public void inform(ResourceLoader loader) {
String encoderClass = args.get(ENCODER_ATTR);
if (encoderClass.equals("float")){
encoder = new FloatEncoder();
} else if (encoderClass.equals("integer")){
encoder = new IntegerEncoder();
} else if (encoderClass.equals("identity")){
encoder = new IdentityEncoder();
} else {
encoder = (PayloadEncoder) loader.newInstance(encoderClass);
}