Commit | Line | Data |
9398955f |
1 | package SQL::Translator::Producer::MySQL; |
2 | |
49e1eb70 |
3 | # ------------------------------------------------------------------- |
866d012e |
4 | # $Id: MySQL.pm,v 1.54 2007-11-10 03:36:43 mwz444 Exp $ |
49e1eb70 |
5 | # ------------------------------------------------------------------- |
977651a5 |
6 | # Copyright (C) 2002-4 SQLFairy Authors |
9398955f |
7 | # |
8 | # This program is free software; you can redistribute it and/or |
9 | # modify it under the terms of the GNU General Public License as |
10 | # published by the Free Software Foundation; version 2. |
11 | # |
12 | # This program is distributed in the hope that it will be useful, but |
13 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
15 | # General Public License for more details. |
16 | # |
17 | # You should have received a copy of the GNU General Public License |
18 | # along with this program; if not, write to the Free Software |
19 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
20 | # 02111-1307 USA |
21 | # ------------------------------------------------------------------- |
22 | |
c855a748 |
23 | =head1 NAME |
24 | |
25 | SQL::Translator::Producer::MySQL - MySQL-specific producer for SQL::Translator |
26 | |
27 | =head1 SYNOPSIS |
28 | |
29 | Use via SQL::Translator: |
30 | |
31 | use SQL::Translator; |
32 | |
33 | my $t = SQL::Translator->new( parser => '...', producer => 'MySQL', '...' ); |
34 | $t->translate; |
35 | |
36 | =head1 DESCRIPTION |
37 | |
38 | This module will produce text output of the schema suitable for MySQL. |
39 | There are still some issues to be worked out with syntax differences |
40 | between MySQL versions 3 and 4 ("SET foreign_key_checks," character sets |
41 | for fields, etc.). |
42 | |
5d666b31 |
43 | =head1 ARGUMENTS |
44 | |
45 | This producer takes a single optional producer_arg C<mysql_version>, which |
46 | provides the desired version for the target database. By default MySQL v3 is |
47 | assumed, and statements pertaining to any features introduced in later versions |
48 | (e.g. CREATE VIEW) are not produced. |
49 | |
50 | Valid version specifiers for C<mysql_parser_version> are listed L<here|SQL::Translator::Utils/parse_mysql_version> |
51 | |
5a0c7b43 |
52 | =head2 Table Types |
53 | |
54 | Normally the tables will be created without any explicit table type given and |
55 | so will use the MySQL default. |
56 | |
57 | Any tables involved in foreign key constraints automatically get a table type |
58 | of InnoDB, unless this is overridden by setting the C<mysql_table_type> extra |
59 | attribute explicitly on the table. |
60 | |
61 | =head2 Extra attributes. |
62 | |
63 | The producer recognises the following extra attributes on the Schema objects. |
64 | |
65 | =over 4 |
66 | |
7467c458 |
67 | =item B<field.list> |
5a0c7b43 |
68 | |
69 | Set the list of allowed values for Enum fields. |
70 | |
7467c458 |
71 | =item B<field.binary>, B<field.unsigned>, B<field.zerofill> |
5a0c7b43 |
72 | |
73 | Set the MySQL field options of the same name. |
74 | |
7467c458 |
75 | =item B<field.renamed_from>, B<table.renamed_from> |
4d438549 |
76 | |
7467c458 |
77 | Use when producing diffs to indicate that the current table/field has been |
78 | renamed from the old name as given in the attribute value. |
4d438549 |
79 | |
7467c458 |
80 | =item B<table.mysql_table_type> |
5a0c7b43 |
81 | |
82 | Set the type of the table e.g. 'InnoDB', 'MyISAM'. This will be |
83 | automatically set for tables involved in foreign key constraints if it is |
84 | not already set explicitly. See L<"Table Types">. |
85 | |
7467c458 |
86 | Please note that the C<ENGINE> option is the prefered method of specifying |
87 | the MySQL storage engine to use, but this method still works for backwards |
88 | compatability. |
89 | |
90 | =item B<table.mysql_charset>, B<table.mysql_collate> |
1ded8513 |
91 | |
92 | Set the tables default charater set and collation order. |
93 | |
7467c458 |
94 | =item B<field.mysql_charset>, B<field.mysql_collate> |
1ded8513 |
95 | |
96 | Set the fields charater set and collation order. |
97 | |
5a0c7b43 |
98 | =back |
99 | |
c855a748 |
100 | =cut |
