Theoretical object oriented design question

[elrathia]

Hi,

I am just getting into the design of some software that will take either one or two numbers and perform identical operations on them. It will then create a label that will be different depending on whether 1 or 2 serial numbers are used.

In the example it looks like I could make a vehicle class that would contain the serial number, and child classes for car, truck and boat that would define how the sticker was laid out.

The trouble I am having is that the control for serial number 1 and serial number 2 need to accept any of the three numbers for car truck and boat.

So I am not sure how to build classes to cover this, and what design pattern would be best.

So I am looking for ideas.

I have no real code yet to post, and a lot of the attributes are confidential, which is why I made the simple diagram.

[Ben]

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Factory Pattern

It basiclly uses a case sctructure to to select a Class constant of the proper type.

Have fun!

Ben