@Override
public Object flatten(Object obj, IRootFlattener rootFlattener) {
Object[] in = (Object[]) obj;
Object[] out = new Object[in.length];
for (int i = 0; i < out.length; i++) {
out[i] = rootFlattener.flatten(in[i]);
}
return out;
}
@Override
public Object[] unflatten(Object obj, IRootFlattener rootFlattener) {
Object[] inObjArray = (Object[]) obj;
Object[] unflattened = new Object[inObjArray.length];
// If all objects are the same class, unflatten to an array of that type
Class<?> clazz = null;
boolean canSpecializeUnflattenClazz = true;
Class<?> superClazz = null;
boolean canSpecializeUnflattenSuperClazz = true;
for (int i = 0; i < unflattened.length; i++) {
unflattened[i] = rootFlattener.unflatten(inObjArray[i]);
if (unflattened[i] == null) {
// ok, keep going
} else if (superClazz != null && !superClazz.isAssignableFrom(unflattened[i].getClass())) {
canSpecializeUnflattenSuperClazz = false;
} else if (superClazz == null) {
canSpecializeUnflattenSuperClazz = false;
}
if (unflattened[i] == null) {
// ok, keep going
} else if (clazz != null && !clazz.equals(unflattened[i].getClass())) {
canSpecializeUnflattenClazz = false;
} else if (clazz == null) {
clazz = unflattened[i].getClass();
}
}
if (canSpecializeUnflattenClazz && clazz != null) {
canSpecializeUnflattenSuperClazz = true;
superClazz = clazz;
}
if (canSpecializeUnflattenSuperClazz && superClazz != null) {
@SuppressWarnings("unchecked")
Class<? extends Object[]> arrayClazz =
(Class<? extends Object[]>) Array.newInstance(superClazz, 0).getClass();
return Arrays.copyOf(unflattened, unflattened.length, arrayClazz);
}
return unflattened;
}