101 | |
9398955f |
102 | use strict; |
cd0ea0fd |
103 | use warnings; |
da5a1bae |
104 | use vars qw[ $VERSION $DEBUG %used_names ]; |
866d012e |
105 | $VERSION = sprintf "%d.%02d", q$Revision: 1.54 $ =~ /(\d+)\.(\d+)/; |
5636ed00 |
106 | $DEBUG = 0 unless defined $DEBUG; |
9398955f |
107 | |
f5405d47 |
108 | # Maximum length for most identifiers is 64, according to: |
109 | # http://dev.mysql.com/doc/refman/4.1/en/identifiers.html |
110 | # http://dev.mysql.com/doc/refman/5.0/en/identifiers.html |
111 | my $DEFAULT_MAX_ID_LENGTH = 64; |
112 | |
9398955f |
113 | use Data::Dumper; |
1c14e9f1 |
114 | use SQL::Translator::Schema::Constants; |
5d666b31 |
115 | use SQL::Translator::Utils qw(debug header_comment truncate_id_uniquely parse_mysql_version); |
9398955f |
116 | |
d2344c83 |
117 | # |
118 | # Use only lowercase for the keys (e.g. "long" and not "LONG") |
119 | # |
2620fc1c |
120 | my %translate = ( |
121 | # |
122 | # Oracle types |
123 | # |
124 | varchar2 => 'varchar', |
125 | long => 'text', |
d2344c83 |
126 | clob => 'longtext', |
2620fc1c |
127 | |
128 | # |
129 | # Sybase types |
130 | # |
131 | int => 'integer', |
132 | money => 'float', |
133 | real => 'double', |
134 | comment => 'text', |
135 | bit => 'tinyint', |
87779799 |
136 | |
137 | # |
138 | # Access types |
139 | # |
140 | 'long integer' => 'integer', |
141 | 'text' => 'text', |
142 | 'datetime' => 'datetime', |
2620fc1c |
143 | ); |
144 | |
9ab59f87 |
145 | |
146 | sub preprocess_schema { |
934e1b39 |
147 | my ($schema) = @_; |
9ab59f87 |
148 | |
149 | # extra->{mysql_table_type} used to be the type. It belongs in options, so |
150 | # move it if we find it. Return Engine type if found in extra or options |
7725e1e6 |
151 | # Similarly for mysql_charset and mysql_collate |
152 | my $extra_to_options = sub { |
153 | my ($table, $extra_name, $opt_name) = @_; |
9ab59f87 |
154 | |
155 | my $extra = $table->extra; |
156 | |
7725e1e6 |
157 | my $extra_type = delete $extra->{$extra_name}; |
9ab59f87 |
158 | |
159 | # Now just to find if there is already an Engine or Type option... |
160 | # and lets normalize it to ENGINE since: |
161 | # |
162 | # The ENGINE table option specifies the storage engine for the table. |
163 | # TYPE is a synonym, but ENGINE is the preferred option name. |
164 | # |
165 | |
166 | # We have to use the hash directly here since otherwise there is no way |
167 | # to remove options. |
168 | my $options = ( $table->{options} ||= []); |
169 | |
7725e1e6 |
170 | # If multiple option names, normalize to the first one |
171 | if (ref $opt_name) { |
172 | OPT_NAME: for ( @$opt_name[1..$#$opt_name] ) { |
173 | for my $idx ( 0..$#{$options} ) { |
174 | my ($key, $value) = %{ $options->[$idx] }; |
175 | |
176 | if (uc $key eq $_) { |
177 | $options->[$idx] = { $opt_name->[0] => $value }; |
178 | last OPT_NAME; |
179 | } |
180 | } |
181 | } |
182 | $opt_name = $opt_name->[0]; |
183 | |
184 | } |
185 | |
186 | |
9ab59f87 |
187 | # This assumes that there isn't both a Type and an Engine option. |
7725e1e6 |
188 | OPTION: |
9ab59f87 |
189 | for my $idx ( 0..$#{$options} ) { |
190 | my ($key, $value) = %{ $options->[$idx] }; |
191 | |
7725e1e6 |
192 | next unless uc $key eq $opt_name; |
193 | |
194 | # make sure case is right on option name |
9ab59f87 |
195 | delete $options->[$idx]{$key}; |
7725e1e6 |
196 | return $options->[$idx]{$opt_name} = $value || $extra_type; |
9ab59f87 |
197 | |
198 | } |
199 | |
200 | if ($extra_type) { |
7725e1e6 |
201 | push @$options, { $opt_name => $extra_type }; |
9ab59f87 |
202 | return $extra_type; |
203 | } |
204 | |
205 | }; |
206 | |
1c680eb9 |
207 | # Names are only specific to a given schema |
208 | local %used_names = (); |
209 | |
9ab59f87 |
210 | # |
211 | # Work out which tables need to be InnoDB to support foreign key |
212 | # constraints. We do this first as we need InnoDB at both ends. |
213 | # |
214 | foreach my $table ( $schema->get_tables ) { |
7725e1e6 |
215 | |
216 | $extra_to_options->($table, 'mysql_table_type', ['ENGINE', 'TYPE'] ); |
217 | $extra_to_options->($table, 'mysql_charset', 'CHARACTER SET' ); |
218 | $extra_to_options->($table, 'mysql_collate', 'COLLATE' ); |
