I think you've got something wrong about that subclassing. The superclass doesn't know its subclasses, only the subclass knows its superclasses as they are in @ISA. The base pragma only puts a class into @ISA.

Now, whenever a method in the subclass is called and not found there, it is searched for in all classes that stand in @ISA of that package:

package Superclass;
sub foo { print "Superclass::foo( @_ )\n" }
sub bar { print "Superclass::bar( @_ )\n" }
package Subclass;
use base 'Superclass';
sub bar { print "Subclass::bar( @_ )\n" }
package main;
Subclass->foo; #Superclass::foo( Subclass )
Subclass->bar; #Subclass::bar( Subclass )

[download]

If you make Class::DBI create a 'sessions()' method for "Super::Person" and "Sub::Person" has "Super::Person" in its @ISA, you can be sure that perl will look for 'sessions()' in "Super::Person" if it doesn't find it in "Sub::Person", but the first parameter passed to 'sessions' will be "Sub::Person". Just get rid of that __PACKAGE__, it only makes you unflexible.

--
http://fruiture.de

In reply to Re: __PACKAGE__ in subclass by fruiture
in thread __PACKAGE__ in subclass by thpfft

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