Merge 'trunk' into 'DBIx-Class-current'
[dbsrgits/DBIx-Class-Historic.git] / lib / DBIx / Class / Storage / DBI.pm
CommitLineData
8b445e33 1package DBIx::Class::Storage::DBI;
2
a62cf8d4 3use base 'DBIx::Class::Storage';
4
20a2c954 5use strict;
6use warnings;
8b445e33 7use DBI;
aeaf3ce2 8use SQL::Abstract::Limit;
28927b50 9use DBIx::Class::Storage::DBI::Cursor;
92b858c9 10use IO::File;
701da8c4 11use Carp::Clan qw/DBIx::Class/;
8b445e33 12
bd7efd39 13BEGIN {
14
cb5f2eea 15package DBIC::SQL::Abstract; # Would merge upstream, but nate doesn't reply :(
bd7efd39 16
17use base qw/SQL::Abstract::Limit/;
18
54540863 19sub select {
20 my ($self, $table, $fields, $where, $order, @rest) = @_;
6346a152 21 $table = $self->_quote($table) unless ref($table);
54540863 22 @rest = (-1) unless defined $rest[0];
8839560b 23 local $self->{having_bind} = [];
bc0c9800 24 my ($sql, @ret) = $self->SUPER::select(
25 $table, $self->_recurse_fields($fields), $where, $order, @rest
26 );
8839560b 27 return wantarray ? ($sql, @ret, @{$self->{having_bind}}) : $sql;
54540863 28}
29
6346a152 30sub insert {
31 my $self = shift;
32 my $table = shift;
33 $table = $self->_quote($table) unless ref($table);
34 $self->SUPER::insert($table, @_);
35}
36
37sub update {
38 my $self = shift;
39 my $table = shift;
40 $table = $self->_quote($table) unless ref($table);
41 $self->SUPER::update($table, @_);
42}
43
44sub delete {
45 my $self = shift;
46 my $table = shift;
47 $table = $self->_quote($table) unless ref($table);
48 $self->SUPER::delete($table, @_);
49}
50
54540863 51sub _emulate_limit {
52 my $self = shift;
53 if ($_[3] == -1) {
54 return $_[1].$self->_order_by($_[2]);
55 } else {
56 return $self->SUPER::_emulate_limit(@_);
57 }
58}
59
60sub _recurse_fields {
61 my ($self, $fields) = @_;
62 my $ref = ref $fields;
63 return $self->_quote($fields) unless $ref;
64 return $$fields if $ref eq 'SCALAR';
65
66 if ($ref eq 'ARRAY') {
67 return join(', ', map { $self->_recurse_fields($_) } @$fields);
68 } elsif ($ref eq 'HASH') {
69 foreach my $func (keys %$fields) {
70 return $self->_sqlcase($func)
71 .'( '.$self->_recurse_fields($fields->{$func}).' )';
72 }
73 }
74}
75
76sub _order_by {
77 my $self = shift;
78 my $ret = '';
8839560b 79 my @extra;
54540863 80 if (ref $_[0] eq 'HASH') {
81 if (defined $_[0]->{group_by}) {
82 $ret = $self->_sqlcase(' group by ')
83 .$self->_recurse_fields($_[0]->{group_by});
84 }
8839560b 85 if (defined $_[0]->{having}) {
86 my $frag;
87 ($frag, @extra) = $self->_recurse_where($_[0]->{having});
88 push(@{$self->{having_bind}}, @extra);
89 $ret .= $self->_sqlcase(' having ').$frag;
90 }
54540863 91 if (defined $_[0]->{order_by}) {
92 $ret .= $self->SUPER::_order_by($_[0]->{order_by});
93 }
e535069e 94 } elsif(ref $_[0] eq 'SCALAR') {
95 $ret = $self->_sqlcase(' order by ').${ $_[0] };
54540863 96 } else {
97 $ret = $self->SUPER::_order_by(@_);
98 }
99 return $ret;
100}
101
f48dd03f 102sub _order_directions {
103 my ($self, $order) = @_;
104 $order = $order->{order_by} if ref $order eq 'HASH';
105 return $self->SUPER::_order_directions($order);
106}
107
2a816814 108sub _table {
