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843f8ecd |
1 | package DBIx::Class::Storage::DBI::Pg; |
2 | |
3 | use strict; |
4 | use warnings; |
5 | |
4ce3b851 |
6 | use base qw/DBIx::Class::Storage::DBI::MultiColumnIn/; |
ac45262b |
7 | use mro 'c3'; |
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8 | |
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9 | use DBD::Pg qw(:pg_types); |
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10 | |
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11 | # Ask for a DBD::Pg with array support |
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12 | warn "DBD::Pg 2.9.2 or greater is strongly recommended\n" |
ac45262b |
13 | if ($DBD::Pg::VERSION < 2.009002); # pg uses (used?) version::qv() |
17614944 |
14 | |
e96a93df |
15 | sub with_deferred_fk_checks { |
16 | my ($self, $sub) = @_; |
17 | |
18 | $self->dbh->do('SET CONSTRAINTS ALL DEFERRED'); |
19 | $sub->(); |
20 | } |
21 | |
d4f16b21 |
22 | sub _dbh_last_insert_id { |
23 | my ($self, $dbh, $seq) = @_; |
24 | $dbh->last_insert_id(undef, undef, undef, undef, {sequence => $seq}); |
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25 | } |
26 | |
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27 | sub last_insert_id { |
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28 | my ($self,$source,$col) = @_; |
29 | my $seq = ($source->column_info($col)->{sequence} ||= $self->get_autoinc_seq($source,$col)); |
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30 | $self->throw_exception("could not fetch primary key for " . $source->name . ", could not " |
31 | . "get autoinc sequence for $col (check that table and column specifications are correct " |
32 | . "and in the correct case)") unless defined $seq; |
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33 | $self->dbh_do('_dbh_last_insert_id', $seq); |
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34 | } |
35 | |
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36 | sub _dbh_get_autoinc_seq { |
37 | my ($self, $dbh, $schema, $table, @pri) = @_; |
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38 | |
39 | while (my $col = shift @pri) { |
40 | my $info = $dbh->column_info(undef,$schema,$table,$col)->fetchrow_hashref; |
41 | if(defined $info->{COLUMN_DEF} and |
42 | $info->{COLUMN_DEF} =~ /^nextval\(+'([^']+)'::(?:text|regclass)\)/) { |
43 | my $seq = $1; |
44 | # may need to strip quotes -- see if this works |
45 | return $seq =~ /\./ ? $seq : $info->{TABLE_SCHEM} . "." . $seq; |
46 | } |
47 | } |
48 | return; |
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49 | } |
50 | |
51 | sub get_autoinc_seq { |
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52 | my ($self,$source,$col) = @_; |
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53 | |
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54 | my @pri = $source->primary_columns; |
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55 | my ($schema,$table) = $source->name =~ /^(.+)\.(.+)$/ ? ($1,$2) |
56 | : (undef,$source->name); |
a9f32dbc |
57 | |
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58 | $self->dbh_do('_dbh_get_autoinc_seq', $schema, $table, @pri); |
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59 | } |
60 | |
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61 | sub sqlt_type { |
62 | return 'PostgreSQL'; |
63 | } |
64 | |
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65 | sub datetime_parser_type { return "DateTime::Format::Pg"; } |
66 | |
a71859b4 |
67 | sub bind_attribute_by_data_type { |
68 | my ($self,$data_type) = @_; |
69 | |
70 | my $bind_attributes = { |
eda28767 |
71 | bytea => { pg_type => DBD::Pg::PG_BYTEA }, |
5ba88f68 |
72 | blob => { pg_type => DBD::Pg::PG_BYTEA }, |
a71859b4 |
73 | }; |
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74 | |
a71859b4 |
75 | if( defined $bind_attributes->{$data_type} ) { |
9fdf90df |
76 | return $bind_attributes->{$data_type}; |
a71859b4 |
77 | } |
78 | else { |
79 | return; |
80 | } |
81 | } |
82 | |
f04b2839 |
83 | sub _sequence_fetch { |
84 | my ( $self, $type, $seq ) = @_; |
85 | my ($id) = $self->dbh->selectrow_array("SELECT nextval('${seq}')"); |
86 | return $id; |
87 | } |
88 | |
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89 | sub _svp_begin { |
eeb8cfeb |
90 | my ($self, $name) = @_; |
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91 | |
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92 | $self->dbh->pg_savepoint($name); |
adb3554a |
93 | } |
94 | |
95 | sub _svp_release { |
eeb8cfeb |
96 | my ($self, $name) = @_; |
adb3554a |
97 | |
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98 | $self->dbh->pg_release($name); |
adb3554a |
99 | } |
100 | |
101 | sub _svp_rollback { |
eeb8cfeb |
102 | my ($self, $name) = @_; |
adb3554a |
103 | |
eeb8cfeb |
104 | $self->dbh->pg_rollback_to($name); |
adb3554a |
105 | } |
106 | |
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107 | 1; |
108 | |
75d07914 |
109 | =head1 NAME |
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110 | |
111 | DBIx::Class::Storage::DBI::Pg - Automatic primary key class for PostgreSQL |
112 | |
113 | =head1 SYNOPSIS |
114 | |
115 | # In your table classes |
116 | __PACKAGE__->load_components(qw/PK::Auto Core/); |
117 | __PACKAGE__->set_primary_key('id'); |
118 | __PACKAGE__->sequence('mysequence'); |
119 | |
120 | =head1 DESCRIPTION |
121 | |
122 | This class implements autoincrements for PostgreSQL. |
123 | |
124 | =head1 AUTHORS |
125 | |
126 | Marcus Ramberg <m.ramberg@cpan.org> |
127 | |
128 | =head1 LICENSE |
129 | |
130 | You may distribute this code under the same terms as Perl itself. |
131 | |
132 | =cut |