Commit | Line | Data |
6fe26b29 |
1 | package DBM::Deep::Hash; |
2 | |
460b1067 |
3 | use 5.6.0; |
4 | |
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5 | use strict; |
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6 | use warnings; |
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7 | |
c3aafc14 |
8 | our $VERSION = q(0.99_03); |
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9 | |
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10 | use base 'DBM::Deep'; |
11 | |
596e9574 |
12 | sub _get_self { |
a4e2db58 |
13 | eval { local $SIG{'__DIE__'}; tied( %{$_[0]} ) } || $_[0] |
596e9574 |
14 | } |
15 | |
12b96196 |
16 | #XXX Need to add a check here for @_ % 2 |
f9c33187 |
17 | sub _repr { shift;return { @_ } } |
18 | |
19 | sub _import { |
20 | my $self = shift; |
21 | my ($struct) = @_; |
22 | |
23 | eval { |
24 | local $SIG{'__DIE__'}; |
25 | foreach my $key (keys %$struct) { |
26 | $self->put($key, $struct->{$key}); |
27 | } |
28 | }; if ($@) { |
29 | $self->_throw_error("Cannot import: type mismatch"); |
30 | } |
31 | |
32 | return 1; |
33 | } |
34 | |
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35 | sub TIEHASH { |
36 | ## |
37 | # Tied hash constructor method, called by Perl's tie() function. |
38 | ## |
39 | my $class = shift; |
0ca7ea98 |
40 | my $args = $class->_get_args( @_ ); |
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41 | |
42 | $args->{type} = $class->TYPE_HASH; |
43 | |
44 | return $class->_init($args); |
45 | } |
46 | |
cb79ec85 |
47 | sub FETCH { |
48 | my $self = shift->_get_self; |
83371fe3 |
49 | my $key = ($self->_storage->{filter_store_key}) |
50 | ? $self->_storage->{filter_store_key}->($_[0]) |
cb79ec85 |
51 | : $_[0]; |
52 | |
359a01ac |
53 | return $self->SUPER::FETCH( $key, $_[0] ); |
cb79ec85 |
54 | } |
55 | |
81d3d316 |
56 | sub STORE { |
57 | my $self = shift->_get_self; |
83371fe3 |
58 | my $key = ($self->_storage->{filter_store_key}) |
59 | ? $self->_storage->{filter_store_key}->($_[0]) |
81d3d316 |
60 | : $_[0]; |
61 | my $value = $_[1]; |
62 | |
359a01ac |
63 | return $self->SUPER::STORE( $key, $value, $_[0] ); |
81d3d316 |
64 | } |
65 | |
baa27ab6 |
66 | sub EXISTS { |
67 | my $self = shift->_get_self; |
83371fe3 |
68 | my $key = ($self->_storage->{filter_store_key}) |
69 | ? $self->_storage->{filter_store_key}->($_[0]) |
baa27ab6 |
70 | : $_[0]; |
71 | |
72 | return $self->SUPER::EXISTS( $key ); |
73 | } |
74 | |
feaf1e6f |
75 | sub DELETE { |
76 | my $self = shift->_get_self; |
83371fe3 |
77 | my $key = ($self->_storage->{filter_store_key}) |
78 | ? $self->_storage->{filter_store_key}->($_[0]) |
feaf1e6f |
79 | : $_[0]; |
80 | |
359a01ac |
81 | return $self->SUPER::DELETE( $key, $_[0] ); |
feaf1e6f |
82 | } |
83 | |
6fe26b29 |
84 | sub FIRSTKEY { |
85 | ## |
86 | # Locate and return first key (in no particular order) |
87 | ## |
eea0d863 |
88 | my $self = shift->_get_self; |
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89 | |
90 | ## |
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91 | # Request shared lock for reading |
92 | ## |
93 | $self->lock( $self->LOCK_SH ); |
94 | |
40956c06 |
95 | my $result = $self->_engine->get_next_key($self->_storage->transaction_id, $self->_base_offset); |
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96 | |
97 | $self->unlock(); |
98 | |
83371fe3 |
99 | return ($result && $self->_storage->{filter_fetch_key}) |
100 | ? $self->_storage->{filter_fetch_key}->($result) |
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101 | : $result; |
102 | } |
103 | |
104 | sub NEXTKEY { |
105 | ## |
106 | # Return next key (in no particular order), given previous one |
107 | ## |
eea0d863 |
108 | my $self = shift->_get_self; |
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109 | |
83371fe3 |
110 | my $prev_key = ($self->_storage->{filter_store_key}) |
111 | ? $self->_storage->{filter_store_key}->($_[0]) |
eea0d863 |
112 | : $_[0]; |
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113 | |
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114 | ## |
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115 | # Request shared lock for reading |
116 | ## |
117 | $self->lock( $self->LOCK_SH ); |
118 | |
40956c06 |
119 | my $result = $self->_engine->get_next_key( $self->_storage->transaction_id, $self->_base_offset, $prev_key ); |
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120 | |
121 | $self->unlock(); |
122 | |
83371fe3 |
123 | return ($result && $self->_storage->{filter_fetch_key}) |
124 | ? $self->_storage->{filter_fetch_key}->($result) |
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125 | : $result; |
126 | } |
127 | |
128 | ## |
129 | # Public method aliases |
130 | ## |
f9c33187 |
131 | sub first_key { (shift)->FIRSTKEY(@_) } |
132 | sub next_key { (shift)->NEXTKEY(@_) } |
133 | |
134 | sub _copy_node { |
898fd1fd |
135 | my $self = shift; |
f9c33187 |
136 | my ($db_temp) = @_; |
137 | |
138 | my $key = $self->first_key(); |
139 | while ($key) { |
140 | my $value = $self->get($key); |
141 | $self->_copy_value( \$db_temp->{$key}, $value ); |
142 | $key = $self->next_key($key); |
143 | } |
144 | |
145 | return 1; |
146 | } |
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147 | |
148 | 1; |
149 | __END__ |