Transformer Class

Overview

The Transformer class is a Java implementation for transforming JSON objects representing p-plan in a knime workflows into ontology models using the Apache Jena framework.

Dependencies

• Apache Jena: Framework for building Semantic Web and Linked Data applications.
• JSON.org: Toolkit for parsing and generating JSON.

Features

• Converts knime workflow components (variables, steps, plans) into ontological entities.
• Handles file operations for reading and writing Turtle files.
• Manages namespaces for ontology.

Usage

1. Initialize Transformer with a workflow JSON object.
2. Call knimeToPplan() to transform the JSON workflow into an ontology model.
3. Use save() to write the ontology model to a Turtle file.

import org.json.JSONObject;

public class Main {
    public static void main(String[] args) {
        JSONObject workflowJson = //... load your workflow JSON here
        Transformer transformer = new Transformer(workflowJson);
        transformer.knimeToPplan();
        transformer.save();
    }
}

Note

1. p-plan.ttl should be in src/main/resources/.
2. Adaptation might be required for different JSON structures or ontologies.
3. Basic exception handling is implemented.