GroovyのMOP(Meta Object Protocol)

mop.groovy

package com.e2info.groovy

// groovy.lang.GroovyObject#getMetaClass

String.metaClass.define {
	hello { return "hello " + delegate }
	bye { return "bye " + delegate }
}

println "world".hello()
println "world".bye()

String.metaClass.and = {return delegate + it}

println "xxx".and("yyy")

/*
hello world
bye world
xxxyyy
*/


// groovy.lang.GroovyObject#invokeMethod

class InvokeMethodSample{
	def invokeMethod(String method, Object params) {
		println method
		if(params != null){
			params.each{ println it }
		}
	}
	def getProperty(String property){
		println property
	}
}

def im1 = new InvokeMethodSample();
im1.aiueo("a", "b");

/*
aiueo
a
b
 */

 
// groovy.lang.GroovyObject#getProperty

def im2 = new InvokeMethodSample();
im2.name

/*
name 
*/