This is a converter for translating DTDL ontologies into OpenAPI Specification documents. DTDL (Digital Twin Definition Language) is a JSON-LD-based language for modelling digital twins, their relations and properties, telemetry capabilities, command capabilities, etc. OpenAPI Specification is a standard for describing REST endpoints and operations. This tool generates REST endpoints for the DTDL Interfaces (i.e., types) declared in an ontology, and generates JSON-LD schemas for those types based on their Relations (to other types) and Properties (data fields).
dotnet run -i C:\path-to-DTDL-ontology -a C:\path-to-annotations.txt -m C:\mappings.csv -n C:\namespace-abbreviations.txt -o C:\output-file.yaml
-s, --server (Default: http://localhost:8080/) The server URL (where presumably an API implementation is running). -i, --inputPath Required. The path to the ontology root directory or file to translate. -a, --annotationsPath Required. Path to ontology annotations file detaililing, e.g., version, license, etc. -m, --mappingsPath Required. Path to mappings CSV file matching endpoint names to DTDL Interfaces. -n, --namespaceAbbreviationsPath Path to file mapping ontology namespace prefixes to abbreviations. -o, --outputPath Required. The path at which to put the generated OAS file. --help Display this help screen. --version Display version information.
Annotations, mappings, and namespace abbreviation files
For examples of these files, see the RealEstateCore API directory