bd7efd39 109 my ($self, $from) = @_;
110 if (ref $from eq 'ARRAY') {
111 return $self->_recurse_from(@$from);
112 } elsif (ref $from eq 'HASH') {
113 return $self->_make_as($from);
114 } else {
6346a152 115 return $from; # would love to quote here but _table ends up getting called
116 # twice during an ->select without a limit clause due to
117 # the way S::A::Limit->select works. should maybe consider
118 # bypassing this and doing S::A::select($self, ...) in
119 # our select method above. meantime, quoting shims have
120 # been added to select/insert/update/delete here
bd7efd39 121 }
122}
123
124sub _recurse_from {
125 my ($self, $from, @join) = @_;
126 my @sqlf;
127 push(@sqlf, $self->_make_as($from));
128 foreach my $j (@join) {
129 my ($to, $on) = @$j;
73856587 130
54540863 131 # check whether a join type exists
132 my $join_clause = '';
133 if (ref($to) eq 'HASH' and exists($to->{-join_type})) {
134 $join_clause = ' '.uc($to->{-join_type}).' JOIN ';
135 } else {
136 $join_clause = ' JOIN ';
137 }
73856587 138 push(@sqlf, $join_clause);
139
bd7efd39 140 if (ref $to eq 'ARRAY') {
141 push(@sqlf, '(', $self->_recurse_from(@$to), ')');
142 } else {
96cdbbab 143 push(@sqlf, $self->_make_as($to));
bd7efd39 144 }
145 push(@sqlf, ' ON ', $self->_join_condition($on));
146 }
147 return join('', @sqlf);
148}
149
150sub _make_as {
151 my ($self, $from) = @_;
54540863 152 return join(' ', map { (ref $_ eq 'SCALAR' ? $$_ : $self->_quote($_)) }
bc0c9800 153 reverse each %{$self->_skip_options($from)});
73856587 154}
155
156sub _skip_options {
54540863 157 my ($self, $hash) = @_;
158 my $clean_hash = {};
159 $clean_hash->{$_} = $hash->{$_}
160 for grep {!/^-/} keys %$hash;
161 return $clean_hash;
bd7efd39 162}
163
164sub _join_condition {
165 my ($self, $cond) = @_;
5efe4c79 166 if (ref $cond eq 'HASH') {
167 my %j;
bc0c9800 168 for (keys %$cond) {
169 my $x = '= '.$self->_quote($cond->{$_}); $j{$_} = \$x;
170 };
5efe4c79 171 return $self->_recurse_where(\%j);
172 } elsif (ref $cond eq 'ARRAY') {
173 return join(' OR ', map { $self->_join_condition($_) } @$cond);
174 } else {
175 die "Can't handle this yet!";
176 }
bd7efd39 177}
178
2a816814 179sub _quote {
180 my ($self, $label) = @_;
181 return '' unless defined $label;
3b24f6ea 182 return "*" if $label eq '*';
41728a6e 183 return $label unless $self->{quote_char};
3b24f6ea 184 if(ref $self->{quote_char} eq "ARRAY"){
185 return $self->{quote_char}->[0] . $label . $self->{quote_char}->[1]
186 if !defined $self->{name_sep};
187 my $sep = $self->{name_sep};
188 return join($self->{name_sep},
189 map { $self->{quote_char}->[0] . $_ . $self->{quote_char}->[1] }
190 split(/\Q$sep\E/,$label));
191 }
2a816814 192 return $self->SUPER::_quote($label);
193}
194
f66596f9 195sub _RowNum {
196 my $self = shift;
197 my $c;
198 $_[0] =~ s/SELECT (.*?) FROM/
199 'SELECT '.join(', ', map { $_.' AS col'.++$c } split(', ', $1)).' FROM'/e;
200 $self->SUPER::_RowNum(@_);
201}
202
7be93b07 203# Accessor for setting limit dialect. This is useful
204# for JDBC-bridge among others where the remote SQL-dialect cannot
205# be determined by the name of the driver alone.
