Plugins

Multiple GraphDB features are implemented as plugins based on the GraphDB Plugin API. As they vary in functionality, you can find them under the respective sections in the GraphDB documentation.

Plugin	Description
Semantic Similarity Searches	Exploring and searching semantic similarity in RDF resources.
RDF Rank	An algorithm that identifies the more important or more popular entities in the repository by examining their interconnectedness.
JavaScript Functions	Defining and executing JavaScript code, further enhancing data manipulation with SPARQL.
Change Tracking	Tracking changes within the context of a transaction identified by a unique ID.
Provenance	Generation of inference closure from a specific named graph at query time.
Proof plugin	Finding out how a given statement has been derived by the inferencer.
Graph Path Search	Exploring complex relationships between resources.

Several of the plugins enable you to create and access user-defined indexes. They are created with SPARQL, and differ from the system indexes in that they can be configured dynamically at runtime. Any user with write access to a given repository can define such an index.

These are:

Plugin	Description
Autocomplete Index	Suggestions for the IRIs` local names in the SPARQL editor and the View Resource page.
GeoSPARQL Support	GeoSPARQL is a standard for representing and querying geospatial linked data for the Semantic Web from the Open Geospatial Consortium (OGC). The plugin allows the conversion of Well-Known Text from different coordinate reference systems (CRS) into the CRS84 format, which is the default CRS according to the OGC.
Geospatial Extensions	Support of 2-dimensional geospatial data that uses the WGS84 Geo Positioning RDF vocabulary (World Geodetic System 1984).
Data History and Versioning	Accessing past states of your database through versioning of the RDF data model level.
Text Mining Plugin	Calling of text mining algorithms and generation of new relationships between entities.
Sequences Plugin	Providing transactional sequences for GraphDB. A sequence is a long counter that can be atomically incremented in a transaction to provide incremental IDs.

The GraphDB Connectors are such indexes as well.