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9398955f |
1 | package SQL::Translator::Producer::MySQL; |
2 | |
49e1eb70 |
3 | # ------------------------------------------------------------------- |
478f608d |
4 | # Copyright (C) 2002-2009 SQLFairy Authors |
9398955f |
5 | # |
6 | # This program is free software; you can redistribute it and/or |
7 | # modify it under the terms of the GNU General Public License as |
8 | # published by the Free Software Foundation; version 2. |
9 | # |
10 | # This program is distributed in the hope that it will be useful, but |
11 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | # General Public License for more details. |
14 | # |
15 | # You should have received a copy of the GNU General Public License |
16 | # along with this program; if not, write to the Free Software |
17 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
18 | # 02111-1307 USA |
19 | # ------------------------------------------------------------------- |
20 | |
c855a748 |
21 | =head1 NAME |
22 | |
23 | SQL::Translator::Producer::MySQL - MySQL-specific producer for SQL::Translator |
24 | |
25 | =head1 SYNOPSIS |
26 | |
27 | Use via SQL::Translator: |
28 | |
29 | use SQL::Translator; |
30 | |
31 | my $t = SQL::Translator->new( parser => '...', producer => 'MySQL', '...' ); |
32 | $t->translate; |
33 | |
34 | =head1 DESCRIPTION |
35 | |
36 | This module will produce text output of the schema suitable for MySQL. |
37 | There are still some issues to be worked out with syntax differences |
38 | between MySQL versions 3 and 4 ("SET foreign_key_checks," character sets |
39 | for fields, etc.). |
40 | |
5d666b31 |
41 | =head1 ARGUMENTS |
42 | |
43 | This producer takes a single optional producer_arg C<mysql_version>, which |
44 | provides the desired version for the target database. By default MySQL v3 is |
45 | assumed, and statements pertaining to any features introduced in later versions |
46 | (e.g. CREATE VIEW) are not produced. |
47 | |
94929d12 |
48 | Valid version specifiers for C<mysql_version> are listed L<here|SQL::Translator::Utils/parse_mysql_version> |
5d666b31 |
49 | |
5a0c7b43 |
50 | =head2 Table Types |
51 | |
52 | Normally the tables will be created without any explicit table type given and |
53 | so will use the MySQL default. |
54 | |
55 | Any tables involved in foreign key constraints automatically get a table type |
56 | of InnoDB, unless this is overridden by setting the C<mysql_table_type> extra |
57 | attribute explicitly on the table. |
58 | |
59 | =head2 Extra attributes. |
60 | |
61 | The producer recognises the following extra attributes on the Schema objects. |
62 | |
63 | =over 4 |
64 | |
7467c458 |
65 | =item B<field.list> |
5a0c7b43 |
66 | |
67 | Set the list of allowed values for Enum fields. |
68 | |
7467c458 |
69 | =item B<field.binary>, B<field.unsigned>, B<field.zerofill> |
5a0c7b43 |
70 | |
71 | Set the MySQL field options of the same name. |
72 | |
7467c458 |
73 | =item B<field.renamed_from>, B<table.renamed_from> |
4d438549 |
74 | |
7467c458 |
75 | Use when producing diffs to indicate that the current table/field has been |
76 | renamed from the old name as given in the attribute value. |
4d438549 |
77 | |
7467c458 |
78 | =item B<table.mysql_table_type> |
5a0c7b43 |
79 | |
80 | Set the type of the table e.g. 'InnoDB', 'MyISAM'. This will be |
81 | automatically set for tables involved in foreign key constraints if it is |
82 | not already set explicitly. See L<"Table Types">. |
83 | |
10f70490 |
84 | Please note that the C<ENGINE> option is the preferred method of specifying |
7467c458 |
85 | the MySQL storage engine to use, but this method still works for backwards |
10f70490 |
86 | compatibility. |
7467c458 |
87 | |
88 | =item B<table.mysql_charset>, B<table.mysql_collate> |
1ded8513 |
89 | |
90 | Set the tables default charater set and collation order. |
91 | |
7467c458 |
92 | =item B<field.mysql_charset>, B<field.mysql_collate> |
1ded8513 |
93 | |
94 | Set the fields charater set and collation order. |
95 | |
5a0c7b43 |
96 | =back |
97 | |
c855a748 |
98 | =cut |
99 | |
9398955f |
100 | use strict; |
cd0ea0fd |
101 | use warnings; |
da06ac74 |
102 | use vars qw[ $VERSION $DEBUG %used_names ]; |
11ad2df9 |
103 | $VERSION = '1.59'; |
