groovy-logger.log

Printed object: [['id3' : 'value3', 'id2' : 'value2', 'id1' : 1], ['id3' : ['id3' : 'value3', 'id2' : 'value2', 'id1' : 'value1'], 'id2' : 'value2', 'id1' : 'value1'], ['id3' : 'value3', 'id2' : 'value2', 'id1' : 'value1']]

logger.log

org.mule.api.processor.LoggerMessageProcessor: [{id3=value3, id2=value2, id1=1}, {id3={id3=value3, id2=value2, id1=value1}, id2=value2, id1=value1}, {id3=value3, id2=value2, id1=value1}]

print-object.groovy

def s = printObject(message.payload)

println('Printed object: ' + s)
return payload

String printObject(o)
{
	if (o instanceof List) return printList(o)
	if (o instanceof Map) return printMap(o)
	if ((o instanceof Integer) || (o instanceof Long) || (o instanceof Float) || (o instanceof Double)) return printNumber(o)
	return printString(o)
}

String printList(l)
{
	def sl = new StringBuilder()
	sl << '['
	l.each{ i -> sl << printObject(i) +', ' }
	sl.delete(sl.length()-2, sl.length())
	sl << ']'
	return sl
}

String printMap(m)
{
	def sm = new StringBuilder()
	
	sm << '['
	m.each{ k, v-> sm << printObject(k) +' : '+ printObject(v) +', ' }
	sm.delete(sm.length()-2, sm.length())
	sm << ']'
	return sm
}

String printNumber(n)
{
	return n
}

String printString(s)
{
	return s == null ?  "null" : "'" + s + "'"
}