Commit | Line | Data |
ffed8b01 |
1 | package DBM::Deep; |
2 | |
2120a181 |
3 | use 5.006_000; |
460b1067 |
4 | |
ffed8b01 |
5 | use strict; |
460b1067 |
6 | use warnings; |
8b957036 |
7 | |
b8370759 |
8 | our $VERSION = q(1.0010); |
86867f3a |
9 | |
edd45134 |
10 | use Data::Dumper (); |
2120a181 |
11 | use Fcntl qw( :flock ); |
ffed8b01 |
12 | use Scalar::Util (); |
ffed8b01 |
13 | |
2120a181 |
14 | use DBM::Deep::Engine; |
460b1067 |
15 | use DBM::Deep::File; |
95967a5e |
16 | |
c57b19c6 |
17 | use overload |
18 | '""' => sub { overload::StrVal( $_[0] ) }, |
19 | fallback => 1; |
20 | |
6e6789b0 |
21 | use constant DEBUG => 0; |
22 | |
ffed8b01 |
23 | ## |
24 | # Setup constants for users to pass to new() |
25 | ## |
2120a181 |
26 | sub TYPE_HASH () { DBM::Deep::Engine->SIG_HASH } |
27 | sub TYPE_ARRAY () { DBM::Deep::Engine->SIG_ARRAY } |
ffed8b01 |
28 | |
2120a181 |
29 | # This is used in all the children of this class in their TIE<type> methods. |
0ca7ea98 |
30 | sub _get_args { |
31 | my $proto = shift; |
32 | |
33 | my $args; |
34 | if (scalar(@_) > 1) { |
35 | if ( @_ % 2 ) { |
36 | $proto->_throw_error( "Odd number of parameters to " . (caller(1))[2] ); |
37 | } |
38 | $args = {@_}; |
39 | } |
d0b74c17 |
40 | elsif ( ref $_[0] ) { |
4d35d856 |
41 | unless ( eval { local $SIG{'__DIE__'}; %{$_[0]} || 1 } ) { |
0ca7ea98 |
42 | $proto->_throw_error( "Not a hashref in args to " . (caller(1))[2] ); |
43 | } |
44 | $args = $_[0]; |
45 | } |
d0b74c17 |
46 | else { |
0ca7ea98 |
47 | $args = { file => shift }; |
48 | } |
49 | |
50 | return $args; |
51 | } |
52 | |
ffed8b01 |
53 | sub new { |
d0b74c17 |
54 | ## |
55 | # Class constructor method for Perl OO interface. |
56 | # Calls tie() and returns blessed reference to tied hash or array, |
57 | # providing a hybrid OO/tie interface. |
58 | ## |
59 | my $class = shift; |
60 | my $args = $class->_get_args( @_ ); |
61 | |
62 | ## |
63 | # Check if we want a tied hash or array. |
64 | ## |
65 | my $self; |
66 | if (defined($args->{type}) && $args->{type} eq TYPE_ARRAY) { |
6fe26b29 |
67 | $class = 'DBM::Deep::Array'; |
68 | require DBM::Deep::Array; |
d0b74c17 |
69 | tie @$self, $class, %$args; |
70 | } |
71 | else { |
6fe26b29 |
72 | $class = 'DBM::Deep::Hash'; |
73 | require DBM::Deep::Hash; |
d0b74c17 |
74 | tie %$self, $class, %$args; |
75 | } |
ffed8b01 |
76 | |
d0b74c17 |
77 | return bless $self, $class; |
ffed8b01 |
78 | } |
79 | |
96041a25 |
80 | # This initializer is called from the various TIE* methods. new() calls tie(), |
81 | # which allows for a single point of entry. |
0795f290 |
82 | sub _init { |
0795f290 |
83 | my $class = shift; |
994ccd8e |
84 | my ($args) = @_; |
0795f290 |
85 | |
83371fe3 |
86 | $args->{storage} = DBM::Deep::File->new( $args ) |
87 | unless exists $args->{storage}; |
460b1067 |
88 | |
89 | # locking implicitly enables autoflush |
90 | if ($args->{locking}) { $args->{autoflush} = 1; } |