5636ed00 |
104 | $DEBUG = 0 unless defined $DEBUG; |
9398955f |
105 | |
f5405d47 |
106 | # Maximum length for most identifiers is 64, according to: |
107 | # http://dev.mysql.com/doc/refman/4.1/en/identifiers.html |
108 | # http://dev.mysql.com/doc/refman/5.0/en/identifiers.html |
109 | my $DEFAULT_MAX_ID_LENGTH = 64; |
110 | |
9398955f |
111 | use Data::Dumper; |
1c14e9f1 |
112 | use SQL::Translator::Schema::Constants; |
edc4b5da |
113 | use SQL::Translator::Utils qw(debug header_comment |
114 | truncate_id_uniquely parse_mysql_version); |
9398955f |
115 | |
d2344c83 |
116 | # |
117 | # Use only lowercase for the keys (e.g. "long" and not "LONG") |
118 | # |
2620fc1c |
119 | my %translate = ( |
120 | # |
121 | # Oracle types |
122 | # |
123 | varchar2 => 'varchar', |
124 | long => 'text', |
d2344c83 |
125 | clob => 'longtext', |
2620fc1c |
126 | |
127 | # |
128 | # Sybase types |
129 | # |
130 | int => 'integer', |
131 | money => 'float', |
132 | real => 'double', |
133 | comment => 'text', |
134 | bit => 'tinyint', |
87779799 |
135 | |
136 | # |
137 | # Access types |
138 | # |
139 | 'long integer' => 'integer', |
140 | 'text' => 'text', |
141 | 'datetime' => 'datetime', |
08dd6593 |
142 | |
143 | # |
144 | # PostgreSQL types |
145 | # |
146 | bytea => 'BLOB', |
2620fc1c |
147 | ); |
148 | |
de176728 |
149 | # |
150 | # Column types that do not support lenth attribute |
151 | # |
152 | my @no_length_attr = qw/ |
153 | date time timestamp datetime year |
154 | /; |
155 | |
9ab59f87 |
156 | |
157 | sub preprocess_schema { |
934e1b39 |
158 | my ($schema) = @_; |
9ab59f87 |
159 | |
160 | # extra->{mysql_table_type} used to be the type. It belongs in options, so |
161 | # move it if we find it. Return Engine type if found in extra or options |
7725e1e6 |
162 | # Similarly for mysql_charset and mysql_collate |
163 | my $extra_to_options = sub { |
164 | my ($table, $extra_name, $opt_name) = @_; |
9ab59f87 |
165 | |
166 | my $extra = $table->extra; |
167 | |
7725e1e6 |
168 | my $extra_type = delete $extra->{$extra_name}; |
9ab59f87 |
169 | |
170 | # Now just to find if there is already an Engine or Type option... |
171 | # and lets normalize it to ENGINE since: |
172 | # |
173 | # The ENGINE table option specifies the storage engine for the table. |
174 | # TYPE is a synonym, but ENGINE is the preferred option name. |
175 | # |
176 | |
177 | # We have to use the hash directly here since otherwise there is no way |
178 | # to remove options. |
179 | my $options = ( $table->{options} ||= []); |
180 | |
7725e1e6 |
181 | # If multiple option names, normalize to the first one |
182 | if (ref $opt_name) { |
183 | OPT_NAME: for ( @$opt_name[1..$#$opt_name] ) { |
184 | for my $idx ( 0..$#{$options} ) { |
185 | my ($key, $value) = %{ $options->[$idx] }; |
186 | |
187 | if (uc $key eq $_) { |
188 | $options->[$idx] = { $opt_name->[0] => $value }; |
189 | last OPT_NAME; |
190 | } |
191 | } |
192 | } |
193 | $opt_name = $opt_name->[0]; |
194 | |
195 | } |
196 | |
197 | |
9ab59f87 |
198 | # This assumes that there isn't both a Type and an Engine option. |
7725e1e6 |
199 | OPTION: |
9ab59f87 |
200 | for my $idx ( 0..$#{$options} ) { |
201 | my ($key, $value) = %{ $options->[$idx] }; |
202 | |
7725e1e6 |
203 | next unless uc $key eq $opt_name; |
204 | |
205 | # make sure case is right on option name |
9ab59f87 |
206 | delete $options->[$idx]{$key}; |
7725e1e6 |
207 | return $options->[$idx]{$opt_name} = $value || $extra_type; |
9ab59f87 |
208 | |
209 | } |
210 | |
211 | if ($extra_type) { |
7725e1e6 |
212 | push @$options, { $opt_name => $extra_type }; |
9ab59f87 |
213 | return $extra_type; |
214 | } |
215 | |
216 | }; |
217 | |
1c680eb9 |
218 | # Names are only specific to a given schema |
219 | local %used_names = (); |
220 | |
9ab59f87 |
221 | # |
222 | # Work out which tables need to be InnoDB to support foreign key |
223 | # constraints. We do this first as we need InnoDB at both ends. |
224 | # |
225 | foreach my $table ( $schema->get_tables ) { |
7725e1e6 |
226 | |
227 | $extra_to_options->($table, 'mysql_table_type', ['ENGINE', 'TYPE'] ); |
228 | $extra_to_options->($table, 'mysql_charset', 'CHARACTER SET' ); |
229 | $extra_to_options->($table, 'mysql_collate', 'COLLATE' ); |
