RDF Store Connectors

This repository contains connectors to RDF stores. Its goal is to provide unified API for accessing various back-end implementations and to optimize them in future with implementations more optimized towards individual stores.

The project structure is as follows:

• semanticz-connectors-common - common utilities and interfaces used by the individual connectors
• semanticz-connectors-spring - integration to Spring, allowing to fetch a connector as a Spring bean
• individual connectors in semanticz-connector- modules:
  • semanticz-connector-fuseki - SparqlService-based implementation
  • semanticz-connector-graphdb - SparqlService-based implementation
  • semanticz-connector-stardog - SparqlService-based implementation
  • semanticz-connector-jenamemory - SparqlService-based implementation, RdfStoreService implementations
  • semanticz-connector-virtuoso - SparqlService implementation, RdfStoreService implementations
• examples - project exemplifying the usage.

Building

./gradlew clean build

Usage

The library currently supports Java 11, Jena 4, Spring 5 - full list of versions is in gradle/libs.versions.toml.

Two usage scenarios are anticipated:

1. Dedicated connector usage, e.g. for gradle:

implementation("zone.cogni.semanticz:semanticz-connector-fuseki:1.0.0")
implementation("zone.cogni.semanticz:semanticz-connectors-common:1.0.0")

2. Spring usage, e.g. for gradle:

implementation("zone.cogni.semanticz:semanticz-connectors-spring:1.0.0")
implementation("zone.cogni.semanticz:semanticz-connectors-common:1.0.0")

For details refer to the example project example-spring-with-fuseki.