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996be9ee |
1 | package DBIx::Class::Schema::Loader::DBI; |
2 | |
3 | use strict; |
4 | use warnings; |
abaf2c66 |
5 | use base qw/DBIx::Class::Schema::Loader::Base/; |
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6 | use Class::C3; |
fa994d3c |
7 | use Carp::Clan qw/^DBIx::Class/; |
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8 | |
9990e58f |
9 | our $VERSION = '0.07000'; |
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10 | |
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11 | =head1 NAME |
12 | |
13 | DBIx::Class::Schema::Loader::DBI - DBIx::Class::Schema::Loader DBI Implementation. |
14 | |
15 | =head1 SYNOPSIS |
16 | |
17 | See L<DBIx::Class::Schema::Loader::Base> |
18 | |
19 | =head1 DESCRIPTION |
20 | |
21 | This is the base class for L<DBIx::Class::Schema::Loader::Base> classes for |
22 | DBI-based storage backends, and implements the common functionality between them. |
23 | |
24 | See L<DBIx::Class::Schema::Loader::Base> for the available options. |
25 | |
26 | =head1 METHODS |
27 | |
28 | =head2 new |
29 | |
30 | Overlays L<DBIx::Class::Schema::Loader::Base/new> to do some DBI-specific |
31 | things. |
32 | |
33 | =cut |
34 | |
35 | sub new { |
36 | my $self = shift->next::method(@_); |
37 | |
71a6e88a |
38 | # rebless to vendor-specific class if it exists and loads and we're not in a |
39 | # custom class. |
40 | if (not $self->loader_class) { |
41 | my $dbh = $self->schema->storage->dbh; |
42 | my $driver = $dbh->{Driver}->{Name}; |
43 | |
44 | my $subclass = 'DBIx::Class::Schema::Loader::DBI::' . $driver; |
45 | if ($self->load_optional_class($subclass)) { |
46 | bless $self, $subclass unless $self->isa($subclass); |
47 | $self->_rebless; |
48 | } |
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49 | } |
50 | |
51 | # Set up the default quoting character and name seperators |
243c6ebc |
52 | $self->{_quoter} = $self->_build_quoter; |
77d3753e |
53 | $self->{_namesep} = $self->_build_namesep; |
243c6ebc |
54 | |
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55 | # For our usage as regex matches, concatenating multiple quoter |
56 | # values works fine (e.g. s/\Q<>\E// if quoter was [ '<', '>' ]) |
57 | if( ref $self->{_quoter} eq 'ARRAY') { |
58 | $self->{_quoter} = join(q{}, @{$self->{_quoter}}); |
59 | } |
60 | |
61 | $self->_setup; |
62 | |
63 | $self; |
64 | } |
65 | |
77d3753e |
66 | sub _build_quoter { |
67 | my $self = shift; |
68 | my $dbh = $self->schema->storage->dbh; |
69 | return $dbh->get_info(29) |
70 | || $self->schema->storage->sql_maker->quote_char |
71 | || q{"}; |
72 | } |
73 | |
74 | sub _build_namesep { |
75 | my $self = shift; |
76 | my $dbh = $self->schema->storage->dbh; |
77 | return $dbh->get_info(41) |
78 | || $self->schema->storage->sql_maker->name_sep |
79 | || q{.}; |
80 | } |
81 | |
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82 | # Override this in vendor modules to do things at the end of ->new() |
83 | sub _setup { } |
84 | |
6ae3f335 |
85 | # Override this in vendor module to load a subclass if necessary |
86 | sub _rebless { } |
87 | |
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88 | # Returns an array of table names |
89 | sub _tables_list { |
bfb43060 |
90 | my ($self, $opts) = (shift, shift); |
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91 | |
e57fd726 |
92 | my ($table, $type) = @_ ? @_ : ('%', '%'); |
93 | |
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94 | my $dbh = $self->schema->storage->dbh; |
e57fd726 |
95 | my @tables = $dbh->tables(undef, $self->db_schema, $table, $type); |
