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1 | package DBIx::Class::Schema::Loader::DBI::InterBase; |
2 | |
3 | use strict; |
4 | use warnings; |
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5 | use mro 'c3'; |
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6 | use base qw/DBIx::Class::Schema::Loader::DBI/; |
7 | use Carp::Clan qw/^DBIx::Class/; |
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8 | use List::Util 'first'; |
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9 | use namespace::clean; |
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10 | |
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11 | our $VERSION = '0.07010'; |
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12 | |
13 | =head1 NAME |
14 | |
15 | DBIx::Class::Schema::Loader::DBI::InterBase - DBIx::Class::Schema::Loader::DBI |
16 | Firebird Implementation. |
17 | |
18 | =head1 DESCRIPTION |
19 | |
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20 | See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>. |
21 | |
22 | =head1 COLUMN NAME CASE ISSUES |
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23 | |
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24 | By default column names from unquoted DDL will be generated in lowercase, for |
25 | consistency with other backends. |
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26 | |
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27 | Set the L<preserve_case|DBIx::Class::Schema::Loader::Base/preserve_case> option |
28 | to true if you would like to have column names in the internal case, which is |
29 | uppercase for DDL that uses unquoted identifiers. |
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30 | |
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31 | Do not use quoting (the L<quote_char|DBIx::Class::Storage::DBI/quote_char> |
32 | option in L<connect_info|DBIx::Class::Storage::DBI/connect_info> when in the |
33 | default C<< preserve_case => 0 >> mode. |
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34 | |
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35 | Be careful to also not use any SQL reserved words in your DDL. |
36 | |
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37 | This will generate lowercase column names (as opposed to the actual uppercase |
38 | names) in your Result classes that will only work with quoting off. |
39 | |
40 | Mixed-case table and column names will be ignored when this option is on and |
41 | will not work with quoting turned off. |
42 | |
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43 | =cut |
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44 | |
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45 | sub _setup { |
46 | my $self = shift; |
47 | |
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48 | $self->next::method(@_); |
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49 | |
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50 | if (not defined $self->preserve_case) { |
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51 | warn <<'EOF'; |
52 | |
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53 | WARNING: Assuming unquoted Firebird DDL, see |
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54 | perldoc DBIx::Class::Schema::Loader::DBI::InterBase |
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55 | and the 'preserve_case' option in |
56 | perldoc DBIx::Class::Schema::Loader::Base |
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57 | for more information. |
58 | |
59 | EOF |
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60 | $self->preserve_case(0); |
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61 | } |
62 | |
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63 | if ($self->preserve_case) { |
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64 | $self->schema->storage->sql_maker->quote_char('"'); |
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65 | $self->schema->storage->sql_maker->name_sep('.'); |
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66 | } |
67 | else { |
68 | $self->schema->storage->sql_maker->quote_char(undef); |
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69 | $self->schema->storage->sql_maker->name_sep(undef); |
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70 | } |
71 | } |
72 | |
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73 | sub _table_pk_info { |
74 | my ($self, $table) = @_; |
75 | |
76 | my $dbh = $self->schema->storage->dbh; |
77 | my $sth = $dbh->prepare(<<'EOF'); |
78 | SELECT iseg.rdb$field_name |
79 | FROM rdb$relation_constraints rc |
80 | JOIN rdb$index_segments iseg ON rc.rdb$index_name = iseg.rdb$index_name |
81 | WHERE rc.rdb$constraint_type = 'PRIMARY KEY' and rc.rdb$relation_name = ? |
82 | ORDER BY iseg.rdb$field_position |
83 | EOF |
84 | $sth->execute($table); |
85 | |
86 | my @keydata; |
87 | |
88 | while (my ($col) = $sth->fetchrow_array) { |
89 | s/^\s+//, s/\s+\z// for $col; |
90 | |
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91 | push @keydata, $self->_lc($col); |
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92 | } |
93 | |
94 | return \@keydata; |
95 | } |
96 | |
97 | sub _table_fk_info { |
98 | my ($self, $table) = @_; |
99 | |
100 | my ($local_cols, $remote_cols, $remote_table, @rels); |
101 | my $dbh = $self->schema->storage->dbh; |
102 | my $sth = $dbh->prepare(<<'EOF'); |
103 | SELECT rc.rdb$constraint_name fk, iseg.rdb$field_name local_col, ri.rdb$relation_name remote_tab, riseg.rdb$field_name remote_col |
