One of your questions:

Finally I do not want to create separate file for each single class.

AFAIK that's just how perl classes work, so nothing you can do about it.

Also, the preferred way to call constructors is Class->new instead of new Class

How about something like this:

sub condition
{
    my ($self,$condition) = @_;
    if (!defined $condition) { die "Need condition name"; }

    if (! defined $self->{_condition}{$condition}) {
      $self->{_condition}{$condition} = Condition->new();
    }

    return $self->{_condition}{$condition};
};

[download]

Update: Removed bogus answer to his condition question

Update 2: Added something at least vaguely correct

In reply to Re: OO Perl: Nested classes question by Crackers2
in thread OO Perl: Nested classes question by TheMarty

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