Adding a name to the User entity

We have already coded our User entity like this:

@Entity
@Table(name="usr")
public class User extends AbstractUser<User,Long> {

    private static final long serialVersionUID = 2716710947175132319L;

}

Add a name field to it, looking like this:

    public static final int NAME_MIN = 1;
    public static final int NAME_MAX = 50;

    @JsonView(SignupInput.class)
    @NotBlank(message = "{blank.name}", groups = {SignUpValidation.class, UpdateValidation.class})
    @Size(min=NAME_MIN, max=NAME_MAX, groups = {SignUpValidation.class, UpdateValidation.class})
    @Column(nullable = false, length = NAME_MAX)
    private String name;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

Note that groups = {SignUpValidation.class, UpdateValidation.class} tells Spring Lemon to apply the validation only while signing up or updating profile. For more details, refer the documentation and resources.