206#
207sub limit_dialect {
208 my $self = shift;
209 $self->{limit_dialect} = shift if @_;
210 return $self->{limit_dialect};
211}
212
2437a1e3 213sub quote_char {
214 my $self = shift;
215 $self->{quote_char} = shift if @_;
216 return $self->{quote_char};
217}
218
219sub name_sep {
220 my $self = shift;
221 $self->{name_sep} = shift if @_;
222 return $self->{name_sep};
223}
224
225
226
227
486ad69b 228package DBIx::Class::Storage::DBI::DebugCallback;
229
230sub print {
231 my ($self, $string) = @_;
232 $string =~ m/^(\w+)/;
233 ${$self}->($1, $string);
234}
235
bd7efd39 236} # End of BEGIN block
237
8b445e33 238use base qw/DBIx::Class/;
239
1f692767 240__PACKAGE__->load_components(qw/AccessorGroup/);
8b445e33 241
223b8fe3 242__PACKAGE__->mk_group_accessors('simple' =>
1b45b01e 243 qw/_connect_info _dbh _sql_maker _conn_pid _conn_tid debug debugfh
1346e22d 244 cursor on_connect_do transaction_depth/);
8091aa91 245
8b445e33 246sub new {
223b8fe3 247 my $new = bless({}, ref $_[0] || $_[0]);
28927b50 248 $new->cursor("DBIx::Class::Storage::DBI::Cursor");
d79f59b9 249 $new->transaction_depth(0);
5e65c358 250 if (defined($ENV{DBIX_CLASS_STORAGE_DBI_DEBUG}) &&
251 ($ENV{DBIX_CLASS_STORAGE_DBI_DEBUG} =~ /=(.+)$/)) {
bc0c9800 252 $new->debugfh(IO::File->new($1, 'w'))
253 or $new->throw_exception("Cannot open trace file $1");
92b858c9 254 } else {
255 $new->debugfh(IO::File->new('>&STDERR'));
256 }
28927b50 257 $new->debug(1) if $ENV{DBIX_CLASS_STORAGE_DBI_DEBUG};
223b8fe3 258 return $new;
8b445e33 259}
260
1c339d71 261sub throw_exception {
262 my ($self, $msg) = @_;
3b042bcb 263 croak($msg);
1c339d71 264}
265
75d07914 266=head1 NAME
8b445e33 267
268DBIx::Class::Storage::DBI - DBI storage handler
269
270=head1 SYNOPSIS
271
272=head1 DESCRIPTION
273
274This class represents the connection to the database
275
276=head1 METHODS
277
8b445e33 278=cut
279
1b45b01e 280=head2 connect_info
281
282Connection information arrayref. Can either be the same arguments
283one would pass to DBI->connect, or a code-reference which returns
284a connected database handle. In either case, there is an optional
285final element in the arrayref, which can hold a hashref of
286connection-specific Storage::DBI options. These include
287C<on_connect_do>, and the sql_maker options C<limit_dialect>,
288C<quote_char>, and C<name_sep>. Examples:
289
290 ->connect_info([ 'dbi:SQLite:./foo.db' ]);
291 ->connect_info(sub { DBI->connect(...) });
292 ->connect_info([ 'dbi:Pg:dbname=foo',
293 'postgres',
294 '',
295 { AutoCommit => 0 },
296 { quote_char => q{`}, name_sep => q{@} },
297 ]);
298
d7c4c15c 299=head2 on_connect_do
300
301Executes the sql statements given as a listref on every db connect.
302
92b858c9 303=head2 debug
304
305Causes SQL trace information to be emitted on C<debugfh> filehandle
306(or C<STDERR> if C<debugfh> has not specifically been set).
307
308=head2 debugfh
309
310Sets or retrieves the filehandle used for trace/debug output. This
311should be an IO::Handle compatible object (only the C<print> method is
312used). Initially set to be STDERR - although see information on the
313L<DBIX_CLASS_STORAGE_DBI_DEBUG> environment variable.
314
486ad69b 315=head2 debugcb
316
317Sets a callback to be executed each time a statement is run; takes a sub
318reference. Overrides debugfh. Callback is executed as $sub->($op, $info)
319where $op is SELECT/INSERT/UPDATE/DELETE and $info is what would normally
320be printed.
