Tracker-specific annotations Ontology: Tracker Ontology Reference Manual

## Tracker-specific annotations Ontology Tracker-specific annotations Ontology — Internal tracker properties |

## Synopsis

    @prefix tracker: <http://tracker.api.gnome.org/ontology/v3/tracker#>

## Classes

ExternalReference, IndexedFolder

## Additional Properties

isDefaultTag, tagRelatedTo, extractorHash, hasExternalReference

## Class Details

### ExternalReference

#### Description

External reference to online services

#### Class hierarchy

        nie:InformationElement
            tracker:ExternalReference

#### Properties

Name | Type | Notes | Description
--- | --- | --- | ---
`referenceIdentifier` | string |  | Identifier of the external reference
`referenceSource` | Resource |  | Source of the external reference (eg. 'Musicbrainz')

### IndexedFolder

#### Class hierarchy

        nfo:Folder ──────┐
        nie:DataSource ──┤
                         └── tracker:IndexedFolder

#### Properties

Name | Type | Notes | Description
--- | --- | --- | ---
`available` | boolean |  |
`isOptical` | boolean |  |
`isRemovable` | boolean |  |
`unmountDate` | dateTime |  |

## Property Details

### Additional properties for nao:Tag

#### Description

Properties this ontology defines which can describe nao:Tag resources.

#### Properties

Name | Type | Notes | Description
--- | --- | --- | ---
`isDefaultTag` | boolean |  |
`tagRelatedTo` | Class |  |

### Additional properties for nfo:FileDataObject

#### Description

Properties this ontology defines which can describe nfo:FileDataObject resources.

#### Properties

Name | Type | Notes | Description
--- | --- | --- | ---
`extractorHash` | string |  | Hash identifying the extractor of the metadata

### Additional properties for nie:InformationElement

#### Description

Properties this ontology defines which can describe nie:InformationElement resources.

#### Properties

Name | Type | Notes | Description
--- | --- | --- | ---
`hasExternalReference` | ExternalReference |  | Links the information element with the external reference

## Credits and Copyright

Authors:
  - Tracker developers
Editors:
  - Tracker developers
Upstream:

  Not available

ChangeLog:

  Tracker changes