9ab59f87 |
230 | |
929ef265 |
231 | foreach my $c ( $table->get_constraints ) { |
1c680eb9 |
232 | next unless $c->type eq FOREIGN_KEY; |
233 | |
234 | # Normalize constraint names here. |
235 | my $c_name = $c->name; |
236 | # Give the constraint a name if it doesn't have one, so it doens't feel |
237 | # left out |
238 | $c_name = $table->name . '_fk' unless length $c_name; |
239 | |
240 | $c->name( next_unused_name($c_name) ); |
241 | |
9ab59f87 |
242 | for my $meth (qw/table reference_table/) { |
1c680eb9 |
243 | my $table = $schema->get_table($c->$meth) || next; |
7725e1e6 |
244 | # This normalizes the types to ENGINE and returns the value if its there |
245 | next if $extra_to_options->($table, 'mysql_table_type', ['ENGINE', 'TYPE']); |
9ab59f87 |
246 | $table->options( { 'ENGINE' => 'InnoDB' } ); |
247 | } |
929ef265 |
248 | } # foreach constraints |
249 | |
2c6be67a |
250 | my %map = ( mysql_collate => 'collate', mysql_charset => 'character set'); |
929ef265 |
251 | foreach my $f ( $table->get_fields ) { |
2c6be67a |
252 | my $extra = $f->extra; |
253 | for (keys %map) { |
254 | $extra->{$map{$_}} = delete $extra->{$_} if exists $extra->{$_}; |
255 | } |
256 | |
929ef265 |
257 | my @size = $f->size; |
258 | if ( !$size[0] && $f->data_type =~ /char$/ ) { |
259 | $f->size( (255) ); |
260 | } |
9ab59f87 |
261 | } |
929ef265 |
262 | |
9ab59f87 |
263 | } |
264 | } |
265 | |
9398955f |
266 | sub produce { |
a1d94525 |
267 | my $translator = shift; |
268 | local $DEBUG = $translator->debug; |
da5a1bae |
269 | local %used_names; |
a1d94525 |
270 | my $no_comments = $translator->no_comments; |
271 | my $add_drop_table = $translator->add_drop_table; |
272 | my $schema = $translator->schema; |
2bc23e82 |
273 | my $show_warnings = $translator->show_warnings || 0; |
ca1f9923 |
274 | my $producer_args = $translator->producer_args; |
5d666b31 |
275 | my $mysql_version = parse_mysql_version ($producer_args->{mysql_version}, 'perl') || 0; |
f5405d47 |
276 | my $max_id_length = $producer_args->{mysql_max_id_length} || $DEFAULT_MAX_ID_LENGTH; |
d529894e |
277 | |
7725e1e6 |
278 | my ($qt, $qf, $qc) = ('','', ''); |
fe0f47d0 |
279 | $qt = '`' if $translator->quote_table_names; |
280 | $qf = '`' if $translator->quote_field_names; |
281 | |
1a24938d |
282 | debug("PKG: Beginning production\n"); |
da5a1bae |
283 | %used_names = (); |
24d9fe69 |
284 | my $create = ''; |
5ee19df8 |
285 | $create .= header_comment unless ($no_comments); |
0823773d |
286 | # \todo Don't set if MySQL 3.x is set on command line |
24d9fe69 |
287 | my @create = "SET foreign_key_checks=0"; |
9398955f |
288 | |
934e1b39 |
289 | preprocess_schema($schema); |
5a0c7b43 |
290 | |
291 | # |
292 | # Generate sql |
293 | # |
cd0ea0fd |
294 | my @table_defs =(); |
4d438549 |
295 | |
1c14e9f1 |
296 | for my $table ( $schema->get_tables ) { |
cd0ea0fd |
297 | # print $table->name, "\n"; |
0013ee25 |
298 | push @table_defs, create_table($table, |
fe0f47d0 |
299 | { add_drop_table => $add_drop_table, |
300 | show_warnings => $show_warnings, |
301 | no_comments => $no_comments, |
302 | quote_table_names => $qt, |
ca1f9923 |
303 | quote_field_names => $qf, |
f5405d47 |
304 | max_id_length => $max_id_length, |
ca1f9923 |
305 | mysql_version => $mysql_version |
0013ee25 |
306 | }); |
307 | } |
9398955f |
308 | |
e30b71b8 |
309 | if ($mysql_version >= 5.000001) { |
83ddfeac |
310 | for my $view ( $schema->get_views ) { |
d28afa66 |
311 | push @table_defs, create_view($view, |
312 | { add_replace_view => $add_drop_table, |
313 | show_warnings => $show_warnings, |
314 | no_comments => $no_comments, |
315 | quote_table_names => $qt, |
316 | quote_field_names => $qf, |
317 | max_id_length => $max_id_length, |
318 | mysql_version => $mysql_version |
319 | }); |
83ddfeac |
320 | } |
d28afa66 |
321 | } |
322 | |
323 | |
cd0ea0fd |
324 | # print "@table_defs\n"; |
24d9fe69 |
325 | push @table_defs, "SET foreign_key_checks=1"; |
cd0ea0fd |
326 | |
24d9fe69 |
327 | return wantarray ? ($create ? $create : (), @create, @table_defs) : ($create . join('', map { $_ ? "$_;\n\n" : () } (@create, @table_defs))); |
0013ee25 |
328 | } |
9398955f |
329 | |
d28afa66 |
330 | sub create_view { |
331 | my ($view, $options) = @_; |
