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1 | package SQL::Translator::Producer::SQLite; |
2 | |
3 | # ------------------------------------------------------------------- |
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4 | # $Id: SQLite.pm,v 1.2 2003-03-12 14:17:11 dlc Exp $ |
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5 | # ------------------------------------------------------------------- |
6 | # Copyright (C) 2003 Ken Y. Clark <kclark@cpan.org>, |
7 | # darren chamberlain <darren@cpan.org>, |
8 | # Chris Mungall <cjm@fruitfly.org> |
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; |
26 | use Data::Dumper; |
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27 | use SQL::Translator::Utils qw(debug); |
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28 | |
29 | use vars qw[ $VERSION $DEBUG $WARN ]; |
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30 | $VERSION = sprintf "%d.%02d", q$Revision: 1.2 $ =~ /(\d+)\.(\d+)/; |
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31 | |
32 | my %used_identifiers = (); |
33 | my $max_id_length = 30; |
34 | my %global_names; |
35 | my %truncated; |
36 | |
37 | sub import { |
38 | warn "loading " . __PACKAGE__ . "...\n"; |
39 | } |
40 | |
41 | sub produce { |
42 | my ($translator, $data) = @_; |
43 | $DEBUG = $translator->debug; |
44 | $WARN = $translator->show_warnings; |
45 | my $no_comments = $translator->no_comments; |
46 | my $add_drop_table = $translator->add_drop_table; |
47 | |
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48 | debug("PKG: Beginning production\n"); |
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49 | |
50 | my $create; |
51 | unless ( $no_comments ) { |
52 | $create .= sprintf "--\n-- Created by %s\n-- Created on %s\n--\n\n", |
53 | __PACKAGE__, scalar localtime; |
54 | } |
55 | |
56 | for my $table ( keys %{ $data } ) { |
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57 | debug("PKG: Looking at table '$table'\n"); |
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58 | my $table_data = $data->{$table}; |
59 | my @fields = sort { |
60 | $table_data->{'fields'}->{$a}->{'order'} |
61 | <=> |
62 | $table_data->{'fields'}->{$b}->{'order'} |
63 | } keys %{$table_data->{'fields'}}; |
64 | |
65 | # |
66 | # Header. Should this look like what mysqldump produces? |
67 | # |
68 | $create .= "--\n-- Table: $table\n--\n" unless $no_comments; |
69 | $create .= qq[DROP TABLE $table;\n] if $add_drop_table; |
70 | $create .= "CREATE TABLE $table ("; |
71 | |
72 | # |
73 | # Fields |
74 | # |
75 | for (my $i = 0; $i <= $#fields; $i++) { |
76 | my $field = $fields[$i]; |
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77 | debug("PKG: Looking at field '$field'\n"); |
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78 | my $field_data = $table_data->{'fields'}->{$field}; |
79 | my @fdata = ("", $field); |
80 | $create .= "\n"; |
81 | |
82 | # data type and size |
83 | my $data_type = lc $field_data->{'data_type'}; |
84 | my $list = $field_data->{'list'} || []; |
85 | my $commalist = join ",", @$list; |
86 | my $size; |
87 | |
88 | if ( $data_type eq 'set' ) { |
89 | $data_type = 'varchar'; |
90 | $size = length $commalist; |
91 | } |
92 | else { |
93 | $size = join( ', ', @{ $field_data->{'size'} || [] } ); |
94 | } |
95 | |
96 | push @fdata, sprintf "%s%s", $data_type, ($size) ? "($size)" : ''; |
97 | |
98 | # MySQL qualifiers |
99 | # for my $qual ( qw[ binary unsigned zerofill ] ) { |
