Accessing superclass method of subclass through another class in java
What is the best solution for this problem?
This is the superClass
public class Views<T> {
private T controller;
public Views() {
}
public Stage getStage(Node object){
return (Stage) object.getScene().getWindow();
}
public T getController(){
return controller;
}
public void setController(T controller){
this.controller = controller;
}
}
I have this interface:
public interface UserView extends Observer{
public void setLoginObjects(Parent root);
public void loginStartUI() throws Exception;
public void setCriarUserObjects(Parent root, User user);
public void criarUserStartUI(User user) throws Exception;
}
I have this subclass of Views:
public class UserViewImpl extends Views<UserController> implements UserView{
...
And i have this class:
public class UserController {
private UserView view;
private UserDAOImpl model;
public UserController(UserView view, UserDAOImpl model) {
this.model = model;
this.view = view;
view.setController(this);
this.model.addObserver(view);
}
...
What is the best solution for this problem?
Should i put together Views and UserView? (The problem for this solution is i will have more views, for example i have ParqueView and ParqueViewImpl, that basically will have the same methods as Views, so there would be repeated code and i want to avoid that)
The main problem is that inside my UserController i pass as parameter UserView, which does not have access to super class methods, and i need to access setController which is located in Views class, it doesnt make sense to change the type of UserView to Views in userController because of the MVC
java interface subclass superclass
asked Dec 31 '18 at 18:50
Hugo ModestoHugo Modesto
188
|
show 4 more comments
What is the best solution for this problem?
This is the superClass
public class Views<T> {
private T controller;
public Views() {
}
public Stage getStage(Node object){
return (Stage) object.getScene().getWindow();
}
public T getController(){
return controller;
}
public void setController(T controller){
this.controller = controller;
}
}
I have this interface:
public interface UserView extends Observer{
public void setLoginObjects(Parent root);
public void loginStartUI() throws Exception;
public void setCriarUserObjects(Parent root, User user);
public void criarUserStartUI(User user) throws Exception;
}
I have this subclass of Views:
public class UserViewImpl extends Views<UserController> implements UserView{
...
And i have this class:
public class UserController {
private UserView view;
private UserDAOImpl model;
public UserController(UserView view, UserDAOImpl model) {
this.model = model;
this.view = view;
view.setController(this);
this.model.addObserver(view);
}
...
What is the best solution for this problem?
Should i put together Views and UserView? (The problem for this solution is i will have more views, for example i have ParqueView and ParqueViewImpl, that basically will have the same methods as Views, so there would be repeated code and i want to avoid that)
The main problem is that inside my UserController i pass as parameter UserView, which does not have access to super class methods, and i need to access setController which is located in Views class, it doesnt make sense to change the type of UserView to Views in userController because of the MVC
java interface subclass superclass
asked Dec 31 '18 at 18:50
Hugo ModestoHugo Modesto
188
2
"What is the best solution for this problem?" - You never explained what the problem is (the title does not suffice).
– Jacob G.
Dec 31 '18 at 18:53
WouldParqueViewalso have/need the methods fromUserView?
– user7
Dec 31 '18 at 18:55
@user7 no, ParqueView needs the methods from Views
– Hugo Modesto
Dec 31 '18 at 18:56
@JacobG. sorry i though the problem was pretty obvious, ill edit the post!
– Hugo Modesto
Dec 31 '18 at 18:56
You could make View an interface and makeUserViewimplement it?
– user7
Dec 31 '18 at 19:01
|
show 4 more comments
What is the best solution for this problem?
This is the superClass
public class Views<T> {
private T controller;
public Views() {
}
public Stage getStage(Node object){
return (Stage) object.getScene().getWindow();
}
public T getController(){
return controller;
}
public void setController(T controller){
this.controller = controller;
}
}
I have this interface:
public interface UserView extends Observer{
public void setLoginObjects(Parent root);
public void loginStartUI() throws Exception;
public void setCriarUserObjects(Parent root, User user);
public void criarUserStartUI(User user) throws Exception;
}
I have this subclass of Views:
public class UserViewImpl extends Views<UserController> implements UserView{
...
And i have this class:
public class UserController {
private UserView view;
private UserDAOImpl model;
public UserController(UserView view, UserDAOImpl model) {
this.model = model;
this.view = view;
view.setController(this);
this.model.addObserver(view);
}
...
What is the best solution for this problem?
Should i put together Views and UserView? (The problem for this solution is i will have more views, for example i have ParqueView and ParqueViewImpl, that basically will have the same methods as Views, so there would be repeated code and i want to avoid that)
The main problem is that inside my UserController i pass as parameter UserView, which does not have access to super class methods, and i need to access setController which is located in Views class, it doesnt make sense to change the type of UserView to Views in userController because of the MVC
java interface subclass superclass
asked Dec 31 '18 at 18:50
Hugo ModestoHugo Modesto
188
What is the best solution for this problem?
This is the superClass
public class Views<T> {
private T controller;
public Views() {
}
public Stage getStage(Node object){
return (Stage) object.getScene().getWindow();
}
public T getController(){
return controller;
}
public void setController(T controller){
this.controller = controller;
}
}
I have this interface:
public interface UserView extends Observer{
public void setLoginObjects(Parent root);
public void loginStartUI() throws Exception;
public void setCriarUserObjects(Parent root, User user);
public void criarUserStartUI(User user) throws Exception;
}
I have this subclass of Views:
public class UserViewImpl extends Views<UserController> implements UserView{
...
And i have this class:
public class UserController {
private UserView view;
private UserDAOImpl model;
public UserController(UserView view, UserDAOImpl model) {
this.model = model;
this.view = view;
view.setController(this);
this.model.addObserver(view);
}
...