104 | FROM rdb$relation_constraints rc |
105 | JOIN rdb$index_segments iseg ON rc.rdb$index_name = iseg.rdb$index_name |
106 | JOIN rdb$indices li ON rc.rdb$index_name = li.rdb$index_name |
107 | JOIN rdb$indices ri ON li.rdb$foreign_key = ri.rdb$index_name |
108 | JOIN rdb$index_segments riseg ON iseg.rdb$field_position = riseg.rdb$field_position and ri.rdb$index_name = riseg.rdb$index_name |
109 | WHERE rc.rdb$constraint_type = 'FOREIGN KEY' and rc.rdb$relation_name = ? |
110 | ORDER BY iseg.rdb$field_position |
111 | EOF |
112 | $sth->execute($table); |
113 | |
114 | while (my ($fk, $local_col, $remote_tab, $remote_col) = $sth->fetchrow_array) { |
115 | s/^\s+//, s/\s+\z// for $fk, $local_col, $remote_tab, $remote_col; |
116 | |
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117 | push @{$local_cols->{$fk}}, $self->_lc($local_col); |
118 | push @{$remote_cols->{$fk}}, $self->_lc($remote_col); |
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119 | $remote_table->{$fk} = $remote_tab; |
120 | } |
121 | |
122 | foreach my $fk (keys %$remote_table) { |
123 | push @rels, { |
124 | local_columns => $local_cols->{$fk}, |
125 | remote_columns => $remote_cols->{$fk}, |
126 | remote_table => $remote_table->{$fk}, |
127 | }; |
128 | } |
129 | return \@rels; |
130 | } |
131 | |
132 | sub _table_uniq_info { |
133 | my ($self, $table) = @_; |
134 | |
135 | my $dbh = $self->schema->storage->dbh; |
136 | my $sth = $dbh->prepare(<<'EOF'); |
137 | SELECT rc.rdb$constraint_name, iseg.rdb$field_name |
138 | FROM rdb$relation_constraints rc |
139 | JOIN rdb$index_segments iseg ON rc.rdb$index_name = iseg.rdb$index_name |
140 | WHERE rc.rdb$constraint_type = 'UNIQUE' and rc.rdb$relation_name = ? |
141 | ORDER BY iseg.rdb$field_position |
142 | EOF |
143 | $sth->execute($table); |
144 | |
145 | my $constraints; |
146 | while (my ($constraint_name, $column) = $sth->fetchrow_array) { |
147 | s/^\s+//, s/\s+\z// for $constraint_name, $column; |
148 | |
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149 | push @{$constraints->{$constraint_name}}, $self->_lc($column); |
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150 | } |
151 | |
152 | my @uniqs = map { [ $_ => $constraints->{$_} ] } keys %$constraints; |
153 | return \@uniqs; |
154 | } |
155 | |
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156 | sub _columns_info_for { |
157 | my $self = shift; |
158 | my ($table) = @_; |
159 | |
160 | my $result = $self->next::method(@_); |
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161 | |
162 | my $dbh = $self->schema->storage->dbh; |
163 | |
164 | local $dbh->{LongReadLen} = 100000; |
165 | local $dbh->{LongTruncOk} = 1; |
166 | |
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167 | while (my ($column, $info) = each %$result) { |
168 | my $sth = $dbh->prepare(<<'EOF'); |
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169 | SELECT t.rdb$trigger_source |
170 | FROM rdb$triggers t |
171 | WHERE t.rdb$relation_name = ? |
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172 | AND t.rdb$system_flag = 0 -- user defined |
173 | AND t.rdb$trigger_type = 1 -- BEFORE INSERT |
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174 | EOF |
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175 | $sth->execute($table); |
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176 | |
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177 | while (my ($trigger) = $sth->fetchrow_array) { |
178 | my @trig_cols = map { /^"([^"]+)/ ? $1 : uc($_) } $trigger =~ /new\.("?\w+"?)/ig; |
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179 | |
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180 | my ($quoted, $generator) = $trigger =~ /(?:gen_id\s* \( \s* |next \s* value \s* for \s*)(")?(\w+)/ix; |
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181 | |
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182 | if ($generator) { |
183 | $generator = uc $generator unless $quoted; |
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184 | |
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185 | if (first { $self->_uc($_) eq $self->_uc($column) } @trig_cols) { |
186 | $info->{is_auto_increment} = 1; |
187 | $info->{sequence} = $generator; |
188 | last; |
189 | } |
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190 | } |
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191 | } |
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192 | |
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193 | # fix up types |
194 | $sth = $dbh->prepare(<<'EOF'); |
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195 | SELECT f.rdb$field_precision, f.rdb$field_scale, f.rdb$field_type, f.rdb$field_sub_type, f.rdb$character_set_id, f.rdb$character_length, t.rdb$type_name, st.rdb$type_name |
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196 | FROM rdb$fields f |
197 | JOIN rdb$relation_fields rf ON rf.rdb$field_source = f.rdb$field_name |
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198 | LEFT JOIN rdb$types t ON f.rdb$field_type = t.rdb$type AND t.rdb$field_name = 'RDB$FIELD_TYPE' |
199 | LEFT JOIN rdb$types st ON f.rdb$field_sub_type = st.rdb$type AND st.rdb$field_name = 'RDB$FIELD_SUB_TYPE' |
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200 | WHERE rf.rdb$relation_name = ? |
201 | AND rf.rdb$field_name = ? |
202 | EOF |
203 | $sth->execute($table, $self->_uc($column)); |
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204 | my ($precision, $scale, $type_num, $sub_type_num, $char_set_id, $char_length, $type_name, $sub_type_name) = $sth->fetchrow_array; |