332 | my $qt = $options->{quote_table_names} || ''; |
333 | my $qf = $options->{quote_field_names} || ''; |
334 | |
335 | my $view_name = $view->name; |
336 | debug("PKG: Looking at view '${view_name}'\n"); |
337 | |
338 | # Header. Should this look like what mysqldump produces? |
339 | my $create = ''; |
340 | $create .= "--\n-- View: ${qt}${view_name}${qt}\n--\n" unless $options->{no_comments}; |
341 | $create .= 'CREATE'; |
342 | $create .= ' OR REPLACE' if $options->{add_replace_view}; |
343 | $create .= "\n"; |
344 | |
345 | my $extra = $view->extra; |
346 | # ALGORITHM |
347 | if( exists($extra->{mysql_algorithm}) && defined(my $algorithm = $extra->{mysql_algorithm}) ){ |
348 | $create .= " ALGORITHM = ${algorithm}\n" if $algorithm =~ /(?:UNDEFINED|MERGE|TEMPTABLE)/i; |
349 | } |
350 | # DEFINER |
351 | if( exists($extra->{mysql_definer}) && defined(my $user = $extra->{mysql_definer}) ){ |
352 | $create .= " DEFINER = ${user}\n"; |
353 | } |
354 | # SECURITY |
355 | if( exists($extra->{mysql_security}) && defined(my $security = $extra->{mysql_security}) ){ |
356 | $create .= " SQL SECURITY ${security}\n" if $security =~ /(?:DEFINER|INVOKER)/i; |
357 | } |
358 | |
359 | #Header, cont. |
360 | $create .= " VIEW ${qt}${view_name}${qt}"; |
361 | |
362 | if( my @fields = $view->fields ){ |
363 | my $list = join ', ', map { "${qf}${_}${qf}"} @fields; |
364 | $create .= " ( ${list} )"; |
365 | } |
366 | if( my $sql = $view->sql ){ |
1c8ec56e |
367 | # do not wrap parenthesis around the selector, mysql doesn't like this |
368 | # http://bugs.mysql.com/bug.php?id=9198 |
369 | $create .= " AS\n ${sql}\n"; |
d28afa66 |
370 | } |
24d9fe69 |
371 | # $create .= ""; |
d28afa66 |
372 | return $create; |
373 | } |
374 | |
0013ee25 |
375 | sub create_table |
376 | { |
377 | my ($table, $options) = @_; |
2620fc1c |
378 | |
fe0f47d0 |
379 | my $qt = $options->{quote_table_names} || ''; |
380 | my $qf = $options->{quote_field_names} || ''; |
381 | |
8d693a85 |
382 | my $table_name = quote_table_name($table->name, $qt); |
0013ee25 |
383 | debug("PKG: Looking at table '$table_name'\n"); |
6d3f6379 |
384 | |
0013ee25 |
385 | # |
386 | # Header. Should this look like what mysqldump produces? |
387 | # |
cd0ea0fd |
388 | my $create = ''; |
fa94b25f |
389 | my $drop; |
8d693a85 |
390 | $create .= "--\n-- Table: $table_name\n--\n" unless $options->{no_comments}; |
391 | $drop = qq[DROP TABLE IF EXISTS $table_name] if $options->{add_drop_table}; |
392 | $create .= "CREATE TABLE $table_name (\n"; |
2b695517 |
393 | |
0013ee25 |
394 | # |
395 | # Fields |
396 | # |
397 | my @field_defs; |
398 | for my $field ( $table->get_fields ) { |
fe0f47d0 |
399 | push @field_defs, create_field($field, $options); |
0013ee25 |
400 | } |
1ded8513 |
401 | |
0013ee25 |
402 | # |
403 | # Indices |
404 | # |
405 | my @index_defs; |
406 | my %indexed_fields; |
407 | for my $index ( $table->get_indices ) { |
fe0f47d0 |
408 | push @index_defs, create_index($index, $options); |
0013ee25 |
409 | $indexed_fields{ $_ } = 1 for $index->fields; |
410 | } |
d529894e |
411 | |
0013ee25 |
412 | # |
413 | # Constraints -- need to handle more than just FK. -ky |
414 | # |
415 | my @constraint_defs; |
416 | my @constraints = $table->get_constraints; |
417 | for my $c ( @constraints ) { |
cd0ea0fd |
418 | my $constr = create_constraint($c, $options); |
419 | push @constraint_defs, $constr if($constr); |
0013ee25 |
420 | |
da5a1bae |
421 | unless ( $indexed_fields{ ($c->fields())[0] } || $c->type ne FOREIGN_KEY ) { |
422 | push @index_defs, "INDEX ($qf" . ($c->fields())[0] . "$qf)"; |
423 | $indexed_fields{ ($c->fields())[0] } = 1; |
424 | } |
0013ee25 |
425 | } |
1ded8513 |
426 | |
0013ee25 |
427 | $create .= join(",\n", map { " $_" } |
428 | @field_defs, @index_defs, @constraint_defs |
429 | ); |
9398955f |
430 | |
0013ee25 |
431 | # |
432 | # Footer |
433 | # |
434 | $create .= "\n)"; |
9a96648f |
435 | $create .= generate_table_options($table, $options) || ''; |
24d9fe69 |
436 | # $create .= ";\n\n"; |
9398955f |
437 | |
fa94b25f |
438 | return $drop ? ($drop,$create) : $create; |
0013ee25 |
439 | } |
f8b6e804 |
440 | |
8d693a85 |
441 | sub quote_table_name { |
442 | my ($table_name, $qt) = @_; |
443 | |
444 | $table_name =~ s/\./$qt.$qt/g; |
445 | |
