juel 性能测试 表达式的写法有点奇怪

获取一个对象的属性是这样写："${test.a}"  但是外层有$的时候，要去掉
测试发现性能还是挺好的：
1000000次 ===>1243毫秒 100000次 ===>394毫秒
测试代码：

package com.eyu.ahxy.module.expression.juel;

import javax.el.ExpressionFactory;
import javax.el.ValueExpression;

import org.junit.Test;

import de.odysseus.el.ExpressionFactoryImpl;
import de.odysseus.el.util.SimpleContext;

/**
 * 1000000次 ===>1243毫秒 100000次 ===>394毫秒
 * @author bean
 */
public class JuelTest {

	public static final int NUM = 1000000;

	public int getA() {
		return 10;
	}

	public int getB() {
		return 10;
	}

	String exp = "${Math:min(Math:floor(test.a*test.b),Math:floor(c+d*e))}";

	ExpressionFactory factory = new ExpressionFactoryImpl();

	SimpleContext context = new SimpleContext();

	@Test
	public void compileTest() throws Exception {
		context.setFunction("Math", "min", Math.class.getMethod("min", int.class, int.class));
		context.setFunction("Math", "floor", Math.class.getMethod("floor", double.class));
		context.setVariable("test", factory.createValueExpression(new JuelTest(), JuelTest.class));
		context.setVariable("c", factory.createValueExpression(10, Integer.class));
		context.setVariable("d", factory.createValueExpression(10, Integer.class));
		context.setVariable("e", factory.createValueExpression(2, Integer.class));
		ValueExpression e = factory.createValueExpression(context, exp, String.class);

		for (int i = 0; i < NUM; i++) {
			Object result = e.getValue(context);
			// System.err.println(result);
		}
	}

}

使用的jar包版本2.2.7
<dependency>
<groupId>de.odysseus.juel</groupId>
<artifactId>juel-spi</artifactId>
<version>2.2.7</version>
</dependency>


<dependency>
<groupId>de.odysseus.juel</groupId>
<artifactId>juel-api</artifactId>
<version>2.2.7</version>
</dependency>

<dependency>
<groupId>de.odysseus.juel</groupId>
<artifactId>juel-impl</artifactId>
<version>2.2.7</version>
</dependency>