Just put an empty ("abstract") method in your base class, which your subclasses will use to get the path.

package BaseConf;

my $Conf;

sub _load_config {
    my $self = shift;
    my $conf_file = $self->config_file_path;
    croak "unable to find $conf_file" 
      unless -e $conf_file and -r $conf_file;

    $Conf = Config::Tiny->read( $conf_file );
  croak "read config file '$conf_file' failed: $Config::Tiny::errstr" 
      unless $Conf;
}


sub config_file_path { 
    croak "config_file_path must be provided by subclass.";
}

...

package MyConf;

use base 'BaseConf';

sub config_file_path { 
    return '/path/to/conf.file';
}

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In reply to Re: need some OO help by friedo
in thread need some OO help by Qiang

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