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205 | $scale = -$scale if $scale && $scale < 0; |
206 | |
207 | if ($type_name && $sub_type_name) { |
208 | s/\s+\z// for $type_name, $sub_type_name; |
209 | |
210 | # fixups primarily for DBD::InterBase |
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211 | if ($info->{data_type} =~ /^(?:integer|int|smallint|bigint|-9581)\z/) { |
212 | if ($precision && $type_name =~ /^(?:LONG|INT64)\z/ && $sub_type_name eq 'BLR') { |
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213 | $info->{data_type} = 'decimal'; |
214 | } |
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215 | elsif ($precision && $type_name =~ /^(?:LONG|SHORT|INT64)\z/ && $sub_type_name eq 'TEXT') { |
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216 | $info->{data_type} = 'numeric'; |
217 | } |
218 | elsif ((not $precision) && $type_name eq 'INT64' && $sub_type_name eq 'BINARY') { |
219 | $info->{data_type} = 'bigint'; |
220 | } |
221 | } |
222 | # ODBC makes regular blobs sub_type blr |
223 | elsif ($type_name eq 'BLOB') { |
224 | if ($sub_type_name eq 'BINARY') { |
225 | $info->{data_type} = 'blob'; |
226 | } |
227 | elsif ($sub_type_name eq 'TEXT') { |
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228 | if ($char_set_id == 3) { |
229 | $info->{data_type} = 'blob sub_type text character set unicode_fss'; |
230 | } |
231 | else { |
232 | $info->{data_type} = 'blob sub_type text'; |
233 | } |
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234 | } |
235 | } |
236 | } |
237 | |
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238 | if ($info->{data_type} =~ /^(?:decimal|numeric)\z/ && defined $precision && defined $scale) { |
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239 | if ($precision == 9 && $scale == 0) { |
240 | delete $info->{size}; |
241 | } |
242 | else { |
243 | $info->{size} = [$precision, $scale]; |
244 | } |
245 | } |
246 | |
247 | if ($info->{data_type} eq '11') { |
248 | $info->{data_type} = 'timestamp'; |
249 | } |
250 | elsif ($info->{data_type} eq '10') { |
251 | $info->{data_type} = 'time'; |
252 | } |
253 | elsif ($info->{data_type} eq '9') { |
254 | $info->{data_type} = 'date'; |
255 | } |
256 | elsif ($info->{data_type} eq 'character varying') { |
257 | $info->{data_type} = 'varchar'; |
258 | } |
259 | elsif ($info->{data_type} eq 'character') { |
260 | $info->{data_type} = 'char'; |
261 | } |
28d53000 |
262 | elsif ($info->{data_type} eq 'float') { |
263 | $info->{data_type} = 'real'; |
264 | } |
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265 | elsif ($info->{data_type} eq 'int64' || $info->{data_type} eq '-9581') { |
266 | # the constant is just in case, the query should pick up the type |
267 | $info->{data_type} = 'bigint'; |
268 | } |
269 | |
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270 | if ($info->{data_type} =~ /^(?:char|varchar)\z/) { |
271 | $info->{size} = $char_length; |
272 | |
273 | if ($char_set_id == 3) { |
274 | $info->{data_type} .= '(x) character set unicode_fss'; |
275 | } |
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276 | } |
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277 | elsif ($info->{data_type} !~ /^(?:numeric|decimal)\z/) { |
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278 | delete $info->{size}; |
279 | } |
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280 | |
281 | # get default |
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282 | delete $info->{default_value} if $info->{default_value} && $info->{default_value} eq 'NULL'; |
283 | |
284 | $sth = $dbh->prepare(<<'EOF'); |
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285 | SELECT rf.rdb$default_source |
286 | FROM rdb$relation_fields rf |
287 | WHERE rf.rdb$relation_name = ? |
288 | AND rf.rdb$field_name = ? |
289 | EOF |
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290 | $sth->execute($table, $self->_uc($column)); |
291 | my ($default_src) = $sth->fetchrow_array; |
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292 | |
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293 | if ($default_src && (my ($def) = $default_src =~ /^DEFAULT \s+ (\S+)/ix)) { |
294 | if (my ($quoted) = $def =~ /^'(.*?)'\z/) { |
295 | $info->{default_value} = $quoted; |
296 | } |
297 | else { |
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298 | $info->{default_value} = $def =~ /^-?\d/ ? $def : \$def; |
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299 | } |
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300 | } |
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301 | |
302 | ${ $info->{default_value} } = 'current_timestamp' |
303 | if ref $info->{default_value} && ${ $info->{default_value} } eq 'CURRENT_TIMESTAMP'; |
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304 | } |
305 | |
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306 | return $result; |
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307 | } |
308 | |
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309 | =head1 SEE ALSO |
310 | |
311 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
312 | L<DBIx::Class::Schema::Loader::DBI> |
313 | |
314 | =head1 AUTHOR |
315 | |
316 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
317 | |
318 | =head1 LICENSE |
319 | |
320 | This library is free software; you can redistribute it and/or modify it under |
321 | the same terms as Perl itself. |
322 | |
323 | =cut |
324 | |
325 | 1; |
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326 | # vim:et sw=4 sts=4 tw=0: |