SimpleELPerformanceTest.java

package com.googlecode.aviator;

import java.text.NumberFormat;
import java.util.HashMap;
import java.util.Map;

import junit.framework.TestCase;

public class SimpleELPerformanceTest extends TestCase {
	public void test_perf() throws Exception {

		Map<String, Object> ctx = new HashMap<String, Object>();
		ctx.put("a", 3);
		ctx.put("b", 4);
		ctx.put("c", 5);

        // AviatorEvaluator.setTrace(true);
		for (int i = 0; i < 10; ++i) {
			perf(ctx);
		}
	}

	private void perf(Map<String, Object> ctx) {
		Expression exp = AviatorEvaluator.compile("(a+b)*c");
		long startMillis = System.currentTimeMillis();

		final int COUNT = 1000 * 1000;
		for (int i = 0; i < COUNT; ++i) {
			exp.execute(ctx);
		}

		long millis = System.currentTimeMillis() - startMillis;

		System.out.println("time : "
				+ NumberFormat.getInstance().format(millis));
	}
}