100 | # push @fdata, $qual |
101 | # if $field_data->{ $qual } || |
102 | # $field_data->{ uc $qual }; |
103 | # } |
104 | |
105 | # Null? |
106 | push @fdata, "NOT NULL" unless $field_data->{'null'}; |
107 | |
108 | # Default? XXX Need better quoting! |
109 | my $default = $field_data->{'default'}; |
110 | if ( defined $default ) { |
111 | if ( uc $default eq 'NULL') { |
112 | push @fdata, "DEFAULT NULL"; |
113 | } else { |
114 | push @fdata, "DEFAULT '$default'"; |
115 | } |
116 | } |
117 | |
118 | # auto_increment? |
119 | # push @fdata, "auto_increment" if $field_data->{'is_auto_inc'}; |
120 | |
121 | # primary key? |
122 | # This is taken care of in the indices, could be duplicated here |
123 | # push @fdata, "PRIMARY KEY" if $field_data->{'is_primary_key'}; |
124 | |
125 | |
126 | $create .= (join " ", '', @fdata); |
127 | $create .= "," unless ($i == $#fields); |
128 | } |
129 | # |
130 | # Indices |
131 | # |
132 | my @index_creates; |
133 | my $idx_name_default; |
134 | for my $index ( @{ $table_data->{'indices'} || [] } ) { |
135 | my ($name, $type, $fields) = @{ $index }{ qw[ name type fields ] }; |
136 | $name ||= ''; |
137 | my $index_type = |
138 | $type eq 'primary_key' ? 'PRIMARY KEY' : |
139 | $type eq 'unique' ? 'UNIQUE INDEX' : 'INDEX'; |
140 | if ( $type eq 'primary_key' ) { |
141 | $create .= join(",\n", '', |
142 | " $index_type $name (" . join( ', ', @$fields ) . ')' |
143 | ); |
144 | } |
145 | else { |
146 | $name = mk_name( |
147 | $table, $name || ++$idx_name_default |
148 | ); |
149 | push @index_creates, |
150 | "CREATE $index_type $name on $table ". |
151 | '(' . join( ', ', @$fields ) . ')'; |
152 | } |
153 | } |
154 | |
155 | $create .= "\n);\n"; |
156 | |
157 | for my $index_create ( @index_creates ) { |
158 | $create .= "$index_create;\n"; |
159 | } |
160 | |
161 | $create .= "\n"; |
162 | } |
163 | |
164 | return $create; |
165 | } |
166 | |
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167 | |
168 | # ------------------------------------------------------------------- |
169 | sub mk_name { |
170 | my ($basename, $type, $scope, $critical) = @_; |
171 | my $basename_orig = $basename; |
172 | my $max_name = $type |
173 | ? $max_id_length - (length($type) + 1) |
174 | : $max_id_length; |
175 | $basename = substr( $basename, 0, $max_name ) |
176 | if length( $basename ) > $max_name; |
177 | my $name = $type ? "${type}_$basename" : $basename; |
178 | |
179 | if ( $basename ne $basename_orig and $critical ) { |
180 | my $show_type = $type ? "+'$type'" : ""; |
181 | warn "Truncating '$basename_orig'$show_type to $max_id_length ", |
182 | "character limit to make '$name'\n" if $WARN; |
183 | $truncated{ $basename_orig } = $name; |
184 | } |
185 | |
186 | $scope ||= \%global_names; |
187 | if ( my $prev = $scope->{ $name } ) { |
188 | my $name_orig = $name; |
189 | $name .= sprintf( "%02d", ++$prev ); |
190 | substr($name, $max_id_length - 3) = "00" |
191 | if length( $name ) > $max_id_length; |
192 | |
193 | warn "The name '$name_orig' has been changed to ", |
194 | "'$name' to make it unique.\n" if $WARN; |
195 | |
196 | $scope->{ $name_orig }++; |
197 | } |
198 | |
199 | $scope->{ $name }++; |
200 | return $name; |
201 | } |
202 | |
203 | 1; |
204 | __END__ |
205 | |
206 | =head1 NAME |
207 | |
208 | SQL::Translator::Producer::SQLite - SQLite-specific producer for SQL::Translator |
209 | |
210 | =head1 AUTHOR |
211 | |
212 | Ken Y. Clark E<lt>kclark@cpan.orgE<gt> |