Publication
SPARQλ: SPARQL as a Function
Christian Vogelgesang; Torsten Spieldenner; René Schubotz
In: Lecture Notes in Networks and Systems. Future of Information and Communication Conference (FICC-2019), March 14-15, San Francisco, Kalifornien, USA, Springer, 2019.
Abstract
With more and more applications providing semantic data
to improve interoperability, the amount of available RDF datasets is constantly
increasing. The SPARQL query language is a W3C recommendation
to provide query capabilities on such RDF datasets. Yet as the
coverage of RDF datasets with ecient and available SPARQL endpoints
is still limited, integration of data from di erent RDF sources is a bottleneck
that has mostly to be done in RDF consuming clients. We tackle
this bottleneck by introducing SPARQ, an extension to the SPARQL
1.1 query language. SPARQ enables dynamic injection of RDF datasets
during evaluation of the query, and by this lifts SPARQL to a tool to
write templates for RDF producing functions in functional programming
style. This is an important step to reduce the e ort to write SPARQL
queries that work on data from various sources. SPARQ is moreover
suitable to directly translate to an RDF described Web service interface,
which allows to lift integration of data and re-provisioning of integrated
results from clients to cloud environments.