ValidationResult Class — spring-boot Architecture

Source Code

core/spring-boot/src/main/java/org/springframework/boot/context/properties/bind/validation/ValidationBindHandler.java lines 154–254

	private class ValidationResult extends BeanPropertyBindingResult {

		private final ConfigurationPropertyName name;

		protected ValidationResult(ConfigurationPropertyName name, Object target) {
			super(target, "");
			this.name = name;
		}

		@Override
		public String getObjectName() {
			return this.name.toString();
		}

		@Override
		public @Nullable Class<?> getFieldType(@Nullable String field) {
			ResolvableType type = getBoundField(ValidationBindHandler.this.boundTypes, field);
			Class<?> resolved = (type != null) ? type.resolve() : null;
			if (resolved != null) {
				return resolved;
			}
			return super.getFieldType(field);
		}

		@Override
		protected @Nullable Object getActualFieldValue(String field) {
			Object boundField = getBoundField(ValidationBindHandler.this.boundResults, field);
			if (boundField != null) {
				return boundField;
			}
			try {
				return super.getActualFieldValue(field);
			}
			catch (Exception ex) {
				if (isPropertyNotReadable(ex)) {
					return null;
				}
				throw ex;
			}
		}

		private boolean isPropertyNotReadable(Throwable ex) {
			while (ex != null) {
				if (ex instanceof NotReadablePropertyException) {
					return true;
				}
				ex = ex.getCause();
			}
			return false;
		}

		private <T> @Nullable T getBoundField(Map<ConfigurationPropertyName, T> boundFields, @Nullable String field) {
			if (field == null) {
				return null;
			}
			try {
				ConfigurationPropertyName name = getName(field);
				T bound = boundFields.get(name);
				if (bound != null) {
					return bound;
				}
				if (name.hasIndexedElement()) {
					for (Map.Entry<ConfigurationPropertyName, T> entry : boundFields.entrySet()) {
						if (isFieldNameMatch(entry.getKey(), name)) {
							return entry.getValue();
						}
					}
				}
			}
			catch (Exception ex) {
				// Ignore
			}
			return null;
		}

		private boolean isFieldNameMatch(ConfigurationPropertyName name, ConfigurationPropertyName fieldName) {
			if (name.getNumberOfElements() != fieldName.getNumberOfElements()) {
				return false;
			}
			for (int i = 0; i < name.getNumberOfElements(); i++) {
				String element = name.getElement(i, Form.ORIGINAL);
				String fieldElement = fieldName.getElement(i, Form.ORIGINAL);
				if (!ObjectUtils.nullSafeEquals(element, fieldElement)) {
					return false;
				}
			}
			return true;
		}

		private ConfigurationPropertyName getName(String field) {
			return this.name.append(DataObjectPropertyName.toDashedForm(field));
		}

		ValidationErrors getValidationErrors() {
			Set<ConfigurationProperty> boundProperties = ValidationBindHandler.this.boundProperties.stream()
				.filter((property) -> this.name.isAncestorOf(property.getName()))
				.collect(Collectors.toCollection(LinkedHashSet::new));
			return new ValidationErrors(this.name, boundProperties, getAllErrors());
		}

	}