446 | return "$qt$table_name$qt"; |
447 | } |
448 | |
da5a1bae |
449 | sub generate_table_options |
450 | { |
9a96648f |
451 | my ($table, $options) = @_; |
da5a1bae |
452 | my $create; |
453 | |
454 | my $table_type_defined = 0; |
9a96648f |
455 | my $qf = $options->{quote_field_names} ||= ''; |
7725e1e6 |
456 | my $charset = $table->extra('mysql_charset'); |
457 | my $collate = $table->extra('mysql_collate'); |
9a96648f |
458 | my $union = undef; |
da5a1bae |
459 | for my $t1_option_ref ( $table->options ) { |
460 | my($key, $value) = %{$t1_option_ref}; |
461 | $table_type_defined = 1 |
462 | if uc $key eq 'ENGINE' or uc $key eq 'TYPE'; |
7725e1e6 |
463 | if (uc $key eq 'CHARACTER SET') { |
464 | $charset = $value; |
465 | next; |
466 | } elsif (uc $key eq 'COLLATE') { |
467 | $collate = $value; |
468 | next; |
9a96648f |
469 | } elsif (uc $key eq 'UNION') { |
470 | $union = "($qf". join("$qf, $qf", @$value) ."$qf)"; |
471 | next; |
7725e1e6 |
472 | } |
da5a1bae |
473 | $create .= " $key=$value"; |
474 | } |
9ab59f87 |
475 | |
da5a1bae |
476 | my $mysql_table_type = $table->extra('mysql_table_type'); |
9ab59f87 |
477 | $create .= " ENGINE=$mysql_table_type" |
da5a1bae |
478 | if $mysql_table_type && !$table_type_defined; |
da5a1bae |
479 | my $comments = $table->comments; |
480 | |
481 | $create .= " DEFAULT CHARACTER SET $charset" if $charset; |
482 | $create .= " COLLATE $collate" if $collate; |
9a96648f |
483 | $create .= " UNION=$union" if $union; |
da5a1bae |
484 | $create .= qq[ comment='$comments'] if $comments; |
485 | return $create; |
486 | } |
487 | |
0013ee25 |
488 | sub create_field |
489 | { |
fe0f47d0 |
490 | my ($field, $options) = @_; |
491 | |
492 | my $qf = $options->{quote_field_names} ||= ''; |
9398955f |
493 | |
0013ee25 |
494 | my $field_name = $field->name; |
495 | debug("PKG: Looking at field '$field_name'\n"); |
fe0f47d0 |
496 | my $field_def = "$qf$field_name$qf"; |
0013ee25 |
497 | |
498 | # data type and size |
499 | my $data_type = $field->data_type; |
500 | my @size = $field->size; |
501 | my %extra = $field->extra; |
502 | my $list = $extra{'list'} || []; |
503 | # \todo deal with embedded quotes |
504 | my $commalist = join( ', ', map { qq['$_'] } @$list ); |
505 | my $charset = $extra{'mysql_charset'}; |
506 | my $collate = $extra{'mysql_collate'}; |
507 | |
5d666b31 |
508 | my $mysql_version = $options->{mysql_version} || 0; |
0013ee25 |
509 | # |
510 | # Oracle "number" type -- figure best MySQL type |
511 | # |
512 | if ( lc $data_type eq 'number' ) { |
513 | # not an integer |
514 | if ( scalar @size > 1 ) { |
515 | $data_type = 'double'; |
d529894e |
516 | } |
0013ee25 |
517 | elsif ( $size[0] && $size[0] >= 12 ) { |
518 | $data_type = 'bigint'; |
519 | } |
520 | elsif ( $size[0] && $size[0] <= 1 ) { |
521 | $data_type = 'tinyint'; |
522 | } |
523 | else { |
524 | $data_type = 'int'; |
525 | } |
526 | } |
527 | # |
528 | # Convert a large Oracle varchar to "text" |
5d666b31 |
529 | # (not necessary as of 5.0.3 http://dev.mysql.com/doc/refman/5.0/en/char.html) |
0013ee25 |
530 | # |
531 | elsif ( $data_type =~ /char/i && $size[0] > 255 ) { |
5d666b31 |
532 | unless ($size[0] <= 65535 && $mysql_version >= 5.000003 ) { |
533 | $data_type = 'text'; |
534 | @size = (); |
535 | } |
0013ee25 |
536 | } |
0013ee25 |
537 | elsif ( $data_type =~ /boolean/i ) { |
ca1f9923 |
538 | if ($mysql_version >= 4) { |
539 | $data_type = 'boolean'; |
540 | } else { |
541 | $data_type = 'enum'; |
542 | $commalist = "'0','1'"; |
543 | } |
0013ee25 |
544 | } |
545 | elsif ( exists $translate{ lc $data_type } ) { |
546 | $data_type = $translate{ lc $data_type }; |
547 | } |
548 | |
549 | @size = () if $data_type =~ /(text|blob)/i; |
550 | |
551 | if ( $data_type =~ /(double|float)/ && scalar @size == 1 ) { |
552 | push @size, '0'; |
553 | } |
d529894e |
554 | |
0013ee25 |
555 | $field_def .= " $data_type"; |
556 | |
7c1aae02 |
557 | if ( lc($data_type) eq 'enum' || lc($data_type) eq 'set') { |
0013ee25 |
558 | $field_def .= '(' . $commalist . ')'; |
7c1aae02 |
559 | } |
c857e37a |
560 | elsif ( |
561 | defined $size[0] && $size[0] > 0 |
562 | && |
563 | ! grep lc($data_type) eq $_, @no_length_attr |
564 | ) { |
0013ee25 |
565 | $field_def .= '(' . join( ', ', @size ) . ')'; |