321
d7c4c15c 322=cut
323
486ad69b 324sub debugcb {
325 my ($self, $cb) = @_;
326 my $cb_obj = bless(\$cb, 'DBIx::Class::Storage::DBI::DebugCallback');
327 $self->debugfh($cb_obj);
328}
329
412db1f4 330sub disconnect {
331 my ($self) = @_;
332
92925617 333 if( $self->connected ) {
334 $self->_dbh->rollback unless $self->_dbh->{AutoCommit};
335 $self->_dbh->disconnect;
336 $self->_dbh(undef);
337 }
412db1f4 338}
339
340sub connected {
8b445e33 341 my ($self) = @_;
412db1f4 342
1346e22d 343 if(my $dbh = $self->_dbh) {
344 if(defined $self->_conn_tid && $self->_conn_tid != threads->tid) {
345 $self->_sql_maker(undef);
346 return $self->_dbh(undef);
347 }
348 elsif($self->_conn_pid != $$) {
349 $self->_dbh->{InactiveDestroy} = 1;
350 $self->_sql_maker(undef);
351 return $self->_dbh(undef)
352 }
353 return ($dbh->FETCH('Active') && $dbh->ping);
354 }
355
356 return 0;
412db1f4 357}
358
359sub ensure_connected {
360 my ($self) = @_;
361
362 unless ($self->connected) {
8b445e33 363 $self->_populate_dbh;
364 }
412db1f4 365}
366
367sub dbh {
368 my ($self) = @_;
369
370 $self->ensure_connected;
8b445e33 371 return $self->_dbh;
372}
373
48c69e7c 374sub sql_maker {
375 my ($self) = @_;
fdc1c3d0 376 unless ($self->_sql_maker) {
bd7efd39 377 $self->_sql_maker(new DBIC::SQL::Abstract( limit_dialect => $self->dbh ));
48c69e7c 378 }
379 return $self->_sql_maker;
380}
381
1b45b01e 382sub connect_info {
383 my ($self, $info_arg) = @_;
384
385 if($info_arg) {
386 my $info = [ @$info_arg ]; # copy because we can alter it
387 my $last_info = $info->[-1];
388 if(ref $last_info eq 'HASH') {
389 my $used;
390 if(my $on_connect_do = $last_info->{on_connect_do}) {
391 $used = 1;
67008979 392 $self->on_connect_do($on_connect_do);
1b45b01e 393 }
67008979 394 for my $sql_maker_opt (qw/limit_dialect quote_char name_sep/) {
1b45b01e 395 if(my $opt_val = $last_info->{$sql_maker_opt}) {
396 $used = 1;
397 $self->sql_maker->$sql_maker_opt($opt_val);
398 }
399 }
400
401 # remove our options hashref if it was there, to avoid confusing
402 # DBI in the case the user didn't use all 4 DBI options, as in:
403 # [ 'dbi:SQLite:foo.db', { quote_char => q{`} } ]
404 pop(@$info) if $used;
405 }
406
407 $self->_connect_info($info);
408 }
409
410 $self->_connect_info;
411}
412
8b445e33 413sub _populate_dbh {
414 my ($self) = @_;
1b45b01e 415 my @info = @{$self->_connect_info || []};
8b445e33 416 $self->_dbh($self->_connect(@info));
843f8ecd 417 my $driver = $self->_dbh->{Driver}->{Name};
34470972 418 eval "require DBIx::Class::Storage::DBI::${driver}";
419 unless ($@) {
843f8ecd 420 bless $self, "DBIx::Class::Storage::DBI::${driver}";
421 }
d7c4c15c 422 # if on-connect sql statements are given execute them
423 foreach my $sql_statement (@{$self->on_connect_do || []}) {
424 $self->_dbh->do($sql_statement);
425 }
5ef3e508 426
1346e22d 427 $self->_conn_pid($$);
428 $self->_conn_tid(threads->tid) if $INC{'threads.pm'};
8b445e33 429}
430
431sub _connect {
432 my ($self, @info) = @_;
5ef3e508 433
9d31f7dc 434 $self->throw_exception("You failed to provide any connection info")
435 if !@info;
436
90ec6cad 437 my ($old_connect_via, $dbh);
438
5ef3e508 439 if ($INC{'Apache/DBI.pm'} && $ENV{MOD_PERL}) {
90ec6cad 440 $old_connect_via = $DBI::connect_via;
5ef3e508 441 $DBI::connect_via = 'connect';
5ef3e508 442 }
443
75db246c 444 eval {
445 if(ref $info[0] eq 'CODE') {
446 $dbh = &{$info[0]};
447 }
448 else {
449 $dbh = DBI->connect(@info);
450 }
451 };
90ec6cad 452
453 $DBI::connect_via = $old_connect_via if $old_connect_via;
454
75db246c 455 if (!$dbh || $@) {
456 $self->throw_exception("DBI Connection failed: " . ($@ || $DBI::errstr));
457 }
90ec6cad 458
e571e823 459 $dbh;
8b445e33 460}
461
8091aa91 462=head2 txn_begin
8b445e33 463
8091aa91 464Calls begin_work on the current dbh.
