StringToDataSizeConverter Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/convert/StringToDataSizeConverter.java lines 38–62

final class StringToDataSizeConverter implements GenericConverter {

	@Override
	public Set<ConvertiblePair> getConvertibleTypes() {
		return Collections.singleton(new ConvertiblePair(String.class, DataSize.class));
	}

	@Override
	public @Nullable Object convert(@Nullable Object source, TypeDescriptor sourceType, TypeDescriptor targetType) {
		if (ObjectUtils.isEmpty(source)) {
			return null;
		}
		return convert(source.toString(), getDataUnit(targetType));
	}

	private @Nullable DataUnit getDataUnit(TypeDescriptor targetType) {
		DataSizeUnit annotation = targetType.getAnnotation(DataSizeUnit.class);
		return (annotation != null) ? annotation.value() : null;
	}

	private DataSize convert(String source, @Nullable DataUnit unit) {
		return DataSize.parse(source, unit);
	}

}