File Coverage

blib/lib/Geo/Coder/Cache.pm

Criterion	Covered	Total	%
statement	12	37	32.4
branch	0	8	0.0
condition			n/a
subroutine	4	9	44.4
pod	2	2	100.0
total	18	56	32.1

package Geo::Coder::Cache;
use base 'Cache::FileCache';
use strict;

use vars qw($VERSION $AUTOLOAD);

$VERSION = '0.06';

our $HOME = $ENV{'HOME'} || $ENV{'LOGDIR'};
our %default_cache_args = (
    'namespace' => 'geo-coder-cache',
    'cache_root' => "$HOME/.cache",
    'default_expires_in' => 86400);

sub new {
  my($class, %param) = @_;
  my $geocoder = delete $param{geocoder} or Carp::croak("Usage: new(geocoder => \$geocoder)");
  ($default_cache_args{namespace} = 'geo-coder-cache-' . lc ref($geocoder)) =~ s{::}{-}g;
  my %cache_args = (%default_cache_args, %param);
  my $self = $class->SUPER::new(\%cache_args);
  $self->{geocoder} = $geocoder;
  return $self;
}

# delegate all other method calls the the cache object.
sub AUTOLOAD
{
    my $method = substr($AUTOLOAD, rindex($AUTOLOAD, '::')+2);

    # We create the function here so that it will not need to be
    # autoloaded the next time.
    no strict 'refs';
    *$method = sub {
      my $self = shift;
      $self->{'geocoder'}->$method(@_);
    };
    goto &$method;
}

sub DESTROY {}  # avoid AUTOLOADing it

sub geocode {
  my $self = shift;
  my %param;
  if (@_ % 2 == 0) {
    %param = @_;
  } else {
    $param{location} = shift;
  }
  if ($param{location}) {
    my $location = $self->get($param{location});
    if (defined($location)) {
      return $location;
    }
  }
  my $location = $self->{geocoder}->geocode(%param);
  $self->set($param{location}, $location);
  return $location;
}

1;
__END__