: 

  Belongs to: xesam:SourceCode

• Description: Source code defines global variable

Field, xesam:deletionTime

   Data type: dateTime

         Url: http://freedesktop.org/standards/xesam/1.0/core#deletionTime

      Parent: None

    Children: 

  Belongs to: xesam:DeletedFile

• Description: File deletion time

Field, xesam:depends

   Data type: List of Uris

         Url: http://freedesktop.org/standards/xesam/1.0/core#depends

      Parent: xesam:related

    Children: xesam:contains

  Belongs to: xesam:Content

• Description: Dependency relation

Field, xesam:derivedFrom

   Data type: List of Uris

         Url: http://freedesktop.org/standards/xesam/1.0/core#derivedFrom

      Parent: xesam:links < xesam:related

    Children: xesam:inReplyTo

  Belongs to: xesam:Content

• Description: Links to the original content from which this content is derived

Field, xesam:description

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#description

      Parent: None

    Children: 

  Belongs to: xesam:Content

• Description: Content description. Description of content an order of magnitude more elaborate than Title

Field, xesam:discNumber

   Data type: integer

         Url: http://freedesktop.org/standards/xesam/1.0/core#discNumber

      Parent: None

    Children: 

  Belongs to: xesam:Audio

• Description: Audio cd number

Field, xesam:disclaimer

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#disclaimer

      Parent: xesam:legal

    Children: 

  Belongs to: xesam:Content

• Description: Content disclaimer

Field, xesam:documentCategory

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#documentCategory

      Parent: None

    Children: 

  Belongs to: xesam:Document

• Description: Document category: book, article, flyer, pamphlet whatever

Field, xesam:emailAddress

   Data type: List of strings

         Url: http://freedesktop.org/standards/xesam/1.0/core#emailAddress

      Parent: xesam:id
xesam:contactMedium

    Children: xesam:homeEmailAddress, xesam:workEmailAddress

  Belongs to: xesam:Contact

• Description: Contact email address. Email addresses must be qualified by the 'mailto:' URI scheme

Field, xesam:exposureBias

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#exposureBias

      Parent: None

    Children: 

  Belongs to: xesam:Photo

• Description: Photo exposure bias

Field, xesam:exposureProgram

   Data type: string

         Url: http://freedesktop.org/standards/xesam/1.0/core#exposureProgram

      Parent: None

    Children: 

  Belongs to: xesam:Photo

• Description: Photo exposure program