Seamless RDF Data Querying: FragLink-Driven Linked Data Fragments Servers

This article is a step-by-step guide that illustrates using FragLink to implement a Linked Data Fragments Server, specifically a Triple Pattern Server.
FragLink: A Linked Data Fragments Server Development Kit

Let us introduce FragLink: a Linked Data Fragments Server Framework that adds LDF capabilities to your Server.
GraphQL + OWL: Mutations

In the fourth of our GraphQL + OWL series, we design the “write” side of the system: in GraphQL, Mutations. Mutations, as the name suggests, allow the manipulation of data.
GraphQL + OWL: Types & Fields

The third part of our “GraphQL + OWL” series deals with types and properties, which are the building blocks of ontology and GraphQL.
GraphQL + OWL: Namespaces

In this article, we begin the implementation of a system providing a GraphQL interface on top of an arbitrary set of ontologies.
GraphQL + OWL: An “Ontologized” GraphQL Interface

This post describes a proposal for implementing a GraphQL interface over an arbitrary OWL. The article uses BIBFRAME as a reference ontology.
Towards a scalable Solr-based RDF Store

SolRDF (i.e., Solr + RDF) is a set of Solr extensions for managing (indexing and searching) RDF data. In a preceding post, I described how to set up a standalone SolRDF instance in two minutes; in this post, I’ll describe how to run SolRDF in a simple cluster. The required steps are similar to what […]
SPARQL Integration tests with SolRDF

The SolRDF Integration Tests Suite
Solr SPARQL Endpoint in Two Minutes

A Solr-backed RDF Store in 2 minutes.
RDF in Solr: HowTo

The Solr built-in UpdateRequestHandler supports several formats of input data. It delegates the actual data loading to a specific ContentStreamLoader, depending on the content type of the incoming request (i.e., the Content-type header of the HTTP request). Currently, these are the available content types declared in the UpdateRequestHandler class: application/xml or text/xml application/json or text/json application/csv or text/csv application/javabin So, a client has several options […]