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1 | package SQL::Translator::Producer::MySQL; |
2 | |
49e1eb70 |
3 | # ------------------------------------------------------------------- |
c855a748 |
4 | # $Id: MySQL.pm,v 1.28 2003-10-15 18:55:11 kycl4rk Exp $ |
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5 | # ------------------------------------------------------------------- |
abfa405a |
6 | # Copyright (C) 2003 Ken Y. Clark <kclark@cpan.org>, |
7 | # darren chamberlain <darren@cpan.org>, |
8 | # Chris Mungall <cjm@fruitfly.org> |
9398955f |
9 | # |
10 | # This program is free software; you can redistribute it and/or |
11 | # modify it under the terms of the GNU General Public License as |
12 | # published by the Free Software Foundation; version 2. |
13 | # |
14 | # This program is distributed in the hope that it will be useful, but |
15 | # WITHOUT ANY WARRANTY; without even the implied warranty of |
16 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
17 | # General Public License for more details. |
18 | # |
19 | # You should have received a copy of the GNU General Public License |
20 | # along with this program; if not, write to the Free Software |
21 | # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
22 | # 02111-1307 USA |
23 | # ------------------------------------------------------------------- |
24 | |
c855a748 |
25 | =head1 NAME |
26 | |
27 | SQL::Translator::Producer::MySQL - MySQL-specific producer for SQL::Translator |
28 | |
29 | =head1 SYNOPSIS |
30 | |
31 | Use via SQL::Translator: |
32 | |
33 | use SQL::Translator; |
34 | |
35 | my $t = SQL::Translator->new( parser => '...', producer => 'MySQL', '...' ); |
36 | $t->translate; |
37 | |
38 | =head1 DESCRIPTION |
39 | |
40 | This module will produce text output of the schema suitable for MySQL. |
41 | There are still some issues to be worked out with syntax differences |
42 | between MySQL versions 3 and 4 ("SET foreign_key_checks," character sets |
43 | for fields, etc.). |
44 | |
45 | =cut |
46 | |
9398955f |
47 | use strict; |
d529894e |
48 | use vars qw[ $VERSION $DEBUG ]; |
c855a748 |
49 | $VERSION = sprintf "%d.%02d", q$Revision: 1.28 $ =~ /(\d+)\.(\d+)/; |
5636ed00 |
50 | $DEBUG = 0 unless defined $DEBUG; |
9398955f |
51 | |
52 | use Data::Dumper; |
1c14e9f1 |
53 | use SQL::Translator::Schema::Constants; |
5ee19df8 |
54 | use SQL::Translator::Utils qw(debug header_comment); |
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55 | |
2620fc1c |
56 | my %translate = ( |
57 | # |
58 | # Oracle types |
59 | # |
60 | varchar2 => 'varchar', |
61 | long => 'text', |
62 | CLOB => 'longtext', |
63 | |
64 | # |
65 | # Sybase types |
66 | # |
67 | int => 'integer', |
68 | money => 'float', |
69 | real => 'double', |
70 | comment => 'text', |
71 | bit => 'tinyint', |
72 | ); |
73 | |
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74 | sub produce { |
a1d94525 |
75 | my $translator = shift; |
76 | local $DEBUG = $translator->debug; |
77 | my $no_comments = $translator->no_comments; |
78 | my $add_drop_table = $translator->add_drop_table; |
79 | my $schema = $translator->schema; |
d529894e |
80 | |
1a24938d |
81 | debug("PKG: Beginning production\n"); |
d529894e |
82 | |
83 | my $create; |
5ee19df8 |
84 | $create .= header_comment unless ($no_comments); |
0823773d |
85 | # \todo Don't set if MySQL 3.x is set on command line |
da147d03 |
86 | $create .= "SET foreign_key_checks=0;\n\n"; |
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87 | |
1c14e9f1 |
88 | for my $table ( $schema->get_tables ) { |
89 | my $table_name = $table->name; |
90 | debug("PKG: Looking at table '$table_name'\n"); |
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91 | |
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92 | # |
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93 | # Header. Should this look like what mysqldump produces? |
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94 | # |
1c14e9f1 |
95 | $create .= "--\n-- Table: $table_name\n--\n" unless $no_comments; |
96 | $create .= qq[DROP TABLE IF EXISTS $table_name;\n] if $add_drop_table; |
97 | $create .= "CREATE TABLE $table_name (\n"; |
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98 | |
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99 | # |
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100 | # Fields |
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101 | # |
1c14e9f1 |
102 | my @field_defs; |
103 | for my $field ( $table->get_fields ) { |
104 | my $field_name = $field->name; |
105 | debug("PKG: Looking at field '$field_name'\n"); |
106 | my $field_def = $field_name; |
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107 | |
108 | # data type and size |
1c14e9f1 |
109 | my $data_type = $field->data_type; |
110 | my @size = $field->size; |
35ed60b5 |
111 | my %extra = $field->extra; |
112 | my $list = $extra{'list'} || []; |
0823773d |
113 | # \todo deal with embedded quotes |
4524cf01 |
114 | my $commalist = join( ', ', map { qq['$_'] } @$list ); |
2620fc1c |
115 | |
1c14e9f1 |
116 | # |
