Groovy Reflection: Fields and Properties

Eine simple Methode, um für eine übergebene Klasseninstanz ein Logging aller vorhandenen (öffentlichen) Felder und Methoden zu ermöglichen:

static Object invoke(Object instance) {
	Class inClass	= instance.class
	def filtered 	= ["metaClass","class","active","__\$stMC"]
	String prefix 	= "PL: ${inClass.name}: " 
	long pad 		= 0
	long l			= 0
	String n
	String v
	Map<String, String> m = [:]
	inClass.fields.each() {
		Field f ->
		try {
			n = f.name
			v = f.get(instance)
			if(!(n in filtered) && (v != null)) {
				n = "F: ${n}"
				l = n.length()
				if(l > pad) {
					pad = l
				}
				m[n] = v
			}
		}
		catch (Exception e) { 
			println(e)
		}
	}
	instance.properties.each {
		prop, val ->
		if(!(prop in filtered) && (val != null)) {
			prop = "P: ${prop}"
			l 	 = prop.length()
			if(l > pad) {
				pad = l
			}
			m[prop] = val
		}
	}
	pad = pad + prefix.length() + 3
	m.each {
		key, val ->
		println("${prefix}<${key}> ".padRight(pad, ' ') + "<${val}>")
	}
}