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1 | package SQL::Translator::Producer::MySQL; |
2 | |
49e1eb70 |
3 | # ------------------------------------------------------------------- |
2b695517 |
4 | # $Id: MySQL.pm,v 1.37 2004-08-11 21:55:34 kycl4rk 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 | |
43 | =cut |
44 | |
9398955f |
45 | use strict; |
d529894e |
46 | use vars qw[ $VERSION $DEBUG ]; |
2b695517 |
47 | $VERSION = sprintf "%d.%02d", q$Revision: 1.37 $ =~ /(\d+)\.(\d+)/; |
5636ed00 |
48 | $DEBUG = 0 unless defined $DEBUG; |
9398955f |
49 | |
50 | use Data::Dumper; |
1c14e9f1 |
51 | use SQL::Translator::Schema::Constants; |
5ee19df8 |
52 | use SQL::Translator::Utils qw(debug header_comment); |
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53 | |
d2344c83 |
54 | # |
55 | # Use only lowercase for the keys (e.g. "long" and not "LONG") |
56 | # |
2620fc1c |
57 | my %translate = ( |
58 | # |
59 | # Oracle types |
60 | # |
61 | varchar2 => 'varchar', |
62 | long => 'text', |
d2344c83 |
63 | clob => 'longtext', |
2620fc1c |
64 | |
65 | # |
66 | # Sybase types |
67 | # |
68 | int => 'integer', |
69 | money => 'float', |
70 | real => 'double', |
71 | comment => 'text', |
72 | bit => 'tinyint', |
87779799 |
73 | |
74 | # |
75 | # Access types |
76 | # |
77 | 'long integer' => 'integer', |
78 | 'text' => 'text', |
79 | 'datetime' => 'datetime', |
2620fc1c |
80 | ); |
81 | |
9398955f |
82 | sub produce { |
a1d94525 |
83 | my $translator = shift; |
84 | local $DEBUG = $translator->debug; |
85 | my $no_comments = $translator->no_comments; |
86 | my $add_drop_table = $translator->add_drop_table; |
87 | my $schema = $translator->schema; |
d529894e |
88 | |
1a24938d |
89 | debug("PKG: Beginning production\n"); |
d529894e |
90 | |
91 | my $create; |
5ee19df8 |
92 | $create .= header_comment unless ($no_comments); |
0823773d |
93 | # \todo Don't set if MySQL 3.x is set on command line |
da147d03 |
94 | $create .= "SET foreign_key_checks=0;\n\n"; |
9398955f |
95 | |
1c14e9f1 |
96 | for my $table ( $schema->get_tables ) { |
97 | my $table_name = $table->name; |
98 | debug("PKG: Looking at table '$table_name'\n"); |
9398955f |
99 | |
d529894e |
100 | # |
9398955f |
101 | # Header. Should this look like what mysqldump produces? |
d529894e |
102 | # |
1c14e9f1 |
103 | $create .= "--\n-- Table: $table_name\n--\n" unless $no_comments; |
104 | $create .= qq[DROP TABLE IF EXISTS $table_name;\n] if $add_drop_table; |
105 | $create .= "CREATE TABLE $table_name (\n"; |
9398955f |
106 | |
d529894e |
107 | # |
9398955f |
108 | # Fields |
d529894e |
109 | # |
1c14e9f1 |
110 | my @field_defs; |
111 | for my $field ( $table->get_fields ) { |
112 | my $field_name = $field->name; |
113 | debug("PKG: Looking at field '$field_name'\n"); |
114 | my $field_def = $field_name; |
9398955f |
115 | |
116 | # data type and size |
1c14e9f1 |
117 | my $data_type = $field->data_type; |
118 | my @size = $field->size; |