9ab59f87 |
219 | |
929ef265 |
220 | foreach my $c ( $table->get_constraints ) { |
1c680eb9 |
221 | next unless $c->type eq FOREIGN_KEY; |
222 | |
223 | # Normalize constraint names here. |
224 | my $c_name = $c->name; |
225 | # Give the constraint a name if it doesn't have one, so it doens't feel |
226 | # left out |
227 | $c_name = $table->name . '_fk' unless length $c_name; |
228 | |
229 | $c->name( next_unused_name($c_name) ); |
230 | |
9ab59f87 |
231 | for my $meth (qw/table reference_table/) { |
1c680eb9 |
232 | my $table = $schema->get_table($c->$meth) || next; |
7725e1e6 |
233 | # This normalizes the types to ENGINE and returns the value if its there |
234 | next if $extra_to_options->($table, 'mysql_table_type', ['ENGINE', 'TYPE']); |
9ab59f87 |
235 | $table->options( { 'ENGINE' => 'InnoDB' } ); |
236 | } |
929ef265 |
237 | } # foreach constraints |
238 | |
2c6be67a |
239 | my %map = ( mysql_collate => 'collate', mysql_charset => 'character set'); |
929ef265 |
240 | foreach my $f ( $table->get_fields ) { |
2c6be67a |
241 | my $extra = $f->extra; |
242 | for (keys %map) { |
243 | $extra->{$map{$_}} = delete $extra->{$_} if exists $extra->{$_}; |
244 | } |
245 | |
929ef265 |
246 | my @size = $f->size; |
247 | if ( !$size[0] && $f->data_type =~ /char$/ ) { |
248 | $f->size( (255) ); |
249 | } |
9ab59f87 |
250 | } |
929ef265 |
251 | |
9ab59f87 |
252 | } |
253 | } |
254 | |
9398955f |
255 | sub produce { |
a1d94525 |
256 | my $translator = shift; |
257 | local $DEBUG = $translator->debug; |
da5a1bae |
258 | local %used_names; |
a1d94525 |
259 | my $no_comments = $translator->no_comments; |
260 | my $add_drop_table = $translator->add_drop_table; |
261 | my $schema = $translator->schema; |
2bc23e82 |
262 | my $show_warnings = $translator->show_warnings || 0; |
ca1f9923 |
263 | my $producer_args = $translator->producer_args; |
5d666b31 |
264 | my $mysql_version = parse_mysql_version ($producer_args->{mysql_version}, 'perl') || 0; |
f5405d47 |
265 | my $max_id_length = $producer_args->{mysql_max_id_length} || $DEFAULT_MAX_ID_LENGTH; |
d529894e |
266 | |
7725e1e6 |
267 | my ($qt, $qf, $qc) = ('','', ''); |
fe0f47d0 |
268 | $qt = '`' if $translator->quote_table_names; |
269 | $qf = '`' if $translator->quote_field_names; |
270 | |
1a24938d |
271 | debug("PKG: Beginning production\n"); |
da5a1bae |
272 | %used_names = (); |
24d9fe69 |
273 | my $create = ''; |
5ee19df8 |
274 | $create .= header_comment unless ($no_comments); |
0823773d |
275 | # \todo Don't set if MySQL 3.x is set on command line |
24d9fe69 |
276 | my @create = "SET foreign_key_checks=0"; |
9398955f |
277 | |
934e1b39 |
278 | preprocess_schema($schema); |
5a0c7b43 |
279 | |
280 | # |
281 | # Generate sql |
282 | # |
cd0ea0fd |
283 | my @table_defs =(); |
4d438549 |
284 | |
1c14e9f1 |
285 | for my $table ( $schema->get_tables ) { |
cd0ea0fd |
286 | # print $table->name, "\n"; |
0013ee25 |
287 | push @table_defs, create_table($table, |
fe0f47d0 |
288 | { add_drop_table => $add_drop_table, |
289 | show_warnings => $show_warnings, |
290 | no_comments => $no_comments, |
291 | quote_table_names => $qt, |
ca1f9923 |
292 | quote_field_names => $qf, |
f5405d47 |
293 | max_id_length => $max_id_length, |
ca1f9923 |
294 | mysql_version => $mysql_version |
0013ee25 |
295 | }); |
296 | } |
9398955f |
297 | |
e30b71b8 |
298 | if ($mysql_version >= 5.000001) { |
83ddfeac |
299 | for my $view ( $schema->get_views ) { |
d28afa66 |
300 | push @table_defs, create_view($view, |
301 | { add_replace_view => $add_drop_table, |
302 | show_warnings => $show_warnings, |
303 | no_comments => $no_comments, |
304 | quote_table_names => $qt, |
305 | quote_field_names => $qf, |
306 | max_id_length => $max_id_length, |
307 | mysql_version => $mysql_version |
308 | }); |
83ddfeac |
309 | } |
d28afa66 |
310 | } |
311 | |
312 | |
cd0ea0fd |
313 | # print "@table_defs\n"; |
24d9fe69 |
314 | push @table_defs, "SET foreign_key_checks=1"; |
cd0ea0fd |
315 | |
24d9fe69 |
316 | return wantarray ? ($create ? $create : (), @create, @table_defs) : ($create . join('', map { $_ ? "$_;\n\n" : () } (@create, @table_defs))); |
0013ee25 |
317 | } |
9398955f |
318 | |
d28afa66 |
