Examples of org.springframework.validation.Validator

org.springframework.validation.Validator
A validator for application-specific objects.
This interface is totally divorced from any infrastructure or context; that is to say it is not coupled to validating only objects in the web tier, the data-access tier, or the whatever-tier. As such it is amenable to being used in any layer of an application, and supports the encapsulation of validation logic as first-class citizens in their own right.
Find below a simple but complete Validator implementation, which validates that the various {@link String}properties of a UserLogin instance are not empty (that is they are not null and do not consist wholly of whitespace), and that any password that is present is at least 'MINIMUM_PASSWORD_LENGTH' characters in length.
```
 public class UserLoginValidator implements Validator { private static final int MINIMUM_PASSWORD_LENGTH = 6; public boolean supports(Class clazz) { return UserLogin.class.isAssignableFrom(clazz); } public void validate(Object target, Errors errors) { ValidationUtils.rejectIfEmptyOrWhitespace(errors, "userName", "field.required"); ValidationUtils.rejectIfEmptyOrWhitespace(errors, "password", "field.required"); UserLogin login = (UserLogin) target; if (login.getPassword() != null && login.getPassword().trim().length() < MINIMUM_PASSWORD_LENGTH) { errors.rejectValue("password", "field.min.length", new Object[]{Integer.valueOf(MINIMUM_PASSWORD_LENGTH)}, "The password must be at least [" + MINIMUM_PASSWORD_LENGTH + "] characters in length."); } } }
```
See also the Spring reference manual for a fuller discussion of the Validator interface and it's role in a enterprise application. @author Rod Johnson @see Errors @see ValidationUtils

     * @param clazz The class to be validated.
     * @return Whether this validator supports the given class.
     */
    public boolean supports(Class clazz) {
        for (Iterator i = validators.iterator(); i.hasNext();) {
            Validator validator = (Validator)i.next();
            if (validator.supports(clazz)) {
                return true;
            }
        }
        return false;
    }

View Full Code Here

     * @param obj The validated object.
     * @param errors A registry where validation errors are registered.
     */
    public void validate(Object obj, Errors errors) {
        for (Iterator i = validators.iterator(); i.hasNext();) {
            Validator validator = (Validator)i.next();
            if (validator.supports(obj.getClass())) {
                validator.validate(obj, errors);
            }
        }
    }

View Full Code Here

   * before creating a {@code LocalValidatorFactoryBean}.If a JSR-303 
   * implementation is not available, a no-op {@link Validator} is returned.
   */
  @Bean
  public Validator mvcValidator() {
    Validator validator = getValidator();
    if (validator == null) {
      if (ClassUtils.isPresent("javax.validation.Validator", getClass().getClassLoader())) {
        Class<?> clazz;
        try {
          String className = "org.springframework.validation.beanvalidation.LocalValidatorFactoryBean";
          clazz = ClassUtils.forName(className, WebMvcConfigurationSupport.class.getClassLoader());
        } catch (ClassNotFoundException e) {
          throw new BeanInitializationException("Could not find default validator");
        } catch (LinkageError e) {
          throw new BeanInitializationException("Could not find default validator");
        }
        validator = (Validator) BeanUtils.instantiate(clazz);
      }
      else {
        validator = new Validator() {
          public boolean supports(Class<?> clazz) {
            return false;
          }
          public void validate(Object target, Errors errors) {
          }

View Full Code Here

  }


  public Validator getValidator() {
    Map<WebMvcConfigurer, Validator> validators = new HashMap<WebMvcConfigurer, Validator>();
    for (WebMvcConfigurer delegate : delegates) {
      Validator validator = delegate.getValidator();
      if (validator != null) {
        validators.put(delegate, validator);
      }
    }
    if (validators.size() == 0) {

View Full Code Here

   * before creating a {@code LocalValidatorFactoryBean}.If a JSR-303
   * implementation is not available, a no-op {@link Validator} is returned.
   */
  @Bean
  public Validator mvcValidator() {
    Validator validator = getValidator();
    if (validator == null) {
      if (ClassUtils.isPresent("javax.validation.Validator", getClass().getClassLoader())) {
        Class<?> clazz;
        try {
          String className = "org.springframework.validation.beanvalidation.LocalValidatorFactoryBean";
          clazz = ClassUtils.forName(className, WebMvcConfigurationSupport.class.getClassLoader());
        }
        catch (ClassNotFoundException e) {
          throw new BeanInitializationException("Could not find default validator", e);
        }
        catch (LinkageError e) {
          throw new BeanInitializationException("Could not find default validator", e);
        }
        validator = (Validator) BeanUtils.instantiate(clazz);
      }
      else {
        validator = new Validator() {
          public boolean supports(Class<?> clazz) {
            return false;
          }
          public void validate(Object target, Errors errors) {
          }

View Full Code Here

  }


  public Validator getValidator() {
    List<Validator> candidates = new ArrayList<Validator>();
    for (WebMvcConfigurer configurer : this.delegates) {
      Validator validator = configurer.getValidator();
      if (validator != null) {
        candidates.add(validator);
      }
    }
    return selectSingleInstance(candidates, Validator.class);

View Full Code Here

    BindException errors = (BindException)mav.getModel().get(ERRORS_KEY);
    assertEquals("There should be no errors", 0, errors.getErrorCount());
  }
  
  public void testWithValidatorNotSupportingCommandClass() throws Exception {
    Validator v = new Validator() {
      public boolean supports(Class c) {
        return false;
      }
      public void validate(Object o, Errors e) {}
    };

View Full Code Here


  public void testWithValidatorAddingGlobalError() throws Exception {
    final String errorCode = "someCode";
    final String defaultMessage = "validation error!";
    TestController tc = new TestController();
    tc.setValidator(new Validator() {
      public boolean supports(Class c) {
        return TestBean.class.isAssignableFrom(c);
      }
      public void validate(Object o, Errors e) {
        e.reject(errorCode, defaultMessage);

View Full Code Here


  public void testWithValidatorAndNullFieldError() throws Exception {
    final String errorCode = "someCode";
    final String defaultMessage = "validation error!";
    TestController tc = new TestController();
    tc.setValidator(new Validator() {
      public boolean supports(Class c) {
        return TestBean.class.isAssignableFrom(c);
      }
      public void validate(Object o, Errors e) {
        ValidationUtils.rejectIfEmpty(e, "name", errorCode, defaultMessage);

View Full Code Here


  public void testWithValidatorAndWhitespaceFieldError() throws Exception {
    final String errorCode = "someCode";
    final String defaultMessage = "validation error!";
    TestController tc = new TestController();
    tc.setValidator(new Validator() {
      public boolean supports(Class c) {
        return TestBean.class.isAssignableFrom(c);
      }
      public void validate(Object o, Errors e) {
        ValidationUtils.rejectIfEmptyOrWhitespace(e, "name", errorCode, defaultMessage);

View Full Code Here

0 1 2 3 4 5 6

TOP

Related Classes of org.springframework.validation.Validator

com.foreach.across.modules.web.config.AcrossWebDefaultMvcConfiguration

com.springsource.greenhouse.signup.SignupController

es.internna.framework.spring.mvc.validation.AbstractValidatorHolder

es.internna.framework.spring.mvc.validation.SystemValidator

es.internna.spring.mvc.api.validation.AbstractValidatorHolder

es.internna.spring.mvc.api.validation.SystemValidator

org.acegisecurity.domain.validation.ValidationManagerImpl

org.acegisecurity.domain.validation.ValidationRegistryManagerImpl

org.archive.spring.PathSharingContext

org.springframework.amqp.rabbit.listener.MethodRabbitListenerEndpointTests

All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.