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=head1 NAME |
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Redis::SQLite - Redis-Compatible module which writes to SQLite. |
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=cut |
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=head1 SYNOPSIS |
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=for example begin |
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#!/usr/bin/perl -w |
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use Redis::SQLite; |
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use strict; |
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my $db = Redis::SQLite->new(); |
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$db->set( "foo", "bar" ); |
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print $db->get( "foo" ) . "\n"; |
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=for example end |
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=head1 DESCRIPTION |
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This package is an implementation of the L Perl-client API, which |
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stores all data in an SQLite database rather than in RAM. |
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It is B a drop-in replacement, because it doesn't implement all the |
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features you'd expect from the real Redis module. Just enough to be useful. |
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=cut |
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=head1 COMPATIBILITY |
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This module is designed to be source compatible with the L module, |
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providing you're only operating upon either sets or simple strings. |
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Specifically we do not support ZSET or HASH-related operations. |
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The following methods are implemented as part of the basic-functionality: |
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=over 8 |
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=item APPEND |
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=item EXISTS |
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=item GET |
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=item GETSET |
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54
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=item SET |
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=item TYPE |
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=item INCR |
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60
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=item INCRBY |
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=item DECR |
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=item DECRBY |
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66
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=item DEL |
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=item STRLEN |
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=back |
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72
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The following set-related methods are implemented: |
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=over 8 |
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=item SADD |
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=item SCARD |
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80
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=item SDIFF |
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=item SDIFFSTORE |
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=item SINTER |
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86
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=item SINTERSTORE |
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=item SISMEMBER |
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90
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=item SMEMBERS |
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92
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=item SMOVE |
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=item SPOP |
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96
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=item SRANDMEMBER |
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98
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=item SREM |
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100
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=item SUNION |
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102
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=item SUNIONSTORE |
103
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104
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=back |
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106
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The only missing set-method is C, other methods which are missing |
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will raise a Cing. |
108
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109
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=cut |
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111
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=head1 METHODS |
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113
