Commit | Line | Data |
---|---|---|
6fe26b29 | 1 | package DBM::Deep::Hash; |
2 | ||
460b1067 | 3 | use 5.6.0; |
4 | ||
6fe26b29 | 5 | use strict; |
460b1067 | 6 | use warnings; |
6fe26b29 | 7 | |
86867f3a | 8 | our $VERSION = q(0.99_01); |
9 | ||
6fe26b29 | 10 | use base 'DBM::Deep'; |
11 | ||
596e9574 | 12 | sub _get_self { |
a4e2db58 | 13 | eval { local $SIG{'__DIE__'}; tied( %{$_[0]} ) } || $_[0] |
596e9574 | 14 | } |
15 | ||
f9c33187 | 16 | sub _repr { shift;return { @_ } } |
17 | ||
18 | sub _import { | |
19 | my $self = shift; | |
20 | my ($struct) = @_; | |
21 | ||
22 | eval { | |
23 | local $SIG{'__DIE__'}; | |
24 | foreach my $key (keys %$struct) { | |
25 | $self->put($key, $struct->{$key}); | |
26 | } | |
27 | }; if ($@) { | |
28 | $self->_throw_error("Cannot import: type mismatch"); | |
29 | } | |
30 | ||
31 | return 1; | |
32 | } | |
33 | ||
6fe26b29 | 34 | sub TIEHASH { |
35 | ## | |
36 | # Tied hash constructor method, called by Perl's tie() function. | |
37 | ## | |
38 | my $class = shift; | |
0ca7ea98 | 39 | my $args = $class->_get_args( @_ ); |
6fe26b29 | 40 | |
41 | $args->{type} = $class->TYPE_HASH; | |
42 | ||
43 | return $class->_init($args); | |
44 | } | |
45 | ||
cb79ec85 | 46 | sub FETCH { |
47 | my $self = shift->_get_self; | |
460b1067 | 48 | my $key = ($self->_fileobj->{filter_store_key}) |
49 | ? $self->_fileobj->{filter_store_key}->($_[0]) | |
cb79ec85 | 50 | : $_[0]; |
51 | ||
359a01ac | 52 | return $self->SUPER::FETCH( $key, $_[0] ); |
cb79ec85 | 53 | } |
54 | ||
81d3d316 | 55 | sub STORE { |
56 | my $self = shift->_get_self; | |
460b1067 | 57 | my $key = ($self->_fileobj->{filter_store_key}) |
58 | ? $self->_fileobj->{filter_store_key}->($_[0]) | |
81d3d316 | 59 | : $_[0]; |
60 | my $value = $_[1]; | |
61 | ||
359a01ac | 62 | return $self->SUPER::STORE( $key, $value, $_[0] ); |
81d3d316 | 63 | } |
64 | ||
baa27ab6 | 65 | sub EXISTS { |
66 | my $self = shift->_get_self; | |
460b1067 | 67 | my $key = ($self->_fileobj->{filter_store_key}) |
68 | ? $self->_fileobj->{filter_store_key}->($_[0]) | |
baa27ab6 | 69 | : $_[0]; |
70 | ||
71 | return $self->SUPER::EXISTS( $key ); | |
72 | } | |
73 | ||
feaf1e6f | 74 | sub DELETE { |
75 | my $self = shift->_get_self; | |
460b1067 | 76 | my $key = ($self->_fileobj->{filter_store_key}) |
77 | ? $self->_fileobj->{filter_store_key}->($_[0]) | |
feaf1e6f | 78 | : $_[0]; |
79 | ||
359a01ac | 80 | return $self->SUPER::DELETE( $key, $_[0] ); |
feaf1e6f | 81 | } |
82 | ||
6fe26b29 | 83 | sub FIRSTKEY { |
84 | ## | |
85 | # Locate and return first key (in no particular order) | |
86 | ## | |
eea0d863 | 87 | my $self = shift->_get_self; |
6fe26b29 | 88 | |
89 | ## | |
6fe26b29 | 90 | # Request shared lock for reading |
91 | ## | |
92 | $self->lock( $self->LOCK_SH ); | |
93 | ||
72e315ac | 94 | my $result = $self->_engine->get_next_key($self); |
6fe26b29 | 95 | |
96 | $self->unlock(); | |
97 | ||
460b1067 | 98 | return ($result && $self->_fileobj->{filter_fetch_key}) |
99 | ? $self->_fileobj->{filter_fetch_key}->($result) | |
6fe26b29 | 100 | : $result; |
101 | } | |
102 | ||
103 | sub NEXTKEY { | |
104 | ## | |
105 | # Return next key (in no particular order), given previous one | |
106 | ## | |
eea0d863 | 107 | my $self = shift->_get_self; |
6fe26b29 | 108 | |
460b1067 | 109 | my $prev_key = ($self->_fileobj->{filter_store_key}) |
110 | ? $self->_fileobj->{filter_store_key}->($_[0]) | |
eea0d863 | 111 | : $_[0]; |
6fe26b29 | 112 | |
72e315ac | 113 | my $prev_md5 = $self->_engine->{digest}->($prev_key); |
6fe26b29 | 114 | |
115 | ## | |
6fe26b29 | 116 | # Request shared lock for reading |
117 | ## | |
118 | $self->lock( $self->LOCK_SH ); | |
119 | ||
72e315ac | 120 | my $result = $self->_engine->get_next_key( $self, $prev_md5 ); |
6fe26b29 | 121 | |
122 | $self->unlock(); | |
123 | ||
460b1067 | 124 | return ($result && $self->_fileobj->{filter_fetch_key}) |
125 | ? $self->_fileobj->{filter_fetch_key}->($result) | |
6fe26b29 | 126 | : $result; |
127 | } | |
128 | ||
129 | ## | |
130 | # Public method aliases | |
131 | ## | |
f9c33187 | 132 | sub first_key { (shift)->FIRSTKEY(@_) } |
133 | sub next_key { (shift)->NEXTKEY(@_) } | |
134 | ||
135 | sub _copy_node { | |
898fd1fd | 136 | my $self = shift; |
f9c33187 | 137 | my ($db_temp) = @_; |
138 | ||
139 | my $key = $self->first_key(); | |
140 | while ($key) { | |
141 | my $value = $self->get($key); | |
142 | $self->_copy_value( \$db_temp->{$key}, $value ); | |
143 | $key = $self->next_key($key); | |
144 | } | |
145 | ||
146 | return 1; | |
147 | } | |
6fe26b29 | 148 | |
149 | 1; | |
150 | __END__ |