8b445e33 465
181a28f4 466See L<DBIx::Class::Schema> for the txn_do() method, which allows for
467an entire code block to be executed transactionally.
468
8b445e33 469=cut
470
8091aa91 471sub txn_begin {
d79f59b9 472 my $self = shift;
986e4fca 473 if (($self->{transaction_depth}++ == 0) and ($self->dbh->{AutoCommit})) {
474 $self->debugfh->print("BEGIN WORK\n")
475 if ($self->debug);
476 $self->dbh->begin_work;
477 }
8091aa91 478}
8b445e33 479
8091aa91 480=head2 txn_commit
8b445e33 481
8091aa91 482Issues a commit against the current dbh.
8b445e33 483
8091aa91 484=cut
485
486sub txn_commit {
d79f59b9 487 my $self = shift;
488 if ($self->{transaction_depth} == 0) {
986e4fca 489 unless ($self->dbh->{AutoCommit}) {
490 $self->debugfh->print("COMMIT\n")
491 if ($self->debug);
492 $self->dbh->commit;
493 }
8091aa91 494 }
495 else {
986e4fca 496 if (--$self->{transaction_depth} == 0) {
497 $self->debugfh->print("COMMIT\n")
498 if ($self->debug);
499 $self->dbh->commit;
500 }
8091aa91 501 }
502}
503
504=head2 txn_rollback
505
181a28f4 506Issues a rollback against the current dbh. A nested rollback will
507throw a L<DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION> exception,
508which allows the rollback to propagate to the outermost transaction.
8b445e33 509
510=cut
511
8091aa91 512sub txn_rollback {
d79f59b9 513 my $self = shift;
a62cf8d4 514
515 eval {
516 if ($self->{transaction_depth} == 0) {
986e4fca 517 unless ($self->dbh->{AutoCommit}) {
518 $self->debugfh->print("ROLLBACK\n")
519 if ($self->debug);
520 $self->dbh->rollback;
521 }
a62cf8d4 522 }
523 else {
986e4fca 524 if (--$self->{transaction_depth} == 0) {
525 $self->debugfh->print("ROLLBACK\n")
526 if ($self->debug);
527 $self->dbh->rollback;
528 }
529 else {
1346e22d 530 die DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION->new;
986e4fca 531 }
a62cf8d4 532 }
533 };
534
535 if ($@) {
536 my $error = $@;
537 my $exception_class = "DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION";
538 $error =~ /$exception_class/ and $self->throw_exception($error);
539 $self->{transaction_depth} = 0; # ensure that a failed rollback
540 $self->throw_exception($error); # resets the transaction depth
8091aa91 541 }
542}
8b445e33 543
223b8fe3 544sub _execute {
545 my ($self, $op, $extra_bind, $ident, @args) = @_;
546 my ($sql, @bind) = $self->sql_maker->$op($ident, @args);
944f30bf 547 unshift(@bind, @$extra_bind) if $extra_bind;
f59ffc79 548 if ($self->debug) {
181a28f4 549 my @debug_bind = map { defined $_ ? qq{`$_'} : q{`NULL'} } @bind;
550 $self->debugfh->print("$sql: " . join(', ', @debug_bind) . "\n");
f59ffc79 551 }
75db246c 552 my $sth = eval { $self->sth($sql,$op) };