91 | |
0795f290 |
92 | # These are the defaults to be optionally overridden below |
93 | my $self = bless { |
95967a5e |
94 | type => TYPE_HASH, |
e06824f8 |
95 | base_offset => undef, |
2120a181 |
96 | staleness => undef, |
359a01ac |
97 | |
83371fe3 |
98 | storage => undef, |
2120a181 |
99 | engine => undef, |
0795f290 |
100 | }, $class; |
2120a181 |
101 | |
102 | $args->{engine} = DBM::Deep::Engine->new( { %{$args}, obj => $self } ) |
103 | unless exists $args->{engine}; |
8db25060 |
104 | |
fde3db1a |
105 | # Grab the parameters we want to use |
0795f290 |
106 | foreach my $param ( keys %$self ) { |
107 | next unless exists $args->{$param}; |
3e9498a1 |
108 | $self->{$param} = $args->{$param}; |
ffed8b01 |
109 | } |
d0b74c17 |
110 | |
2120a181 |
111 | eval { |
112 | local $SIG{'__DIE__'}; |
0795f290 |
113 | |
2120a181 |
114 | $self->lock; |
115 | $self->_engine->setup_fh( $self ); |
116 | $self->_storage->set_inode; |
117 | $self->unlock; |
118 | }; if ( $@ ) { |
119 | my $e = $@; |
120 | eval { local $SIG{'__DIE__'}; $self->unlock; }; |
121 | die $e; |
122 | } |
359a01ac |
123 | |
0795f290 |
124 | return $self; |
ffed8b01 |
125 | } |
126 | |
ffed8b01 |
127 | sub TIEHASH { |
6fe26b29 |
128 | shift; |
129 | require DBM::Deep::Hash; |
130 | return DBM::Deep::Hash->TIEHASH( @_ ); |
ffed8b01 |
131 | } |
132 | |
133 | sub TIEARRAY { |
6fe26b29 |
134 | shift; |
135 | require DBM::Deep::Array; |
136 | return DBM::Deep::Array->TIEARRAY( @_ ); |
ffed8b01 |
137 | } |
138 | |
ffed8b01 |
139 | sub lock { |
994ccd8e |
140 | my $self = shift->_get_self; |
83371fe3 |
141 | return $self->_storage->lock( $self, @_ ); |
ffed8b01 |
142 | } |
143 | |
144 | sub unlock { |
994ccd8e |
145 | my $self = shift->_get_self; |
83371fe3 |
146 | return $self->_storage->unlock( $self, @_ ); |
ffed8b01 |
147 | } |
148 | |
906c8e01 |
149 | sub _copy_value { |
150 | my $self = shift->_get_self; |
151 | my ($spot, $value) = @_; |
152 | |
153 | if ( !ref $value ) { |
154 | ${$spot} = $value; |
155 | } |
906c8e01 |
156 | else { |
edd45134 |
157 | # This assumes hash or array only. This is a bad assumption moving forward. |
158 | # -RobK, 2008-05-27 |
906c8e01 |
159 | my $r = Scalar::Util::reftype( $value ); |
edd45134 |
160 | my $tied; |
906c8e01 |
161 | if ( $r eq 'ARRAY' ) { |
edd45134 |
162 | $tied = tied(@$value); |
906c8e01 |
163 | } |
164 | else { |
edd45134 |
165 | $tied = tied(%$value); |
166 | } |
167 | |
168 | if ( eval { local $SIG{__DIE__}; $tied->isa( 'DBM::Deep' ) } ) { |
169 | ${$spot} = $tied->_repr; |
170 | $tied->_copy_node( ${$spot} ); |
171 | } |
172 | else { |
173 | if ( $r eq 'ARRAY' ) { |
174 | ${$spot} = [ @{$value} ]; |
175 | } |
176 | else { |
177 | ${$spot} = { %{$value} }; |
178 | } |
179 | } |
180 | |
181 | my $c = Scalar::Util::blessed( $value ); |
182 | if ( defined $c && !$c->isa( 'DBM::Deep') ) { |
183 | ${$spot} = bless ${$spot}, $c |
906c8e01 |
