regorus/bindings/java/Test.java

// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.

import com.microsoft.regorus.Engine;

public class Test {

    public static void main(String[] args) {
        try (Engine engine = new Engine()) {
            String pkg = engine.addPolicy(
                    "hello.rego",
                    "package test\nx=1\nmessage = concat(\", \", [input.message, data.message])"
            );
            System.out.println("Loaded package " + pkg);

            engine.addDataJson("{\"message\":\"World!\"}");
            engine.setInputJson("{\"message\":\"Hello\"}");

            // Evaluate query.
            String resJson = engine.evalQuery("data.test.message");
            System.out.println(resJson);

            // Enable coverage.
            engine.setEnableCoverage(true);

            // Evaluate rule.
            String valueJson = engine.evalRule("data.test.message");
            System.out.println(valueJson);

            String coverageJson = engine.getCoverageReport();
            System.out.println(coverageJson);

            System.out.println(engine.getCoverageReportPretty());

            String packagesJson = engine.getPackages();
            System.out.println(packagesJson);

            String policiesJson = engine.getPolicies();
            System.out.println(policiesJson);

            engine.setRegoV0(true);
            engine.addPolicy(
                    "world.rego",
                    "package world\nx { true }"
            );
        }
    }
}