CODEWITHSUNDEEP
classumldiagram
f4r4
f4r4

Reputation: 573

How to code UML class diagram which has association classes

       0..*                    1..*
+-------+                       +--------+      
|Invoice|_______________________|Products|
+-------+           |           +--------+
|inID   |           |           |proID   |
|inDate |           |           | Qty    |
+-------+           |           | Price  |
                    |           +--------+
               +-----------+
               |LineProduct|
               +-----------+
               | Qty       |
               | salePrice |
               +-----------+

Is this coding correct for the above class diagram ?

Class Invoice 
{
 inID:int;
 inDate:Date;
}

Class LineProduct 
{
 Qty:int;
 salePrice:int;
 //inID:int;  <-- this is what I did but I am wrong 
 //prodID:int; <-- this is what I did but I am wrong 
}

Class Products
{
 prodID:int;
 Qty:int;
 Price:int;
}

Now for example if an invoice consists two products I have to pass instance of objects to the DB functions like this 

invoiceTable.saveInvoice(invoice:Invoice);
lineproductTable.saveLine( product instance 1 );
lineproductTable.saveLine( product instance 2 );

now again another confusion that the line product table will have inID and proID columns but how to pass an object which will have inID and prod ID ?

PS:Sorry I am stuck in low rep I couldnt post an image and explain my confusion

Upvotes: 2

Views: 1451

Answers (1)

Kelly S. French
Kelly S. French

Reputation: 12334

I think you had it right in the first place.

//inID:int;  <-- this is what I did but I am wrong 
//prodID:int; <-- this is what I did but I am wrong

Uncomment those lines. It's the only way to associate the product with the invoice.

Upvotes: 2

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