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1 | package SQL::Translator::Producer::MySQL; |
2 | |
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3 | # ------------------------------------------------------------------- |
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4 | # $Id: MySQL.pm,v 1.21 2003-06-09 01:56:51 kycl4rk Exp $ |
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5 | # ------------------------------------------------------------------- |
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6 | # Copyright (C) 2003 Ken Y. Clark <kclark@cpan.org>, |
7 | # darren chamberlain <darren@cpan.org>, |
8 | # Chris Mungall <cjm@fruitfly.org> |
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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 | |
25 | use strict; |
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26 | use vars qw[ $VERSION $DEBUG ]; |
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27 | $VERSION = sprintf "%d.%02d", q$Revision: 1.21 $ =~ /(\d+)\.(\d+)/; |
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28 | $DEBUG = 0 unless defined $DEBUG; |
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29 | |
30 | use Data::Dumper; |
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31 | use SQL::Translator::Schema::Constants; |
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32 | use SQL::Translator::Utils qw(debug header_comment); |
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33 | |
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34 | my %translate = ( |
35 | # |
36 | # Oracle types |
37 | # |
38 | varchar2 => 'varchar', |
39 | long => 'text', |
40 | CLOB => 'longtext', |
41 | |
42 | # |
43 | # Sybase types |
44 | # |
45 | int => 'integer', |
46 | money => 'float', |
47 | real => 'double', |
48 | comment => 'text', |
49 | bit => 'tinyint', |
50 | ); |
51 | |
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52 | sub produce { |
53 | my ($translator, $data) = @_; |
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54 | local $DEBUG = $translator->debug; |
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55 | my $no_comments = $translator->no_comments; |
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56 | my $add_drop_table = $translator->add_drop_table; |
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57 | my $schema = $translator->schema; |
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58 | |
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59 | debug("PKG: Beginning production\n"); |
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60 | |
61 | my $create; |
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62 | $create .= header_comment unless ($no_comments); |
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63 | |
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64 | for my $table ( $schema->get_tables ) { |
65 | my $table_name = $table->name; |
66 | debug("PKG: Looking at table '$table_name'\n"); |
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67 | |
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68 | # |
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69 | # Header. Should this look like what mysqldump produces? |
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70 | # |
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71 | $create .= "--\n-- Table: $table_name\n--\n" unless $no_comments; |
72 | $create .= qq[DROP TABLE IF EXISTS $table_name;\n] if $add_drop_table; |
73 | $create .= "CREATE TABLE $table_name (\n"; |
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74 | |
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75 | # |
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76 | # Fields |
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77 | # |
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78 | my @field_defs; |
79 | for my $field ( $table->get_fields ) { |
80 | my $field_name = $field->name; |
81 | debug("PKG: Looking at field '$field_name'\n"); |
82 | my $field_def = $field_name; |
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83 | |
84 | # data type and size |
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85 | my $data_type = $field->data_type; |
86 | my @size = $field->size; |
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87 | |
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88 | # |
89 | # Oracle "number" type -- figure best MySQL type |
90 | # |
91 | if ( lc $data_type eq 'number' ) { |
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92 | # not an integer |
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93 | if ( scalar @size > 1 ) { |
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94 | $data_type = 'double'; |
95 | } |
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96 | elsif ( $size[0] >= 12 ) { |
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97 | $data_type = 'bigint'; |
98 | } |
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99 | elsif ( $size[0] <= 1 ) { |
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100 | $data_type = 'tinyint'; |
101 | } |
102 | else { |
103 | $data_type = 'int'; |
104 | } |
105 | } |
106 | elsif ( exists $translate{ $data_type } ) { |
107 | $data_type = $translate{ $data_type }; |
108 | } |
109 | |
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110 | $field_def .= " $data_type"; |
111 | if ( defined $size[0] && $size[0] > 0 ) { |
112 | $field_def .= '(' . join( ', ', @size ) . ')'; |
113 | } |
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114 | |
115 | # MySQL qualifiers |