184 | } |
906c8e01 |
185 | } |
186 | |
187 | return 1; |
188 | } |
189 | |
2120a181 |
190 | #sub _copy_node { |
191 | # die "Must be implemented in a child class\n"; |
192 | #} |
193 | # |
194 | #sub _repr { |
195 | # die "Must be implemented in a child class\n"; |
196 | #} |
ffed8b01 |
197 | |
198 | sub export { |
d0b74c17 |
199 | ## |
200 | # Recursively export into standard Perl hashes and arrays. |
201 | ## |
994ccd8e |
202 | my $self = shift->_get_self; |
d0b74c17 |
203 | |
f9c33187 |
204 | my $temp = $self->_repr; |
d0b74c17 |
205 | |
206 | $self->lock(); |
207 | $self->_copy_node( $temp ); |
208 | $self->unlock(); |
209 | |
2120a181 |
210 | my $classname = $self->_engine->get_classname( $self ); |
211 | if ( defined $classname ) { |
212 | bless $temp, $classname; |
68f943b3 |
213 | } |
214 | |
d0b74c17 |
215 | return $temp; |
ffed8b01 |
216 | } |
217 | |
e00d0eb3 |
218 | sub _check_legality { |
219 | my $self = shift; |
220 | my ($val) = @_; |
221 | |
222 | my $r = Scalar::Util::reftype( $val ); |
223 | |
224 | return $r if !defined $r || '' eq $r; |
225 | return $r if 'HASH' eq $r; |
226 | return $r if 'ARRAY' eq $r; |
227 | |
228 | DBM::Deep->_throw_error( |
229 | "Storage of references of type '$r' is not supported." |
230 | ); |
231 | } |
232 | |
ffed8b01 |
233 | sub import { |
e00d0eb3 |
234 | # Perl calls import() on use -- ignore |
235 | return if !ref $_[0]; |
d0b74c17 |
236 | |
994ccd8e |
237 | my $self = shift->_get_self; |
238 | my ($struct) = @_; |
d0b74c17 |
239 | |
e00d0eb3 |
240 | my $type = $self->_check_legality( $struct ); |
241 | if ( !$type ) { |
242 | DBM::Deep->_throw_error( "Cannot import a scalar" ); |
d0b74c17 |
243 | } |
244 | |
e00d0eb3 |
245 | if ( substr( $type, 0, 1 ) ne $self->_type ) { |
246 | DBM::Deep->_throw_error( |
247 | "Cannot import " . ('HASH' eq $type ? 'a hash' : 'an array') |
248 | . " into " . ('HASH' eq $type ? 'an array' : 'a hash') |
249 | ); |
7a960a12 |
250 | } |
251 | |
e00d0eb3 |
252 | my %seen; |
253 | my $recurse; |
254 | $recurse = sub { |
255 | my ($db, $val) = @_; |
256 | |
257 | my $obj = 'HASH' eq Scalar::Util::reftype( $db ) ? tied(%$db) : tied(@$db); |
258 | $obj ||= $db; |
259 | |
260 | my $r = $self->_check_legality( $val ); |
261 | if ( 'HASH' eq $r ) { |
262 | while ( my ($k, $v) = each %$val ) { |
263 | my $r = $self->_check_legality( $v ); |
264 | if ( $r ) { |
265 | my $temp = 'HASH' eq $r ? {} : []; |
266 | if ( my $c = Scalar::Util::blessed( $v ) ) { |
267 | bless $temp, $c; |
268 | } |
269 | $obj->put( $k, $temp ); |
270 | $recurse->( $temp, $v ); |
271 | } |
272 | else { |
273 | $obj->put( $k, $v ); |
274 | } |
275 | } |
276 | } |
277 | elsif ( 'ARRAY' eq $r ) { |
278 | foreach my $k ( 0 .. $#$val ) { |
279 | my $v = $val->[$k]; |
280 | my $r = $self->_check_legality( $v ); |
281 | if ( $r ) { |
282 | my $temp = 'HASH' eq $r ? {} : []; |
283 | if ( my $c = Scalar::Util::blessed( $v ) ) { |
