Commit | Line | Data |
fcec2383 |
1 | #!/usr/bin/perl |
2 | |
3 | use strict; |
4 | use warnings; |
5 | |
047248f9 |
6 | use Test::More; |
7 | |
8 | BEGIN { |
9 | eval "use DBM::Deep;"; |
10 | plan skip_all => "DBM::Deep required for this test" if $@; |
b68e5362 |
11 | plan tests => 89; |
047248f9 |
12 | } |
13 | |
fcec2383 |
14 | use Test::Exception; |
15 | |
16 | BEGIN { |
17 | use_ok('Moose'); |
18 | } |
19 | |
b68e5362 |
20 | =pod |
21 | |
22 | This example creates a very basic Object Database which |
23 | links in the instances created with a backend store |
24 | (a DBM::Deep hash). It is by no means to be taken seriously |
25 | as a real-world ODB (see Presto for that), but is a proof |
26 | of concept of the flexibility of the ::Instance protocol. |
27 | |
28 | =cut |
29 | |
fcec2383 |
30 | BEGIN { |
31 | |
32 | package Newswriter::Meta::Instance; |
33 | use strict; |
34 | use warnings; |
35 | use Moose; |
36 | |
37 | use DBM::Deep; |
38 | |
39 | extends 'Moose::Meta::Instance'; |
40 | |
41 | { |
b68e5362 |
42 | my %INSTANCE_COUNTERS; |
fcec2383 |
43 | |
44 | my $db = DBM::Deep->new({ |
047248f9 |
45 | file => "newswriter.db", |
46 | autobless => 1, |
47 | locking => 1, |
fcec2383 |
48 | }); |
fcec2383 |
49 | |
fcec2383 |
50 | sub _reload_db { |
b68e5362 |
51 | #use Data::Dumper; |
52 | #warn Dumper $db; |
047248f9 |
53 | $db = undef; |
fcec2383 |
54 | $db = DBM::Deep->new({ |
047248f9 |
55 | file => "newswriter.db", |
56 | autobless => 1, |
57 | locking => 1, |
58 | }); |
fcec2383 |
59 | } |
60 | |
61 | sub create_instance { |
b68e5362 |
62 | my $self = shift; |
63 | my $class = $self->{meta}->name; |
64 | my $oid = ++$INSTANCE_COUNTERS{$class}; |
65 | |
66 | $db->{$class}->[($oid - 1)] = {}; |
fcec2383 |
67 | |
68 | $self->bless_instance_structure({ |
b68e5362 |
69 | oid => $oid, |
70 | instance => $db->{$class}->[($oid - 1)] |
fcec2383 |
71 | }); |
72 | } |
73 | |
74 | sub find_instance { |
75 | my ($self, $oid) = @_; |
b68e5362 |
76 | my $instance = $db->{$self->{meta}->name}->[($oid - 1)]; |
77 | $self->bless_instance_structure({ |
78 | oid => $oid, |
79 | instance => $instance |
80 | }); |
81 | } |
82 | |
83 | sub clone_instance { |
84 | my ($self, $instance) = @_; |
85 | |
86 | my $class = $self->{meta}->name; |
87 | my $oid = ++$INSTANCE_COUNTERS{$class}; |
88 | |
89 | my $clone = tied($instance)->clone; |
fcec2383 |
90 | |
91 | $self->bless_instance_structure({ |
92 | oid => $oid, |
b68e5362 |
93 | instance => $clone |
94 | }); |
95 | } |
fcec2383 |
96 | } |
97 | |
98 | sub get_instance_oid { |
99 | my ($self, $instance) = @_; |
100 | $instance->{oid}; |
101 | } |
102 | |
fcec2383 |
103 | sub get_slot_value { |
104 | my ($self, $instance, $slot_name) = @_; |
105 | return $instance->{instance}->{$slot_name}; |
106 | } |
107 | |
108 | sub set_slot_value { |
109 | my ($self, $instance, $slot_name, $value) = @_; |
110 | $instance->{instance}->{$slot_name} = $value; |
111 | } |
112 | |
113 | sub is_slot_initialized { |
114 | my ($self, $instance, $slot_name, $value) = @_; |
115 | exists $instance->{instance}->{$slot_name} ? 1 : 0; |
116 | } |
117 | |
118 | sub weaken_slot_value { |
119 | confess "Not sure how well DBM::Deep plays with weak refs, Rob says 'Writer a test'"; |
120 | } |
121 | |
122 | sub inline_slot_access { |
123 | my ($self, $instance, $slot_name) = @_; |
124 | sprintf "%s->{instance}->{%s}", $instance, $slot_name; |
125 | } |
126 | |
127 | package Newswriter::Meta::Class; |
128 | use strict; |
129 | use warnings; |
130 | use Moose; |
131 | |
132 | extends 'Moose::Meta::Class'; |
133 | |
134 | override 'construct_instance' => sub { |
135 | my ($class, %params) = @_; |
136 | return $class->get_meta_instance->find_instance($params{oid}) |