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=cut |
114
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115
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116
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package Redis::SQLite; |
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118
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119
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120
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14
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14
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581568
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use strict; |
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47
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14
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444
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121
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57
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use warnings; |
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433
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122
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25309
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use DBI; |
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229465
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31817
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123
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124
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125
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our $VERSION = '0.1'; |
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127
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128
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=head2 new |
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130
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Constructor. The only (optional) argument is C which will |
131
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change the default SQLite database-file location, if unspecified |
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C<~/.predis.db> will be used. |
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134
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=cut |
135
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136
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sub new |
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{ |
138
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13
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13
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1
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17790
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my ( $proto, %supplied ) = (@_); |
139
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13
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33
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145
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my $class = ref($proto) || $proto; |
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141
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13
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29
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my $self = {}; |
142
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13
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33
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bless( $self, $class ); |
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144
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33
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74
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my $file = $supplied{ 'path' } || $ENV{ 'HOME' } . "/.predis.db"; |
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38
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my $create = 1; |
146
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13
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50
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415
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$create = 0 if ( -e $file ); |
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148
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13
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211
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$self->{ 'db' } = |
149
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DBI->connect( "dbi:SQLite:dbname=$file", "", "", { AutoCommit => 1 } ); |
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151
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# |
152
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# Populate the database tables, if it was missing. |
153
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# |
154
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0
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0
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if ($create) |
155
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{ |
156
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0
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$self->{ 'db' }->do( |
157
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"CREATE TABLE string (id INTEGER PRIMARY KEY, key UNIQUE, val );"); |
158
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0
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$self->{ 'db' } |