319 | sub create_view { |
320 | my ($view, $options) = @_; |
321 | my $qt = $options->{quote_table_names} || ''; |
322 | my $qf = $options->{quote_field_names} || ''; |
323 | |
324 | my $view_name = $view->name; |
325 | debug("PKG: Looking at view '${view_name}'\n"); |
326 | |
327 | # Header. Should this look like what mysqldump produces? |
328 | my $create = ''; |
329 | $create .= "--\n-- View: ${qt}${view_name}${qt}\n--\n" unless $options->{no_comments}; |
330 | $create .= 'CREATE'; |
331 | $create .= ' OR REPLACE' if $options->{add_replace_view}; |
332 | $create .= "\n"; |
333 | |
334 | my $extra = $view->extra; |
335 | # ALGORITHM |
336 | if( exists($extra->{mysql_algorithm}) && defined(my $algorithm = $extra->{mysql_algorithm}) ){ |
337 | $create .= " ALGORITHM = ${algorithm}\n" if $algorithm =~ /(?:UNDEFINED|MERGE|TEMPTABLE)/i; |
338 | } |
339 | # DEFINER |
340 | if( exists($extra->{mysql_definer}) && defined(my $user = $extra->{mysql_definer}) ){ |
341 | $create .= " DEFINER = ${user}\n"; |
342 | } |
343 | # SECURITY |
344 | if( exists($extra->{mysql_security}) && defined(my $security = $extra->{mysql_security}) ){ |
345 | $create .= " SQL SECURITY ${security}\n" if $security =~ /(?:DEFINER|INVOKER)/i; |
346 | } |
347 | |
348 | #Header, cont. |
349 | $create .= " VIEW ${qt}${view_name}${qt}"; |
350 | |
351 | if( my @fields = $view->fields ){ |
352 | my $list = join ', ', map { "${qf}${_}${qf}"} @fields; |
353 | $create .= " ( ${list} )"; |
354 | } |
355 | if( my $sql = $view->sql ){ |
356 | $create .= " AS (\n ${sql}\n )"; |
357 | } |
24d9fe69 |
358 | # $create .= ""; |
d28afa66 |
359 | return $create; |
360 | } |
361 | |
0013ee25 |
362 | sub create_table |
363 | { |
364 | my ($table, $options) = @_; |
2620fc1c |
365 | |
fe0f47d0 |
366 | my $qt = $options->{quote_table_names} || ''; |
367 | my $qf = $options->{quote_field_names} || ''; |
368 | |
0013ee25 |
369 | my $table_name = $table->name; |
370 | debug("PKG: Looking at table '$table_name'\n"); |
6d3f6379 |
371 | |
0013ee25 |
372 | # |
373 | # Header. Should this look like what mysqldump produces? |
374 | # |
cd0ea0fd |
375 | my $create = ''; |
fa94b25f |
376 | my $drop; |
fe0f47d0 |
377 | $create .= "--\n-- Table: $qt$table_name$qt\n--\n" unless $options->{no_comments}; |
24d9fe69 |
378 | $drop = qq[DROP TABLE IF EXISTS $qt$table_name$qt] if $options->{add_drop_table}; |
fe0f47d0 |
379 | $create .= "CREATE TABLE $qt$table_name$qt (\n"; |
2b695517 |
380 | |
0013ee25 |
381 | # |
382 | # Fields |
383 | # |
384 | my @field_defs; |
385 | for my $field ( $table->get_fields ) { |
fe0f47d0 |
386 | push @field_defs, create_field($field, $options); |
0013ee25 |
387 | } |
1ded8513 |
388 | |
0013ee25 |
389 | # |
390 | # Indices |
391 | # |
392 | my @index_defs; |
393 | my %indexed_fields; |
394 | for my $index ( $table->get_indices ) { |
fe0f47d0 |
395 | push @index_defs, create_index($index, $options); |
0013ee25 |
396 | $indexed_fields{ $_ } = 1 for $index->fields; |
397 | } |
d529894e |
398 | |
0013ee25 |
399 | # |
400 | # Constraints -- need to handle more than just FK. -ky |
401 | # |
402 | my @constraint_defs; |
403 | my @constraints = $table->get_constraints; |
404 | for my $c ( @constraints ) { |
cd0ea0fd |
405 | my $constr = create_constraint($c, $options); |
406 | push @constraint_defs, $constr if($constr); |
0013ee25 |
407 | |
da5a1bae |
408 | unless ( $indexed_fields{ ($c->fields())[0] } || $c->type ne FOREIGN_KEY ) { |
409 | push @index_defs, "INDEX ($qf" . ($c->fields())[0] . "$qf)"; |
410 | $indexed_fields{ ($c->fields())[0] } = 1; |
411 | } |
0013ee25 |
412 | } |
1ded8513 |
413 | |
0013ee25 |
414 | $create .= join(",\n", map { " $_" } |
415 | @field_defs, @index_defs, @constraint_defs |
416 | ); |
9398955f |
417 | |
0013ee25 |
418 | # |
419 | # Footer |
420 | # |
421 | $create .= "\n)"; |
9a96648f |
422 | $create .= generate_table_options($table, $options) || ''; |
24d9fe69 |
423 | # $create .= ";\n\n"; |
9398955f |
424 | |
fa94b25f |
425 | return $drop ? ($drop,$create) : $create; |
0013ee25 |
426 | } |
f8b6e804 |
427 | |
da5a1bae |
428 | sub generate_table_options |
429 | { |
9a96648f |
430 | my ($table, $options) = @_; |
da5a1bae |
