another inheritance question

[Craig Buchanan]

I have a class named "Generic" and a second class named "Specific" which
inherits from Generic. I have a Save method in the Generic class. I don't
have an override in the Specific class. If I call Specific.Save, is there a
way for the Generic class's logic to route back to methods of the Specific
class?

Thanks,

Craig Buchanan

[Dominique Vandensteen]

no
a eventual solution is

public mustinherit class generic
protected sub Save(someinfo as object)
....
end save
public mustoverride sub Save()
end class

public class specific
inherits generic
public overrides sub Save()
save(mySpecificExtraInfoObject)
end sub
end class
hope this helps

dominique
"Craig Buchanan" <so*****@somewhere.com> wrote in message
news:e3*************@TK2MSFTNGP11.phx.gbl...

I have a class named "Generic" and a second class named "Specific" which
inherits from Generic. I have a Save method in the Generic class. I don't have an override in the Specific class. If I call Specific.Save, is there a way for the Generic class's logic to route back to methods of the Specific
class?

Thanks,

Craig Buchanan

[CJ Taylor]

Or you could call

mybase.save

"Dominique Vandensteen" <domi.vds_insert@tralala_tenforce.com> wrote in
message news:u9**************@tk2msftngp13.phx.gbl...

no
a eventual solution is

public mustinherit class generic
protected sub Save(someinfo as object)
...
end save
public mustoverride sub Save()
end class

public class specific
inherits generic
public overrides sub Save()
save(mySpecificExtraInfoObject)
end sub
end class
hope this helps

dominique
"Craig Buchanan" <so*****@somewhere.com> wrote in message
news:e3*************@TK2MSFTNGP11.phx.gbl...

I have a class named "Generic" and a second class named "Specific" which
inherits from Generic. I have a Save method in the Generic class. I don't

have an override in the Specific class. If I call Specific.Save, is there a

way for the Generic class's logic to route back to methods of the

Specific class?

Thanks,

Craig Buchanan

[Dominique Vandensteen]

if i understand correctly you cannot :-)

in generic.save (mybase.save) he needs info only available in specific
so specific has to pass something to generic...
-> mybase.save("stuff")
or i didn't understand correctly and i'm telling a lot of junk :-)

"CJ Taylor" <no****@blowgoats.com> wrote in message
news:10************@corp.supernews.com...

Or you could call

mybase.save

"Dominique Vandensteen" <domi.vds_insert@tralala_tenforce.com> wrote in
message news:u9**************@tk2msftngp13.phx.gbl...

no
a eventual solution is

public mustinherit class generic
protected sub Save(someinfo as object)
...
end save
public mustoverride sub Save()
end class

public class specific
inherits generic
public overrides sub Save()
save(mySpecificExtraInfoObject)
end sub
end class
hope this helps

dominique
"Craig Buchanan" <so*****@somewhere.com> wrote in message
news:e3*************@TK2MSFTNGP11.phx.gbl...

I have a class named "Generic" and a second class named "Specific" which inherits from Generic. I have a Save method in the Generic class. I

don't

have an override in the Specific class. If I call Specific.Save, is there

a

way for the Generic class's logic to route back to methods of the

Specific class?

Thanks,

Craig Buchanan

[Jay B. Harlow [MVP - Outlook]]

Craig,
In addition to Dominique's answer:

It sounds like what you want is a Template Method Pattern. (Dominique showed
a variation of a Template Method).

http://www.dofactory.com/Patterns/PatternTemplate.aspx

Another variation of the Template Method is:

Public MustInherit Class Generic

Public Sub Save()
BeforeSave()
' do the save
AfterSave()
End Sub

Protected MustOverride Sub BeforeSave()
Protected MustOverride Sub AfterSave()

End Class

Public Class Specific
Inherits Generic

Protected Overrides Sub BeforeSave
End Sub

Protected Overrides Sub AfterSave
End Sub

End Class

Alternative BeforeSave & AfterSave can be Overridable, allowing Generic to
offer a "default" implementation that Specific can replace if it needs to...

Of course BeforeSave & AfterSave could have parameters or be functions or
properties returning values.

Hope this helps
Jay

"Craig Buchanan" <so*****@somewhere.com> wrote in message
news:e3*************@TK2MSFTNGP11.phx.gbl...

I have a class named "Generic" and a second class named "Specific" which
inherits from Generic. I have a Save method in the Generic class. I don't have an override in the Specific class. If I call Specific.Save, is there a way for the Generic class's logic to route back to methods of the Specific
class?

Thanks,

Craig Buchanan