35ed60b5 |
119 | my %extra = $field->extra; |
120 | my $list = $extra{'list'} || []; |
0823773d |
121 | # \todo deal with embedded quotes |
4524cf01 |
122 | my $commalist = join( ', ', map { qq['$_'] } @$list ); |
2620fc1c |
123 | |
1c14e9f1 |
124 | # |
125 | # Oracle "number" type -- figure best MySQL type |
126 | # |
127 | if ( lc $data_type eq 'number' ) { |
2620fc1c |
128 | # not an integer |
1c14e9f1 |
129 | if ( scalar @size > 1 ) { |
2620fc1c |
130 | $data_type = 'double'; |
131 | } |
1c14e9f1 |
132 | elsif ( $size[0] >= 12 ) { |
2620fc1c |
133 | $data_type = 'bigint'; |
134 | } |
1c14e9f1 |
135 | elsif ( $size[0] <= 1 ) { |
2620fc1c |
136 | $data_type = 'tinyint'; |
137 | } |
138 | else { |
139 | $data_type = 'int'; |
140 | } |
141 | } |
49758c5d |
142 | # |
143 | # Convert a large Oracle varchar to "text" |
144 | # |
2b695517 |
145 | elsif ( $data_type =~ /char/i && $size[0] > 255 ) { |
49758c5d |
146 | $data_type = 'text'; |
147 | @size = (); |
148 | } |
4167a803 |
149 | elsif ( $data_type =~ /char/i && ! $size[0] ) { |
150 | @size = (255); |
151 | } |
2b695517 |
152 | elsif ( $data_type =~ /boolean/i ) { |
153 | $data_type = 'enum'; |
154 | $commalist = "'0','1'"; |
155 | } |
d2344c83 |
156 | elsif ( exists $translate{ lc $data_type } ) { |
157 | $data_type = $translate{ lc $data_type }; |
2620fc1c |
158 | } |
159 | |
472b787e |
160 | @size = () if $data_type =~ /(text|blob)/i; |
6d3f6379 |
161 | |
2b695517 |
162 | if ( $data_type =~ /(double|float)/ && scalar @size == 1 ) { |
163 | push @size, '0'; |
164 | } |
165 | |
1c14e9f1 |
166 | $field_def .= " $data_type"; |
35ed60b5 |
167 | |
168 | if ( lc $data_type eq 'enum' ) { |
169 | $field_def .= '(' . $commalist . ')'; |
6d3f6379 |
170 | } |
171 | elsif ( defined $size[0] && $size[0] > 0 ) { |
1c14e9f1 |
172 | $field_def .= '(' . join( ', ', @size ) . ')'; |
173 | } |
d529894e |
174 | |
175 | # MySQL qualifiers |
176 | for my $qual ( qw[ binary unsigned zerofill ] ) { |
1c14e9f1 |
177 | my $val = $extra{ $qual || uc $qual } or next; |
0823773d |
178 | $field_def .= " $qual"; |
d529894e |
179 | } |
9398955f |
180 | |
181 | # Null? |
1c14e9f1 |
182 | $field_def .= ' NOT NULL' unless $field->is_nullable; |
9398955f |
183 | |
184 | # Default? XXX Need better quoting! |
1c14e9f1 |
185 | my $default = $field->default_value; |
d529894e |
186 | if ( defined $default ) { |
187 | if ( uc $default eq 'NULL') { |
1c14e9f1 |
188 | $field_def .= ' DEFAULT NULL'; |
9398955f |
189 | } else { |
1c14e9f1 |
190 | $field_def .= " DEFAULT '$default'"; |
9398955f |
191 | } |
192 | } |
193 | |
194 | # auto_increment? |
1c14e9f1 |
195 | $field_def .= " auto_increment" if $field->is_auto_increment; |
196 | push @field_defs, $field_def; |
56120730 |
197 | } |
9398955f |
198 | |
d529894e |
199 | # |
200 | # Indices |
201 | # |
1c14e9f1 |
202 | my @index_defs; |
bc60004d |
203 | my %indexed_fields; |
1c14e9f1 |
204 | for my $index ( $table->get_indices ) { |
