.. _SPARQLEngine:

SPARQL Engine
-------------

The SPARQL engine included in TopBraid is essentially the ARQ engine from the Apache Jena API.
It covers all SPARQL standard features plus a few non-standard extensions.

.. note::
   Apache Jena is tracking the work on RDF-star and SPARQL-star, which means that some of the
   features that may be available go beyond the SPARQL 1.1 standard.
   Note however that these features are not supported by TopBraid and the :ref:`SPARQLQueryPanel`
   or the :ref:`SPARQLEndpointPage` may not allow entering such queries.

One of the most significant extensions to the standard SPARQL engine that is specific to TopBraid is
the rich :ref:`SPARQLFunctionsLibrary` and the ability to declare new functions using the DASH vocabulary.



.. toctree::
   :maxdepth: 2
   :caption: Contents:

   GeoSPARQLSupport
   SPARQLFunctionsLibrary
   SPARQLPropertyFunctionsLibrary

**Further Reading on TopBraid**

* :ref:`introduction`