Collection::Utl::Base - abstract class.

 Collection::Utl::Base - abstract class.

    use Collection::Utl::Base;
    @Collection::ISA = qw(Collection::Utl::Base);

package Collection::Utl::Base;

#$Id: Base.pm 336 2008-09-26 11:54:06Z zag $

use strict;
use warnings;
use strict;
use Carp;
use Data::Dumper;
require Exporter;
@Collection::Utl::Base::ISA    = qw(Exporter);
@Collection::Utl::Base::EXPORT = qw(attributes);
$Collection::Utl::Base::VERSION = '0.01';

sub attributes {
    my ($pkg) = caller;
    no strict;
    croak "Error: attributes() invoked multiple times"
      if scalar @{"${pkg}::__ATTRIBUTES__"};

    @{"${pkg}::__ATTRIBUTES__"} = @_;
    my $code = "";
    foreach my $attr (@_) {
        if ( UNIVERSAL::can( $pkg, "$attr" ) ) {
            next;
        }
        $code .= _define_accessor( $pkg, $attr );
    }
    eval $code;
}

sub _define_accessor {
    my ( $pkg, $attr ) = @_;
    my $code = qq{
        package $pkg;
        sub $attr {                                      # Accessor ...
            my \$self=shift;
            \@_ ? \$self->{ Var }->{ $attr } = shift : \$self->{ Var }->{ $attr };
        }
    };
    $code;
}

sub _deprecated {
    my $self       = shift;
    my $new_method = shift;
    my ( $old_method, $called_from_str, $called_from_method ) =
      ( ( caller(1) )[3], ( caller(1) )[2], ( caller(2) )[3] );
    print STDERR 
"called deprecated method $old_method from $called_from_method at line $called_from_str. Use method $new_method instead."
    ;
}

sub new {
    my $class = shift;
    my $self  = {};
    my $stat;
    bless( $self, $class );
    return ( $stat = $self->_init(@_) ) ? $self : $stat;
}

sub _init {
    my $self = shift;
    return 1;
}


# Preloaded methods go here.

1;
__END__