Refers to structural definition of class unit in object-oriented languages.
Questions tagged [class-design]
1125 questions
0
votes
4 answers
IList- Collection Class accessing database
I have a database with Users.
Users have Items.
These Items can change actively.
How do you access the items in a collection type format?
For the user, I fill all the user properties at the time of instantiation.
If I load the user's items at the…
Mike
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- 3
0
votes
1 answer
Declaration of function to generate vector of class with a vector of another class
I have 2 classes:
class Item;
class Component;
And I have a function to generate a vector of Items from a vector of Components
static vector- generateItemsFromComponents( vector
components )
{
vector- vi;
// ...
…
user3235674
0
votes
4 answers
What is the use of a C++ class containing an "implementation" and "interface" pointer to itself?
I'm studying some source codes and I'm just wondering why a class (or classes) is often implemented this way:
class EventHandler
{
...
EventDispatcher* m_Dispatcher;
virtual bool ProcEvent( EventHandler* Sender, int Task, int Event, void*…
jasonline
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0
votes
2 answers
Dealing with a null sub object in a class?
I have several classes
public class Person
{
public int Id{get;set;}
public string Name{get;set;}
public virtual Institution Institution{get; set;}
}
public class Institution
{
public int Id{get;set;}
public string…
John S
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0
votes
1 answer
Calling a static/shared method from a non-static/shared methd, good or bad?
Let's say for instance I have a class set up as such:
Class Foo
Private instanceVariable As Integer = 2
Public Shared Function Bar(ByVal localVariable as Integer) As Integer
Return localVariable * 2
End Function
Public…
Josh Braun
- 490
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- 16
0
votes
1 answer
First GUI, app organization
This is my first java swing application and I have some questions about the organization.
I need to create a application that after log in redirect the user to (let's call it) "Normal user page", "Admin Page" or "Super user page". After reading some…
0
votes
1 answer
class diagram Composition Relationship
Should the owner have an attribute of the owned object type in a class diagram composition relationship?
Or is having a key or related property considered a composition, too?
My example is:
I have two classes "user" and "image". The user logically…
MohamedAbbas
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- 4
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- 31
0
votes
4 answers
Best way of class design in Java: An example
Which is the best design for the below problem description :
A 'Student' has 4 Pens of colors Blue, Red, Green and Orange.
Here is Pen class-
Class Pen{
String color;
//Getters & setters
public write(){
// Write some thing using…
Sanjeev
- 425
- 10
- 17
0
votes
0 answers
Outside class or nested class?
I have a class as following:
public class A
{
public string P1 { get; set; }
public string P2 { get; set; }
public B b = new B();
public A()
{
b.B1 = ...
b.B2 = ...
}
}
Where class B is outside (not nested)…
tesicg
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0
votes
1 answer
How to define base class that handles database connection?
I have a console application with a base class as following:
public abstract class PaymentSystemBase : IPayable
{
private SqlConnection _connection;
protected PaymentSystemBase()
{
CreateDatabaseConnection();
}
…
tesicg
- 3,971
- 16
- 62
- 121
0
votes
4 answers
Class design: clearing state
I am designing a class library which will be used like this:
Engine eng = new Engine();
eng.AddPart(part).AddPart(otherPart).Run();
The problem with the class is that the parts are kept by the engine so if you want Run it with some other parts…
Giorgi
- 30,270
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0
votes
3 answers
How should I refactor my class?
Basically I have a class that sends a SOAP request for room information receives a response, it can only handle one room at a time.. eg:
class roomParser {
private $numRooms;
private $adults;
private $dailyPrice;
public function…
meder omuraliev
- 183,342
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0
votes
2 answers
Should a Form object posses the dual responsibilities of displaying and processing?
I have a prototype with a Form class which auto-generates an HTML form, and now I am plugging some processing functionality into the prototype.
Should the same Form class that generates the HTML for the form also process the form? Doing so would…
Chad Johnson
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0
votes
3 answers
Inheritance with composition
I am designing a system, I have not yet implemented first I am just diagraming it and then will code it, I want to ask one simple question:
What to do when we are using both inheritance and composition at the same time?
For example, in a hotel,…
user3215228
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0
votes
4 answers
Use class level field or method variable?
I have a object I initialize in a method like :
public void something()
{
Dummy obj = Factory.getDummy();
method2(obj);
}
now, this Dummy object is to be used by many methods
public void method2(Dummy obj)
{
method2(obj);
…
codingenious
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