GetInterfaceTest.java

/*
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package com.sun.script.jruby.test;

import java.io.FileNotFoundException;
import java.io.FileReader;
import javax.script.Invocable;
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;

/**
 * GetInterfaceTest.java
 * @author Yoko Harada
 */
public class GetInterfaceTest {

    public static void main(String[] args) throws FileNotFoundException, ScriptException {
        String basedir = System.getProperty("base.dir");
        ScriptEngineManager manager = new ScriptEngineManager();
        ScriptEngine engine = manager.getEngineByExtension("rb");
        Invocable invocable = (Invocable) engine;

        //invoke ruby's top-level methods implementing Java interface
        engine.eval(new FileReader(basedir+"/src/main/ruby/temperature.rb"));
        TempConversion convertor = invocable.getInterface(TempConversion.class);
        double f = 32.0;
        double c = 0.0;
        System.out.println(f + " Fahrenheit = " +
                convertor.get_c_from_f(f) + " Celsius");
        System.out.println(c + " Celsius = " +
                convertor.get_f_from_c(c) + " Fahrenheit");
        
        //invoke ruby's instance methods implementing Java interface
        Object obj = engine.eval(new FileReader(basedir+"/src/main/ruby/distance.rb"));
        DistConversion convertor2 =
                invocable.getInterface(obj, DistConversion.class);
        double k = 45.0;
        double m = 45.0;
        System.out.println(k + " km = " +
                convertor2.get_mi_from_km(k) + " mi");
        System.out.println(m + " mi = " +
                convertor2.get_km_from_mi(m) + " km");
    }
}