org.springframework.validation.beanvalidation

Class MethodValidationInterceptor

java.lang.Object

org.springframework.validation.beanvalidation.MethodValidationInterceptor

All Implemented Interfaces:

Advice, Interceptor, MethodInterceptor

public class MethodValidationInterceptor
extends Object
implements MethodInterceptor

An AOP Alliance MethodInterceptor implementation that delegates to a JSR-303 provider for performing method-level validation on annotated methods.

Applicable methods have JSR-303 constraint annotations on their parameters and/or on their return value (in the latter case specified at the method level, typically as inline annotation).

E.g.: public @NotNull Object myValidMethod(@NotNull String arg1, @Max(10) int arg2)

Validation groups can be specified through Spring's Validated annotation at the type level of the containing target class, applying to all public service methods of that class. By default, JSR-303 will validate against its default group only.

As of Spring 4.0, this functionality requires either a Bean Validation 1.1 provider (such as Hibernate Validator 5.x) or the Bean Validation 1.0 API with Hibernate Validator 4.3. The actual provider will be autodetected and automatically adapted.

Since:

3.1

Author:

Juergen Hoeller

See Also:

MethodValidationPostProcessor, ExecutableValidator, MethodValidator

Constructor Summary

Constructors

Constructor and Description
MethodValidationInterceptor() Create a new MethodValidationInterceptor using a default JSR-303 validator underneath.
MethodValidationInterceptor(Validator validator) Create a new MethodValidationInterceptor using the given JSR-303 Validator.
MethodValidationInterceptor(ValidatorFactory validatorFactory) Create a new MethodValidationInterceptor using the given JSR-303 ValidatorFactory.

Method Summary

Modifier and Type	Method and Description
protected Class<?>[]	determineValidationGroups(MethodInvocation invocation) Determine the validation groups to validate against for the given method invocation.
Object	invoke(MethodInvocation invocation) Implement this method to perform extra treatments before and after the invocation.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

MethodValidationInterceptor

public MethodValidationInterceptor()

Create a new MethodValidationInterceptor using a default JSR-303 validator underneath.

MethodValidationInterceptor

public MethodValidationInterceptor(ValidatorFactory validatorFactory)

Create a new MethodValidationInterceptor using the given JSR-303 ValidatorFactory.

Parameters:

validatorFactory - the JSR-303 ValidatorFactory to use

MethodValidationInterceptor

public MethodValidationInterceptor(Validator validator)

Create a new MethodValidationInterceptor using the given JSR-303 Validator.

Parameters:

validator - the JSR-303 Validator to use

Method Detail

invoke

public Object invoke(MethodInvocation invocation)
              throws Throwable

Description copied from interface: MethodInterceptor

Implement this method to perform extra treatments before and after the invocation. Polite implementations would certainly like to invoke Joinpoint.proceed().

Specified by:

invoke in interface MethodInterceptor

Parameters:

invocation - the method invocation joinpoint

Returns:

the result of the call to Joinpoint.proceed(); might be intercepted by the interceptor

Throws:

Throwable - if the interceptors or the target object throws an exception

determineValidationGroups

protected Class<?>[] determineValidationGroups(MethodInvocation invocation)

Determine the validation groups to validate against for the given method invocation.

Default are the validation groups as specified in the Validated annotation on the containing target class of the method.

Parameters:

invocation - the current MethodInvocation

Returns:

the applicable validation groups as a Class array