431 | my $create; |
432 | |
433 | my $table_type_defined = 0; |
9a96648f |
434 | my $qf = $options->{quote_field_names} ||= ''; |
7725e1e6 |
435 | my $charset = $table->extra('mysql_charset'); |
436 | my $collate = $table->extra('mysql_collate'); |
9a96648f |
437 | my $union = undef; |
da5a1bae |
438 | for my $t1_option_ref ( $table->options ) { |
439 | my($key, $value) = %{$t1_option_ref}; |
440 | $table_type_defined = 1 |
441 | if uc $key eq 'ENGINE' or uc $key eq 'TYPE'; |
7725e1e6 |
442 | if (uc $key eq 'CHARACTER SET') { |
443 | $charset = $value; |
444 | next; |
445 | } elsif (uc $key eq 'COLLATE') { |
446 | $collate = $value; |
447 | next; |
9a96648f |
448 | } elsif (uc $key eq 'UNION') { |
449 | $union = "($qf". join("$qf, $qf", @$value) ."$qf)"; |
450 | next; |
7725e1e6 |
451 | } |
da5a1bae |
452 | $create .= " $key=$value"; |
453 | } |
9ab59f87 |
454 | |
da5a1bae |
455 | my $mysql_table_type = $table->extra('mysql_table_type'); |
9ab59f87 |
456 | $create .= " ENGINE=$mysql_table_type" |
da5a1bae |
457 | if $mysql_table_type && !$table_type_defined; |
da5a1bae |
458 | my $comments = $table->comments; |
459 | |
460 | $create .= " DEFAULT CHARACTER SET $charset" if $charset; |
461 | $create .= " COLLATE $collate" if $collate; |
9a96648f |
462 | $create .= " UNION=$union" if $union; |
da5a1bae |
463 | $create .= qq[ comment='$comments'] if $comments; |
464 | return $create; |
465 | } |
466 | |
0013ee25 |
467 | sub create_field |
468 | { |
fe0f47d0 |
469 | my ($field, $options) = @_; |
470 | |
471 | my $qf = $options->{quote_field_names} ||= ''; |
9398955f |
472 | |
0013ee25 |
473 | my $field_name = $field->name; |
474 | debug("PKG: Looking at field '$field_name'\n"); |
fe0f47d0 |
475 | my $field_def = "$qf$field_name$qf"; |
0013ee25 |
476 | |
477 | # data type and size |
478 | my $data_type = $field->data_type; |
479 | my @size = $field->size; |
480 | my %extra = $field->extra; |
481 | my $list = $extra{'list'} || []; |
482 | # \todo deal with embedded quotes |
483 | my $commalist = join( ', ', map { qq['$_'] } @$list ); |
484 | my $charset = $extra{'mysql_charset'}; |
485 | my $collate = $extra{'mysql_collate'}; |
486 | |
5d666b31 |
487 | my $mysql_version = $options->{mysql_version} || 0; |
0013ee25 |
488 | # |
489 | # Oracle "number" type -- figure best MySQL type |
490 | # |
491 | if ( lc $data_type eq 'number' ) { |
492 | # not an integer |
493 | if ( scalar @size > 1 ) { |
494 | $data_type = 'double'; |
d529894e |
495 | } |
0013ee25 |
496 | elsif ( $size[0] && $size[0] >= 12 ) { |
497 | $data_type = 'bigint'; |
498 | } |
499 | elsif ( $size[0] && $size[0] <= 1 ) { |
500 | $data_type = 'tinyint'; |
501 | } |
502 | else { |
503 | $data_type = 'int'; |
504 | } |
505 | } |
506 | # |
507 | # Convert a large Oracle varchar to "text" |
5d666b31 |
508 | # (not necessary as of 5.0.3 http://dev.mysql.com/doc/refman/5.0/en/char.html) |
0013ee25 |
509 | # |
510 | elsif ( $data_type =~ /char/i && $size[0] > 255 ) { |
5d666b31 |
511 | unless ($size[0] <= 65535 && $mysql_version >= 5.000003 ) { |
512 | $data_type = 'text'; |
513 | @size = (); |
514 | } |
0013ee25 |
515 | } |
0013ee25 |
516 | elsif ( $data_type =~ /boolean/i ) { |
ca1f9923 |
517 | if ($mysql_version >= 4) { |
518 | $data_type = 'boolean'; |
519 | } else { |
520 | $data_type = 'enum'; |
521 | $commalist = "'0','1'"; |
522 | } |
0013ee25 |
523 | } |
524 | elsif ( exists $translate{ lc $data_type } ) { |
525 | $data_type = $translate{ lc $data_type }; |
526 | } |
527 | |
528 | @size = () if $data_type =~ /(text|blob)/i; |
529 | |
530 | if ( $data_type =~ /(double|float)/ && scalar @size == 1 ) { |
531 | push @size, '0'; |
532 | } |
d529894e |
533 | |
0013ee25 |
534 | $field_def .= " $data_type"; |
535 | |
7c1aae02 |
536 | if ( lc($data_type) eq 'enum' || lc($data_type) eq 'set') { |
0013ee25 |
537 | $field_def .= '(' . $commalist . ')'; |
7c1aae02 |
538 | } |
0013ee25 |
539 | elsif ( defined $size[0] && $size[0] > 0 ) { |
540 | $field_def .= '(' . join( ', ', @size ) . ')'; |
541 | } |
542 | |
543 | # char sets |
544 | $field_def .= " CHARACTER SET $charset" if $charset; |
545 | $field_def .= " COLLATE $collate" if $collate; |
546 | |