205 | push @index_defs, join( ' ', |
35ed60b5 |
206 | lc $index->type eq 'normal' ? 'INDEX' : $index->type, |
1c14e9f1 |
207 | $index->name, |
208 | '(' . join( ', ', $index->fields ) . ')' |
209 | ); |
bc60004d |
210 | $indexed_fields{ $_ } = 1 for $index->fields; |
d529894e |
211 | } |
212 | |
213 | # |
5e56da9a |
214 | # Constraints -- need to handle more than just FK. -ky |
215 | # |
2620fc1c |
216 | my @constraint_defs; |
d2d944cc |
217 | my $has_fk; |
1c14e9f1 |
218 | for my $c ( $table->get_constraints ) { |
219 | my @fields = $c->fields or next; |
5e56da9a |
220 | |
1c14e9f1 |
221 | if ( $c->type eq PRIMARY_KEY ) { |
222 | push @constraint_defs, |
223 | 'PRIMARY KEY (' . join(', ', @fields). ')'; |
224 | } |
225 | elsif ( $c->type eq UNIQUE ) { |
226 | push @constraint_defs, |
227 | 'UNIQUE (' . join(', ', @fields). ')'; |
228 | } |
229 | elsif ( $c->type eq FOREIGN_KEY ) { |
d2d944cc |
230 | $has_fk = 1; |
bc60004d |
231 | |
232 | # |
233 | # Make sure FK field is indexed or MySQL complains. |
234 | # |
235 | unless ( $indexed_fields{ $fields[0] } ) { |
236 | push @index_defs, "INDEX ($fields[0])"; |
237 | } |
238 | |
1c14e9f1 |
239 | my $def = join(' ', |
240 | map { $_ || () } 'FOREIGN KEY', $c->name |
241 | ); |
242 | |
243 | $def .= ' (' . join( ', ', @fields ) . ')'; |
244 | |
245 | $def .= ' REFERENCES ' . $c->reference_table; |
246 | |
247 | if ( my @rfields = $c->reference_fields ) { |
248 | $def .= ' (' . join( ', ', @rfields ) . ')'; |
5e56da9a |
249 | } |
250 | |
1c14e9f1 |
251 | if ( $c->match_type ) { |
5e56da9a |
252 | $def .= ' MATCH ' . |
1c14e9f1 |
253 | ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; |
5e56da9a |
254 | } |
255 | |
1c14e9f1 |
256 | if ( $c->on_delete ) { |
257 | $def .= ' ON DELETE '.join( ' ', $c->on_delete ); |
586809da |
258 | } |
259 | |
1c14e9f1 |
260 | if ( $c->on_update ) { |
261 | $def .= ' ON UPDATE '.join( ' ', $c->on_update ); |
586809da |
262 | } |
5e56da9a |
263 | |
2620fc1c |
264 | push @constraint_defs, $def; |
5e56da9a |
265 | } |
266 | } |
267 | |
1c14e9f1 |
268 | $create .= join(",\n", map { " $_" } |
269 | @field_defs, @index_defs, @constraint_defs |
270 | ); |
5e56da9a |
271 | |
272 | # |
9398955f |
273 | # Footer |
d529894e |
274 | # |
c45c546e |
275 | $create .= "\n)"; |
d2d944cc |
276 | if ( $has_fk ) { |
277 | $create .= " Type=InnoDB"; |
278 | } |
9398955f |
279 | $create .= ";\n\n"; |
280 | } |
281 | |
9398955f |
282 | return $create; |
283 | } |
284 | |
9398955f |
285 | 1; |
9398955f |
286 | |
c855a748 |
287 | # ------------------------------------------------------------------- |
9398955f |
288 | |
c855a748 |
289 | =pod |
290 | |
291 | =head1 SEE ALSO |
292 | |
293 | SQL::Translator, http://www.mysql.com/. |
9398955f |
294 | |
2d6979da |
295 | =head1 AUTHORS |
9398955f |
296 | |
758ab1cd |
297 | darren chamberlain E<lt>darren@cpan.orgE<gt>, |
c855a748 |
298 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
299 | |
300 | =cut |