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->do("CREATE TABLE sets (id INTEGER PRIMARY KEY, key, val );"); |
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} |
161
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162
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# |
163
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# This is potentially risky, but improves the throughput by several |
164
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# orders of magnitude. |
165
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# |
166
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0
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0
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if ( !$ENV{ 'SAFE' } ) |
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{ |
168
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0
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$self->{ 'db' }->do("PRAGMA synchronous = OFF"); |
169
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0
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$self->{ 'db' }->do("PRAGMA journal_mode = MEMORY"); |
170
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} |
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172
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0
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return $self; |
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} |
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175
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176
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=head2 append |
177
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178
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Append the given string to the contents of the existing key, creating it |
179
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if didn't previously exist. |
180
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181
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=cut |
182
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183
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sub append |
184
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{ |
185
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0
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0
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1
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my ( $self, $key, $data ) = (@_); |
186
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187
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0
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my $r = $self->get($key); |
188
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0
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$r .= $data; |
189
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0
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$self->set( $key, $r ); |
190
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} |
191
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192
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193
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=head2 exists |
194
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195
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Does the given key exist? |
196
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197
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=cut |
198
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199
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sub exists |
200
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{ |
201
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0
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0
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1
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my ( $self, $key ) = (@_); |
202
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203
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0
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my $sql = $self->{ 'db' }->prepare("SELECT key FROM string WHERE key=?"); |
204
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0
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$sql->execute($key); |
205
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0
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0
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my $x = $sql->fetchrow_array() || undef; |
206
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0
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$sql->finish(); |
207
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208
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0
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0
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if ($x) |
209
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{ |
210
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0
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return 1; |
211
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} |
212
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213
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0
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$sql = $self->{ 'db' }->prepare("SELECT key FROM sets WHERE key=?"); |
214
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0
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$sql->execute($key); |
215
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0
