collection-validation

Maven

<dependency>
    <groupId>org.biins</groupId>
    <artifactId>collection-validation</artifactId>
    <version>1.0</version>
</dependency>

About

collection-validation:

• extends JSR 303 validation on validation of collection of primitives
• support all element types as in javax.validation.constraints
• support some important hibernate validation
• validation message index is 1 based

Example

--- CLASS ---

class Person {
    @ElementsSize(element = String.class, value = @Size(max = 20))
    private List<String> tags;
}

--- VALIDATION ---

@Valid @ModelAttribute Person person

--- MESSAGE BUNDLE ---

{javax.validation.constraints.Size.message} at position {index}

--- MESSAGE ---

size must be between 0 and 20 at position 1

Simple configuration

Java config

@Import(org.biins.validation.collection.constraints.CollectionValidatorConfig)

XML config

• don't forget ConfigurationPostProcessor

<bean class="org.biins.validation.collection.constraints.CollectionValidatorConfig"/>

Supported validations

• 'Collection' validator -> 'Element' validator
• ElementsAssertFalse -> AssertFalse
• ElementsAssertTrue -> AssertTrue
• ElementsDecimalMax -> DecimalMax
• ElementsDecimalMin -> DecimalMin
• ElementsDigits -> Digits
• ElementsEmail -> Email
• ElementsFuture -> Future
• ElementsLength -> Length
• ElementsMax -> Max
• ElementsMin -> Min
• ElementsNotNull -> NotNull
• ElementsNull -> Null
• ElementsPast -> Past
• ElementsPattern -> Pattern
• ElementsSize -> Size
• ElementsURL -> URL
• ValidElements -> Validator (custom Spring validator)

Complex configuration

Java config

// initialize support of collection validation
@Bean
public CollectionConstraintValidatorSupport collectionValidatorSupport() {
  return new CollectionConstraintValidatorSupport();
}
// setup message interpolation
@Bean
public LocalValidatorFactoryBean localValidatorFactoryBean() throws Exception {
  LocalValidatorFactoryBean localValidatorFactoryBean = new LocalValidatorFactoryBean();
  localValidatorFactoryBean.setMessageInterpolator(messageInterpolation());
  return localValidatorFactoryBean;
}
// get collection validator message interpolator
@Bean
public MessageInterpolator messageInterpolation() throws Exception {
  return messageInterpolationFactoryBean().getObject();
}
// create message interpolator with message source
@Bean
public ElementsMessageInterpolatorFactoryBean messageInterpolationFactoryBean() {
  ElementsMessageInterpolatorFactoryBean interpolator = new ElementsMessageInterpolatorFactoryBean();
  interpolator.setMessageSource(messageSource());
  return interpolator;
}
@Bean
public MessageSource messageSource() {
    ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
    messageSource.setBasename("CollectionValidationMessages");
    return messageSource;
}

XML config

<!-- initialize support of collection validation -->
<bean class="org.biins.validation.collection.constraints.support.CollectionConstraintValidatorSupport"/>
<!-- setup message interpolation -->
<bean class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
  <property name="messageInterpolator" ref="collectionValidatorMessageInterpolator"/>
</bean>
<!-- create message interpolator with message source -->
<bean id="collectionValidatorMessageInterpolator" class="org.biins.validation.collection.constraints.support.ElementsMessageInterpolatorFactoryBean">
  <property name="messageSource" ref="collectionValidatorMessageSource"/>
</bean>
<!-- create message source -->
<bean id="collectionValidatorMessageSource" class="org.springframework.context.support.ResourceBundleMessageSource">
  <property name="basename" value="CollectionValidationMessages"/>
</bean>