137 | if $params{oid}; |
138 | super(); |
139 | }; |
140 | } |
141 | |
142 | { |
143 | package Newswriter::Base; |
144 | use strict; |
145 | use warnings; |
146 | use metaclass 'Newswriter::Meta::Class' => ( |
147 | ':instance_metaclass' => 'Newswriter::Meta::Instance' |
148 | ); |
149 | use Moose; |
150 | |
151 | sub oid { |
152 | my $self = shift; |
153 | $self->meta |
154 | ->get_meta_instance |
155 | ->get_instance_oid($self); |
156 | } |
157 | |
158 | package Newswriter::Author; |
159 | use strict; |
be33e4f3 |
160 | use warnings; |
fcec2383 |
161 | use Moose; |
162 | |
163 | extends 'Newswriter::Base'; |
164 | |
165 | has 'first_name' => (is => 'rw', isa => 'Str'); |
166 | has 'last_name' => (is => 'rw', isa => 'Str'); |
167 | |
168 | package Newswriter::Article; |
169 | use strict; |
170 | use warnings; |
fcec2383 |
171 | use Moose; |
172 | use Moose::Util::TypeConstraints; |
173 | |
174 | use DateTime::Format::MySQL; |
175 | |
047248f9 |
176 | extends 'Newswriter::Base'; |
fcec2383 |
177 | |
178 | subtype 'Headline' |
179 | => as 'Str' |
180 | => where { length($_) < 100 }; |
181 | |
182 | subtype 'Summary' |
183 | => as 'Str' |
184 | => where { length($_) < 255 }; |
185 | |
186 | subtype 'DateTimeFormatString' |
187 | => as 'Str' |
188 | => where { DateTime::Format::MySQL->parse_datetime($_) }; |
189 | |
190 | enum 'Status' => qw(draft posted pending archive); |
191 | |
192 | has 'headline' => (is => 'rw', isa => 'Headline'); |
193 | has 'summary' => (is => 'rw', isa => 'Summary'); |
194 | has 'article' => (is => 'rw', isa => 'Str'); |
195 | |
196 | has 'start_date' => (is => 'rw', isa => 'DateTimeFormatString'); |
197 | has 'end_date' => (is => 'rw', isa => 'DateTimeFormatString'); |
198 | |
199 | has 'author' => (is => 'rw', isa => 'Newswriter::Author'); |
200 | |
201 | has 'status' => (is => 'rw', isa => 'Status'); |
202 | |
203 | around 'start_date', 'end_date' => sub { |
204 | my $c = shift; |
205 | my $self = shift; |
206 | $c->($self, DateTime::Format::MySQL->format_datetime($_[0])) if @_; |
b68e5362 |
207 | DateTime::Format::MySQL->parse_datetime($c->($self) || return undef); |
fcec2383 |
208 | }; |
209 | } |
210 | |
211 | { # check the meta stuff first |
212 | isa_ok(Newswriter::Base->meta, 'Newswriter::Meta::Class'); |
213 | isa_ok(Newswriter::Base->meta, 'Moose::Meta::Class'); |
214 | isa_ok(Newswriter::Base->meta, 'Class::MOP::Class'); |
215 | |
216 | is(Newswriter::Base->meta->instance_metaclass, |
217 | 'Newswriter::Meta::Instance', |
218 | '... got the right instance metaclass name'); |
219 | |
220 | isa_ok(Newswriter::Base->meta->get_meta_instance, 'Newswriter::Meta::Instance'); |
221 | |
222 | my $base = Newswriter::Base->new; |
223 | isa_ok($base, 'Newswriter::Base'); |
224 | isa_ok($base, 'Moose::Object'); |
225 | |
226 | isa_ok($base->meta, 'Newswriter::Meta::Class'); |
227 | isa_ok($base->meta, 'Moose::Meta::Class'); |
228 | isa_ok($base->meta, 'Class::MOP::Class'); |
229 | |
230 | is($base->meta->instance_metaclass, |
231 | 'Newswriter::Meta::Instance', |
232 | '... got the right instance metaclass name'); |
233 | |
234 | isa_ok($base->meta->get_meta_instance, 'Newswriter::Meta::Instance'); |
235 | } |
236 | |
237 | my $article_oid; |
238 | my $article_ref; |
239 | { |
240 | my $article; |
241 | lives_ok { |
242 | $article = Newswriter::Article->new( |
243 | headline => 'Home Office Redecorated', |
244 | summary => 'The home office was recently redecorated to match the new company colors', |
245 | article => '...', |
246 | |
247 | author => Newswriter::Author->new( |
248 | first_name => 'Truman', |
249 | last_name => 'Capote' |
250 | ), |
251 | |
252 | status => 'pending' |
253 | ); |
254 | } '... created my article successfully'; |