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0
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$x = $sql->fetchrow_array() || undef; |
216
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0
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$sql->finish(); |
217
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218
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0
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0
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if ($x) |
219
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{ |
220
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0
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return 1; |
221
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} |
222
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223
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0
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return 0; |
224
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} |
225
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226
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227
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=head2 get |
228
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229
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Get the value of a string-key. Returns C if the key didn't exist, |
230
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or contain data. |
231
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232
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=cut |
233
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234
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sub get |
235
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{ |
236
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0
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0
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1
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my ( $self, $key ) = (@_); |
237
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238
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0
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0
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if ( !$self->{ 'get' } ) |
239
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{ |
240
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$self->{ 'get' } = |
241
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0
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$self->{ 'db' }->prepare("SELECT val FROM string WHERE key=?"); |
242
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} |
243
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0
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$self->{ 'get' }->execute($key); |
244
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0
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my $x = $self->{ 'get' }->fetchrow_array(); |
245
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0
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$self->{ 'get' }->finish(); |
246
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0
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return ($x); |
247
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|
} |
248
|
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|
249
|
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|
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|
250
|
|
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|
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251
|
|
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|
=head2 getset |
252
|
|
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|
253
|
|
|
|
|
|
|
Update the value of a key, and return the previous value if any. |
254
|
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|
255
|
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|
|
|
=cut |
256
|
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|
257
|
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|
sub getset |
258
|
|
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|
{ |
259
|
0
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0
|
1
|
|
my ( $self, $key, $val ) = (@_); |
260
|
|
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|
261
|
0
|
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|
|
|
my $old = $self->get($key); |
262
|
0
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|
|
|
$self->set( $key, $val ); |
263
|
|
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|
264
|
0
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|
return ($old); |
265
|
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|
} |
266
|
|
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267
|
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268
|
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|
=head2 strlen |
269
|
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|
|
270
|
|
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|
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|
|
Return the length of the given value of the given key. |
271
|
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272
|
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|
=cut |
273
|
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274
|
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|
sub strlen |
275
|
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{ |
276
|
0
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0
