AutoConfigurations Class — spring-boot Architecture

Source Code

core/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/AutoConfigurations.java lines 38–83

public class AutoConfigurations extends Configurations implements Ordered {

	private static final SimpleMetadataReaderFactory metadataReaderFactory = new SimpleMetadataReaderFactory();

	private static final int ORDER = AutoConfigurationImportSelector.ORDER;

	static final AutoConfigurationReplacements replacements = AutoConfigurationReplacements
		.load(AutoConfiguration.class, null);

	private final UnaryOperator<String> replacementMapper;

	protected AutoConfigurations(Collection<Class<?>> classes) {
		this(replacements::replace, classes);
	}

	AutoConfigurations(UnaryOperator<String> replacementMapper, Collection<Class<?>> classes) {
		super(sorter(replacementMapper), classes, Class::getName);
		this.replacementMapper = replacementMapper;
	}

	private static UnaryOperator<Collection<Class<?>>> sorter(UnaryOperator<String> replacementMapper) {
		AutoConfigurationSorter sorter = new AutoConfigurationSorter(metadataReaderFactory, null, replacementMapper);
		return (classes) -> {
			List<String> names = classes.stream().map(Class::getName).map(replacementMapper).toList();
			List<String> sorted = sorter.getInPriorityOrder(names);
			return sorted.stream()
				.map((className) -> ClassUtils.resolveClassName(className, null))
				.collect(Collectors.toCollection(ArrayList::new));
		};
	}

	@Override
	public int getOrder() {
		return ORDER;
	}

	@Override
	protected AutoConfigurations merge(Set<Class<?>> mergedClasses) {
		return new AutoConfigurations(this.replacementMapper, mergedClasses);
	}

	public static AutoConfigurations of(Class<?>... classes) {
		return new AutoConfigurations(Arrays.asList(classes));
	}

}