547 | # MySQL qualifiers |
548 | for my $qual ( qw[ binary unsigned zerofill ] ) { |
549 | my $val = $extra{ $qual } || $extra{ uc $qual } or next; |
550 | $field_def .= " $qual"; |
551 | } |
552 | for my $qual ( 'character set', 'collate', 'on update' ) { |
553 | my $val = $extra{ $qual } || $extra{ uc $qual } or next; |
554 | $field_def .= " $qual $val"; |
555 | } |
556 | |
557 | # Null? |
558 | $field_def .= ' NOT NULL' unless $field->is_nullable; |
559 | |
560 | # Default? XXX Need better quoting! |
561 | my $default = $field->default_value; |
562 | if ( defined $default ) { |
bc8e2aa1 |
563 | SQL::Translator::Producer->_apply_default_value( |
564 | \$field_def, |
565 | $default, |
566 | [ |
567 | 'NULL' => \'NULL', |
568 | ], |
569 | ); |
0013ee25 |
570 | } |
571 | |
572 | if ( my $comments = $field->comments ) { |
573 | $field_def .= qq[ comment '$comments']; |
574 | } |
575 | |
576 | # auto_increment? |
577 | $field_def .= " auto_increment" if $field->is_auto_increment; |
578 | |
579 | return $field_def; |
580 | } |
581 | |
da5a1bae |
582 | sub alter_create_index |
583 | { |
584 | my ($index, $options) = @_; |
585 | |
586 | my $qt = $options->{quote_table_names} || ''; |
587 | my $qf = $options->{quote_field_names} || ''; |
588 | |
589 | return join( ' ', |
590 | 'ALTER TABLE', |
591 | $qt.$index->table->name.$qt, |
592 | 'ADD', |
593 | create_index(@_) |
594 | ); |
595 | } |
596 | |
0013ee25 |
597 | sub create_index |
598 | { |
fe0f47d0 |
599 | my ($index, $options) = @_; |
600 | |
601 | my $qf = $options->{quote_field_names} || ''; |
0013ee25 |
602 | |
603 | return join( ' ', |
da5a1bae |
604 | lc $index->type eq 'normal' ? 'INDEX' : $index->type . ' INDEX', |
f5405d47 |
605 | truncate_id_uniquely( $index->name, $options->{max_id_length} || $DEFAULT_MAX_ID_LENGTH ), |
fe0f47d0 |
606 | '(' . $qf . join( "$qf, $qf", $index->fields ) . $qf . ')' |
0013ee25 |
607 | ); |
608 | |
609 | } |
610 | |
da5a1bae |
611 | sub alter_drop_index |
612 | { |
613 | my ($index, $options) = @_; |
614 | |
615 | my $qt = $options->{quote_table_names} || ''; |
616 | my $qf = $options->{quote_field_names} || ''; |
617 | |
618 | return join( ' ', |
619 | 'ALTER TABLE', |
620 | $qt.$index->table->name.$qt, |
621 | 'DROP', |
622 | 'INDEX', |
623 | $index->name || $index->fields |
624 | ); |
625 | |
626 | } |
627 | |
628 | sub alter_drop_constraint |
629 | { |
630 | my ($c, $options) = @_; |
631 | |
632 | my $qt = $options->{quote_table_names} || ''; |
7725e1e6 |
633 | my $qc = $options->{quote_field_names} || ''; |
da5a1bae |
634 | |
635 | my $out = sprintf('ALTER TABLE %s DROP %s %s', |
7467c458 |
636 | $qt . $c->table->name . $qt, |
74ca32ce |
637 | $c->type eq FOREIGN_KEY ? $c->type : "INDEX", |
da5a1bae |
638 | $qc . $c->name . $qc ); |
639 | |
640 | return $out; |
641 | } |
642 | |
643 | sub alter_create_constraint |
644 | { |
645 | my ($index, $options) = @_; |
646 | |
647 | my $qt = $options->{quote_table_names} || ''; |
648 | return join( ' ', |
649 | 'ALTER TABLE', |
650 | $qt.$index->table->name.$qt, |
651 | 'ADD', |
652 | create_constraint(@_) ); |
653 | } |
654 | |
0013ee25 |
655 | sub create_constraint |
656 | { |
657 | my ($c, $options) = @_; |
658 | |
fb149f81 |
659 | my $qf = $options->{quote_field_names} || ''; |
660 | my $qt = $options->{quote_table_names} || ''; |
da5a1bae |
661 | my $leave_name = $options->{leave_name} || undef; |
fe0f47d0 |
662 | |
0013ee25 |
663 | my @fields = $c->fields or next; |
664 | |
665 | if ( $c->type eq PRIMARY_KEY ) { |
fe0f47d0 |
666 | return 'PRIMARY KEY (' . $qf . join("$qf, $qf", @fields). $qf . ')'; |
0013ee25 |
667 | } |
668 | elsif ( $c->type eq UNIQUE ) { |
669 | return |
fe0f47d0 |
670 | 'UNIQUE '. |
f5405d47 |
671 | (defined $c->name ? $qf.truncate_id_uniquely( $c->name, $options->{max_id_length} || $DEFAULT_MAX_ID_LENGTH ).$qf.' ' : ''). |
fe0f47d0 |
672 | '(' . $qf . join("$qf, $qf", @fields). $qf . ')'; |
0013ee25 |
673 | } |
674 | elsif ( $c->type eq FOREIGN_KEY ) { |
d529894e |
675 | # |
0013ee25 |
676 | # Make sure FK field is indexed or MySQL complains. |
5e56da9a |
677 | # |
0013ee25 |
678 | |
866d012e |
679 | my $table = $c->table; |
f5405d47 |
