org.springframework.validation.beanvalidation
Class SpringValidatorAdapter

java.lang.Object
  org.springframework.validation.beanvalidation.SpringValidatorAdapter

All Implemented Interfaces:

javax.validation.Validator

Direct Known Subclasses:

CustomValidatorBean, LocalValidatorFactoryBean

public class SpringValidatorAdapter
extends Object
implements Validator, javax.validation.Validator

Adapter that takes a JSR-303 javax.validator.Validator and exposes it as a Spring Validator while also exposing the original JSR-303 Validator interface itself.

Can be used as a programmatic wrapper. Also serves as base class for CustomValidatorBean and LocalValidatorFactoryBean.

Since:

3.0

Author:

Juergen Hoeller

Constructor Summary

SpringValidatorAdapter(javax.validation.Validator targetValidator)
Create a new SpringValidatorAdapter for the given JSR-303 Validator.

Method Summary

protected Object[]	getArgumentsForConstraint(String objectName, String field, javax.validation.metadata.ConstraintDescriptor<?> descriptor) Return FieldError arguments for a validation error on the given field.
javax.validation.metadata.BeanDescriptor	getConstraintsForClass(Class<?> clazz)
boolean	supports(Class<?> clazz) Can this Validator validate instances of the supplied clazz?
<T> T	unwrap(Class<T> type)
void	validate(Object target, Errors errors) Validate the supplied target object, which must be of a Class for which the Validator.supports(Class) method typically has (or would) return true.
<T> Set<javax.validation.ConstraintViolation<T>>	validate(T object, Class<?>... groups)
<T> Set<javax.validation.ConstraintViolation<T>>	validateProperty(T object, String propertyName, Class<?>... groups)
<T> Set<javax.validation.ConstraintViolation<T>>	validateValue(Class<T> beanType, String propertyName, Object value, Class<?>... groups)

Methods inherited from class java.lang.Object

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

Constructor Detail

SpringValidatorAdapter

public SpringValidatorAdapter(javax.validation.Validator targetValidator)

Create a new SpringValidatorAdapter for the given JSR-303 Validator.

Parameters:

targetValidator - the JSR-303 Validator to wrap

Method Detail

supports

public boolean supports(Class<?> clazz)

Description copied from interface: Validator

Can this Validator validate instances of the supplied clazz?

This method is typically implemented like so:

return Foo.class.isAssignableFrom(clazz);

(Where Foo is the class (or superclass) of the actual object instance that is to be validated.)

Parameters:

clazz - the Class that this Validator is being asked if it can validate

Returns:

true if this Validator can indeed validate instances of the supplied clazz

validate

public void validate(Object target,
                     Errors errors)

Description copied from interface: Validator

Validate the supplied target object, which must be of a Class for which the Validator.supports(Class) method typically has (or would) return true.

The supplied errors instance can be used to report any resulting validation errors.

Parameters:

target - the object that is to be validated (can be null)

errors - contextual state about the validation process (never null)

See Also:

ValidationUtils

getArgumentsForConstraint

protected Object[] getArgumentsForConstraint(String objectName,
                                             String field,
                                             javax.validation.metadata.ConstraintDescriptor<?> descriptor)

Return FieldError arguments for a validation error on the given field. Invoked for each violated constraint.

The default implementation returns a first argument indicating the field name (of type DefaultMessageSourceResolvable, with "objectName.field" and "field" as codes). Afterwards, it adds all actual constraint annotation attributes (i.e. excluding "message", "groups" and "payload") in alphabetical order of their attribute names.

Can be overridden to e.g. add further attributes from the constraint descriptor.

Parameters:

objectName - the name of the target object

field - the field that caused the binding error

descriptor - the JSR-303 constraint descriptor

Returns:

the Object array that represents the FieldError arguments

See Also:

DefaultMessageSourceResolvable.getArguments(), DefaultMessageSourceResolvable, DefaultBindingErrorProcessor.getArgumentsForBindError(java.lang.String, java.lang.String)

validate

public <T> Set<javax.validation.ConstraintViolation<T>> validate(T object,
                                                                 Class<?>... groups)

Specified by:

validate in interface javax.validation.Validator

validateProperty

public <T> Set<javax.validation.ConstraintViolation<T>> validateProperty(T object,
                                                                         String propertyName,
                                                                         Class<?>... groups)

Specified by:

validateProperty in interface javax.validation.Validator

validateValue

public <T> Set<javax.validation.ConstraintViolation<T>> validateValue(Class<T> beanType,
                                                                      String propertyName,
                                                                      Object value,
                                                                      Class<?>... groups)

Specified by:

validateValue in interface javax.validation.Validator

getConstraintsForClass

public javax.validation.metadata.BeanDescriptor getConstraintsForClass(Class<?> clazz)

Specified by:

getConstraintsForClass in interface javax.validation.Validator

unwrap

public <T> T unwrap(Class<T> type)

Specified by:

unwrap in interface javax.validation.Validator