jodd-bean/src/main/java/jodd/typeconverter/impl/LongArrayConverter.java
protected long[] convertValueToArray(final Object value) {
		if (value instanceof Collection) {
			final Collection collection = (Collection) value;
			final long[] target = new long[collection.size()];

			int i = 0;
			for (final Object element : collection) {
				target[i] = convertType(element);
				i++;
			}

			return target;
		}

		if (value instanceof Iterable) {
			final Iterable iterable = (Iterable) value;

			final ArrayList<Long> longArrayList = new ArrayList<>();

			for (final Object element : iterable) {
				final long convertedValue = convertType(element);
				longArrayList.add(Long.valueOf(convertedValue));
			}

			final long[] array = new long[longArrayList.size()];

			for (int i = 0; i < longArrayList.size(); i++) {
				final Long l = longArrayList.get(i);
				array[i] = l.longValue();
			}

			return array;
		}

		if (value instanceof CharSequence) {
			final String[] strings = StringUtil.splitc(value.toString(), ArrayConverter.NUMBER_DELIMITERS);
			return convertArrayToArray(strings);
		}

		// everything else:
		return convertToSingleElementArray(value);
	}
protected long[] convertValueToArray(final Object value) {
		if (value instanceof Collection) {
			final Collection collection = (Collection) value;
			final long[] target = new long[collection.size()];

			int i = 0;
			for (final Object element : collection) {
				target[i] = convertType(element);
				i++;
			}

			return target;
		}

		if (value instanceof Iterable) {
			final Iterable iterable = (Iterable) value;

			final ArrayList<Long> longArrayList = new ArrayList<>();

			for (final Object element : iterable) {
				final long convertedValue = convertType(element);
				longArrayList.add(Long.valueOf(convertedValue));
			}

			final long[] array = new long[longArrayList.size()];

			for (int i = 0; i < longArrayList.size(); i++) {
				final Long l = longArrayList.get(i);
				array[i] = l.longValue();
			}

			return array;
		}

		if (value instanceof CharSequence) {
			final String[] strings = StringUtil.splitc(value.toString(), ArrayConverter.NUMBER_DELIMITERS);
			return convertArrayToArray(strings);
		}

		// everything else:
		return convertToSingleElementArray(value);
	}
Converts non-array value to array. Detects various
collection types and iterates them to make conversion
and to create target array.