MyTest::Base.pm

package MyTest::Base;
use strict;
no autovivification;

sub new {
    bless {}, shift;
}

sub  chkAccessRight {
    my $self = shift;
    print "Base chkAccessRight @_$/";
    my ( $usr, $service ) = @_ ;
    return 1;
}

sub tryAccess {
    my $self = shift;
    print "Base tryAccess @_$/";
    my ( $usr, $service ) = @_ ;
    return $self -> chkAccessRight (  $usr => $service ) ;
}

1;
[download]

MyTest::Lite.pm

package MyTest::Lite;
no autovivification;
use parent 'MyTest::Base';
use strict;

sub new {
    my $self = shift;
    my $parent = $self -> SUPER::new ;
    return bless { Parent => $parent, @_} , $self;
}

sub chkAccessRight {
    my $self = shift;
    print "Lite chkAccessRight @_$/";    
    if ( $self -> {Usr} ) {
        return $self->{Parent}->SUPER::chkAccessRight ( $self->{Usr} ,
+ shift ) ;
    }
    else {
        return $self->{Parent}->SUPER::chkAccessRight ( @_ ) ;
    }    
    return 1;
}

sub tryAccess {
    my $self = shift;
    print "Lite tryAccess @_$/";
    if ( $self -> {Usr} ) {
        return $self->{Parent}->SUPER::tryAccess ( $self->{Usr} , shif
+t ) ;
    }
    else {
        return $self->{Parent}->SUPER::tryAccess ( @_) ;
    }    
}

1;
[download]

main.pl

use MyTest::Lite;
use strict;

my $lite = new MyTest::Lite (  Usr => 'guest') ;

$lite -> chkAccessRight ( "app2" ) ;
print "======================$/";
$lite -> tryAccess (  "app1"  );
[download]

And run the main.pl, I got this output:

Can't call method "SUPER::chkAccessRight" on an undefined value at MyT
+est/Lite.pm line 19.
Lite chkAccessRight app2
Base chkAccessRight guest app2
======================
Lite tryAccess app1
Base tryAccess guest app1
Lite chkAccessRight guest app1
[download]

The above codes are snapped (and modified) from my real project, and what I am trying to do is to re-interface the class accessing behavior.

From the last line of output, this is obviously the chkAccessRight() is calling to my overridden sub from MyTest::Lite but I would expect it calls the chkAccessRight() from MyTest::Base

I already have a solution though:
1. Not to use the same method name , so there will be no confusion about the SUPER::, and perl will not attempt to call the overridden method (from Base). BUT, I hope I can maintain the same method name as it seem most appropriate

2. Implement $lite -> tryAccess (  "app1"  ); within the MyTest::Lite class, ie. I dont call the SUPER::tryAccess. BUT some other methods are with more relevance to it's SUPER::* methods, so I like to remain calling the methods' super class for their jobs.

It there any better workaround out there ?

Thanks in advance!

================================================

UPDATE & CONCLUSION:

I gave up on the inheritance way, and use the sub AUTOLOAD to return eval "\$self->\{Parent}->$subName\(\@_))". So there will be no more SUPER:: is needed.