# Jowl ## Overview Thin proxy in front of the external **JOWL server** (`mainConfig.jowlServer.url`), an OWL-API-based service that handles ontology axioms, Manchester-syntax conversion, and reasoner operations. All routes return `500` when `jowlServer.enabled` is false. These endpoints back the MappingModeler's axiom editor and the Lineage tool's "axiomatised classes" overlay. ## Modules ### 1. Axiom inspection (`classAxioms.js`, `listClassesWithAxioms.js`, `allAxioms.js`) Read existing axioms attached to a class (`classAxioms.js`), enumerate classes carrying axioms in a graph (`listClassesWithAxioms.js`), or list every axiom of a graph (`allAxioms.js`). Optional flags expose underlying RDF triples and Manchester-syntax forms. ### 2. Manchester ↔ Triples conversion (`manchesterAxiom2triples.js`, `axiomTriples2manchester.js`) Compile a Manchester-syntax expression into RDF triples (with optional persistence and consistency check), or render an array of triples as a Manchester string. ### 3. Reasoner operations (`reasoner.js`, `reasonerListInferenceParams.js`, `rules.js`) Trigger reasoner operations (`classify`, `consistency`, `unsatisfiable`, ...) on a graph or external URL, fetch the supported inference parameters, and manage Jena rule sets. ### 4. Graph ingestion (`importSource.js`, `uploadGraph.js`) Push a source graph (or a raw upload) to the JOWL server's working memory before reasoning. ```{toctree} :maxdepth: 5 :caption: Contents ``` ## Files in this directory - `allAxioms.js` - `axiomTriples2manchester.js` - `classAxioms.js` - `importSource.js` - `listClassesWithAxioms.js` - `manchesterAxiom2triples.js` - `reasoner.js` - `reasonerListInferenceParams.js` - `rules.js` - `uploadGraph.js`