284 | bless $temp, $c; |
285 | } |
286 | $obj->put( $k, $temp ); |
287 | $recurse->( $temp, $v ); |
288 | } |
289 | else { |
290 | $obj->put( $k, $v ); |
291 | } |
292 | } |
293 | } |
294 | }; |
295 | $recurse->( $self, $struct ); |
296 | |
7a960a12 |
297 | return 1; |
ffed8b01 |
298 | } |
299 | |
13ff93d5 |
300 | #XXX Need to keep track of who has a fh to this file in order to |
301 | #XXX close them all prior to optimize on Win32/cygwin |
ffed8b01 |
302 | sub optimize { |
d0b74c17 |
303 | ## |
304 | # Rebuild entire database into new file, then move |
305 | # it back on top of original. |
306 | ## |
994ccd8e |
307 | my $self = shift->_get_self; |
cc4bef86 |
308 | |
309 | #XXX Need to create a new test for this |
83371fe3 |
310 | # if ($self->_storage->{links} > 1) { |
1400a48e |
311 | # $self->_throw_error("Cannot optimize: reference count is greater than 1"); |
d0b74c17 |
312 | # } |
313 | |
7a960a12 |
314 | #XXX Do we have to lock the tempfile? |
315 | |
e00d0eb3 |
316 | #XXX Should we use tempfile() here instead of a hard-coded name? |
6e6789b0 |
317 | my $temp_filename = $self->_storage->{file} . '.tmp'; |
d0b74c17 |
318 | my $db_temp = DBM::Deep->new( |
6e6789b0 |
319 | file => $temp_filename, |
2120a181 |
320 | type => $self->_type, |
321 | |
322 | # Bring over all the parameters that we need to bring over |
888453b9 |
323 | ( map { $_ => $self->_engine->$_ } qw( |
324 | byte_size max_buckets data_sector_size num_txns |
325 | )), |
d0b74c17 |
326 | ); |
d0b74c17 |
327 | |
328 | $self->lock(); |
c57b19c6 |
329 | $self->_engine->clear_cache; |
d0b74c17 |
330 | $self->_copy_node( $db_temp ); |
331 | undef $db_temp; |
332 | |
333 | ## |
334 | # Attempt to copy user, group and permissions over to new file |
335 | ## |
6e6789b0 |
336 | $self->_storage->copy_stats( $temp_filename ); |
d0b74c17 |
337 | |
ffed8b01 |
338 | # q.v. perlport for more information on this variable |
90f93b43 |
339 | if ( $^O eq 'MSWin32' || $^O eq 'cygwin' ) { |
d0b74c17 |
340 | ## |
341 | # Potential race condition when optmizing on Win32 with locking. |
342 | # The Windows filesystem requires that the filehandle be closed |
343 | # before it is overwritten with rename(). This could be redone |
344 | # with a soft copy. |
345 | ## |
346 | $self->unlock(); |
83371fe3 |
347 | $self->_storage->close; |
d0b74c17 |
348 | } |
349 | |
6e6789b0 |
350 | if (!rename $temp_filename, $self->_storage->{file}) { |
351 | unlink $temp_filename; |
d0b74c17 |
352 | $self->unlock(); |
1400a48e |
353 | $self->_throw_error("Optimize failed: Cannot copy temp file over original: $!"); |
d0b74c17 |
354 | } |
355 | |
356 | $self->unlock(); |
83371fe3 |
357 | $self->_storage->close; |
2120a181 |
358 | |
83371fe3 |
359 | $self->_storage->open; |
2120a181 |
360 | $self->lock(); |
72e315ac |
361 | $self->_engine->setup_fh( $self ); |
2120a181 |
362 | $self->unlock(); |
70b55428 |
363 | |
d0b74c17 |