255 | isa_ok($article, 'Newswriter::Article'); |
256 | isa_ok($article, 'Newswriter::Base'); |
257 | |
258 | lives_ok { |
259 | $article->start_date(DateTime->new(year => 2006, month => 6, day => 10)); |
260 | $article->end_date(DateTime->new(year => 2006, month => 6, day => 17)); |
261 | } '... add the article date-time stuff'; |
262 | |
263 | ## check some meta stuff |
264 | |
265 | isa_ok($article->meta, 'Newswriter::Meta::Class'); |
266 | isa_ok($article->meta, 'Moose::Meta::Class'); |
267 | isa_ok($article->meta, 'Class::MOP::Class'); |
268 | |
269 | is($article->meta->instance_metaclass, |
270 | 'Newswriter::Meta::Instance', |
271 | '... got the right instance metaclass name'); |
272 | |
273 | isa_ok($article->meta->get_meta_instance, 'Newswriter::Meta::Instance'); |
274 | |
275 | ok($article->oid, '... got a oid for the article'); |
276 | |
277 | $article_oid = $article->oid; |
278 | $article_ref = "$article"; |
279 | |
280 | is($article->headline, |
281 | 'Home Office Redecorated', |
282 | '... got the right headline'); |
283 | is($article->summary, |
284 | 'The home office was recently redecorated to match the new company colors', |
285 | '... got the right summary'); |
286 | is($article->article, '...', '... got the right article'); |
287 | |
288 | isa_ok($article->start_date, 'DateTime'); |
289 | isa_ok($article->end_date, 'DateTime'); |
290 | |
291 | isa_ok($article->author, 'Newswriter::Author'); |
292 | is($article->author->first_name, 'Truman', '... got the right author first name'); |
293 | is($article->author->last_name, 'Capote', '... got the right author last name'); |
294 | |
295 | is($article->status, 'pending', '... got the right status'); |
296 | } |
297 | |
298 | Newswriter::Meta::Instance->_reload_db(); |
299 | |
b68e5362 |
300 | my $article2_oid; |
301 | my $article2_ref; |
fcec2383 |
302 | { |
b68e5362 |
303 | my $article2; |
304 | lives_ok { |
305 | $article2 = Newswriter::Article->new( |
306 | headline => 'Company wins Lottery', |
307 | summary => 'An email was received today that informed the company we have won the lottery', |
308 | article => 'WoW', |
309 | |
310 | author => Newswriter::Author->new( |
311 | first_name => 'Katie', |
312 | last_name => 'Couric' |
313 | ), |
314 | |
315 | status => 'posted' |
316 | ); |
317 | } '... created my article successfully'; |
318 | isa_ok($article2, 'Newswriter::Article'); |
319 | isa_ok($article2, 'Newswriter::Base'); |
320 | |
321 | $article2_oid = $article2->oid; |
322 | $article2_ref = "$article2"; |
323 | |
324 | is($article2->headline, |
325 | 'Company wins Lottery', |
326 | '... got the right headline'); |
327 | is($article2->summary, |
328 | 'An email was received today that informed the company we have won the lottery', |
329 | '... got the right summary'); |
330 | is($article2->article, 'WoW', '... got the right article'); |
331 | |
332 | ok(!$article2->start_date, '... these two dates are unassigned'); |
333 | ok(!$article2->end_date, '... these two dates are unassigned'); |
334 | |
335 | isa_ok($article2->author, 'Newswriter::Author'); |
336 | is($article2->author->first_name, 'Katie', '... got the right author first name'); |
337 | is($article2->author->last_name, 'Couric', '... got the right author last name'); |
338 | |
339 | is($article2->status, 'posted', '... got the right status'); |
340 | |
341 | ## orig-article |
342 | |
fcec2383 |
343 | my $article; |
344 | lives_ok { |
345 | $article = Newswriter::Article->new(oid => $article_oid); |
346 | } '... (re)-created my article successfully'; |
347 | isa_ok($article, 'Newswriter::Article'); |
348 | isa_ok($article, 'Newswriter::Base'); |
349 | |
350 | is($article->oid, $article_oid, '... got a oid for the article'); |
351 | isnt($article_ref, "$article", '... got a new article instance'); |
