Commit | Line | Data |
6fe26b29 |
1 | package DBM::Deep::Hash; |
2 | |
460b1067 |
3 | use 5.6.0; |
4 | |
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5 | use strict; |
460b1067 |
6 | use warnings; |
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7 | |
129ea236 |
8 | use constant DEBUG => 0; |
9 | |
c3aafc14 |
10 | our $VERSION = q(0.99_03); |
86867f3a |
11 | |
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12 | use base 'DBM::Deep'; |
13 | |
596e9574 |
14 | sub _get_self { |
a4e2db58 |
15 | eval { local $SIG{'__DIE__'}; tied( %{$_[0]} ) } || $_[0] |
596e9574 |
16 | } |
17 | |
12b96196 |
18 | #XXX Need to add a check here for @_ % 2 |
f9c33187 |
19 | sub _repr { shift;return { @_ } } |
20 | |
21 | sub _import { |
22 | my $self = shift; |
23 | my ($struct) = @_; |
24 | |
25 | eval { |
26 | local $SIG{'__DIE__'}; |
27 | foreach my $key (keys %$struct) { |
28 | $self->put($key, $struct->{$key}); |
29 | } |
30 | }; if ($@) { |
31 | $self->_throw_error("Cannot import: type mismatch"); |
32 | } |
33 | |
34 | return 1; |
35 | } |
36 | |
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37 | sub TIEHASH { |
38 | ## |
39 | # Tied hash constructor method, called by Perl's tie() function. |
40 | ## |
41 | my $class = shift; |
0ca7ea98 |
42 | my $args = $class->_get_args( @_ ); |
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43 | |
44 | $args->{type} = $class->TYPE_HASH; |
45 | |
46 | return $class->_init($args); |
47 | } |
48 | |
cb79ec85 |
49 | sub FETCH { |
129ea236 |
50 | print "FETCH( @_ )\n" if DEBUG; |
cb79ec85 |
51 | my $self = shift->_get_self; |
83371fe3 |
52 | my $key = ($self->_storage->{filter_store_key}) |
53 | ? $self->_storage->{filter_store_key}->($_[0]) |
cb79ec85 |
54 | : $_[0]; |
55 | |
359a01ac |
56 | return $self->SUPER::FETCH( $key, $_[0] ); |
cb79ec85 |
57 | } |
58 | |
81d3d316 |
59 | sub STORE { |
129ea236 |
60 | print "STORE( @_ )\n" if DEBUG; |
81d3d316 |
61 | my $self = shift->_get_self; |
83371fe3 |
62 | my $key = ($self->_storage->{filter_store_key}) |
63 | ? $self->_storage->{filter_store_key}->($_[0]) |
81d3d316 |
64 | : $_[0]; |
65 | my $value = $_[1]; |
66 | |
359a01ac |
67 | return $self->SUPER::STORE( $key, $value, $_[0] ); |
81d3d316 |
68 | } |
69 | |
baa27ab6 |
70 | sub EXISTS { |
129ea236 |
71 | print "EXISTS( @_ )\n" if DEBUG; |
baa27ab6 |
72 | my $self = shift->_get_self; |
83371fe3 |
73 | my $key = ($self->_storage->{filter_store_key}) |
74 | ? $self->_storage->{filter_store_key}->($_[0]) |
baa27ab6 |
75 | : $_[0]; |
76 | |
77 | return $self->SUPER::EXISTS( $key ); |
78 | } |
79 | |
feaf1e6f |
80 | sub DELETE { |
81 | my $self = shift->_get_self; |
83371fe3 |
82 | my $key = ($self->_storage->{filter_store_key}) |
83 | ? $self->_storage->{filter_store_key}->($_[0]) |
feaf1e6f |
84 | : $_[0]; |
85 | |
359a01ac |
86 | return $self->SUPER::DELETE( $key, $_[0] ); |
feaf1e6f |
87 | } |
88 | |
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89 | sub FIRSTKEY { |
129ea236 |
90 | print "FIRSTKEY\n" if DEBUG; |
6fe26b29 |
91 | ## |
92 | # Locate and return first key (in no particular order) |
93 | ## |
eea0d863 |
94 | my $self = shift->_get_self; |
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95 | |
96 | ## |
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97 | # Request shared lock for reading |
98 | ## |
99 | $self->lock( $self->LOCK_SH ); |
100 | |
40956c06 |
101 | my $result = $self->_engine->get_next_key($self->_storage->transaction_id, $self->_base_offset); |
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102 | |
103 | $self->unlock(); |
104 | |
83371fe3 |
105 | return ($result && $self->_storage->{filter_fetch_key}) |
106 | ? $self->_storage->{filter_fetch_key}->($result) |
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107 | : $result; |
108 | } |
109 | |
110 | sub NEXTKEY { |
129ea236 |
111 | print "NEXTKEY( @_ )\n" if DEBUG; |
6fe26b29 |
112 | ## |
113 | # Return next key (in no particular order), given previous one |
114 | ## |
eea0d863 |
115 | my $self = shift->_get_self; |
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116 | |
83371fe3 |
117 | my $prev_key = ($self->_storage->{filter_store_key}) |
118 | ? $self->_storage->{filter_store_key}->($_[0]) |
eea0d863 |
119 | : $_[0]; |
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120 | |
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121 | ## |
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122 | # Request shared lock for reading |
123 | ## |
124 | $self->lock( $self->LOCK_SH ); |
125 | |
40956c06 |
126 | my $result = $self->_engine->get_next_key( $self->_storage->transaction_id, $self->_base_offset, $prev_key ); |
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127 | |
128 | $self->unlock(); |
129 | |
83371fe3 |
130 | return ($result && $self->_storage->{filter_fetch_key}) |
131 | ? $self->_storage->{filter_fetch_key}->($result) |
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132 | : $result; |
133 | } |
134 | |
135 | ## |
136 | # Public method aliases |
137 | ## |
f9c33187 |
138 | sub first_key { (shift)->FIRSTKEY(@_) } |
139 | sub next_key { (shift)->NEXTKEY(@_) } |
140 | |
141 | sub _copy_node { |
898fd1fd |
142 | my $self = shift; |
f9c33187 |
143 | my ($db_temp) = @_; |
144 | |
145 | my $key = $self->first_key(); |
146 | while ($key) { |
147 | my $value = $self->get($key); |
148 | $self->_copy_value( \$db_temp->{$key}, $value ); |
149 | $key = $self->next_key($key); |
150 | } |
151 | |
152 | return 1; |
153 | } |
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154 | |
155 | 1; |
156 | __END__ |