364 | return 1; |
ffed8b01 |
365 | } |
366 | |
367 | sub clone { |
d0b74c17 |
368 | ## |
369 | # Make copy of object and return |
370 | ## |
994ccd8e |
371 | my $self = shift->_get_self; |
d0b74c17 |
372 | |
373 | return DBM::Deep->new( |
c3aafc14 |
374 | type => $self->_type, |
d0b74c17 |
375 | base_offset => $self->_base_offset, |
2120a181 |
376 | staleness => $self->_staleness, |
83371fe3 |
377 | storage => $self->_storage, |
2120a181 |
378 | engine => $self->_engine, |
d0b74c17 |
379 | ); |
ffed8b01 |
380 | } |
381 | |
2120a181 |
382 | #XXX Migrate this to the engine, where it really belongs and go through some |
383 | # API - stop poking in the innards of someone else.. |
ffed8b01 |
384 | { |
385 | my %is_legal_filter = map { |
386 | $_ => ~~1, |
387 | } qw( |
388 | store_key store_value |
389 | fetch_key fetch_value |
390 | ); |
391 | |
392 | sub set_filter { |
994ccd8e |
393 | my $self = shift->_get_self; |
394 | my $type = lc shift; |
395 | my $func = shift; |
d0b74c17 |
396 | |
ffed8b01 |
397 | if ( $is_legal_filter{$type} ) { |
83371fe3 |
398 | $self->_storage->{"filter_$type"} = $func; |
ffed8b01 |
399 | return 1; |
400 | } |
401 | |
402 | return; |
403 | } |
888453b9 |
404 | |
405 | sub filter_store_key { $_[0]->set_filter( store_key => $_[1] ); } |
406 | sub filter_store_value { $_[0]->set_filter( store_value => $_[1] ); } |
407 | sub filter_fetch_key { $_[0]->set_filter( fetch_key => $_[1] ); } |
408 | sub filter_fetch_value { $_[0]->set_filter( fetch_value => $_[1] ); } |
ffed8b01 |
409 | } |
410 | |
fee0243f |
411 | sub begin_work { |
412 | my $self = shift->_get_self; |
2120a181 |
413 | return $self->_engine->begin_work( $self, @_ ); |
fee0243f |
414 | } |
415 | |
416 | sub rollback { |
417 | my $self = shift->_get_self; |
2120a181 |
418 | return $self->_engine->rollback( $self, @_ ); |
fee0243f |
419 | } |
420 | |
359a01ac |
421 | sub commit { |
422 | my $self = shift->_get_self; |
2120a181 |
423 | return $self->_engine->commit( $self, @_ ); |
359a01ac |
424 | } |
fee0243f |
425 | |
ffed8b01 |
426 | ## |
427 | # Accessor methods |
428 | ## |
429 | |
72e315ac |
430 | sub _engine { |
431 | my $self = $_[0]->_get_self; |
432 | return $self->{engine}; |
433 | } |
434 | |
83371fe3 |
435 | sub _storage { |
2ac02042 |
436 | my $self = $_[0]->_get_self; |
83371fe3 |
437 | return $self->{storage}; |
ffed8b01 |
438 | } |
439 | |
4d35d856 |
440 | sub _type { |
2ac02042 |
441 | my $self = $_[0]->_get_self; |
d0b74c17 |
442 | return $self->{type}; |
ffed8b01 |
443 | } |
444 | |
4d35d856 |
445 | sub _base_offset { |
2ac02042 |
446 | my $self = $_[0]->_get_self; |
d0b74c17 |
447 | return $self->{base_offset}; |
ffed8b01 |
448 | } |
449 | |
2120a181 |
450 | sub _staleness { |
451 | my $self = $_[0]->_get_self; |
452 | return $self->{staleness}; |
453 | } |
454 | |
ffed8b01 |
455 | ## |
456 | # Utility methods |
457 | ## |
458 | |
261d1296 |