566 | } |
567 | |
568 | # char sets |
569 | $field_def .= " CHARACTER SET $charset" if $charset; |
570 | $field_def .= " COLLATE $collate" if $collate; |
571 | |
572 | # MySQL qualifiers |
573 | for my $qual ( qw[ binary unsigned zerofill ] ) { |
574 | my $val = $extra{ $qual } || $extra{ uc $qual } or next; |
575 | $field_def .= " $qual"; |
576 | } |
577 | for my $qual ( 'character set', 'collate', 'on update' ) { |
578 | my $val = $extra{ $qual } || $extra{ uc $qual } or next; |
579 | $field_def .= " $qual $val"; |
580 | } |
581 | |
582 | # Null? |
583 | $field_def .= ' NOT NULL' unless $field->is_nullable; |
584 | |
06baeb21 |
585 | # Default? |
586 | SQL::Translator::Producer->_apply_default_value( |
587 | $field, |
588 | \$field_def, |
589 | [ |
590 | 'NULL' => \'NULL', |
591 | ], |
592 | ); |
0013ee25 |
593 | |
594 | if ( my $comments = $field->comments ) { |
595 | $field_def .= qq[ comment '$comments']; |
596 | } |
597 | |
598 | # auto_increment? |
599 | $field_def .= " auto_increment" if $field->is_auto_increment; |
600 | |
601 | return $field_def; |
602 | } |
603 | |
da5a1bae |
604 | sub alter_create_index |
605 | { |
606 | my ($index, $options) = @_; |
607 | |
608 | my $qt = $options->{quote_table_names} || ''; |
609 | my $qf = $options->{quote_field_names} || ''; |
610 | |
611 | return join( ' ', |
612 | 'ALTER TABLE', |
613 | $qt.$index->table->name.$qt, |
614 | 'ADD', |
615 | create_index(@_) |
616 | ); |
617 | } |
618 | |
0013ee25 |
619 | sub create_index |
620 | { |
edc4b5da |
621 | my ( $index, $options ) = @_; |
fe0f47d0 |
622 | |
623 | my $qf = $options->{quote_field_names} || ''; |
0013ee25 |
624 | |
edc4b5da |
625 | return join( |
626 | ' ', |
4ec6e692 |
627 | map { $_ || () } |
edc4b5da |
628 | lc $index->type eq 'normal' ? 'INDEX' : $index->type . ' INDEX', |
629 | $index->name |
20476859 |
630 | ? $qf . truncate_id_uniquely( |
edc4b5da |
631 | $index->name, |
632 | $options->{max_id_length} || $DEFAULT_MAX_ID_LENGTH |
20476859 |
633 | ) . $qf |
edc4b5da |
634 | : '', |
635 | '(' . $qf . join( "$qf, $qf", $index->fields ) . $qf . ')' |
636 | ); |
0013ee25 |
637 | } |
638 | |
da5a1bae |
639 | sub alter_drop_index |
640 | { |
641 | my ($index, $options) = @_; |
642 | |
643 | my $qt = $options->{quote_table_names} || ''; |
644 | my $qf = $options->{quote_field_names} || ''; |
645 | |
646 | return join( ' ', |
647 | 'ALTER TABLE', |
648 | $qt.$index->table->name.$qt, |
649 | 'DROP', |
650 | 'INDEX', |
651 | $index->name || $index->fields |
652 | ); |
653 | |
654 | } |
655 | |
656 | sub alter_drop_constraint |
657 | { |
658 | my ($c, $options) = @_; |
659 | |
660 | my $qt = $options->{quote_table_names} || ''; |
7725e1e6 |
661 | my $qc = $options->{quote_field_names} || ''; |
da5a1bae |
662 | |
663 | my $out = sprintf('ALTER TABLE %s DROP %s %s', |
7467c458 |
664 | $qt . $c->table->name . $qt, |
74ca32ce |
665 | $c->type eq FOREIGN_KEY ? $c->type : "INDEX", |
da5a1bae |
666 | $qc . $c->name . $qc ); |
667 | |
668 | return $out; |
669 | } |
670 | |
671 | sub alter_create_constraint |
672 | { |
673 | my ($index, $options) = @_; |
674 | |
675 | my $qt = $options->{quote_table_names} || ''; |
676 | return join( ' ', |
677 | 'ALTER TABLE', |
678 | $qt.$index->table->name.$qt, |
679 | 'ADD', |
680 | create_constraint(@_) ); |
681 | } |
682 | |
0013ee25 |
683 | sub create_constraint |
684 | { |
685 | my ($c, $options) = @_; |
686 | |
fb149f81 |
687 | my $qf = $options->{quote_field_names} || ''; |
688 | my $qt = $options->{quote_table_names} || ''; |
da5a1bae |
689 | my $leave_name = $options->{leave_name} || undef; |
fe0f47d0 |
690 | |
0013ee25 |
691 | my @fields = $c->fields or next; |
692 | |
693 | if ( $c->type eq PRIMARY_KEY ) { |
fe0f47d0 |
694 | return 'PRIMARY KEY (' . $qf . join("$qf, $qf", @fields). $qf . ')'; |
0013ee25 |
695 | } |
696 | elsif ( $c->type eq UNIQUE ) { |
697 | return |
fe0f47d0 |
698 | 'UNIQUE '. |
f5405d47 |
699 | (defined $c->name ? $qf.truncate_id_uniquely( $c->name, $options->{max_id_length} || $DEFAULT_MAX_ID_LENGTH ).$qf.' ' : ''). |
fe0f47d0 |
700 | '(' . $qf . join("$qf, $qf", @fields). $qf . ')'; |
0013ee25 |
701 | } |
702 | elsif ( $c->type eq FOREIGN_KEY ) { |
d529894e |
703 | # |
0013ee25 |