553
554 if (!$sth || $@) {
555 $self->throw_exception('no sth generated via sql (' . ($@ || $self->_dbh->errstr) . "): $sql");
556 }
557
438adc0e 558 @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
701da8c4 559 my $rv;
75d07914 560 if ($sth) {
95dad7e2 561 $rv = eval { $sth->execute(@bind) };
562
563 if ($@ || !$rv) {
564 $self->throw_exception("Error executing '$sql': ".($@ || $sth->errstr));
565 }
75d07914 566 } else {
1c339d71 567 $self->throw_exception("'$sql' did not generate a statement.");
701da8c4 568 }
223b8fe3 569 return (wantarray ? ($rv, $sth, @bind) : $rv);
570}
571
8b445e33 572sub insert {
573 my ($self, $ident, $to_insert) = @_;
bc0c9800 574 $self->throw_exception(
575 "Couldn't insert ".join(', ',
576 map "$_ => $to_insert->{$_}", keys %$to_insert
577 )." into ${ident}"
578 ) unless ($self->_execute('insert' => [], $ident, $to_insert));
8b445e33 579 return $to_insert;
580}
581
582sub update {
223b8fe3 583 return shift->_execute('update' => [], @_);
8b445e33 584}
585
586sub delete {
223b8fe3 587 return shift->_execute('delete' => [], @_);
8b445e33 588}
589
de705b51 590sub _select {
8b445e33 591 my ($self, $ident, $select, $condition, $attrs) = @_;
223b8fe3 592 my $order = $attrs->{order_by};
593 if (ref $condition eq 'SCALAR') {
594 $order = $1 if $$condition =~ s/ORDER BY (.*)$//i;
595 }
8839560b 596 if (exists $attrs->{group_by} || $attrs->{having}) {
bc0c9800 597 $order = {
598 group_by => $attrs->{group_by},
599 having => $attrs->{having},
600 ($order ? (order_by => $order) : ())
601 };
54540863 602 }
5c91499f 603 my @args = ('select', $attrs->{bind}, $ident, $select, $condition, $order);
9229f20a 604 if ($attrs->{software_limit} ||
605 $self->sql_maker->_default_limit_syntax eq "GenericSubQ") {
606 $attrs->{software_limit} = 1;
5c91499f 607 } else {
608 push @args, $attrs->{rows}, $attrs->{offset};
609 }
de705b51 610 return $self->_execute(@args);
611}
612
613sub select {
614 my $self = shift;
615 my ($ident, $select, $condition, $attrs) = @_;
cb5f2eea 616 return $self->cursor->new($self, \@_, $attrs);
8b445e33 617}
618
6157db4f 619# Need to call finish() to work round broken DBDs
620
1a14aa3f 621sub select_single {
de705b51 622 my $self = shift;
623 my ($rv, $sth, @bind) = $self->_select(@_);
6157db4f 624 my @row = $sth->fetchrow_array;
625 $sth->finish();
626 return @row;
1a14aa3f 627}
628
8b445e33 629sub sth {
cb5f2eea 630 my ($self, $sql) = @_;
91fa659e 631 # 3 is the if_active parameter which avoids active sth re-use
632 return $self->dbh->prepare_cached($sql, {}, 3);
8b445e33 633}
634
a953d8d9 635=head2 columns_info_for
636
637Returns database type info for a given table columns.
