Collections specify pointers or not

[BlackPopaz]

Hello,
This is a presales question.
How can I specify, if A has several B, where in EA can I decide for if I want :
std::vector<B> or std::vector<B*> or std::vector<std::shared_ptr<B> > ?

Of course, it depends of the classes, in some cases, I want pointers and sometimes not.
Thanks

[qwerty]

I'm guessing you are talking about some Cxx stuff and how to model that with EA? Looks like template binding. Not sure, though.

q.

[BlackPopaz]

Well, I want something really basic :

Code: [Select]

#ifndef _A_H
#define _A_H

#include "B.h" // or // class B;
#include <memory>

class A {
   
private:
    std::vector<B> m_B; // choice 1
    std::vector<B*> m_B; // choice 2
    std::vector<std::shared_ptr<B> > m_B; // choice 3

};

#endif //_BAR_H
Where can I select if I want choice 1, 2, or 3?

[Geert Bellekens]

Check Configure | Model | Options | Source code Engineering | C(++)

Loot at the settings here and the ones behind the button Collection Classes


Geert

[BlackPopaz]

Hello,
I have checked already and I wrote std::vector<#TYPE#> in the default collection class.
But it doesn't say if the Type is a pointer, a smart pointer or a standard object.

And as I said, this depends of the classes in the class diagram, some require pointers, some not.
Am I missing something?

[BlackPopaz]

Are there people working for EA on this forum to help?
I am very surprised not to find any help for this very basic question

[qwerty]

Obviously none with obligation. There are a couple (handful?) of Sparxians reading and posting here.

q.

[Eve]

Hello,
I have checked already and I wrote std::vector<#TYPE#> in the default collection class.
But it doesn't say if the Type is a pointer, a smart pointer or a standard object.

And as I said, this depends of the classes in the class diagram, some require pointers, some not.
Am I missing something?

In you example code, the collection class would be std::vector<#TYPE#>, std::vector<#TYPE#*> or std::vector<std::shared_ptr<#TYPE#> >.

There's also a field on the association role page that allows you to specify an alternative to your default.

[BlackPopaz]

Hello,
I have checked already and I wrote std::vector<#TYPE#> in the default collection class.
But it doesn't say if the Type is a pointer, a smart pointer or a standard object.

And as I said, this depends of the classes in the class diagram, some require pointers, some not.
Am I missing something?

In you example code, the collection class would be std::vector<#TYPE#>, std::vector<#TYPE#*> or std::vector<std::shared_ptr<#TYPE#> >.

There's also a field on the association role page that allows you to specify an alternative to your default.

Thanks Eve That's what I am looking for. Where can you find this field please? When I select the aggregration connector of my diagram, I can't see such option.
Also, where can i change the name of the aggregation "attribute"pleae? It writes std::vector<B> m_B and I would like m_Bs as there are many.

[Eve]

Open the association properties and go to the source or target tab. The top entry in the advanced group of role properties is member type. That's the one that allows a per-role member type to be assigned.

I you want a specific role name (including a plural) there's a big field at the top of the dialog for that too.