704 | # Make sure FK field is indexed or MySQL complains. |
5e56da9a |
705 | # |
0013ee25 |
706 | |
866d012e |
707 | my $table = $c->table; |
f5405d47 |
708 | my $c_name = truncate_id_uniquely( $c->name, $options->{max_id_length} || $DEFAULT_MAX_ID_LENGTH ); |
866d012e |
709 | |
0013ee25 |
710 | my $def = join(' ', |
fb149f81 |
711 | map { $_ || () } |
712 | 'CONSTRAINT', |
7725e1e6 |
713 | $qf . $c_name . $qf, |
fb149f81 |
714 | 'FOREIGN KEY' |
715 | ); |
0013ee25 |
716 | |
da5a1bae |
717 | |
fe0f47d0 |
718 | $def .= ' ('.$qf . join( "$qf, $qf", @fields ) . $qf . ')'; |
0013ee25 |
719 | |
fe0f47d0 |
720 | $def .= ' REFERENCES ' . $qt . $c->reference_table . $qt; |
0013ee25 |
721 | |
722 | my @rfields = map { $_ || () } $c->reference_fields; |
723 | unless ( @rfields ) { |
724 | my $rtable_name = $c->reference_table; |
866d012e |
725 | if ( my $ref_table = $table->schema->get_table( $rtable_name ) ) { |
0013ee25 |
726 | push @rfields, $ref_table->primary_key; |
1c14e9f1 |
727 | } |
0013ee25 |
728 | else { |
729 | warn "Can't find reference table '$rtable_name' " . |
730 | "in schema\n" if $options->{show_warnings}; |
5e56da9a |
731 | } |
732 | } |
733 | |
0013ee25 |
734 | if ( @rfields ) { |
fe0f47d0 |
735 | $def .= ' (' . $qf . join( "$qf, $qf", @rfields ) . $qf . ')'; |
0013ee25 |
736 | } |
737 | else { |
866d012e |
738 | warn "FK constraint on " . $table->name . '.' . |
0013ee25 |
739 | join('', @fields) . " has no reference fields\n" |
740 | if $options->{show_warnings}; |
741 | } |
5e56da9a |
742 | |
0013ee25 |
743 | if ( $c->match_type ) { |
744 | $def .= ' MATCH ' . |
745 | ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; |
746 | } |
747 | |
748 | if ( $c->on_delete ) { |
749 | $def .= ' ON DELETE '.join( ' ', $c->on_delete ); |
750 | } |
751 | |
752 | if ( $c->on_update ) { |
753 | $def .= ' ON UPDATE '.join( ' ', $c->on_update ); |
754 | } |
cd0ea0fd |
755 | return $def; |
9398955f |
756 | } |
757 | |
cd0ea0fd |
758 | return undef; |
0013ee25 |
759 | } |
760 | |
da5a1bae |
761 | sub alter_table |
762 | { |
763 | my ($to_table, $options) = @_; |
764 | |
7467c458 |
765 | my $qt = $options->{quote_table_names} || ''; |
da5a1bae |
766 | |
9a96648f |
767 | my $table_options = generate_table_options($to_table, $options) || ''; |
da5a1bae |
768 | my $out = sprintf('ALTER TABLE %s%s', |
769 | $qt . $to_table->name . $qt, |
770 | $table_options); |
771 | |
772 | return $out; |
773 | } |
774 | |
4d438549 |
775 | sub rename_field { alter_field(@_) } |
0013ee25 |
776 | sub alter_field |
777 | { |
fe0f47d0 |
778 | my ($from_field, $to_field, $options) = @_; |
779 | |
7467c458 |
780 | my $qf = $options->{quote_field_names} || ''; |
781 | my $qt = $options->{quote_table_names} || ''; |
0013ee25 |
782 | |
783 | my $out = sprintf('ALTER TABLE %s CHANGE COLUMN %s %s', |
fe0f47d0 |
784 | $qt . $to_field->table->name . $qt, |
4d438549 |
785 | $qf . $from_field->name . $qf, |
fe0f47d0 |
786 | create_field($to_field, $options)); |
0013ee25 |
787 | |
788 | return $out; |
789 | } |
790 | |
791 | sub add_field |
792 | { |
fe0f47d0 |
793 | my ($new_field, $options) = @_; |
794 | |
7467c458 |
795 | my $qt = $options->{quote_table_names} || ''; |
0013ee25 |
796 | |
797 | my $out = sprintf('ALTER TABLE %s ADD COLUMN %s', |
fe0f47d0 |
798 | $qt . $new_field->table->name . $qt, |
799 | create_field($new_field, $options)); |
0013ee25 |
800 | |
801 | return $out; |
802 | |
803 | } |
804 | |
805 | sub drop_field |
806 | { |
fe0f47d0 |
807 | my ($old_field, $options) = @_; |
0013ee25 |
808 | |
7467c458 |
809 | my $qf = $options->{quote_field_names} || ''; |
810 | my $qt = $options->{quote_table_names} || ''; |
fe0f47d0 |
811 | |
0013ee25 |
812 | my $out = sprintf('ALTER TABLE %s DROP COLUMN %s', |
fe0f47d0 |
813 | $qt . $old_field->table->name . $qt, |
814 | $qf . $old_field->name . $qf); |
0013ee25 |
815 | |
816 | return $out; |
817 | |
9398955f |
818 | } |
819 | |
4d438549 |
820 | sub batch_alter_table { |
821 | my ($table, $diff_hash, $options) = @_; |
822 | |
f9ed5d54 |
823 | # InnoDB has an issue with dropping and re-adding a FK constraint under the |
824 | # name in a single alter statment, see: http://bugs.mysql.com/bug.php?id=13741 |
825 | # |
826 | # We have to work round this. |
827 | |
828 | my %fks_to_alter; |
