Miscellaneous D-Bus services¶

Besides the SPARQL endpoint for data, the filesystem indexer offers other miscellaneous services for control and additional features. Access to these services may be allowed from Flatpak sandboxes.

org.freedesktop.Tracker3.Files.Control¶

This service allows a certain amount of control on the indexed locations. This service offers the following two interfaces:

org.freedesktop.Tracker3.Miner.Files.Index¶

Interface to change the indexed locations. It has the following method:

IndexLocation (IN  s  file_uri,
               IN  as graphs,
               IN  as flags)

This method requests to index a certain location. The filesystem indexer will ensure the location is indexed if it was not previously. the request will persist as long as the caller D-Bus name remains present in the bus.

The file_uri argument expresses the location to be indexed, the graphs array expresses the data graphs of interest for the caller (e.g. tracker:Audio). The filesystem indexer may prioritize these files to be available first.

The flags argument is unused at the moment and should remain empty.

See the definition of this interface.

org.freedesktop.Tracker3.Miner.Files.Proxy¶

Interface to introspect all indexed locations. It has the following properties:

Graphs (as): read only
IndexedLocations (as): read only

The global set of indexed locations and graphs will be returned by these properties.

See the definition of this interface.

org.freedesktop.Tracker3.Writeback¶

This service allows performing changes to the metadata contained in files out the metadata descriptions in RDF. This service exposes a single D-Bus interface, with the following method:

Writeback (IN  a{sv}  rdf)

The rdf argument expresses RDF data corresponding to the file whose metadata is being modified, in the same format that it would be accepted by the SPARQL endpoint. This can be obtained through e.g. tracker_resource_serialize().

This method may raise an error if the metadata could not be written.

Writeback is only available for audio formats handled by GStreamer, and XMP metadata.

See the definition of this interface.