680 | my $c_name = truncate_id_uniquely( $c->name, $options->{max_id_length} || $DEFAULT_MAX_ID_LENGTH ); |
866d012e |
681 | |
0013ee25 |
682 | my $def = join(' ', |
fb149f81 |
683 | map { $_ || () } |
684 | 'CONSTRAINT', |
7725e1e6 |
685 | $qf . $c_name . $qf, |
fb149f81 |
686 | 'FOREIGN KEY' |
687 | ); |
0013ee25 |
688 | |
da5a1bae |
689 | |
fe0f47d0 |
690 | $def .= ' ('.$qf . join( "$qf, $qf", @fields ) . $qf . ')'; |
0013ee25 |
691 | |
fe0f47d0 |
692 | $def .= ' REFERENCES ' . $qt . $c->reference_table . $qt; |
0013ee25 |
693 | |
694 | my @rfields = map { $_ || () } $c->reference_fields; |
695 | unless ( @rfields ) { |
696 | my $rtable_name = $c->reference_table; |
866d012e |
697 | if ( my $ref_table = $table->schema->get_table( $rtable_name ) ) { |
0013ee25 |
698 | push @rfields, $ref_table->primary_key; |
1c14e9f1 |
699 | } |
0013ee25 |
700 | else { |
701 | warn "Can't find reference table '$rtable_name' " . |
702 | "in schema\n" if $options->{show_warnings}; |
5e56da9a |
703 | } |
704 | } |
705 | |
0013ee25 |
706 | if ( @rfields ) { |
fe0f47d0 |
707 | $def .= ' (' . $qf . join( "$qf, $qf", @rfields ) . $qf . ')'; |
0013ee25 |
708 | } |
709 | else { |
866d012e |
710 | warn "FK constraint on " . $table->name . '.' . |
0013ee25 |
711 | join('', @fields) . " has no reference fields\n" |
712 | if $options->{show_warnings}; |
713 | } |
5e56da9a |
714 | |
0013ee25 |
715 | if ( $c->match_type ) { |
716 | $def .= ' MATCH ' . |
717 | ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; |
718 | } |
719 | |
720 | if ( $c->on_delete ) { |
721 | $def .= ' ON DELETE '.join( ' ', $c->on_delete ); |
722 | } |
723 | |
724 | if ( $c->on_update ) { |
725 | $def .= ' ON UPDATE '.join( ' ', $c->on_update ); |
726 | } |
cd0ea0fd |
727 | return $def; |
9398955f |
728 | } |
729 | |
cd0ea0fd |
730 | return undef; |
0013ee25 |
731 | } |
732 | |
da5a1bae |
733 | sub alter_table |
734 | { |
735 | my ($to_table, $options) = @_; |
736 | |
7467c458 |
737 | my $qt = $options->{quote_table_names} || ''; |
da5a1bae |
738 | |
9a96648f |
739 | my $table_options = generate_table_options($to_table, $options) || ''; |
da5a1bae |
740 | my $out = sprintf('ALTER TABLE %s%s', |
741 | $qt . $to_table->name . $qt, |
742 | $table_options); |
743 | |
744 | return $out; |
745 | } |
746 | |
4d438549 |
747 | sub rename_field { alter_field(@_) } |
0013ee25 |
748 | sub alter_field |
749 | { |
fe0f47d0 |
750 | my ($from_field, $to_field, $options) = @_; |
751 | |
7467c458 |
752 | my $qf = $options->{quote_field_names} || ''; |
753 | my $qt = $options->{quote_table_names} || ''; |
0013ee25 |
754 | |
755 | my $out = sprintf('ALTER TABLE %s CHANGE COLUMN %s %s', |
fe0f47d0 |
756 | $qt . $to_field->table->name . $qt, |
4d438549 |
757 | $qf . $from_field->name . $qf, |
fe0f47d0 |
758 | create_field($to_field, $options)); |
0013ee25 |
759 | |
760 | return $out; |
761 | } |
762 | |
763 | sub add_field |
764 | { |
fe0f47d0 |
765 | my ($new_field, $options) = @_; |
766 | |
7467c458 |
767 | my $qt = $options->{quote_table_names} || ''; |
0013ee25 |
768 | |
769 | my $out = sprintf('ALTER TABLE %s ADD COLUMN %s', |
fe0f47d0 |
770 | $qt . $new_field->table->name . $qt, |
771 | create_field($new_field, $options)); |
0013ee25 |
772 | |
773 | return $out; |
774 | |
775 | } |
776 | |
777 | sub drop_field |
778 | { |
fe0f47d0 |
779 | my ($old_field, $options) = @_; |
0013ee25 |
780 | |
7467c458 |
781 | my $qf = $options->{quote_field_names} || ''; |
782 | my $qt = $options->{quote_table_names} || ''; |
fe0f47d0 |
783 | |
0013ee25 |
784 | my $out = sprintf('ALTER TABLE %s DROP COLUMN %s', |
fe0f47d0 |
785 | $qt . $old_field->table->name . $qt, |
786 | $qf . $old_field->name . $qf); |
0013ee25 |
787 | |
788 | return $out; |
789 | |
9398955f |
790 | } |
791 | |
4d438549 |
792 | sub batch_alter_table { |
793 | my ($table, $diff_hash, $options) = @_; |
794 | |
f9ed5d54 |
795 | # InnoDB has an issue with dropping and re-adding a FK constraint under the |
796 | # name in a single alter statment, see: http://bugs.mysql.com/bug.php?id=13741 |
797 | # |
798 | # We have to work round this. |
799 | |
800 | my %fks_to_alter; |
801 | my %fks_to_drop = map { |
802 | $_->type eq FOREIGN_KEY |