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1
|
|
my ( $self, $key ) = (@_); |
277
|
|
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278
|
0
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|
my $data = $self->get($key); |
279
|
0
|
0
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|
|
|
|
if ( defined($data) ) |
280
|
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{ |
281
|
0
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|
|
return ( length($data) ); |
282
|
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} |
283
|
0
|
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|
return 0; |
284
|
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|
} |
285
|
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286
|
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287
|
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|
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|
=head2 set |
288
|
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289
|
|
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|
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|
|
Set the value of a string-key. |
290
|
|
|
|
|
|
|
|
291
|
|
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|
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|
|
=cut |
292
|
|
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|
|
|
|
|
293
|
|
|
|
|
|
|
sub set |
294
|
|
|
|
|
|
|
{ |
295
|
0
|
|
|
0
|
1
|
|
my ( $self, $key, $val ) = (@_); |
296
|
|
|
|
|
|
|
|
297
|
0
|
0
|
|
|
|
|
if ( !$self->{ 'ins' } ) |
298
|
|
|
|
|
|
|
{ |
299
|
|
|
|
|
|
|
$self->{ 'ins' } = |
300
|
0
|
|
|
|
|
|
$self->{ 'db' } |
301
|
|
|
|
|
|
|
->prepare("INSERT OR REPLACE INTO string (key,val) VALUES( ?,? )"); |
302
|
|
|
|
|
|
|
} |
303
|
0
|
|
|
|
|
|
$self->{ 'ins' }->execute( $key, $val ); |
304
|
0
|
|
|
|
|
|
$self->{ 'ins' }->finish(); |
305
|
|
|
|
|
|
|
|
306
|
|
|
|
|
|
|
} |
307
|
|
|
|
|
|
|
|
308
|
|
|
|
|
|
|
|
309
|
|
|
|
|
|
|
=head2 type |
310
|
|
|
|
|
|
|
|
311
|
|
|
|
|
|
|
Return the type of the named key. |
312
|
|
|
|
|
|
|
|
313
|
|
|
|
|
|
|
=cut |
314
|
|
|
|
|
|
|
|
315
|
|
|
|
|
|
|
sub type |
316
|
|
|
|
|
|
|
{ |
317
|
0
|
|
|
0
|
1
|
|
my ( $self, $key ) = (@_); |
318
|
|
|
|
|
|
|
|
319
|
|
|
|
|
|
|
|
320
|
0
|
|
|
|
|
|
my $sql = $self->{ 'db' }->prepare("SELECT key FROM string WHERE key=?"); |
321
|
0
|
|
|
|
|
|
$sql->execute($key); |
322
|
0
|
|
0
|
|
|
|
my $x = $sql->fetchrow_array() || undef; |
323
|
0
|
|
|
|
|
|
$sql->finish(); |
324
|
|
|
|
|
|
|
|
325
|
0
|
0
|
|
|
|
|
return 'string' if ($x); |
326
|
|
|
|
|
|
|
|
327
|
0
|
|
|
|
|
|
$sql = $self->{ 'db' }->prepare("SELECT key FROM sets WHERE key=?"); |
328
|
0
|
|
|
|
|
|
$sql->execute($key); |
329
|
0
|
|
0
|
|
|
|
$x = $sql->fetchrow_array() || undef; |
330
|
0
|
|
|
|
|
|
$sql->finish(); |
331
|
|
|
|
|
|
|
|
332
|
0
|
0
|
|
|
|
|
return 'set' if ($x); |
333
|
|
|
|
|
|
|
|
334
|
0
|
|
|
|
|
|
return undef; |
335
|
|
|
|
|
|
|
} |
336
|
|
|
|
|
|
|
|
337
|
|
|
|
|
|
|
|
338
|
|
|
|
|
|
|
=head2 incr |
339
|
|
|
|
|
|
|
|
340
|
|
|
|
|
|
|
Increment and return the value of an (integer) string-key. |
341
|
|
|
|
|
|
|
|
342
|
|
|
|
|
|
|
=cut |
343
|
|
|
|
|
|
|
|
344
|
|
|
|
|
|
|
sub incr |
345
|
|
|
|
|
|
|
{ |
346
|
0
|
|
|
0
|
1
|
|
my ( $self, $key ) = (@_); |
347
|
|
|
|
|
|
|
|
348
|
0
|
|
|
|
|
|
return ( $self->incrby( $key, 1 ) ); |
349
|
|
|
|
|
|
|
} |
350
|
|
|
|
|
|
|
|
351
|
|
|
|
|
|
|
|
352
|
|
|
|
|
|
|
|
353
|
|
|
|
|
|
|
=head2 incrby |
354
|
|
|
|
|
|
|
|
355
|
|
|
|
|
|
|
Increment and return the value of an (integer) string-key. |
356
|
|
|
|
|
|
|
|
357
|
|
|
|
|
|
|
=cut |
358
|
|
|
|
|
|
|
|
359
|
|
|
|
|
|
|
sub incrby |
360
|
|
|
|
|
|
|
{ |
361
|
0
|
|
|
0
|
1
|
|
my ( $self, $key, $amt ) = (@_); |
362
|
|
|
|
|
|
|
|
363
|
0
|
0
|
|
|
|
|
$amt = 1 if ( !defined($amt) ); |
364
|
|
|
|
|
|
|
|
365
|
0
|
|
0
|
|
|
|
my $cur = $self->get($key) || 0; |
366
|
0
|
|
|
|
|
|
$cur += $amt; |
367
|
0
|
|
|
|
|
|
$self->set( $key, $cur ); |
368
|
|
|
|
|
|
|
|
369
|
0
|
|
|
|
|
|
return ($cur); |
370
|
|
|
|
|
|
|
} |
371
|
|
|
|
|
|
|
|
372
|
|
|
|
|
|
|
|
373
|
|
|
|
|
|
|
=head2 decr |
374
|
|
|
|
|
|
|
|
375
|
|
|
|
|
|
|
Decrement and return the value of an (integer) string-key. |
376
|
|
|
|
|
|
|
|
377
|
|
|
|
|
|
|
=cut |
378
|
|
|
|
|
|
|
|
379
|
|
|
|
|
|
|
sub decr |
380
|
|
|
|
|
|
|
{ |
381
|
0
|
|
|
0
|
1
|
|
my ( $self, $key ) = (@_); |
382
|
|
|
|
|
|
|
|
383
|
0
|
|
|
|
|
|
return ( $self->decrby( $key, 1 ) ); |
384
|
|
|
|
|
|
|
} |
385
|
|
|
|
|
|
|
|
386
|
|
|
|
|
|
|
|
387
|
|
|
|
|
|
|
|
388
|
|
|
|
|
|
|
=head2 decrby |
389
|
|
|
|
|
|
|
|
390
|
|
|
|
|
|
|
Decrement and return the value of an (integer) string-key. |
391
|
|
|
|
|
|
|
|
392
|
|
|
|
|
|
|
=cut |
393
|
|
|
|
|
|
|
|
394
|
|
|
|
|
|
|
sub decrby |
395
|
|
|
|
|
|
|
{ |
396
|
0
|
|
|
0
|
1
|
|
my ( $self, $key, $amt ) = (@_); |
397
|
|
|
|
|
|
|
|
398
|
0
|
0
|
|
|
|
|
$amt = 1 if ( !defined($amt) ); |
399
|
|
|
|
|
|
|
|
400
|
0
|
|
0
|
|
|
|
my $cur = $self->get($key) || 0; |
401
|
0
|
|
|
|
|
|
$cur -= $amt; |
402
|
0
|
|
|
|
|
|
$self->set( $key, $cur ); |
403
|
|
|
|
|
|
|
|
404
|
0
|
|
|
|
|
|
return ($cur); |
405
|
|
|
|
|
|
|
} |
406
|
|
|
|
|
|
|
|
407
|
|
|
|
|
|
|
|
408
|
|
|
|
|
|
|
=head2 del |
409
|
|
|
|
|
|
|
|
410
|
|
|
|
|
|
|
Delete a given key, regardless of whether it holds a string or a set. |
411
|
|
|
|
|
|
|
|
412
|
|
|
|
|
|
|
=cut |
413
|
|
|
|
|
|
|
|
414
|
|
|
|
|
|
|
sub del |
415
|
|
|
|
|
|
|
{ |