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96 | |
c5ff1f26 |
97 | my $qt = qr/[\Q$self->{_quoter}\E"'`\[\]]/; |
385c593b |
98 | |
c5ff1f26 |
99 | my $all_tables_quoted = (grep /$qt/, @tables) == @tables; |
100 | |
101 | if ($self->{_quoter} && $all_tables_quoted) { |
385c593b |
102 | s/.* $qt (?= .* $qt)//xg for @tables; |
103 | } else { |
104 | s/^.*\Q$self->{_namesep}\E// for @tables; |
105 | } |
106 | s/$qt//g for @tables; |
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107 | |
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108 | return $self->_filter_tables(\@tables, $opts); |
075aff97 |
109 | } |
110 | |
bfb43060 |
111 | # apply constraint/exclude and ignore bad tables and views |
075aff97 |
112 | sub _filter_tables { |
bfb43060 |
113 | my ($self, $tables, $opts) = @_; |
075aff97 |
114 | |
bfb43060 |
115 | my @tables = @$tables; |
075aff97 |
116 | my @filtered_tables; |
117 | |
bfb43060 |
118 | $opts ||= {}; |
119 | my $constraint = $opts->{constraint}; |
120 | my $exclude = $opts->{exclude}; |
121 | |
122 | @tables = grep { /$constraint/ } @$tables if defined $constraint; |
123 | @tables = grep { ! /$exclude/ } @$tables if defined $exclude; |
124 | |
075aff97 |
125 | for my $table (@tables) { |
805dbe0a |
126 | eval { |
127 | my $sth = $self->_sth_for($table, undef, \'1 = 0'); |
128 | $sth->execute; |
129 | }; |
075aff97 |
130 | if (not $@) { |
131 | push @filtered_tables, $table; |
132 | } |
133 | else { |
134 | warn "Bad table or view '$table', ignoring: $@\n"; |
0c1d5b47 |
135 | $self->_unregister_source_for_table($table); |
075aff97 |
136 | } |
137 | } |
138 | |
139 | return @filtered_tables; |
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140 | } |
141 | |
12af3806 |
142 | =head2 load |
143 | |
144 | We override L<DBIx::Class::Schema::Loader::Base/load> here to hook in our localized settings for C<$dbh> error handling. |
145 | |
146 | =cut |
147 | |
148 | sub load { |
149 | my $self = shift; |
150 | |
151 | local $self->schema->storage->dbh->{RaiseError} = 1; |
152 | local $self->schema->storage->dbh->{PrintError} = 0; |
153 | $self->next::method(@_); |
154 | } |
155 | |
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156 | sub _table_as_sql { |
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157 | my ($self, $table) = @_; |
158 | |
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159 | if($self->{db_schema}) { |
385c593b |
160 | $table = $self->{db_schema} . $self->{_namesep} . |
161 | $self->_quote_table_name($table); |
162 | } else { |
163 | $table = $self->_quote_table_name($table); |
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164 | } |
165 | |
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166 | return $table; |
167 | } |
168 | |
169 | sub _sth_for { |
170 | my ($self, $table, $fields, $where) = @_; |
171 | |
172 | my $dbh = $self->schema->storage->dbh; |
173 | |
174 | my $sth = $dbh->prepare($self->schema->storage->sql_maker |
175 | ->select(\$self->_table_as_sql($table), $fields, $where)); |
176 | |
177 | return $sth; |
178 | } |
179 | |
180 | # Returns an arrayref of column names |
181 | sub _table_columns { |
182 | my ($self, $table) = @_; |
183 | |
184 | my $sth = $self->_sth_for($table, undef, \'1 = 0'); |
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185 | $sth->execute; |
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186 | my $retval = $self->preserve_case ? \@{$sth->{NAME}} : \@{$sth->{NAME_lc}}; |
3b7f80f9 |
187 | $sth->finish; |
188 | |
189 | $retval; |
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190 | } |
191 | |
192 | # Returns arrayref of pk col names |
193 | sub _table_pk_info { |
fd589700 |
