ArrayBinder Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/context/properties/bind/ArrayBinder.java lines 36–65

class ArrayBinder extends IndexedElementsBinder<Object> {

	ArrayBinder(Context context) {
		super(context);
	}

	@Override
	protected @Nullable Object bindAggregate(ConfigurationPropertyName name, Bindable<?> target,
			AggregateElementBinder elementBinder) {
		IndexedCollectionSupplier result = new IndexedCollectionSupplier(ArrayList::new);
		ResolvableType aggregateType = target.getType();
		ResolvableType elementType = target.getType().getComponentType();
		bindIndexed(name, target, elementBinder, aggregateType, elementType, result);
		if (result.wasSupplied()) {
			List<Object> list = (List<Object>) result.get();
			Object array = Array.newInstance(elementType.resolve(), list.size());
			for (int i = 0; i < list.size(); i++) {
				Array.set(array, i, list.get(i));
			}
			return array;
		}
		return null;
	}

	@Override
	protected Object merge(Supplier<Object> existing, Object additional) {
		return additional;
	}

}