416
|
0
|
|
|
0
|
1
|
|
my ( $self, $key ) = (@_); |
417
|
|
|
|
|
|
|
|
418
|
|
|
|
|
|
|
# strings |
419
|
0
|
|
|
|
|
|
my $str = $self->{ 'db' }->prepare("DELETE FROM string WHERE key=?"); |
420
|
0
|
|
|
|
|
|
$str->execute($key); |
421
|
0
|
|
|
|
|
|
$str->finish(); |
422
|
|
|
|
|
|
|
|
423
|
|
|
|
|
|
|
# Deleted a string-keyu |
424
|
0
|
0
|
|
|
|
|
return 1 if ( $str->rows > 0 ); |
425
|
|
|
|
|
|
|
|
426
|
|
|
|
|
|
|
# sets |
427
|
0
|
|
|
|
|
|
my $set = $self->{ 'db' }->prepare("DELETE FROM sets WHERE key=?"); |
428
|
0
|
|
|
|
|
|
$set->execute($key); |
429
|
0
|
|
|
|
|
|
$set->finish(); |
430
|
|
|
|
|
|
|
|
431
|
|
|
|
|
|
|
# Deleted a set-key. |
432
|
0
|
0
|
|
|
|
|
return 1 if ( $set->rows > 0 ); |
433
|
|
|
|
|
|
|
|
434
|
|
|
|
|
|
|
# Deleted nothing. |
435
|
0
|
|
|
|
|
|
return 0; |
436
|
|
|
|
|
|
|
} |
437
|
|
|
|
|
|
|
|
438
|
|
|
|
|
|
|
|
439
|
|
|
|
|
|
|
=head2 keys |
440
|
|
|
|
|
|
|
|
441
|
|
|
|
|
|
|
Return the names of each known key. |
442
|
|
|
|
|
|
|
|
443
|
|
|
|
|
|
|
These can be optionally filtered by a (perl) regular expression, for example: |
444
|
|
|
|
|
|
|
|
445
|
|
|
|
|
|
|
=for example begin |
446
|
|
|
|
|
|
|
|
447
|
|
|
|
|
|
|
$redis->set( "foo", 1 ); |
448
|
|
|
|
|
|
|
$redis->set( "moo", 1 ); |
449
|
|
|
|
|
|
|
|
450
|
|
|
|
|
|
|
$redis->keys( "^f" ); # -> [ "foo" ] |
451
|
|
|
|
|
|
|
$redis->keys( "oo\$" ); # -> [ "foo", "moo" ] |
452
|
|
|
|
|
|
|
|
453
|
|
|
|
|
|
|
=for example end |
454
|
|
|
|
|
|
|
|
455
|
|
|
|
|
|
|
=cut |
456
|
|
|
|
|
|
|
|
457
|
|
|
|
|
|
|
sub keys |
458
|
|
|
|
|
|
|
{ |
459
|
0
|
|
|
0
|
1
|
|
my ( $self, $pattern ) = (@_); |
460
|
|
|
|
|
|
|
|
461
|
|
|
|
|
|
|
# Get all keys into this hash |
462
|
0
|
|
|
|
|
|
my %known; |
463
|
|
|
|
|
|
|
|
464
|
|
|
|
|
|
|
# We run the same query against two tables. |
465
|
0
|
|
|
|
|
|
foreach my $table (qw! string sets !) |
466
|
|
|
|
|
|
|
{ |
467
|
|
|
|
|
|
|
# Get the names of the key. |
468
|
0
|
|
|
|
|
|
my $str = $self->{ 'db' }->prepare("SELECT key FROM $table"); |
469
|
0
|
|
|
|
|
|
$str->execute(); |
470
|
0
|
|
|
|
|
|
while ( my ($name) = $str->fetchrow_array ) |
471
|
|
|
|
|
|
|
{ |
472
|
0
|
|
|
|
|
|
$known{ $name } += 1; |
473
|
|
|
|
|
|
|
} |
474
|
0
|
|
|
|
|
|
$str->finish(); |
475
|
|
|
|
|
|
|
} |
476
|
|
|
|
|
|
|
|
477
|
|
|
|
|
|
|
# The keys we've found |
478
|
0
|
|
|
|
|
|
my @keys = keys %known; |
479
|
|
|
|
|
|
|
|
480
|
0
|
0
|
|
|
|
|
if ($pattern) |
481
|
|
|
|
|
|
|
{ |
482
|
0
|
|
|
|
|
|
my @ret; |
483
|
0
|
|
|
|
|
|
foreach my $ent (@keys) |
484
|
|
|
|
|
|
|
{ |
485
|
0
|
0
|
|
|
|
|
push( @ret, $ent ) if ( $ent =~ /$pattern/ ); |
486
|
|
|
|
|
|
|
} |
487
|
0
|
|
|
|
|
|
return (@ret); |
488
|
|
|
|
|
|
|
} |
489
|
|
|
|
|
|
|
else |
490
|
|
|
|
|
|
|
{ |
491
|
0
|
|
|
|
|
|
return (@keys); |
492
|
|
|
|
|
|
|
} |
493
|
|
|
|
|
|
|
} |
494
|
|
|
|
|
|
|
|
495
|
|
|
|
|
|
|
|
496
|
|
|
|
|
|
|
=head2 smembers |
497
|
|
|
|
|
|
|
|
498
|
|
|
|
|
|
|
Return the members of the given set. |
499
|
|
|
|
|
|
|
|
500
|
|
|
|
|
|
|
=cut |
501
|
|
|
|
|
|
|
|
502
|
|
|
|
|
|
|
sub smembers |
503
|
|
|
|
|
|
|
{ |
504
|
0
|
|
|
0
|
1
|
|
my ( $self, $key ) = (@_); |
505
|
|
|
|
|
|
|
|
506
|
0
|
0
|
|
|
|
|
if ( !$self->{ 'smembers' } ) |
507
|
|
|
|
|
|
|
{ |
508
|
|
|
|
|
|
|
$self->{ 'smembers' } = |
509
|
0
|
|
|
|
|
|
$self->{ 'db' }->prepare("SELECT val FROM sets WHERE key=?"); |
510
|
|
|
|
|
|
|
} |
511
|
0
|
|
|
|
|
|
$self->{ 'smembers' }->execute($key); |
512
|
|
|
|
|
|
|
|
513
|
0
|
|
|
|
|
|
my @vals; |
514
|
0
|
|
|
|
|
|
while ( my ($name) = $self->{ 'smembers' }->fetchrow_array ) |
515
|
|
|
|
|
|
|
{ |
516
|
0
|
|
|
|
|
|
push( @vals, $name ); |
517
|
|
|
|
|
|
|
} |
518
|
0
|
|
|
|
|
|
$self->{ 'smembers' }->finish(); |
519
|
|
|
|
|
|
|
|
520
|
0
|
|
|
|
|
|
return (@vals); |
521
|
|
|
|
|
|
|
} |
522
|
|
|
|
|
|
|
|
523
|
|
|
|
|
|
|
|
524
|
|
|
|
|
|
|
=head2 smove |
525
|
|
|
|
|
|
|
|
526
|
|
|
|
|
|
|
Move a member from a given set to a new one. |
527
|
|
|
|
|
|
|
|
528
|
|
|
|
|
|
|
=cut |
529
|
|
|
|
|
|
|
|
530
|
|
|
|
|
|
|
sub smove |
531
|
|
|
|
|
|
|
{ |
532
|
0
|
|
|
0
|
1
|
|
my ( $self, $src, $dst, $ent ) = (@_); |
533
|
|
|
|
|
|
|
|
534
|
|
|
|
|
|
|
# Get the value from the original set |
535
|
0
|
|
|
|
|
|
my $sql = $self->{ 'db' } |
536
|
|
|
|
|
|
|
->prepare("UPDATE sets SET key=? WHERE ( key=? AND val=?)"); |
537
|
|
|
|
|
|
|
|
538
|
0
|
|
|
|
|
|
$sql->execute( $dst, $src, $ent ); |
539
|
0
|
|
|
|
|
|
$sql->finish(); |
540
|
|
|
|
|
|
|
|
541
|
0
|
0
|
|
|
|
|
if ( $sql->rows > 0 ) |
542
|
|
|
|
|
|
|
{ |
543
|
0
|
|
|
|
|
|
return 1; |
544
|
|
|
|
|
|
|
} |
545
|
0
|
|
|
|
|
|
return 0; |
546
|
|
|
|
|
|
|
|
547
|
|
|
|
|
|
|
} |
548
|
|
|
|
|
|
|
|
549
|
|
|
|
|
|
|
|
550
|
|
|
|
|
|
|
=head2 sismember |
551
|
|
|
|
|
|
|
|
552
|
|
|
|
|
|
|
Is the given item a member of the set? |
553
|
|
|
|
|
|
|
|
554
|
|
|
|
|
|
|
=cut |
555
|
|
|
|
|
|
|
|
556
|
|
|
|
|
|
|
sub sismember |
557
|
|
|
|
|
|
|
{ |
558
|
0
|
|
|
0
|
1
|
|
my ( $self, $set, $key ) = (@_); |
559
|
|
|
|
|
|
|
|
560
|
|
|
|
|
|
|
my $sql = |
561
|
0
|
|
|
|
|
|
$self->{ 'db' }->prepare("SELECT val FROM sets WHERE key=? AND val=?"); |
562
|
0
|
|
|
|
|
|
$sql->execute( $set, $key ); |
563
|
|
|
|
|
|
|
|
564
|
0
|
|
0
|
|
|
|
my $x = $sql->fetchrow_array() || undef; |
565
|
0
|
|
|
|
|
|
$sql->finish(); |
566
|
|
|
|
|
|
|
|
567
|
0
|
0
|
0
|
|
|
|
if ( defined($x) && ( $x eq $key ) ) |
568
|
|
|
|
|
|
|
{ |
569
|
0
|
