CollectionConverter.java 文件源码

final Object toNonNullOpenValue(Object value) throws OpenDataException {
  final Collection valueCollection = (Collection) value;
  if (valueCollection instanceof SortedSet) {
    Comparator comparator = ((SortedSet) valueCollection).comparator();
    if (comparator != null) {
      final String msg = "Cannot convert SortedSet with non-null comparator: " + comparator;
      throw openDataException(msg, new IllegalArgumentException(msg));
    }
  }
  final Object[] openArray =
      (Object[]) Array.newInstance(getOpenClass().getComponentType(), valueCollection.size());
  int i = 0;
  for (Object o : valueCollection)
    openArray[i++] = elementConverter.toOpenValue(o);
  return openArray;
}