CompilerFactoryFactory example

Application.java

package com.bskyb.demo.janino;

import org.codehaus.commons.compiler.CompilerFactoryFactory;
import org.codehaus.commons.compiler.IExpressionEvaluator;

import java.util.Arrays;
import java.util.List;

public class Application {

    public static void main(String[] args) throws Exception {
        // incoming arguments
        String region = "GB";
        String identifier = "AA123456GB";

        // Known devices
        List<String> devices = Arrays.asList("foo", "bar", identifier);

        // Create "ExpressionEvaluator" object.
        IExpressionEvaluator ee = CompilerFactoryFactory.getDefaultCompilerFactory().newExpressionEvaluator();
        ee.setExpressionType(boolean.class);
        ee.setParameters(
                new String[] { "r1", "r2" },
                new Class[] { String.class, String.class }
        );
        ee.cook("r1.equals(r2)");

        // Evaluate expression with actual parameter values.
        boolean result = (Boolean) ee.evaluate(new String[] {
                "GB", region
        });

        // Print expression result.
        System.out.println("Result = " + result);
    }

}