Demarshalling fails on null enum value

[nva]

I just upgraded to Errai 2.1.1.Final and demarshalling null enum values fails with the NullPointerException inside of the generated marshaller. This worked in previous versions.

A simple example:

@Portable
public enum Test {
    A,
    B;
}

@Portable
public class Dto {
    private Test test;
    public Dto(@MapsTo("test") Test test) {
        this.test = test;
    }
    public Test getTest() {
        return test;
    }
}

When the Dto is instantiated like this, then demarshalling works:

Dto dto = new Dto(A);

However, when the Dto is instantiated like this, a NullPointerException is thrown on the client during demarshalling:

Dto dto = new Dto(null);

[csa]

Thanks, Valentin. This is fixed now in the latest 2.2.0-SNAPSHOTs.

[lewarrior22]

Hi, Just got the same problem with int property.

//When using this, The demarchalling Fail (Note the use of int id ), I have an Demarchalling Error; message = null and exception class is ResponseException.

@Portable

@Bindable

public class Account {

private int id ;

          private String name ;

@NotNull

          private String login ;

@NotNull

          private String password ;

          private String email ;

@NotNull

          private String website ;

          public Account() {

          }

          public Account(int id, String name, String login, String password,

                              String email, String website) {

                    super();

                    this.id = id;

                    this.name = name;

                    this.login = login;

                    this.password = password;

                    this.email = email;

                    this.website = website;

          }

     //getters + setters

     //toString

}

//And when I use this bean everything is correct.

/**

* @author boris

*

*/

@Portable

@Bindable

public class Account {

          private String name ;

@NotNull

          private String login ;

@NotNull

          private String password ;

          private String email ;

@NotNull

          private String website ;

          public Account() {

  // TODO Auto-generated constructor stub

          }

          public Account(int id, String name, String login, String password,

                              String email, String website) {

                    super();

                    this.name = name;

                    this.login = login;

                    this.password = password;

                    this.email = email;

                    this.website = website;

          }

     //getters + setters

     //toString

}

[nva]

Hi Boris, does it also happen when you change your 'int' field to 'Integer'? Java primitives do not support null values and 'int a = null' will always give you a null pointer exception.

Cheers,

V.

[lewarrior22]

Hi,
Yeah, the same problem occur, event with Long and Integer. It work fine only with String values. If I can post my code here :

@Portable

@Bindable

publicclass Account {

private Long id ;

private String name ;

@NotNull

private String login ;

@NotNull

private String password ;

private String email ;

@NotNull

private String website ;

public Account() {

// TODO Auto-generated constructor stub

}

public Account(Long id, String name, String login, String password,

String email, String website) {

super();

this.id = id;

this.name = name;

this.login = login;

this.password = password;

this.email = email;

this.website = website;

}

//getters and setters , toString()

}

//in the sample.local.share package

@Path("/accounts")

public interface AccountRESTService {

@POST

@Produces(MediaType.APPLICATION_JSON)

@Consumes(MediaType.APPLICATION_JSON)

public Account create(Account account) ;

@PUT

@Produces(MediaType.APPLICATION_JSON)

@Consumes(MediaType.APPLICATION_JSON)

public Account update(Account account) ;

//others methods

}

//and the implementation in the .sample.rest

public class SimpleAccountRESTService implements AccountRESTService{

@Override

public Account create(Account account) {

System.out.println("Account Received From client   "+account);

account.setName("creation success");

return account;

}

@Override

public Account update(Account account) {

System.out.println("\n Account Received For Update client   "+account);

account.setName("update success");

return account;

}

//others methods implementations

}

//here is how .sample.client.local

@Templated("#createAccountView")

public class CreateAccountView extends Composite {

@Inject

@Bound

@DataField

private TextBox id ;

@Inject

@Bound

@DataField

private TextBox name ;

//..others  TextBox

@Inject

@AutoBound

private DataBinder<Account> accountDataBinder ;

@Inject

private Caller<AccountRESTService> accountRestServiceCaller ;

@EventHandler("btnSave")

public void onBtnSaveClicked(ClickEvent click){

     //use the model to retrieve data from the form

     Account account = accountDataBinder.getModel();

               Window.alert("Save acount "+account+"  \n path"+RestClient.getApplicationRoot());

          RemoteCallback<Account> remoteCallback = new RemoteCallback<Account>() {

     @Override

     public void callback(Account response) {

          Window.alert("Account Created from server !"+response);

          }

     };

ErrorCallback errorCallback = new ErrorCallback() {

          @Override

          publicboolean error(Message message, Throwable throwable) {

               if(throwable instanceof TransportIOException){

                    Window.alert("Could Reach the server : ["+message+"]  \n and ["+throwable+"]" );

               }else {

                    Window.alert("Marschalling errors ["+message+"]  \n and ["+throwable+"]" );

               }

               returnt rue;

          }

     };

          RestClient.setJacksonMarshallingActive(true);

          accountRestServiceCaller.call(remoteCallback, errorCallback).create(account);

          Account update = accountRestServiceCaller.call(remoteCallback,errorCallback).update(account)

     }

}

I have my System.out.println() in JbossAS7's console. but I can't retrieve the returned account in the remoteCallBack object. @See the errorCallBack.

Now I waiting the version 2.2.0.SNAPSHOT been released ! And try again.

Thanks,