Hi
I encounter a problem. My problem is when I use @ApplicationState (e.g.
@ApplicationState private IAccount account;) to obtain a mock object, which
contains user/ account information, the system will complains
NullPointerException.
My purpose is to create LoginForm; so when user enters id/password, the system
will verify it. The login Form looks like:
Login.tml
<t:form t:id="login">
...
<input type="text" t:id="account" t:type="TextField" t:value="account"/>
...
<input type="text" t:id="password" t:type="PasswordField" t:value="password"/>
...
</t:form>
The Login.java will obtain id/ password and use a service to authenticate
whether the id/ password exists in the datasource (a mock object).
public class Login {
...
private static LoginService security = new LoginService();
...
@ApplicationState
private User user;
...
Object onSubmitFromLogin(){
user = security.authenticate(getAccount(), getPassword());
return index;
}
}
In LoginService.java, it contains mock object, which has registered using
AppModule services.
public class LoginService{
@ApplicationState
private IAccount account;
public User authenticate(String email, String password){
User u = account.findUserByAccount(email); // the error occurs
at here because account is always NULL!
if(password!=null && password.equals(u.getPassword())){
return u;
}
return null;
}
}
AppMoudle.java registers IAccount as a service. Indeed, another registered
object ICatalogue works without a problem; and after app is launched, there is
no error saying any failure related to IAccount service.
...
public void
contributeApplicationStateManager(MappedConfiguration<Class,
ApplicationStateContribution> configuration){
ApplicationStateCreator<ICatalogue> catalogue =
new ApplicationStateCreator<ICatalogue>(){
public ICatalogue create() {
return new Catalogue();
}
};
ApplicationStateCreator<IAccount> account =
new ApplicationStateCreator<IAccount>(){
public IAccount create() {
return new Account();
}
};
configuration.add(ICatalogue.class, new
ApplicationStateContribution("session", catalogue));
configuration.add(IAccount.class, new
ApplicationStateContribution("session", account));
}
...
Is is because the IAccount does not include in the Page folder? Or what might
cause such problem?
Thank you very much,
/arsene
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