OntoPop
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Microservices
OntoPop is an open-source project that enables the visualisation, search, exploration and management of version-controlled ontologies.
Last Updated: 04 February 2022 • Page Author: Jillur Quddus

Overview

OntoPop is an open-source collection of event-driven microservices that enable downstream applications to visualise, search, explore and manage version-controlled ontologies. The following diagram illustrates the event-driven microservices available in OntoPop.
OntoPop event-driven microservices
Each of these microservices is detailed in further detail in the following subsections.

Ontology Services

Ontology Ingestion Service

The ontology ingestion service ingests a W3C Web Ontology Language (OWL) ontology from a Git-based version control repository and copies it to persistent object storage.

Ontology Validation Service

The ontology validation service ingests a W3C Web Ontology Language (OWL) ontology and validates it using semantic reasoners, returning true or false.

Ontology Triplestore Loading Service

The ontology triplestore loading service ingests a W3C Web Ontology Language (OWL) ontology and loads it into a physical RDF triplestore.

Ontology Triplestore Query Service

The ontology triplestore query service is used to query the RDF triplestore using SPARQL queries and returns the relevant triples.

Ontology Parsing Service

The ontology parsing service ingests a W3C Web Ontology Language (OWL) ontology and parses it into its constituent objects, including annotation properties, object properties, classes and class relationships.

Property Graph Services

Property Graph Modelling Service

The property graph modelling service ingests the parsed objects from a W3C Web Ontology Language (OWL) ontology and models them as directed property graph objects, specifically vertices, edges, vertex properties and edge properties.

Property Graph Loading Service

The property graph loading service ingests the directed property graph objects and loads them into a physical graph database.

Property Graph Indexing Service

The property graph indexing service ingests the directed property graph objects and indexes them into a physical search index.

Property Graph Query Service

The property graph query service is used to query the graph database and search index using Gremlin graph and free-text search queries, and returns the relevant result sets.