459 | sub _throw_error { |
807f63a7 |
460 | my $n = 0; |
461 | while( 1 ) { |
462 | my @caller = caller( ++$n ); |
463 | next if $caller[0] =~ m/^DBM::Deep/; |
464 | |
465 | die "DBM::Deep: $_[1] at $0 line $caller[2]\n"; |
807f63a7 |
466 | } |
ffed8b01 |
467 | } |
468 | |
ffed8b01 |
469 | sub STORE { |
d0b74c17 |
470 | ## |
471 | # Store single hash key/value or array element in database. |
472 | ## |
473 | my $self = shift->_get_self; |
2120a181 |
474 | my ($key, $value) = @_; |
6e6789b0 |
475 | warn "STORE($self, $key, $value)\n" if DEBUG; |
81d3d316 |
476 | |
6e6789b0 |
477 | unless ( $self->_storage->is_writable ) { |
acd4faf2 |
478 | $self->_throw_error( 'Cannot write to a readonly filehandle' ); |
479 | } |
d0b74c17 |
480 | |
481 | ## |
482 | # Request exclusive lock for writing |
483 | ## |
484 | $self->lock( LOCK_EX ); |
485 | |
0cb639bd |
486 | # User may be storing a complex value, in which case we do not want it run |
487 | # through the filtering system. |
83371fe3 |
488 | if ( !ref($value) && $self->_storage->{filter_store_value} ) { |
489 | $value = $self->_storage->{filter_store_value}->( $value ); |
d0b74c17 |
490 | } |
491 | |
2120a181 |
492 | $self->_engine->write_value( $self, $key, $value); |
d0b74c17 |
493 | |
494 | $self->unlock(); |
495 | |
86867f3a |
496 | return 1; |
ffed8b01 |
497 | } |
498 | |
499 | sub FETCH { |
d0b74c17 |
500 | ## |
501 | # Fetch single value or element given plain key or array index |
502 | ## |
cb79ec85 |
503 | my $self = shift->_get_self; |
2120a181 |
504 | my ($key) = @_; |
6e6789b0 |
505 | warn "FETCH($self,$key)\n" if DEBUG; |
ffed8b01 |
506 | |
d0b74c17 |
507 | ## |
508 | # Request shared lock for reading |
509 | ## |
510 | $self->lock( LOCK_SH ); |
511 | |
2120a181 |
512 | my $result = $self->_engine->read_value( $self, $key); |
d0b74c17 |
513 | |
514 | $self->unlock(); |
515 | |
a86430bd |
516 | # Filters only apply to scalar values, so the ref check is making |
517 | # sure the fetched bucket is a scalar, not a child hash or array. |
83371fe3 |
518 | return ($result && !ref($result) && $self->_storage->{filter_fetch_value}) |
519 | ? $self->_storage->{filter_fetch_value}->($result) |
cb79ec85 |
520 | : $result; |
ffed8b01 |
521 | } |
522 | |
523 | sub DELETE { |
d0b74c17 |
524 | ## |
525 | # Delete single key/value pair or element given plain key or array index |
526 | ## |
a97c8f67 |
527 | my $self = shift->_get_self; |
2120a181 |
528 | my ($key) = @_; |
6e6789b0 |
529 | warn "DELETE($self,$key)\n" if DEBUG; |
d0b74c17 |
530 | |
6e6789b0 |
531 | unless ( $self->_storage->is_writable ) { |
a86430bd |
532 | $self->_throw_error( 'Cannot write to a readonly filehandle' ); |
533 | } |
d0b74c17 |
534 | |
535 | ## |
536 | # Request exclusive lock for writing |
537 | ## |
538 | $self->lock( LOCK_EX ); |
539 | |
d0b74c17 |
540 | ## |
541 | # Delete bucket |
542 | ## |
2120a181 |
543 | my $value = $self->_engine->delete_key( $self, $key); |