638
639=cut
640
641sub columns_info_for {
0d67fe74 642 my ($self, $table) = @_;
bfe10d87 643
0d67fe74 644 if ($self->dbh->can('column_info')) {
a953d8d9 645 my %result;
0d67fe74 646 my $old_raise_err = $self->dbh->{RaiseError};
647 my $old_print_err = $self->dbh->{PrintError};
648 $self->dbh->{RaiseError} = 1;
649 $self->dbh->{PrintError} = 0;
650 eval {
651 my $sth = $self->dbh->column_info( undef, undef, $table, '%' );
652 $sth->execute();
653 while ( my $info = $sth->fetchrow_hashref() ){
bfe10d87 654 my %column_info;
0d67fe74 655 $column_info{data_type} = $info->{TYPE_NAME};
656 $column_info{size} = $info->{COLUMN_SIZE};
657 $column_info{is_nullable} = $info->{NULLABLE} ? 1 : 0;
658 $column_info{default_value} = $info->{COLUMN_DEF};
659
660 $result{$info->{COLUMN_NAME}} = \%column_info;
661 }
662 };
663 $self->dbh->{RaiseError} = $old_raise_err;
664 $self->dbh->{PrintError} = $old_print_err;
665 return \%result if !$@;
666 }
667
668 my %result;
669 my $sth = $self->dbh->prepare("SELECT * FROM $table WHERE 1=0");
670 $sth->execute;
671 my @columns = @{$sth->{NAME_lc}};
672 for my $i ( 0 .. $#columns ){
673 my %column_info;
674 my $type_num = $sth->{TYPE}->[$i];
675 my $type_name;
676 if(defined $type_num && $self->dbh->can('type_info')) {
677 my $type_info = $self->dbh->type_info($type_num);
678 $type_name = $type_info->{TYPE_NAME} if $type_info;
a953d8d9 679 }
0d67fe74 680 $column_info{data_type} = $type_name ? $type_name : $type_num;
681 $column_info{size} = $sth->{PRECISION}->[$i];
682 $column_info{is_nullable} = $sth->{NULLABLE}->[$i] ? 1 : 0;
683
684 if ($column_info{data_type} =~ m/^(.*?)\((.*?)\)$/) {
685 $column_info{data_type} = $1;
686 $column_info{size} = $2;
687 }
688
689 $result{$columns[$i]} = \%column_info;
690 }
bfe10d87 691
0d67fe74 692 return \%result;
a953d8d9 693}
694
843f8ecd 695sub last_insert_id {
696 my ($self, $row) = @_;
697
698 return $self->dbh->func('last_insert_rowid');
699
700}
701
90ec6cad 702sub sqlt_type { shift->dbh->{Driver}->{Name} }
1c339d71 703
704sub deployment_statements {
cb561d1a 705 my ($self, $schema, $type, $sqltargs) = @_;
1c339d71 706 $type ||= $self->sqlt_type;
707 eval "use SQL::Translator";
708 $self->throw_exception("Can't deploy without SQL::Translator: $@") if $@;
709 eval "use SQL::Translator::Parser::DBIx::Class;";
75d07914 710 $self->throw_exception($@) if $@;
1c339d71 711 eval "use SQL::Translator::Producer::${type};";
712 $self->throw_exception($@) if $@;
cb561d1a 713 my $tr = SQL::Translator->new(%$sqltargs);
1c339d71 714 SQL::Translator::Parser::DBIx::Class::parse( $tr, $schema );
715 return "SQL::Translator::Producer::${type}"->can('produce')->($tr);
716}
843f8ecd 717
1c339d71 718sub deploy {
cb561d1a 719 my ($self, $schema, $type, $sqltargs) = @_;
e4fe9ba3 720 foreach my $statement ( $self->deployment_statements($schema, $type, $sqltargs) ) {
721 for ( split(";\n", $statement)) {
722 $self->debugfh->print("$_\n") if $self->debug;
723 $self->dbh->do($_) or warn "SQL was:\n $_";
724 }
75d07914 725 }
1c339d71 726}
843f8ecd 727
92925617 728sub DESTROY { shift->disconnect }
729
8b445e33 7301;
731
92b858c9 732=head1 ENVIRONMENT VARIABLES
733
734=head2 DBIX_CLASS_STORAGE_DBI_DEBUG
735
736If C<DBIX_CLASS_STORAGE_DBI_DEBUG> is set then SQL trace information
737is produced (as when the L<debug> method is set).
738
739If the value is of the form C<1=/path/name> then the trace output is
740written to the file C</path/name>.
741
8b445e33 742=head1 AUTHORS
743
daec44b8 744Matt S. Trout <mst@shadowcatsystems.co.uk>
8b445e33 745
9f19b1d6 746Andy Grundman <andy@hybridized.org>
747
8b445e33 748=head1 LICENSE
749
750You may distribute this code under the same terms as Perl itself.
751
752=cut
753