Re: Validator with annotations

[Maurizio Cucchiara]

Ciao Simone,

have a look at VisitorFieldValidator [1] [2] and model driven. IMO it's
better to keep the annotations inside the action rather than the bean (you
can have different use cases for the same model).


[1]
http://struts.apache.org/release/2.3.x/docs/visitorfieldvalidator-annotation.html
[2]
http://struts.apache.org/release/2.2.x/docs/using-visitor-field-validator.html

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Maurizio Cucchiara


On 28 June 2013 07:08, Simone Camillo Buzzi simonebu...@gmail.com wrote:

 Hi, I have some doubt about how to use validation annotation.
 I'm changing my code to make it more readable and maintainable.

 I started from an action where I had all setters with annotation and i put
 data in a private local variable

 ex.
 private String email;

 @RequiredStringValidator(key=fieldError.required, message = *)
  @EmailValidator (key=fieldError.emailFormat, message=*)
 public void setEmail(String email) {
  this.email = email;
 }

 It functioned well but I neeed to reorganize my code.
 So, I create e class User where I directly put data coming from the web and
 I erase all the private variable in this way

 User user = null;
  public User getUser() {
 if (user == null)
 user = new User();
  return user;
 }

 @RequiredStringValidator(key=fieldError.required, message = *)
  @EmailValidator (key=fieldError.emailFormat, message=*)
 public void setEmail(String email) {
  getUser().setEmail(email);
 }

 My bean receives data but validators stop to function, so I receive bad
 validation messages
 Does validator need a getter (not present also in the first release) or use
 reflection on local variables to check data?
 How can I implement my new data model in Struts2

 dependency
   groupIdorg.apache.struts/groupId
   artifactIdstruts2-core/artifactId
   version2.3.14/version
 /dependency


 Kind regards
 Simone Buzzi

Re: Validator with annotations

[Simone Camillo Buzzi]

Hi, the goal that I'm trying to reach is to reduce the number of variables
and method into the Struts action to improve code readability and
maintainability.
I'm using hibernate, so I could obtain a good synergy if i can set value
coming from parameters directly into the hibernate model bean, maintaing
the validation at the action level as you recommends.
I prefer to don't insert struts annotation in hibernate bean, I don't know
which effect I can obtain in this way and I don't want to a dependency
between the model and struts.

I don't understand why I have this behaviour in the action. Does the
interceptor need a getter to evaluate the field? What's the convention?

Kind regards
Simone Buzzi