a86430bd |
544 | |
83371fe3 |
545 | if (defined $value && !ref($value) && $self->_storage->{filter_fetch_value}) { |
546 | $value = $self->_storage->{filter_fetch_value}->($value); |
3b6a5056 |
547 | } |
548 | |
d0b74c17 |
549 | $self->unlock(); |
550 | |
551 | return $value; |
ffed8b01 |
552 | } |
553 | |
554 | sub EXISTS { |
d0b74c17 |
555 | ## |
556 | # Check if a single key or element exists given plain key or array index |
557 | ## |
a97c8f67 |
558 | my $self = shift->_get_self; |
559 | my ($key) = @_; |
6e6789b0 |
560 | warn "EXISTS($self,$key)\n" if DEBUG; |
d0b74c17 |
561 | |
d0b74c17 |
562 | ## |
563 | # Request shared lock for reading |
564 | ## |
565 | $self->lock( LOCK_SH ); |
566 | |
2120a181 |
567 | my $result = $self->_engine->key_exists( $self, $key ); |
d0b74c17 |
568 | |
569 | $self->unlock(); |
570 | |
571 | return $result; |
ffed8b01 |
572 | } |
573 | |
574 | sub CLEAR { |
d0b74c17 |
575 | ## |
576 | # Clear all keys from hash, or all elements from array. |
577 | ## |
a97c8f67 |
578 | my $self = shift->_get_self; |
6e6789b0 |
579 | warn "CLEAR($self)\n" if DEBUG; |
ffed8b01 |
580 | |
6e6789b0 |
581 | unless ( $self->_storage->is_writable ) { |
a86430bd |
582 | $self->_throw_error( 'Cannot write to a readonly filehandle' ); |
583 | } |
584 | |
d0b74c17 |
585 | ## |
586 | # Request exclusive lock for writing |
587 | ## |
588 | $self->lock( LOCK_EX ); |
589 | |
2120a181 |
590 | #XXX Rewrite this dreck to do it in the engine as a tight loop vs. |
591 | # iterating over keys - such a WASTE - is this required for transactional |
592 | # clearning?! Surely that can be detected in the engine ... |
f9a320bb |
593 | if ( $self->_type eq TYPE_HASH ) { |
594 | my $key = $self->first_key; |
595 | while ( $key ) { |
83c43bb5 |
596 | # Retrieve the key before deleting because we depend on next_key |
f9a320bb |
597 | my $next_key = $self->next_key( $key ); |
2120a181 |
598 | $self->_engine->delete_key( $self, $key, $key ); |
f9a320bb |
599 | $key = $next_key; |
600 | } |
601 | } |
602 | else { |
603 | my $size = $self->FETCHSIZE; |
c3aafc14 |
604 | for my $key ( 0 .. $size - 1 ) { |
2120a181 |
605 | $self->_engine->delete_key( $self, $key, $key ); |
f9a320bb |
606 | } |
607 | $self->STORESIZE( 0 ); |
608 | } |
d0b74c17 |
609 | |
610 | $self->unlock(); |
611 | |
612 | return 1; |
ffed8b01 |
613 | } |
614 | |
ffed8b01 |
615 | ## |
616 | # Public method aliases |
617 | ## |
7f441181 |
618 | sub put { (shift)->STORE( @_ ) } |
619 | sub store { (shift)->STORE( @_ ) } |
620 | sub get { (shift)->FETCH( @_ ) } |
621 | sub fetch { (shift)->FETCH( @_ ) } |
baa27ab6 |
622 | sub delete { (shift)->DELETE( @_ ) } |
623 | sub exists { (shift)->EXISTS( @_ ) } |
624 | sub clear { (shift)->CLEAR( @_ ) } |
ffed8b01 |
625 | |
888453b9 |
626 | sub _dump_file {shift->_get_self->_engine->_dump_file;} |
627 | |
ffed8b01 |
628 | 1; |
ffed8b01 |
629 | __END__ |