|
|
|
|
|
return 1; |
570
|
|
|
|
|
|
|
} |
571
|
0
|
|
|
|
|
|
return 0; |
572
|
|
|
|
|
|
|
} |
573
|
|
|
|
|
|
|
|
574
|
|
|
|
|
|
|
|
575
|
|
|
|
|
|
|
=head2 sadd |
576
|
|
|
|
|
|
|
|
577
|
|
|
|
|
|
|
Add a member to a set. |
578
|
|
|
|
|
|
|
|
579
|
|
|
|
|
|
|
=cut |
580
|
|
|
|
|
|
|
|
581
|
|
|
|
|
|
|
sub sadd |
582
|
|
|
|
|
|
|
{ |
583
|
0
|
|
|
0
|
1
|
|
my ( $self, $key, $val ) = (@_); |
584
|
|
|
|
|
|
|
|
585
|
0
|
0
|
|
|
|
|
if ( !$self->{ 'sadd' } ) |
586
|
|
|
|
|
|
|
{ |
587
|
|
|
|
|
|
|
$self->{ 'sadd' } = |
588
|
0
|
|
|
|
|
|
$self->{ 'db' }->prepare( |
589
|
|
|
|
|
|
|
"INSERT INTO sets (key,val) SELECT ?,? WHERE NOT EXISTS( SELECT key, val FROM sets WHERE key=? AND val=? );" |
590
|
|
|
|
|
|
|
); |
591
|
|
|
|
|
|
|
|
592
|
|
|
|
|
|
|
} |
593
|
0
|
|
|
|
|
|
$self->{ 'sadd' }->execute( $key, $val, $key, $val ); |
594
|
0
|
|
|
|
|
|
$self->{ 'sadd' }->finish(); |
595
|
|
|
|
|
|
|
|
596
|
0
|
0
|
|
|
|
|
if ( $self->{ 'sadd' }->rows > 0 ) |
597
|
|
|
|
|
|
|
{ |
598
|
0
|
|
|
|
|
|
return 1; |
599
|
|
|
|
|
|
|
} |
600
|
0
|
|
|
|
|
|
return 0; |
601
|
|
|
|
|
|
|
|
602
|
|
|
|
|
|
|
} |
603
|
|
|
|
|
|
|
|
604
|
|
|
|
|
|
|
|
605
|
|
|
|
|
|
|
=head2 srem |
606
|
|
|
|
|
|
|
|
607
|
|
|
|
|
|
|
Remove a member from a set. |
608
|
|
|
|
|
|
|
|
609
|
|
|
|
|
|
|
=cut |
610
|
|
|
|
|
|
|
|
611
|
|
|
|
|
|
|
sub srem |
612
|
|
|
|
|
|
|
{ |
613
|
0
|
|
|
0
|
1
|
|
my ( $self, $key, $val ) = (@_); |
614
|
|
|
|
|
|
|
|
615
|
0
|
0
|
|
|
|
|
if ( !$self->{ 'srem' } ) |
616
|
|
|
|
|
|
|
{ |
617
|
|
|
|
|
|
|
$self->{ 'srem' } = |
618
|
0
|
|
|
|
|
|
$self->{ 'db' }->prepare("DELETE FROM sets WHERE (key=? AND val=?)"); |
619
|
|
|
|
|
|
|
} |
620
|
0
|
|
|
|
|
|
$self->{ 'srem' }->execute( $key, $val ); |
621
|
0
|
|
|
|
|
|
$self->{ 'srem' }->finish(); |
622
|
|
|
|
|
|
|
|
623
|
0
|
0
|
|
|
|
|
if ( $self->{ 'srem' }->rows > 0 ) |
624
|
|
|
|
|
|
|
{ |
625
|
0
|
|
|
|
|
|
return 1; |
626
|
|
|
|
|
|
|
} |
627
|
0
|
|
|
|
|
|
return 0; |
628
|
|
|
|
|
|
|
} |
629
|
|
|
|
|
|
|
|
630
|
|
|
|
|
|
|
|
631
|
|
|
|
|
|
|
=head2 spop |
632
|
|
|
|
|
|
|
|
633
|
|
|
|
|
|
|
Remove a given number of elements from the named set, and return them. |
634
|
|
|
|
|
|
|
|
635
|
|
|
|
|
|
|
=cut |
636
|
|
|
|
|
|
|
|
637
|
|
|
|
|
|
|
sub spop |
638
|
|
|
|
|
|
|
{ |
639
|
0
|
|
|
0
|
1
|
|
my ( $self, $key, $count ) = (@_); |
640
|
|
|
|
|
|
|
|
641
|
0
|
0
|
|
|
|
|
$count = 1 if ( !defined($count) ); |
642
|
|
|
|
|
|
|
|
643
|
0
|
|
|
|
|
|
my @res; |
644
|
|
|
|
|
|
|
|
645
|
0
|
|
0
|
|
|
|
while ( ( $count > 0 ) && ( $count <= $self->scard($key) ) ) |
646
|
|
|
|
|
|
|
{ |
647
|
0
|
|
|
|
|
|
my $rand = $self->srandmember($key); |
648
|
0
|
|
|
|
|
|
push( @res, $rand ); |
649
|
0
|
|
|
|
|
|
$self->srem( $key, $rand ); |
650
|
|
|
|
|
|
|
|
651
|
0
|
|
|
|
|
|
$count -= 1; |
652
|
|
|
|
|
|
|
} |
653
|
|
|
|
|
|
|
|
654
|
0
|
|
|
|
|
|
return (@res); |
655
|
|
|
|
|
|
|
} |
656
|
|
|
|
|
|
|
|
657
|
|
|
|
|
|
|
|
658
|
|
|
|
|
|
|
|
659
|
|
|
|
|
|
|
=head2 srandmember |
660
|
|
|
|
|
|
|
|
661
|
|
|
|
|
|
|
Fetch the value of a random member from a set. |
662
|
|
|
|
|
|
|
|
663
|
|
|
|
|
|
|
=cut |
664
|
|
|
|
|
|
|
|
665
|
|
|
|
|
|
|
sub srandmember |
666
|
|
|
|
|
|
|
{ |
667
|
0
|
|
|
0
|
1
|
|
my ( $self, $key ) = (@_); |
668
|
|
|
|
|
|
|
|
669
|
0
|
0
|
|
|
|
|
if ( !$self->{ 'srandommember' } ) |
670
|
|
|
|
|
|
|
{ |
671
|
|
|
|
|
|
|
$self->{ 'srandommember' } = |
672
|
0
|
0
|
|
|
|
|
$self->{ 'db' }->prepare( |
673
|
|
|
|
|
|
|
"SELECT val FROM sets where key=? ORDER BY RANDOM() LIMIT 1") or |
674
|
|
|
|
|
|
|
die "Failed to prepare"; |
675
|
|
|
|
|
|
|
} |
676
|
0
|
|
|
|
|
|
$self->{ 'srandommember' }->execute($key); |
677
|
0
|
|
0
|
|
|
|
my $x = $self->{ 'srandommember' }->fetchrow_array() || ""; |
678
|
0
|
|
|
|
|
|
$self->{ 'srandommember' }->finish(); |
679
|
|
|
|
|
|
|
|
680
|
0
|
|
|
|
|
|
return ($x); |
681
|
|
|
|
|
|
|
} |
682
|
|
|
|
|
|
|
|
683
|
|
|
|
|
|
|
|
684
|
|
|
|
|
|
|
=head2 sunion |
685
|
|
|
|
|
|
|
|
686
|
|
|
|
|
|
|
Return the values which are present in each of the sets named, duplicates |
687
|
|
|
|
|
|
|
will only be returned one time. |
688
|
|
|
|
|
|
|
|
689
|
|
|
|
|
|
|
For example: |
690
|
|
|
|
|
|
|
|
691
|
|
|
|
|
|
|
=for example begin |
692
|
|
|
|
|
|
|
|
693
|
|
|
|
|
|
|
$redis->sadd( "one", 1 ); |
694
|
|
|
|
|
|
|
$redis->sadd( "one", 2 ); |
695
|
|
|
|
|
|
|
$redis->sadd( "one", 3 ); |
696
|
|
|
|
|
|
|
|
697
|
|
|
|
|
|
|
$redis->sadd( "two", 2 ); |
698
|
|
|
|
|
|
|
$redis->sadd( "two", 3 ); |
699
|
|
|
|
|
|
|
$redis->sadd( "two", 4 ); |
700
|
|
|
|
|
|
|
|
701
|
|
|
|
|
|
|
$redis->sunion( "one", "two" ); # -> [ 1,2,3,4 ] |
702
|
|
|
|
|
|
|
|
703
|
|
|
|
|
|
|
=for example end |
704
|
|
|
|
|
|
|
|
705
|
|
|
|
|
|
|
=cut |
706
|
|
|
|
|
|
|
|
707
|
|
|
|
|
|
|
sub sunion |
708
|
|
|
|
|
|
|
{ |
709
|
0
|
|
|
0
|
1
|
|
my ( $self, @keys ) = (@_); |
710
|
|
|
|
|
|
|
|
711
|
|
|
|
|
|
|
|
712
|
0
|
|
|
|
|
|
my %result; |
713
|
|
|
|
|
|
|
|
714
|
0
|
|
|
|
|
|
foreach my $key (@keys) |
715
|
|
|
|
|
|
|
{ |
716
|
0
|
|
|
|
|
|
my @vals = $self->smembers($key); |
717
|
0
|
|
|
|
|
|
foreach my $val (@vals) |
718
|
|
|
|
|
|
|
{ |
719
|
0
|
|
|
|
|
|
$result{ $val } += 1; |
720
|
|
|
|
|
|
|
} |
721
|
|
|
|
|
|
|
} |
722
|
|
|
|
|
|
|
|
723
|
0
|
|
|
|
|
|
return ( CORE::keys(%result) ); |
724
|
|
|
|
|
|
|
} |
725
|
|
|
|
|
|
|
|
726
|
|
|
|
|
|
|
|
727
|
|
|
|
|
|
|
=head2 sunionstore |
728
|
|
|
|
|
|
|
|
729
|
|
