Paper Info
Title
Empirical study on the usage of graph query languages in open source Java projects.
Abstract
Graph data models are interesting in various domains, in part because of the intuitiveness and flexibility they offer compared to relational models. Specialized query languages, such as Cypher for property graphs or SPARQL for RDF, facilitate their use. In this paper, we present an empirical study on the usage of graph-based query languages in open-source Java projects on GitHub. We investigate the usage of SPARQL, Cypher, Gremlin and GraphQL in terms of popularity and their development over time. We select repositories based on dependencies related to these technologies and employ various popularity and source-code based filters and ranking features for a targeted selection of projects. For the concrete languages SPARQL and Cypher, we analyze the activity of repositories over time. For SPARQL, we investigate common application domains, query use and existence of ontological data modeling in applications that query for concrete instance data. Our results show, that the usage of graph query languages in open-source projects increased over the last years, with SPARQL and Cypher being by far the most popular. SPARQL projects are more active in terms of query related artifact changes and unique developers involved, but Cypher is catching up. Relatively few applications use SPARQL to query for concrete instance data: A majority of those applications employ multiple different ontologies, including project and domain specific ones. Common application domains are management systems and data visualization tools.
Year
DOI
Venue
2019
10.1145/3357766.3359541
SLE '19: 12th ACM SIGPLAN International Conference on Software Language Engineering Athens Greece October, 2019
Field
DocType
ISBN
Ontology (information science),Ontology,Data modeling,Data visualization,Query language,Programming language,Information retrieval,Computer science,SPARQL,Java,RDF
Conference
978-1-4503-6981-7
Citations 
PageRank 
References 
1
0.38
40
Authors
5
Name
Order
Citations
PageRank
Philipp Seifer111.39
Johannes Härtel210.38
Martin Leinberger3235.94
Ralf Lämmel410.72
Steffen Staab56658593.89