829 | my %fks_to_drop = map { |
830 | $_->type eq FOREIGN_KEY |
831 | ? ( $_->name => $_ ) |
832 | : ( ) |
833 | } @{$diff_hash->{alter_drop_constraint} }; |
834 | |
835 | my %fks_to_create = map { |
836 | if ( $_->type eq FOREIGN_KEY) { |
837 | $fks_to_alter{$_->name} = $fks_to_drop{$_->name} if $fks_to_drop{$_->name}; |
838 | ( $_->name => $_ ); |
839 | } else { ( ) } |
840 | } @{$diff_hash->{alter_create_constraint} }; |
841 | |
24d9fe69 |
842 | my @drop_stmt; |
f9ed5d54 |
843 | if (scalar keys %fks_to_alter) { |
844 | $diff_hash->{alter_drop_constraint} = [ |
845 | grep { !$fks_to_alter{$_->name} } @{ $diff_hash->{alter_drop_constraint} } |
846 | ]; |
847 | |
24d9fe69 |
848 | @drop_stmt = batch_alter_table($table, { alter_drop_constraint => [ values %fks_to_alter ] }, $options); |
f9ed5d54 |
849 | |
850 | } |
851 | |
4d438549 |
852 | my @stmts = map { |
853 | if (@{ $diff_hash->{$_} || [] }) { |
854 | my $meth = __PACKAGE__->can($_) or die __PACKAGE__ . " cant $_"; |
f9ed5d54 |
855 | map { $meth->( (ref $_ eq 'ARRAY' ? @$_ : $_), $options ) } @{ $diff_hash->{$_} } |
4d438549 |
856 | } else { () } |
46bf5655 |
857 | } qw/rename_table |
858 | alter_drop_constraint |
4d438549 |
859 | alter_drop_index |
860 | drop_field |
861 | add_field |
862 | alter_field |
863 | rename_field |
864 | alter_create_index |
865 | alter_create_constraint |
866 | alter_table/; |
867 | |
46bf5655 |
868 | # rename_table makes things a bit more complex |
869 | my $renamed_from = ""; |
870 | $renamed_from = $diff_hash->{rename_table}[0][0]->name |
871 | if $diff_hash->{rename_table} && @{$diff_hash->{rename_table}}; |
872 | |
4d438549 |
873 | return unless @stmts; |
874 | # Just zero or one stmts. return now |
24d9fe69 |
875 | return (@drop_stmt,@stmts) unless @stmts > 1; |
4d438549 |
876 | |
877 | # Now strip off the 'ALTER TABLE xyz' of all but the first one |
878 | |
7467c458 |
879 | my $qt = $options->{quote_table_names} || ''; |
4104f82b |
880 | my $table_name = $qt . $table->name . $qt; |
881 | |
882 | |
883 | my $re = $renamed_from |
884 | ? qr/^ALTER TABLE (?:\Q$table_name\E|\Q$qt$renamed_from$qt\E) / |
885 | : qr/^ALTER TABLE \Q$table_name\E /; |
4d438549 |
886 | |
887 | my $first = shift @stmts; |
4104f82b |
888 | my ($alter_table) = $first =~ /($re)/; |
46bf5655 |
889 | |
4d438549 |
890 | my $padd = " " x length($alter_table); |
891 | |
24d9fe69 |
892 | return @drop_stmt, join( ",\n", $first, map { s/$re//; $padd . $_ } @stmts); |
4104f82b |
893 | |
4d438549 |
894 | } |
895 | |
896 | sub drop_table { |
46bf5655 |
897 | my ($table, $options) = @_; |
898 | |
899 | my $qt = $options->{quote_table_names} || ''; |
4d438549 |
900 | |
901 | # Drop (foreign key) constraints so table drops cleanly |
46bf5655 |
902 | my @sql = batch_alter_table($table, { alter_drop_constraint => [ grep { $_->type eq 'FOREIGN KEY' } $table->get_constraints ] }, $options); |
903 | |
24d9fe69 |
904 | return (@sql, "DROP TABLE $qt$table$qt"); |
905 | # return join("\n", @sql, "DROP TABLE $qt$table$qt"); |
46bf5655 |
906 | |
907 | } |
908 | |
909 | sub rename_table { |
910 | my ($old_table, $new_table, $options) = @_; |
4d438549 |
911 | |
46bf5655 |
912 | my $qt = $options->{quote_table_names} || ''; |
4d438549 |
913 | |
46bf5655 |
914 | return "ALTER TABLE $qt$old_table$qt RENAME TO $qt$new_table$qt"; |
4d438549 |
915 | } |
916 | |
da5a1bae |
917 | sub next_unused_name { |
918 | my $name = shift || ''; |
919 | if ( !defined($used_names{$name}) ) { |
920 | $used_names{$name} = $name; |
921 | return $name; |
922 | } |
923 | |
924 | my $i = 1; |
925 | while ( defined($used_names{$name . '_' . $i}) ) { |
926 | ++$i; |
927 | } |
928 | $name .= '_' . $i; |
929 | $used_names{$name} = $name; |
930 | return $name; |
931 | } |
932 | |
9398955f |
933 | 1; |
9398955f |
934 | |
c855a748 |
935 | # ------------------------------------------------------------------- |
9398955f |
936 | |
c855a748 |
937 | =pod |
938 | |
939 | =head1 SEE ALSO |
940 | |
941 | SQL::Translator, http://www.mysql.com/. |
9398955f |
942 | |
2d6979da |
943 | =head1 AUTHORS |
9398955f |
944 | |
758ab1cd |
945 | darren chamberlain E<lt>darren@cpan.orgE<gt>, |
f997b9ab |
946 | Ken Youens-Clark E<lt>kclark@cpan.orgE<gt>. |
c855a748 |
947 | |
948 | =cut |