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843f8ecd |
1 | package DBIx::Class::Storage::DBI::Pg; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | |
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6 | use DBD::Pg qw(:pg_types); |
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7 | |
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8 | use base qw/DBIx::Class::Storage::DBI/; |
9 | |
10 | # __PACKAGE__->load_components(qw/PK::Auto/); |
11 | |
17614944 |
12 | # Warn about problematic versions of DBD::Pg |
13 | warn "DBD::Pg 1.49 is strongly recommended" |
14 | if ($DBD::Pg::VERSION < 1.49); |
15 | |
e96a93df |
16 | sub with_deferred_fk_checks { |
17 | my ($self, $sub) = @_; |
18 | |
19 | $self->dbh->do('SET CONSTRAINTS ALL DEFERRED'); |
20 | $sub->(); |
21 | } |
22 | |
d4f16b21 |
23 | sub _dbh_last_insert_id { |
24 | my ($self, $dbh, $seq) = @_; |
25 | $dbh->last_insert_id(undef, undef, undef, undef, {sequence => $seq}); |
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26 | } |
27 | |
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28 | sub last_insert_id { |
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29 | my ($self,$source,$col) = @_; |
30 | my $seq = ($source->column_info($col)->{sequence} ||= $self->get_autoinc_seq($source,$col)); |
d12926f6 |
31 | $self->throw_exception("could not fetch primary key for " . $source->name . ", could not " |
32 | . "get autoinc sequence for $col (check that table and column specifications are correct " |
33 | . "and in the correct case)") unless defined $seq; |
373940e1 |
34 | $self->dbh_do('_dbh_last_insert_id', $seq); |
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35 | } |
36 | |
d4f16b21 |
37 | sub _dbh_get_autoinc_seq { |
38 | my ($self, $dbh, $schema, $table, @pri) = @_; |
0680ac39 |
39 | |
40 | while (my $col = shift @pri) { |
41 | my $info = $dbh->column_info(undef,$schema,$table,$col)->fetchrow_hashref; |
42 | if(defined $info->{COLUMN_DEF} and |
43 | $info->{COLUMN_DEF} =~ /^nextval\(+'([^']+)'::(?:text|regclass)\)/) { |
44 | my $seq = $1; |
45 | # may need to strip quotes -- see if this works |
46 | return $seq =~ /\./ ? $seq : $info->{TABLE_SCHEM} . "." . $seq; |
47 | } |
48 | } |
49 | return; |
843f8ecd |
50 | } |
51 | |
52 | sub get_autoinc_seq { |
ca48cd7d |
53 | my ($self,$source,$col) = @_; |
54 | |
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55 | my @pri = $source->primary_columns; |
34470972 |
56 | my ($schema,$table) = $source->name =~ /^(.+)\.(.+)$/ ? ($1,$2) |
57 | : (undef,$source->name); |
a9f32dbc |
58 | |
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59 | $self->dbh_do('_dbh_get_autoinc_seq', $schema, $table, @pri); |
843f8ecd |
60 | } |
61 | |
4f533e8c |
62 | sub sqlt_type { |
63 | return 'PostgreSQL'; |
64 | } |
65 | |
45fa8288 |
66 | sub datetime_parser_type { return "DateTime::Format::Pg"; } |
67 | |
a71859b4 |
68 | sub bind_attribute_by_data_type { |
69 | my ($self,$data_type) = @_; |
70 | |
71 | my $bind_attributes = { |
eda28767 |
72 | bytea => { pg_type => DBD::Pg::PG_BYTEA }, |
5ba88f68 |
73 | blob => { pg_type => DBD::Pg::PG_BYTEA }, |
a71859b4 |
74 | }; |
75 | |
76 | if( defined $bind_attributes->{$data_type} ) { |
9fdf90df |
77 | return $bind_attributes->{$data_type}; |
a71859b4 |
78 | } |
79 | else { |
80 | return; |
81 | } |
82 | } |
83 | |
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84 | sub _sequence_fetch { |
85 | my ( $self, $type, $seq ) = @_; |
86 | my ($id) = $self->dbh->selectrow_array("SELECT nextval('${seq}')"); |
87 | return $id; |
88 | } |
89 | |
adb3554a |
90 | sub _svp_begin { |
eeb8cfeb |
91 | my ($self, $name) = @_; |
adb3554a |
92 | |
eeb8cfeb |
93 | $self->dbh->pg_savepoint($name); |
adb3554a |
94 | } |
95 | |
96 | sub _svp_release { |
eeb8cfeb |
97 | my ($self, $name) = @_; |
adb3554a |
98 | |
d6feb60f |
99 | $self->dbh->pg_release($name); |
adb3554a |
100 | } |
101 | |
102 | sub _svp_rollback { |
eeb8cfeb |
103 | my ($self, $name) = @_; |
adb3554a |
104 | |
eeb8cfeb |
105 | $self->dbh->pg_rollback_to($name); |
adb3554a |
106 | } |
107 | |
843f8ecd |
108 | 1; |
109 | |
75d07914 |
110 | =head1 NAME |
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111 | |
112 | DBIx::Class::Storage::DBI::Pg - Automatic primary key class for PostgreSQL |
113 | |
114 | =head1 SYNOPSIS |
115 | |
116 | # In your table classes |
117 | __PACKAGE__->load_components(qw/PK::Auto Core/); |
118 | __PACKAGE__->set_primary_key('id'); |
119 | __PACKAGE__->sequence('mysequence'); |
120 | |
121 | =head1 DESCRIPTION |
122 | |
123 | This class implements autoincrements for PostgreSQL. |
124 | |
125 | =head1 AUTHORS |
126 | |
127 | Marcus Ramberg <m.ramberg@cpan.org> |
128 | |
129 | =head1 LICENSE |
130 | |
131 | You may distribute this code under the same terms as Perl itself. |
132 | |
133 | =cut |