title: Multiple constraints spring validation
body: <p>I am using spring to validate a form. The model for the form is similar to this:</p>
  
  <pre><code>public class FormModel {
  
      @NotBlank
      private String name;
  
      @NotNull
      @ImageSizeConstraint
      private MultipartFile image;
  
  }
  </code></pre>
  
  <p>The '@ImageSizeConstraint' is a custom constraint. What I want is for the @NotNull to be evaluated first and if this evaluates to false, not to evaluate @ImageSizeConstraint. </p>
  
  <p>If this is not possible, I will have to check for null in the custom constraint as well. Which is not a problem, but I would like to seperate the concerns (not null / image size / image / aspectratio / etc).</p>