What is the best solution for this problem?
Should i put together Views and UserView? (The problem for this solution is i will have more views, for example i have ParqueView and ParqueViewImpl, that basically will have the same methods as Views, so there would be repeated code and i want to avoid that)
The main problem is that inside my UserController i pass as parameter UserView, which does not have access to super class methods, and i need to access setController which is located in Views class, it doesnt make sense to change the type of UserView to Views in userController because of the MVC
java interface subclass superclass
java interface subclass superclass
asked Dec 31 '18 at 18:50
Hugo ModestoHugo Modesto
188
asked Dec 31 '18 at 18:50
Hugo ModestoHugo Modesto
188
edited Dec 31 '18 at 19:02
Hugo Modesto
asked Dec 31 '18 at 18:50
Hugo ModestoHugo Modesto
188
asked Dec 31 '18 at 18:50
Hugo ModestoHugo Modesto
188
asked Dec 31 '18 at 18:50
Hugo ModestoHugo Modesto
188
188
2
"What is the best solution for this problem?" - You never explained what the problem is (the title does not suffice).
– Jacob G.
Dec 31 '18 at 18:53
WouldParqueViewalso have/need the methods fromUserView?
– user7
Dec 31 '18 at 18:55
@user7 no, ParqueView needs the methods from Views
– Hugo Modesto
Dec 31 '18 at 18:56
@JacobG. sorry i though the problem was pretty obvious, ill edit the post!
– Hugo Modesto
Dec 31 '18 at 18:56
You could make View an interface and makeUserViewimplement it?
– user7
Dec 31 '18 at 19:01
|
show 4 more comments
2
"What is the best solution for this problem?" - You never explained what the problem is (the title does not suffice).
– Jacob G.
Dec 31 '18 at 18:53
WouldParqueViewalso have/need the methods fromUserView?
– user7
Dec 31 '18 at 18:55
@user7 no, ParqueView needs the methods from Views
– Hugo Modesto
Dec 31 '18 at 18:56
@JacobG. sorry i though the problem was pretty obvious, ill edit the post!
– Hugo Modesto
Dec 31 '18 at 18:56
You could make View an interface and makeUserViewimplement it?
– user7
Dec 31 '18 at 19:01
2
2
"What is the best solution for this problem?" - You never explained what the problem is (the title does not suffice).
– Jacob G.
Dec 31 '18 at 18:53
"What is the best solution for this problem?" - You never explained what the problem is (the title does not suffice).
– Jacob G.
Dec 31 '18 at 18:53
Would
ParqueView also have/need the methods from UserView?– user7
Dec 31 '18 at 18:55
Would
ParqueView also have/need the methods from UserView?– user7
Dec 31 '18 at 18:55
@user7 no, ParqueView needs the methods from Views
– Hugo Modesto
Dec 31 '18 at 18:56
@user7 no, ParqueView needs the methods from Views
– Hugo Modesto
Dec 31 '18 at 18:56
@JacobG. sorry i though the problem was pretty obvious, ill edit the post!
– Hugo Modesto
Dec 31 '18 at 18:56
@JacobG. sorry i though the problem was pretty obvious, ill edit the post!
– Hugo Modesto
Dec 31 '18 at 18:56
You could make View an interface and make
UserView implement it?– user7
Dec 31 '18 at 19:01
You could make View an interface and make
UserView implement it?– user7
Dec 31 '18 at 19:01
|
show 4 more comments
1 Answer
1
active
oldest
votes
It looks like you do not need generics here. Simply using an interface should suffice.
Create a Controller interface, which your two controllers will implement. Then you can get rid of the <T> entirely and use this interface instead.
answered Dec 31 '18 at 19:08
Joe CJoe C
11.5k62543
add a comment |
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1 Answer
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1 Answer
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oldest
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It looks like you do not need generics here. Simply using an interface should suffice.
Create a Controller interface, which your two controllers will implement. Then you can get rid of the <T> entirely and use this interface instead.
answered Dec 31 '18 at 19:08
Joe CJoe C
11.5k62543
add a comment |
It looks like you do not need generics here. Simply using an interface should suffice.
Create a Controller interface, which your two controllers will implement. Then you can get rid of the <T> entirely and use this interface instead.
answered Dec 31 '18 at 19:08
Joe CJoe C
11.5k62543
add a comment |
It looks like you do not need generics here. Simply using an interface should suffice.
Create a Controller interface, which your two controllers will implement. Then you can get rid of the <T> entirely and use this interface instead.
answered Dec 31 '18 at 19:08
Joe CJoe C
11.5k62543
It looks like you do not need generics here. Simply using an interface should suffice.
Create a Controller interface, which your two controllers will implement. Then you can get rid of the <T> entirely and use this interface instead.
answered Dec 31 '18 at 19:08
Joe CJoe C
11.5k62543
answered Dec 31 '18 at 19:08
Joe CJoe C
11.5k62543
answered Dec 31 '18 at 19:08
Joe CJoe C
11.5k62543
answered Dec 31 '18 at 19:08
Joe CJoe C
11.5k62543
11.5k62543
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2
"What is the best solution for this problem?" - You never explained what the problem is (the title does not suffice).
– Jacob G.
Dec 31 '18 at 18:53
Would
ParqueViewalso have/need the methods fromUserView?– user7
Dec 31 '18 at 18:55
@user7 no, ParqueView needs the methods from Views
– Hugo Modesto
Dec 31 '18 at 18:56
@JacobG. sorry i though the problem was pretty obvious, ill edit the post!
– Hugo Modesto
Dec 31 '18 at 18:56
You could make View an interface and make
UserViewimplement it?– user7
Dec 31 '18 at 19:01