803 | ? ( $_->name => $_ ) |
804 | : ( ) |
805 | } @{$diff_hash->{alter_drop_constraint} }; |
806 | |
807 | my %fks_to_create = map { |
808 | if ( $_->type eq FOREIGN_KEY) { |
809 | $fks_to_alter{$_->name} = $fks_to_drop{$_->name} if $fks_to_drop{$_->name}; |
810 | ( $_->name => $_ ); |
811 | } else { ( ) } |
812 | } @{$diff_hash->{alter_create_constraint} }; |
813 | |
24d9fe69 |
814 | my @drop_stmt; |
f9ed5d54 |
815 | if (scalar keys %fks_to_alter) { |
816 | $diff_hash->{alter_drop_constraint} = [ |
817 | grep { !$fks_to_alter{$_->name} } @{ $diff_hash->{alter_drop_constraint} } |
818 | ]; |
819 | |
24d9fe69 |
820 | @drop_stmt = batch_alter_table($table, { alter_drop_constraint => [ values %fks_to_alter ] }, $options); |
f9ed5d54 |
821 | |
822 | } |
823 | |
4d438549 |
824 | my @stmts = map { |
825 | if (@{ $diff_hash->{$_} || [] }) { |
826 | my $meth = __PACKAGE__->can($_) or die __PACKAGE__ . " cant $_"; |
f9ed5d54 |
827 | map { $meth->( (ref $_ eq 'ARRAY' ? @$_ : $_), $options ) } @{ $diff_hash->{$_} } |
4d438549 |
828 | } else { () } |
46bf5655 |
829 | } qw/rename_table |
830 | alter_drop_constraint |
4d438549 |
831 | alter_drop_index |
832 | drop_field |
833 | add_field |
834 | alter_field |
835 | rename_field |
836 | alter_create_index |
837 | alter_create_constraint |
838 | alter_table/; |
839 | |
46bf5655 |
840 | # rename_table makes things a bit more complex |
841 | my $renamed_from = ""; |
842 | $renamed_from = $diff_hash->{rename_table}[0][0]->name |
843 | if $diff_hash->{rename_table} && @{$diff_hash->{rename_table}}; |
844 | |
4d438549 |
845 | return unless @stmts; |
846 | # Just zero or one stmts. return now |
24d9fe69 |
847 | return (@drop_stmt,@stmts) unless @stmts > 1; |
4d438549 |
848 | |
849 | # Now strip off the 'ALTER TABLE xyz' of all but the first one |
850 | |
7467c458 |
851 | my $qt = $options->{quote_table_names} || ''; |
4104f82b |
852 | my $table_name = $qt . $table->name . $qt; |
853 | |
854 | |
855 | my $re = $renamed_from |
856 | ? qr/^ALTER TABLE (?:\Q$table_name\E|\Q$qt$renamed_from$qt\E) / |
857 | : qr/^ALTER TABLE \Q$table_name\E /; |
4d438549 |
858 | |
859 | my $first = shift @stmts; |
4104f82b |
860 | my ($alter_table) = $first =~ /($re)/; |
46bf5655 |
861 | |
4d438549 |
862 | my $padd = " " x length($alter_table); |
863 | |
24d9fe69 |
864 | return @drop_stmt, join( ",\n", $first, map { s/$re//; $padd . $_ } @stmts); |
4104f82b |
865 | |
4d438549 |
866 | } |
867 | |
868 | sub drop_table { |
46bf5655 |
869 | my ($table, $options) = @_; |
870 | |
871 | my $qt = $options->{quote_table_names} || ''; |
4d438549 |
872 | |
873 | # Drop (foreign key) constraints so table drops cleanly |
46bf5655 |
874 | my @sql = batch_alter_table($table, { alter_drop_constraint => [ grep { $_->type eq 'FOREIGN KEY' } $table->get_constraints ] }, $options); |
875 | |
24d9fe69 |
876 | return (@sql, "DROP TABLE $qt$table$qt"); |
877 | # return join("\n", @sql, "DROP TABLE $qt$table$qt"); |
46bf5655 |
878 | |
879 | } |
880 | |
881 | sub rename_table { |
882 | my ($old_table, $new_table, $options) = @_; |
4d438549 |
883 | |
46bf5655 |
884 | my $qt = $options->{quote_table_names} || ''; |
4d438549 |
885 | |
46bf5655 |
886 | return "ALTER TABLE $qt$old_table$qt RENAME TO $qt$new_table$qt"; |
4d438549 |
887 | } |
888 | |
da5a1bae |
889 | sub next_unused_name { |
890 | my $name = shift || ''; |
891 | if ( !defined($used_names{$name}) ) { |
892 | $used_names{$name} = $name; |
893 | return $name; |
894 | } |
895 | |
896 | my $i = 1; |
897 | while ( defined($used_names{$name . '_' . $i}) ) { |
898 | ++$i; |
899 | } |
900 | $name .= '_' . $i; |
901 | $used_names{$name} = $name; |
902 | return $name; |
903 | } |
904 | |
9398955f |
905 | 1; |
9398955f |
906 | |
c855a748 |
907 | # ------------------------------------------------------------------- |
9398955f |
908 | |
c855a748 |
909 | =pod |
910 | |
911 | =head1 SEE ALSO |
912 | |
913 | SQL::Translator, http://www.mysql.com/. |
9398955f |
914 | |
2d6979da |
915 | =head1 AUTHORS |
9398955f |
916 | |
758ab1cd |
917 | darren chamberlain E<lt>darren@cpan.orgE<gt>, |
c855a748 |
918 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
919 | |
920 | =cut |