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package Memoize::Storable;
=head1 NAME
Memoize::Storable - store Memoized data in Storable database
=head1 DESCRIPTION
See L<Memoize>.
=cut
use Storable ();
$VERSION = '1.03';
$Verbose = 0;
sub TIEHASH {
require Carp if $Verbose;
my $package = shift;
my $filename = shift;
my $truehash = (-e $filename) ? Storable::retrieve($filename) : {};
my %options;
print STDERR "Memoize::Storable::TIEHASH($filename, @_)\n" if $Verbose;
@options{@_} = ();
my $self =
{FILENAME => $filename,
H => $truehash,
OPTIONS => \%options
};
bless $self => $package;
}
sub STORE {
require Carp if $Verbose;
my $self = shift;
print STDERR "Memoize::Storable::STORE(@_)\n" if $Verbose;
$self->{H}{$_[0]} = $_[1];
}
sub FETCH {
require Carp if $Verbose;
my $self = shift;
print STDERR "Memoize::Storable::FETCH(@_)\n" if $Verbose;
$self->{H}{$_[0]};
}
sub EXISTS {
require Carp if $Verbose;
my $self = shift;
print STDERR "Memoize::Storable::EXISTS(@_)\n" if $Verbose;
exists $self->{H}{$_[0]};
}
sub DESTROY {
require Carp if $Verbose;
my $self= shift;
print STDERR "Memoize::Storable::DESTROY(@_)\n" if $Verbose;
if (exists $self->{OPTIONS}{'nstore'}) {
Storable::nstore($self->{H}, $self->{FILENAME});
} else {
Storable::store($self->{H}, $self->{FILENAME});
}
}
sub FIRSTKEY {
'Fake hash from Memoize::Storable';
}
sub NEXTKEY {
undef;
}
1;