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1 | package DBIx::Class::Schema::Loader::DBI::SQLite; |
2 | |
3 | use strict; |
4 | use warnings; |
893c0d45 |
5 | use base qw/ |
6 | DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault |
7 | DBIx::Class::Schema::Loader::DBI |
8 | /; |
fa994d3c |
9 | use Carp::Clan qw/^DBIx::Class/; |
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10 | use Text::Balanced qw( extract_bracketed ); |
25328cc4 |
11 | use Class::C3; |
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12 | |
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13 | our $VERSION = '0.06000'; |
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14 | |
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15 | =head1 NAME |
16 | |
17 | DBIx::Class::Schema::Loader::DBI::SQLite - DBIx::Class::Schema::Loader::DBI SQLite Implementation. |
18 | |
19 | =head1 SYNOPSIS |
20 | |
21 | package My::Schema; |
22 | use base qw/DBIx::Class::Schema::Loader/; |
23 | |
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24 | __PACKAGE__->loader_options( debug => 1 ); |
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25 | |
26 | 1; |
27 | |
28 | =head1 DESCRIPTION |
29 | |
30 | See L<DBIx::Class::Schema::Loader::Base>. |
31 | |
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32 | =head1 METHODS |
33 | |
34 | =head2 rescan |
35 | |
36 | SQLite will fail all further commands on a connection if the |
37 | underlying schema has been modified. Therefore, any runtime |
38 | changes requiring C<rescan> also require us to re-connect |
39 | to the database. The C<rescan> method here handles that |
40 | reconnection for you, but beware that this must occur for |
41 | any other open sqlite connections as well. |
42 | |
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43 | =cut |
44 | |
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45 | sub rescan { |
46 | my ($self, $schema) = @_; |
47 | |
48 | $schema->storage->disconnect if $schema->storage; |
49 | $self->next::method($schema); |
50 | } |
51 | |
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52 | sub _extra_column_info { |
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53 | my ($self, $table, $col_name, $info, $dbi_info) = @_; |
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54 | my %extra_info; |
55 | |
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56 | my $dbh = $self->schema->storage->dbh; |
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57 | my $has_autoinc = eval { |
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58 | my $get_seq = $self->{_cache}{sqlite_sequence} |
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59 | ||= $dbh->prepare(q{SELECT count(*) FROM sqlite_sequence WHERE name = ?}); |
60 | $get_seq->execute($table); |
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61 | my ($ret) = $get_seq->fetchrow_array; |
62 | $get_seq->finish; |
63 | $ret; |
dca5cd02 |
64 | }; |
dca5cd02 |
65 | |
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66 | if (!$@ && $has_autoinc) { |
dca5cd02 |
67 | my $sth = $dbh->prepare( |
68 | "pragma table_info(" . $dbh->quote_identifier($table) . ")" |
69 | ); |
70 | $sth->execute; |
71 | my $cols = $sth->fetchall_hashref('name'); |
72 | if ($cols->{$col_name}{pk}) { |
73 | $extra_info{is_auto_increment} = 1; |
74 | } |
a8df0345 |
75 | } |
76 | |
77 | return \%extra_info; |
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78 | } |
79 | |
80 | sub _table_fk_info { |
81 | my ($self, $table) = @_; |
82 | |
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83 | my $dbh = $self->schema->storage->dbh; |
84 | my $sth = $dbh->prepare( |
85 | "pragma foreign_key_list(" . $dbh->quote_identifier($table) . ")" |
86 | ); |
87 | $sth->execute; |
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88 | |
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89 | my @rels; |
90 | while (my $fk = $sth->fetchrow_hashref) { |
91 | my $rel = $rels[ $fk->{id} ] ||= { |
92 | local_columns => [], |
93 | remote_columns => undef, |
94 | remote_table => lc $fk->{table} |
95 | }; |
96 | |
97 | push @{ $rel->{local_columns} }, lc $fk->{from}; |
98 | push @{ $rel->{remote_columns} }, lc $fk->{to} if defined $fk->{to}; |
99 | warn "This is supposed to be the same rel but remote_table changed from ", |
100 | $rel->{remote_table}, " to ", $fk->{table} |
101 | if $rel->{remote_table} ne lc $fk->{table}; |
102 | } |
103 | $sth->finish; |
104 | return \@rels; |
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105 | } |
106 | |
107 | sub _table_uniq_info { |
108 | my ($self, $table) = @_; |
109 | |
dca5cd02 |
110 | my $dbh = $self->schema->storage->dbh; |
111 | my $sth = $dbh->prepare( |
112 | "pragma index_list(" . $dbh->quote($table) . ")" |
113 | ); |
114 | $sth->execute; |
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115 | |
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116 | my @uniqs; |
117 | while (my $idx = $sth->fetchrow_hashref) { |
118 | next unless $idx->{unique}; |
119 | my $name = $idx->{name}; |
120 | |
121 | my $get_idx_sth = $dbh->prepare("pragma index_info(" . $dbh->quote($name) . ")"); |
122 | $get_idx_sth->execute; |
123 | my @cols; |
124 | while (my $idx_row = $get_idx_sth->fetchrow_hashref) { |
125 | push @cols, lc $idx_row->{name}; |
126 | } |
127 | $get_idx_sth->finish; |
128 | push @uniqs, [ $name => \@cols ]; |
129 | } |
130 | $sth->finish; |
131 | return \@uniqs; |
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132 | } |
133 | |
134 | sub _tables_list { |
bfb43060 |
135 | my ($self, $opts) = @_; |
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136 | |
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137 | my $dbh = $self->schema->storage->dbh; |
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138 | my $sth = $dbh->prepare("SELECT * FROM sqlite_master"); |
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139 | $sth->execute; |
140 | my @tables; |
141 | while ( my $row = $sth->fetchrow_hashref ) { |
26da4cc3 |
142 | next unless $row->{type} =~ /^(?:table|view)\z/i; |
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143 | next if $row->{tbl_name} =~ /^sqlite_/; |
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144 | push @tables, $row->{tbl_name}; |
145 | } |
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146 | $sth->finish; |
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147 | return $self->_filter_tables(\@tables, $opts); |
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148 | } |
149 | |
150 | =head1 SEE ALSO |
151 | |
152 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
153 | L<DBIx::Class::Schema::Loader::DBI> |
154 | |
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155 | =head1 AUTHOR |
156 | |
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157 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
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158 | |
159 | =head1 LICENSE |
160 | |
161 | This library is free software; you can redistribute it and/or modify it under |
162 | the same terms as Perl itself. |
163 | |
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164 | =cut |
165 | |
166 | 1; |