|
|
|
|
|
Store the values which are present in each of the named sets in a new set. |
730
|
|
|
|
|
|
|
|
731
|
|
|
|
|
|
|
=cut |
732
|
|
|
|
|
|
|
|
733
|
|
|
|
|
|
|
sub sunionstore |
734
|
|
|
|
|
|
|
{ |
735
|
0
|
|
|
0
|
1
|
|
my ( $self, $dest, @keys ) = (@_); |
736
|
|
|
|
|
|
|
|
737
|
|
|
|
|
|
|
# Get the union |
738
|
0
|
|
|
|
|
|
my @union = $self->sunion(@keys); |
739
|
|
|
|
|
|
|
|
740
|
|
|
|
|
|
|
# Delete the current contents of the destination. |
741
|
0
|
|
|
|
|
|
$self->del($dest); |
742
|
|
|
|
|
|
|
|
743
|
|
|
|
|
|
|
# Now store the members |
744
|
0
|
|
|
|
|
|
foreach my $ent (@union) |
745
|
|
|
|
|
|
|
{ |
746
|
0
|
|
|
|
|
|
$self->sadd( $dest, $ent ); |
747
|
|
|
|
|
|
|
} |
748
|
|
|
|
|
|
|
|
749
|
|
|
|
|
|
|
# Return the number of entries added |
750
|
0
|
|
|
|
|
|
return ( scalar @union ); |
751
|
|
|
|
|
|
|
} |
752
|
|
|
|
|
|
|
|
753
|
|
|
|
|
|
|
|
754
|
|
|
|
|
|
|
=head2 sinter |
755
|
|
|
|
|
|
|
|
756
|
|
|
|
|
|
|
Return only those members who exist in each of the named sets. |
757
|
|
|
|
|
|
|
|
758
|
|
|
|
|
|
|
=for example begin |
759
|
|
|
|
|
|
|
|
760
|
|
|
|
|
|
|
$redis->sadd( "one", 1 ); |
761
|
|
|
|
|
|
|
$redis->sadd( "one", 2 ); |
762
|
|
|
|
|
|
|
$redis->sadd( "one", 3 ); |
763
|
|
|
|
|
|
|
|
764
|
|
|
|
|
|
|
$redis->sadd( "two", 2 ); |
765
|
|
|
|
|
|
|
$redis->sadd( "two", 3 ); |
766
|
|
|
|
|
|
|
$redis->sadd( "two", 4 ); |
767
|
|
|
|
|
|
|
|
768
|
|
|
|
|
|
|
$redis->sinter( "one", "two" ); # -> [ 2,3 ] |
769
|
|
|
|
|
|
|
|
770
|
|
|
|
|
|
|
=for example end |
771
|
|
|
|
|
|
|
|
772
|
|
|
|
|
|
|
=cut |
773
|
|
|
|
|
|
|
|
774
|
|
|
|
|
|
|
sub sinter |
775
|
|
|
|
|
|
|
{ |
776
|
0
|
|
|
0
|
1
|
|
my ( $self, @names ) = (@_); |
777
|
|
|
|
|
|
|
|
778
|
0
|
|
|
|
|
|
my %seen; |
779
|
|
|
|
|
|
|
|
780
|
0
|
|
|
|
|
|
foreach my $key (@names) |
781
|
|
|
|
|
|
|
{ |
782
|
0
|
|
|
|
|
|
my @vals = $self->smembers($key); |
783
|
0
|
|
|
|
|
|
foreach my $val (@vals) |
784
|
|
|
|
|
|
|
{ |
785
|
0
|
|
|
|
|
|
$seen{ $val } += 1; |
786
|
|
|
|
|
|
|
} |
787
|
|
|
|
|
|
|
} |
788
|
|
|
|
|
|
|
|
789
|
0
|
|
|
|
|
|
my @result; |
790
|
|
|
|
|
|
|
|
791
|
0
|
|
|
|
|
|
foreach my $key ( CORE::keys(%seen) ) |
792
|
|
|
|
|
|
|
{ |
793
|
0
|
0
|
|
|
|
|
if ( $seen{ $key } == scalar @names ) |
794
|
|
|
|
|
|
|
{ |
795
|
0
|
|
|
|
|
|
push( @result, $key ); |
796
|
|
|
|
|
|
|
} |
797
|
|
|
|
|
|
|
} |
798
|
0
|
|
|
|
|
|
return (@result); |
799
|
|
|
|
|
|
|
} |
800
|
|
|
|
|
|
|
|
801
|
|
|
|
|
|
|
|
802
|
|
|
|
|
|
|
|
803
|
|
|
|
|
|
|
=head2 sinterstore |
804
|
|
|
|
|
|
|
|
805
|
|
|
|
|
|
|
Store those members who exist in all the named sets in a new set. |
806
|
|
|
|
|
|
|
|
807
|
|
|
|
|
|
|
=cut |
808
|
|
|
|
|
|
|
|
809
|
|
|
|
|
|
|
sub sinterstore |
810
|
|
|
|
|
|
|
{ |
811
|
0
|
|
|
0
|
1
|
|
my ( $self, $dest, @names ) = (@_); |
812
|
|
|
|
|
|
|
|
813
|
|
|
|
|
|
|
# Get the values that intersect |
814
|
0
|
|
|
|
|
|
my @update = $self->sinter(@names); |
815
|
|
|
|
|
|
|
|
816
|
|
|
|
|
|
|
# Delete the current contents of the destination. |
817
|
0
|
|
|
|
|
|
$self->del($dest); |
818
|
|
|
|
|
|
|
|
819
|
|
|
|
|
|
|
# Now store the members |
820
|
0
|
|
|
|
|
|
foreach my $ent (@update) |
821
|
|
|
|
|
|
|
{ |
822
|
0
|
|
|
|
|
|
$self->sadd( $dest, $ent ); |
823
|
|
|
|
|
|
|
} |
824
|
|
|
|
|
|
|
|
825
|
|
|
|
|
|
|
# Return the number of entries added |
826
|
0
|
|
|
|
|
|
return ( scalar @update ); |
827
|
|
|
|
|
|
|
} |
828
|
|
|
|
|
|
|
|
829
|
|
|
|
|
|
|
|
830
|
|
|
|
|
|
|
=head2 scard |
831
|
|
|
|
|
|
|
|
832
|
|
|
|
|
|
|
Count the number of entries in the given set. |
833
|
|
|
|
|
|
|
|
834
|
|
|
|
|
|
|
=cut |
835
|
|
|
|
|
|
|
|
836
|
|
|
|
|
|
|
sub scard |
837
|
|
|
|
|
|
|
{ |
838
|
0
|
|
|
0
|
1
|
|
my ( $self, $key ) = (@_); |
839
|
|
|
|
|
|
|
|
840
|
0
|
0
|
|
|
|
|
if ( !$self->{ 'scard' } ) |
841
|
|
|
|
|
|
|
{ |
842
|
|
|
|
|
|
|
$self->{ 'scard' } = |
843
|
0
|
|
|
|
|
|
$self->{ 'db' }->prepare("SELECT COUNT(id) FROM sets where key=?"); |
844
|
|
|
|
|
|
|
} |
845
|
0
|
|
|
|
|
|
$self->{ 'scard' }->execute($key); |
846
|
0
|
|
0
|
|
|
|
my $count = $self->{ 'scard' }->fetchrow_array() || 0; |
847
|
0
|
|
|
|
|
|
$self->{ 'scard' }->finish(); |
848
|
|
|
|
|
|
|
|
849
|
0
|
|
|
|
|
|
return ($count); |
850
|
|
|
|
|
|
|
} |
851
|
|
|
|
|
|
|
|
852
|
|
|
|
|
|
|
|
853
|
|
|
|
|
|
|
|
854
|
|
|
|
|
|
|
our $AUTOLOAD; |
855
|
|
|
|
|
|
|
|
856
|
|
|
|
|
|
|
sub AUTOLOAD |
857
|
|
|
|
|
|
|
{ |
858
|
0
|
|
|
0
|
|
|
my $command = $AUTOLOAD; |
859
|
0
|
|
|
|
|
|
$command =~ s/.*://; |
860
|
0
|
|
|
|
|
|
warn "NOT IMPLEMENTED:$command"; |
861
|
|
|
|
|
|
|
|
862
|
0
|
|
|
|
|
|
return 1; |
863
|
|
|
|
|
|
|
} |
864
|
|
|
|
|
|
|
|
865
|
|
|
|
|
|
|
1; |
866
|
|
|
|
|
|
|
|
867
|
|
|
|
|
|
|
|
868
|
|
|
|
|
|
|
|
869
|
|
|
|
|
|
|
=head1 AUTHOR |
870
|
|
|
|
|
|
|
|
871
|
|
|
|
|
|
|
Steve Kemp |
872
|
|
|
|
|
|
|
|
873
|
|
|
|
|
|
|
http://www.steve.org.uk/ |
874
|
|
|
|
|
|
|
|
875
|
|
|
|
|
|
|
=cut |
876
|
|
|
|
|
|
|
|
877
|
|
|
|
|
|
|
|
878
|
|
|
|
|
|
|
|
879
|
|
|
|
|
|
|
=head1 LICENSE |
880
|
|
|
|
|
|
|
|
881
|
|
|
|
|
|
|
Copyright (c) 2016 by Steve Kemp. All rights reserved. |
882
|
|
|
|
|
|
|
|
883
|
|
|
|
|
|
|
This module is free software; |
884
|
|
|
|
|
|
|
you can redistribute it and/or modify it under |
885
|
|
|
|
|
|
|
the same terms as Perl itself. |
886
|
|
|
|
|
|
|
The LICENSE file contains the full text of the license. |
887
|
|
|
|
|
|
|
|
888
|
|
|
|
|
|
|
=cut |