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1 | package Memoize::Storable; |
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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 | |
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13 | use Storable (); |
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14 | $VERSION = 0.65; |
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15 | $Verbose = 0; |
16 | |
17 | sub TIEHASH { |
18 | require Carp if $Verbose; |
19 | my $package = shift; |
20 | my $filename = shift; |
21 | my $truehash = (-e $filename) ? Storable::retrieve($filename) : {}; |
22 | my %options; |
23 | print STDERR "Memoize::Storable::TIEHASH($filename, @_)\n" if $Verbose; |
24 | @options{@_} = (); |
25 | my $self = |
26 | {FILENAME => $filename, |
27 | H => $truehash, |
28 | OPTIONS => \%options |
29 | }; |
30 | bless $self => $package; |
31 | } |
32 | |
33 | sub STORE { |
34 | require Carp if $Verbose; |
35 | my $self = shift; |
36 | print STDERR "Memoize::Storable::STORE(@_)\n" if $Verbose; |
37 | $self->{H}{$_[0]} = $_[1]; |
38 | } |
39 | |
40 | sub FETCH { |
41 | require Carp if $Verbose; |
42 | my $self = shift; |
43 | print STDERR "Memoize::Storable::FETCH(@_)\n" if $Verbose; |
44 | $self->{H}{$_[0]}; |
45 | } |
46 | |
47 | sub EXISTS { |
48 | require Carp if $Verbose; |
49 | my $self = shift; |
50 | print STDERR "Memoize::Storable::EXISTS(@_)\n" if $Verbose; |
51 | exists $self->{H}{$_[0]}; |
52 | } |
53 | |
54 | sub DESTROY { |
55 | require Carp if $Verbose; |
56 | my $self= shift; |
57 | print STDERR "Memoize::Storable::DESTROY(@_)\n" if $Verbose; |
58 | if ($self->{OPTIONS}{'nstore'}) { |
59 | Storable::nstore($self->{H}, $self->{FILENAME}); |
60 | } else { |
61 | Storable::store($self->{H}, $self->{FILENAME}); |
62 | } |
63 | } |
64 | |
65 | sub FIRSTKEY { |
66 | 'Fake hash from Memoize::Storable'; |
67 | } |
68 | |
69 | sub NEXTKEY { |
70 | undef; |
71 | } |
72 | 1; |