194 | my ($self, $table) = @_; |
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195 | |
196 | my $dbh = $self->schema->storage->dbh; |
197 | |
eb040f78 |
198 | my @primary = map { $self->_lc($_) } $dbh->primary_key('', $self->db_schema, $table); |
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199 | s/\Q$self->{_quoter}\E//g for @primary; |
200 | |
201 | return \@primary; |
202 | } |
203 | |
fd589700 |
204 | # Override this for vendor-specific uniq info |
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205 | sub _table_uniq_info { |
fd589700 |
206 | my ($self, $table) = @_; |
207 | |
208 | my $dbh = $self->schema->storage->dbh; |
209 | if(!$dbh->can('statistics_info')) { |
210 | warn "No UNIQUE constraint information can be gathered for this vendor"; |
211 | return []; |
212 | } |
213 | |
214 | my %indices; |
215 | my $sth = $dbh->statistics_info(undef, $self->db_schema, $table, 1, 1); |
216 | while(my $row = $sth->fetchrow_hashref) { |
217 | # skip table-level stats, conditional indexes, and any index missing |
218 | # critical fields |
219 | next if $row->{TYPE} eq 'table' |
220 | || defined $row->{FILTER_CONDITION} |
221 | || !$row->{INDEX_NAME} |
222 | || !defined $row->{ORDINAL_POSITION} |
223 | || !$row->{COLUMN_NAME}; |
224 | |
225 | $indices{$row->{INDEX_NAME}}->{$row->{ORDINAL_POSITION}} = $row->{COLUMN_NAME}; |
226 | } |
3b7f80f9 |
227 | $sth->finish; |
fd589700 |
228 | |
229 | my @retval; |
230 | foreach my $index_name (keys %indices) { |
231 | my $index = $indices{$index_name}; |
232 | push(@retval, [ $index_name => [ |
233 | map { $index->{$_} } |
234 | sort keys %$index |
235 | ]]); |
236 | } |
237 | |
238 | return \@retval; |
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239 | } |
240 | |
241 | # Find relationships |
242 | sub _table_fk_info { |
243 | my ($self, $table) = @_; |
244 | |
245 | my $dbh = $self->schema->storage->dbh; |
a168c1c4 |
246 | my $sth = $dbh->foreign_key_info( '', $self->db_schema, '', |
247 | '', $self->db_schema, $table ); |
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248 | return [] if !$sth; |
249 | |
250 | my %rels; |
251 | |
252 | my $i = 1; # for unnamed rels, which hopefully have only 1 column ... |
253 | while(my $raw_rel = $sth->fetchrow_arrayref) { |
254 | my $uk_tbl = $raw_rel->[2]; |
c930f78b |
255 | my $uk_col = $self->_lc($raw_rel->[3]); |
256 | my $fk_col = $self->_lc($raw_rel->[7]); |
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257 | my $relid = ($raw_rel->[11] || ( "__dcsld__" . $i++ )); |
258 | $uk_tbl =~ s/\Q$self->{_quoter}\E//g; |
259 | $uk_col =~ s/\Q$self->{_quoter}\E//g; |
260 | $fk_col =~ s/\Q$self->{_quoter}\E//g; |
261 | $relid =~ s/\Q$self->{_quoter}\E//g; |
262 | $rels{$relid}->{tbl} = $uk_tbl; |
c930f78b |
263 | $rels{$relid}->{cols}{$uk_col} = $fk_col; |
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264 | } |
3b7f80f9 |
265 | $sth->finish; |
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266 | |
267 | my @rels; |
268 | foreach my $relid (keys %rels) { |
269 | push(@rels, { |
270 | remote_columns => [ keys %{$rels{$relid}->{cols}} ], |
271 | local_columns => [ values %{$rels{$relid}->{cols}} ], |
272 | remote_table => $rels{$relid}->{tbl}, |
273 | }); |
274 | } |
275 | |
276 | return \@rels; |
277 | } |
278 | |
12af3806 |
279 | # ported in from DBIx::Class::Storage::DBI: |
280 | sub _columns_info_for { |
281 | my ($self, $table) = @_; |
282 | |
283 | my $dbh = $self->schema->storage->dbh; |
284 | |
285 | if ($dbh->can('column_info')) { |
286 | my %result; |
287 | eval { |
26334ec1 |
288 | my $sth = eval { local $SIG{__WARN__} = sub {}; $dbh->column_info( undef, $self->db_schema, $table, '%' ); }; |
