Commit | Line | Data |
a0cb3900 |
1 | package Memoize::Storable; |
9038e305 |
2 | |
3 | =head1 NAME |
4 | |
5 | Memoize::Storable - store Memoized data in Storable database |
6 | |
7 | =head1 DESCRIPTION |
8 | |
9 | See L<Memoize>. |
10 | |
11 | =cut |
12 | |
a0cb3900 |
13 | use Storable (); |
14 | $Verbose = 0; |
15 | |
16 | sub TIEHASH { |
17 | require Carp if $Verbose; |
18 | my $package = shift; |
19 | my $filename = shift; |
20 | my $truehash = (-e $filename) ? Storable::retrieve($filename) : {}; |
21 | my %options; |
22 | print STDERR "Memoize::Storable::TIEHASH($filename, @_)\n" if $Verbose; |
23 | @options{@_} = (); |
24 | my $self = |
25 | {FILENAME => $filename, |
26 | H => $truehash, |
27 | OPTIONS => \%options |
28 | }; |
29 | bless $self => $package; |
30 | } |
31 | |
32 | sub STORE { |
33 | require Carp if $Verbose; |
34 | my $self = shift; |
35 | print STDERR "Memoize::Storable::STORE(@_)\n" if $Verbose; |
36 | $self->{H}{$_[0]} = $_[1]; |
37 | } |
38 | |
39 | sub FETCH { |
40 | require Carp if $Verbose; |
41 | my $self = shift; |
42 | print STDERR "Memoize::Storable::FETCH(@_)\n" if $Verbose; |
43 | $self->{H}{$_[0]}; |
44 | } |
45 | |
46 | sub EXISTS { |
47 | require Carp if $Verbose; |
48 | my $self = shift; |
49 | print STDERR "Memoize::Storable::EXISTS(@_)\n" if $Verbose; |
50 | exists $self->{H}{$_[0]}; |
51 | } |
52 | |
53 | sub DESTROY { |
54 | require Carp if $Verbose; |
55 | my $self= shift; |
56 | print STDERR "Memoize::Storable::DESTROY(@_)\n" if $Verbose; |
57 | if ($self->{OPTIONS}{'nstore'}) { |
58 | Storable::nstore($self->{H}, $self->{FILENAME}); |
59 | } else { |
60 | Storable::store($self->{H}, $self->{FILENAME}); |
61 | } |
62 | } |
63 | |
64 | sub FIRSTKEY { |
65 | 'Fake hash from Memoize::Storable'; |
66 | } |
67 | |
68 | sub NEXTKEY { |
69 | undef; |
70 | } |
71 | 1; |