AbstractValueExtractor Class — spring-boot Architecture

Source Code

core/spring-boot-autoconfigure-processor/src/main/java/org/springframework/boot/autoconfigureprocessor/AutoConfigureAnnotationProcessor.java lines 200–222

	private abstract static class AbstractValueExtractor implements ValueExtractor {

		@SuppressWarnings("unchecked")
		protected Stream<Object> extractValues(AnnotationValue annotationValue) {
			if (annotationValue == null) {
				return Stream.empty();
			}
			Object value = annotationValue.getValue();
			if (value instanceof List) {
				return ((List<AnnotationValue>) value).stream()
					.map((annotation) -> extractValue(annotation.getValue()));
			}
			return Stream.of(extractValue(value));
		}

		private Object extractValue(Object value) {
			if (value instanceof DeclaredType declaredType) {
				return Elements.getQualifiedName(declaredType.asElement());
			}
			return value;
		}

	}