12af3806 |
289 | while ( my $info = $sth->fetchrow_hashref() ){ |
23d1f36b |
290 | my $column_info = {}; |
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291 | $column_info->{data_type} = lc $info->{TYPE_NAME}; |
292 | |
293 | my $size = $info->{COLUMN_SIZE}; |
294 | |
295 | if (defined $size && defined $info->{DECIMAL_DIGITS}) { |
296 | $column_info->{size} = [$size, $info->{DECIMAL_DIGITS}]; |
297 | } |
298 | elsif (defined $size) { |
299 | $column_info->{size} = $size; |
300 | } |
301 | |
23d1f36b |
302 | $column_info->{is_nullable} = $info->{NULLABLE} ? 1 : 0; |
df956aad |
303 | $column_info->{default_value} = $info->{COLUMN_DEF} if defined $info->{COLUMN_DEF}; |
12af3806 |
304 | my $col_name = $info->{COLUMN_NAME}; |
305 | $col_name =~ s/^\"(.*)\"$/$1/; |
306 | |
45be2ce7 |
307 | my $extra_info = $self->_extra_column_info( |
308 | $table, $col_name, $column_info, $info |
309 | ) || {}; |
23d1f36b |
310 | $column_info = { %$column_info, %$extra_info }; |
311 | |
23d1f36b |
312 | $result{$col_name} = $column_info; |
12af3806 |
313 | } |
3b7f80f9 |
314 | $sth->finish; |
12af3806 |
315 | }; |
316 | return \%result if !$@ && scalar keys %result; |
317 | } |
318 | |
12af3806 |
319 | my %result; |
075aff97 |
320 | my $sth = $self->_sth_for($table, undef, \'1 = 0'); |
12af3806 |
321 | $sth->execute; |
bc1cb85e |
322 | my @columns = @{ $self->preserve_case ? $sth->{NAME} : $sth->{NAME_lc} }; |
12af3806 |
323 | for my $i ( 0 .. $#columns ){ |
23d1f36b |
324 | my $column_info = {}; |
26334ec1 |
325 | $column_info->{data_type} = lc $sth->{TYPE}->[$i]; |
326 | |
327 | my $size = $sth->{PRECISION}[$i]; |
328 | |
329 | if (defined $size && defined $sth->{SCALE}[$i]) { |
330 | $column_info->{size} = [$size, $sth->{SCALE}[$i]]; |
331 | } |
332 | elsif (defined $size) { |
333 | $column_info->{size} = $size; |
334 | } |
335 | |
23d1f36b |
336 | $column_info->{is_nullable} = $sth->{NULLABLE}->[$i] ? 1 : 0; |
337 | |
338 | if ($column_info->{data_type} =~ m/^(.*?)\((.*?)\)$/) { |
339 | $column_info->{data_type} = $1; |
340 | $column_info->{size} = $2; |
12af3806 |
341 | } |
342 | |
45be2ce7 |
343 | my $extra_info = $self->_extra_column_info($table, $columns[$i], $column_info) || {}; |
23d1f36b |
344 | $column_info = { %$column_info, %$extra_info }; |
345 | |
23d1f36b |
346 | $result{$columns[$i]} = $column_info; |
12af3806 |
347 | } |
6ce0bcc3 |
348 | $sth->finish; |
349 | |
350 | foreach my $col (keys %result) { |
351 | my $colinfo = $result{$col}; |
352 | my $type_num = $colinfo->{data_type}; |
353 | my $type_name; |
4145a6f3 |
354 | if(defined $type_num && $type_num =~ /^\d+\z/ && $dbh->can('type_info')) { |
6ce0bcc3 |
355 | my $type_info = $dbh->type_info($type_num); |
356 | $type_name = $type_info->{TYPE_NAME} if $type_info; |
cf0ba25b |
357 | $colinfo->{data_type} = lc $type_name if $type_name; |
6ce0bcc3 |
358 | } |
359 | } |
12af3806 |
360 | |
361 | return \%result; |
362 | } |
363 | |
a8df0345 |
364 | # Override this in vendor class to return any additional column |
365 | # attributes |
366 | sub _extra_column_info {} |
c5baf131 |
367 | |
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368 | =head1 SEE ALSO |
369 | |
370 | L<DBIx::Class::Schema::Loader> |
371 | |
be80bba7 |
372 | =head1 AUTHOR |
373 | |
9cc8e7e1 |
374 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
be80bba7 |
375 | |
376 | =head1 LICENSE |
377 | |
378 | This library is free software; you can redistribute it and/or modify it under |
379 | the same terms as Perl itself. |
380 | |
996be9ee |
381 | =cut |
382 | |
383 | 1; |
26334ec1 |
384 | # vim:et sts=4 sw=4 tw=0: |