117 | # Oracle "number" type -- figure best MySQL type |
118 | # |
119 | if ( lc $data_type eq 'number' ) { |
2620fc1c |
120 | # not an integer |
1c14e9f1 |
121 | if ( scalar @size > 1 ) { |
2620fc1c |
122 | $data_type = 'double'; |
123 | } |
1c14e9f1 |
124 | elsif ( $size[0] >= 12 ) { |
2620fc1c |
125 | $data_type = 'bigint'; |
126 | } |
1c14e9f1 |
127 | elsif ( $size[0] <= 1 ) { |
2620fc1c |
128 | $data_type = 'tinyint'; |
129 | } |
130 | else { |
131 | $data_type = 'int'; |
132 | } |
133 | } |
134 | elsif ( exists $translate{ $data_type } ) { |
135 | $data_type = $translate{ $data_type }; |
136 | } |
137 | |
6d3f6379 |
138 | @size = () if $data_type eq 'text'; |
139 | |
1c14e9f1 |
140 | $field_def .= " $data_type"; |
35ed60b5 |
141 | |
142 | if ( lc $data_type eq 'enum' ) { |
143 | $field_def .= '(' . $commalist . ')'; |
6d3f6379 |
144 | } |
145 | elsif ( defined $size[0] && $size[0] > 0 ) { |
1c14e9f1 |
146 | $field_def .= '(' . join( ', ', @size ) . ')'; |
147 | } |
d529894e |
148 | |
149 | # MySQL qualifiers |
150 | for my $qual ( qw[ binary unsigned zerofill ] ) { |
1c14e9f1 |
151 | my $val = $extra{ $qual || uc $qual } or next; |
0823773d |
152 | $field_def .= " $qual"; |
d529894e |
153 | } |
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154 | |
155 | # Null? |
1c14e9f1 |
156 | $field_def .= ' NOT NULL' unless $field->is_nullable; |
9398955f |
157 | |
158 | # Default? XXX Need better quoting! |
1c14e9f1 |
159 | my $default = $field->default_value; |
d529894e |
160 | if ( defined $default ) { |
161 | if ( uc $default eq 'NULL') { |
1c14e9f1 |
162 | $field_def .= ' DEFAULT NULL'; |
9398955f |
163 | } else { |
1c14e9f1 |
164 | $field_def .= " DEFAULT '$default'"; |
9398955f |
165 | } |
166 | } |
167 | |
168 | # auto_increment? |
1c14e9f1 |
169 | $field_def .= " auto_increment" if $field->is_auto_increment; |
170 | push @field_defs, $field_def; |
56120730 |
171 | } |
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172 | |
d529894e |
173 | # |
174 | # Indices |
175 | # |
1c14e9f1 |
176 | my @index_defs; |
177 | for my $index ( $table->get_indices ) { |
178 | push @index_defs, join( ' ', |
35ed60b5 |
179 | lc $index->type eq 'normal' ? 'INDEX' : $index->type, |
1c14e9f1 |
180 | $index->name, |
181 | '(' . join( ', ', $index->fields ) . ')' |
182 | ); |
d529894e |
183 | } |
184 | |
185 | # |
5e56da9a |
186 | # Constraints -- need to handle more than just FK. -ky |
187 | # |
2620fc1c |
188 | my @constraint_defs; |
1c14e9f1 |
189 | for my $c ( $table->get_constraints ) { |
190 | my @fields = $c->fields or next; |
5e56da9a |
191 | |
1c14e9f1 |
192 | if ( $c->type eq PRIMARY_KEY ) { |
193 | push @constraint_defs, |
194 | 'PRIMARY KEY (' . join(', ', @fields). ')'; |
195 | } |
196 | elsif ( $c->type eq UNIQUE ) { |
197 | push @constraint_defs, |
198 | 'UNIQUE (' . join(', ', @fields). ')'; |
199 | } |
200 | elsif ( $c->type eq FOREIGN_KEY ) { |
201 | my $def = join(' ', |
202 | map { $_ || () } 'FOREIGN KEY', $c->name |
203 | ); |
204 | |
205 | $def .= ' (' . join( ', ', @fields ) . ')'; |
206 | |
207 | $def .= ' REFERENCES ' . $c->reference_table; |
208 | |
209 | if ( my @rfields = $c->reference_fields ) { |
210 | $def .= ' (' . join( ', ', @rfields ) . ')'; |
5e56da9a |
211 | } |
212 | |
1c14e9f1 |
213 | if ( $c->match_type ) { |
5e56da9a |
214 | $def .= ' MATCH ' . |
1c14e9f1 |
215 | ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; |
5e56da9a |
216 | } |
217 | |
1c14e9f1 |
218 | if ( $c->on_delete ) { |
219 | $def .= ' ON DELETE '.join( ' ', $c->on_delete ); |
586809da |
220 | } |
221 | |
1c14e9f1 |
222 | if ( $c->on_update ) { |
223 | $def .= ' ON UPDATE '.join( ' ', $c->on_update ); |
586809da |
224 | } |
5e56da9a |
225 | |
2620fc1c |
226 | push @constraint_defs, $def; |
5e56da9a |
227 | } |
228 | } |
229 | |
1c14e9f1 |
230 | $create .= join(",\n", map { " $_" } |
231 | @field_defs, @index_defs, @constraint_defs |
232 | ); |
5e56da9a |
233 | |
234 | # |
9398955f |
235 | # Footer |
d529894e |
236 | # |
c45c546e |
237 | $create .= "\n)"; |
1c14e9f1 |
238 | # while ( |
239 | # my ( $key, $val ) = each %{ $table->options } |
240 | # ) { |
241 | # $create .= " $key=$val" |
242 | # } |
9398955f |
243 | $create .= ";\n\n"; |
244 | } |
245 | |
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246 | return $create; |
247 | } |
248 | |
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249 | 1; |
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250 | |
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251 | # ------------------------------------------------------------------- |
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252 | |
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253 | =pod |
254 | |
255 | =head1 SEE ALSO |
256 | |
257 | SQL::Translator, http://www.mysql.com/. |
9398955f |
258 | |
2d6979da |
259 | =head1 AUTHORS |
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260 | |
758ab1cd |
261 | darren chamberlain E<lt>darren@cpan.orgE<gt>, |
c855a748 |
262 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt>. |
263 | |
264 | =cut |