I have created the following method which returns a Triple of strings. However, I don't like the way I've written it because I think I've put in too many Npe checks making it unreadable.
private Triplet<String, String, String> getInfoFromTable(Person person) {
StringBuilder idWithText = new StringBuilder();
String idText;
Date time = null;
Level level;
Exercise exerciseRecord = getExercise(person);
if (exerciseRecord != null && exerciseRecord.getId() != null) {
if(exerciseRecord.getLevel1() != null && exerciseRecord.getLevel2() != null){
level = new Level(exerciseRecord.getLevel1(), exerciseRecord.getLevel2());
} else {
level = new Level("1", "1");
}
idText = getIdText(level, exerciseRecord.getId());
if(!Strings.isNullOrEmpty(idText)) {
idWithText = idWithText.append(exerciseRecord.getId()).append(" " + idText);
}
if (exerciseRecord.getTime() != null) {
time = exerciseRecord.getTime().toDate();
}
return new Triplet<>(idWithText.toString(), "1", formatTime(time));
}
return new Triplet<>("", "", "");
}
Ηow can I make the above code look simpler? I've seen a little use of Optional but I don't know if it's good to use them in my case. Could someone help with the method refactor?
You need to split the huge method into several simple, it will decrease complexity.
private Triplet<String, String, String> getInfoFromTable(Person person) {
Exercise exerciseRecord = getExercise(person);
if (exerciseRecord != null && exerciseRecord.getId() != null) {
return new Triplet<>(getIdWithText(exerciseRecord, getLevel(exerciseRecord)), "1", formatTime(exerciseRecord.getTime()));
}
return new Triplet<>("", "", "");
}
private String formatTime(LocalTime time) {
if (time == null) {
return "";
}
return formatTime(time.toDate());
}
private Level getLevel(Exercise exerciseRecord) {
Level level;
if(exerciseRecord.getLevel1() != null && exerciseRecord.getLevel2() != null){
level = new Level(exerciseRecord.getLevel1(), exerciseRecord.getLevel2());
} else {
level = new Level("1", "1");
}
return level;
}
private String getIdWithText(Exercise exerciseRecord, Level level) {
String idWithText = "";
String idText = getIdText(level, exerciseRecord.getId());
if(!Strings.isNullOrEmpty(idText)) {
idWithText = String.format("%s %s", exerciseRecord.getId(), idText);
}
return idWithText;
}