352 | |
353 | is($article->headline, |
354 | 'Home Office Redecorated', |
355 | '... got the right headline'); |
356 | is($article->summary, |
357 | 'The home office was recently redecorated to match the new company colors', |
358 | '... got the right summary'); |
359 | is($article->article, '...', '... got the right article'); |
360 | |
361 | isa_ok($article->start_date, 'DateTime'); |
362 | isa_ok($article->end_date, 'DateTime'); |
363 | |
364 | isa_ok($article->author, 'Newswriter::Author'); |
365 | is($article->author->first_name, 'Truman', '... got the right author first name'); |
366 | is($article->author->last_name, 'Capote', '... got the right author last name'); |
367 | |
368 | lives_ok { |
369 | $article->author->first_name('Dan'); |
370 | $article->author->last_name('Rather'); |
371 | } '... changed the value ok'; |
372 | |
373 | is($article->author->first_name, 'Dan', '... got the changed author first name'); |
374 | is($article->author->last_name, 'Rather', '... got the changed author last name'); |
375 | |
376 | is($article->status, 'pending', '... got the right status'); |
377 | } |
378 | |
379 | Newswriter::Meta::Instance->_reload_db(); |
380 | |
381 | { |
382 | my $article; |
383 | lives_ok { |
384 | $article = Newswriter::Article->new(oid => $article_oid); |
385 | } '... (re)-created my article successfully'; |
386 | isa_ok($article, 'Newswriter::Article'); |
387 | isa_ok($article, 'Newswriter::Base'); |
388 | |
389 | is($article->oid, $article_oid, '... got a oid for the article'); |
390 | isnt($article_ref, "$article", '... got a new article instance'); |
391 | |
392 | is($article->headline, |
393 | 'Home Office Redecorated', |
394 | '... got the right headline'); |
395 | is($article->summary, |
396 | 'The home office was recently redecorated to match the new company colors', |
397 | '... got the right summary'); |
398 | is($article->article, '...', '... got the right article'); |
399 | |
400 | isa_ok($article->start_date, 'DateTime'); |
401 | isa_ok($article->end_date, 'DateTime'); |
402 | |
403 | isa_ok($article->author, 'Newswriter::Author'); |
404 | is($article->author->first_name, 'Dan', '... got the changed author first name'); |
405 | is($article->author->last_name, 'Rather', '... got the changed author last name'); |
406 | |
407 | is($article->status, 'pending', '... got the right status'); |
b68e5362 |
408 | |
409 | my $article2; |
410 | lives_ok { |
411 | $article2 = Newswriter::Article->new(oid => $article2_oid); |
412 | } '... (re)-created my article successfully'; |
413 | isa_ok($article2, 'Newswriter::Article'); |
414 | isa_ok($article2, 'Newswriter::Base'); |
415 | |
416 | is($article2->oid, $article2_oid, '... got a oid for the article'); |
417 | isnt($article2_ref, "$article2", '... got a new article instance'); |
418 | |
419 | is($article2->headline, |
420 | 'Company wins Lottery', |
421 | '... got the right headline'); |
422 | is($article2->summary, |
423 | 'An email was received today that informed the company we have won the lottery', |
424 | '... got the right summary'); |
425 | is($article2->article, 'WoW', '... got the right article'); |
426 | |
427 | ok(!$article2->start_date, '... these two dates are unassigned'); |
428 | ok(!$article2->end_date, '... these two dates are unassigned'); |
429 | |
430 | isa_ok($article2->author, 'Newswriter::Author'); |
431 | is($article2->author->first_name, 'Katie', '... got the right author first name'); |
432 | is($article2->author->last_name, 'Couric', '... got the right author last name'); |
433 | |
434 | is($article2->status, 'posted', '... got the right status'); |
435 | |
fcec2383 |
436 | } |
437 | |
438 | unlink('newswriter.db') if -e 'newswriter.db'; |