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From: Jeff Higgins <jeff@invalid.invalid>
Newsgroups: comp.lang.java.programmer
Subject: Re: What is the meaning of these two required fields
Date: Thu, 30 Jul 2015 04:49:21 -0400
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On 07/30/2015 03:52 AM, Cecil Westerhof wrote:
> I wrote my own annotation:
>      // public
>      @Documented
>      @Constraint(validatedBy = {})
>      @Target({ FIELD })
>      @Retention(RUNTIME)
>      @ReportAsSingleViolation
>      @NotNull
>      @Size(min = 1)
>      public @interface NotEmpty {
>          // default
>          Class<?>[]                  groups()  default   { };
>          String                      message() default  "Field should be filled";
>          Class<? extends Payload>[]  payload() default  {};
>      }
>
> I understand the reason for message: that is the message for when
> there is a validation constraint.
>
> But what are the reasons for groups and payload?
>
<http://beanvalidation.org/1.1/spec/#constraintsdefinitionimplementation-constraintdefinition-properties>


<http://docs.jboss.org/hibernate/validator/5.1/reference/en-US/html/>
And just ignore the Hibernate extensions if you like.