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116 | my %extra = $field->extra; |
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117 | for my $qual ( qw[ binary unsigned zerofill ] ) { |
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118 | my $val = $extra{ $qual || uc $qual } or next; |
119 | $field_def .= " $val"; |
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120 | } |
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121 | |
122 | # Null? |
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123 | $field_def .= ' NOT NULL' unless $field->is_nullable; |
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124 | |
125 | # Default? XXX Need better quoting! |
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126 | my $default = $field->default_value; |
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127 | if ( defined $default ) { |
128 | if ( uc $default eq 'NULL') { |
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129 | $field_def .= ' DEFAULT NULL'; |
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130 | } else { |
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131 | $field_def .= " DEFAULT '$default'"; |
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132 | } |
133 | } |
134 | |
135 | # auto_increment? |
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136 | $field_def .= " auto_increment" if $field->is_auto_increment; |
137 | push @field_defs, $field_def; |
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138 | } |
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139 | |
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140 | # |
141 | # Indices |
142 | # |
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143 | my @index_defs; |
144 | for my $index ( $table->get_indices ) { |
145 | push @index_defs, join( ' ', |
146 | $index->type, |
147 | $index->name, |
148 | '(' . join( ', ', $index->fields ) . ')' |
149 | ); |
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150 | } |
151 | |
152 | # |
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153 | # Constraints -- need to handle more than just FK. -ky |
154 | # |
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155 | my @constraint_defs; |
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156 | for my $c ( $table->get_constraints ) { |
157 | my @fields = $c->fields or next; |
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158 | |
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159 | if ( $c->type eq PRIMARY_KEY ) { |
160 | push @constraint_defs, |
161 | 'PRIMARY KEY (' . join(', ', @fields). ')'; |
162 | } |
163 | elsif ( $c->type eq UNIQUE ) { |
164 | push @constraint_defs, |
165 | 'UNIQUE (' . join(', ', @fields). ')'; |
166 | } |
167 | elsif ( $c->type eq FOREIGN_KEY ) { |
168 | my $def = join(' ', |
169 | map { $_ || () } 'FOREIGN KEY', $c->name |
170 | ); |
171 | |
172 | $def .= ' (' . join( ', ', @fields ) . ')'; |
173 | |
174 | $def .= ' REFERENCES ' . $c->reference_table; |
175 | |
176 | if ( my @rfields = $c->reference_fields ) { |
177 | $def .= ' (' . join( ', ', @rfields ) . ')'; |
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178 | } |
179 | |
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180 | if ( $c->match_type ) { |
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181 | $def .= ' MATCH ' . |
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182 | ( $c->match_type =~ /full/i ) ? 'FULL' : 'PARTIAL'; |
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183 | } |
184 | |
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185 | if ( $c->on_delete ) { |
186 | $def .= ' ON DELETE '.join( ' ', $c->on_delete ); |
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187 | } |
188 | |
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189 | if ( $c->on_update ) { |
190 | $def .= ' ON UPDATE '.join( ' ', $c->on_update ); |
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191 | } |
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192 | |
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193 | push @constraint_defs, $def; |
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194 | } |
195 | } |
196 | |
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197 | $create .= join(",\n", map { " $_" } |
198 | @field_defs, @index_defs, @constraint_defs |
199 | ); |
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200 | |
201 | # |
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202 | # Footer |
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203 | # |
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204 | $create .= "\n)"; |
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205 | # while ( |
206 | # my ( $key, $val ) = each %{ $table->options } |
207 | # ) { |
208 | # $create .= " $key=$val" |
209 | # } |
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210 | $create .= ";\n\n"; |
211 | } |
212 | |
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213 | return $create; |
214 | } |
215 | |
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216 | 1; |
217 | __END__ |
218 | |
219 | =head1 NAME |
220 | |
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221 | SQL::Translator::Producer::MySQL - MySQL-specific producer for SQL::Translator |
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222 | |
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223 | =head1 AUTHORS |
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224 | |
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225 | darren chamberlain E<lt>darren@cpan.orgE<gt>, |
226 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt> |