MethodValidationPostProcessor class final

The bean that turns on method validation: it applies a MethodValidationInterceptor to every bean whose class is annotated @Validated().

Spring Boot's auto-configuration registers one as methodValidationPostProcessor, using the application's BeanValidator bean and leaving @ConfigurationProperties classes out. Declare your own only without Spring Boot, or to change the validator or the exclusions; Boot then backs off.

Despite its name it is an advisor, not a post-processor: proxies are generated at build time, so the context's auto proxy creator applies it like any advisor bean, also to beans that other advice already proxies.

// Method validation in a context without Spring Boot.
@Configuration()
class ValidationConfig {
  @Bean()
  MethodValidationPostProcessor methodValidationPostProcessor(
    BeanIntrospector introspector,
  ) => MethodValidationPostProcessor(
      BeanValidator(introspector: introspector));
}

Spring (Java):

@Bean
static MethodValidationPostProcessor methodValidationPostProcessor() {
  return new MethodValidationPostProcessor();
}

Implemented types

• PointcutAdvisor
• Ordered

Constructors

MethodValidationPostProcessor([BeanValidator? validator, List<bool Function(List<Object> classAnnotations)> excludeFilters = const []])

An advisor that checks with validator (by default a new BeanValidator on BeanIntrospector.shared).

Properties

advice → MethodValidationInterceptor

The interceptor that runs around each advised call.

final

excludeFilters → List<bool Function(List<Object> classAnnotations)>

Tests on the annotations of a bean class; a bean is not validated when one returns true.

final

hashCode → int

The hash code for this object.

no setter, inherited

order → int

Ordered.lowestPrecedence: validation runs innermost, after other advice such as caching, like Spring's validation advisor, which is added after the existing ones.

no setter, override

pointcut → AnnotationPointcut

Matches the methods of beans whose class is annotated @Validated() and not excluded by excludeFilters.

no setter, override

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

Methods

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Constants

annotationTypes → const List<Type>

The annotation this advisor matches; the generator reads it to give a proxy class only to the beans that carry it.