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1 | package DBIx::Class::Schema::Loader::DBI::SQLite; |
2 | |
3 | use strict; |
4 | use warnings; |
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5 | use base qw/ |
6 | DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault |
7 | DBIx::Class::Schema::Loader::DBI |
8 | /; |
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9 | use Carp::Clan qw/^DBIx::Class/; |
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10 | use Text::Balanced qw( extract_bracketed ); |
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11 | use Class::C3; |
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12 | |
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13 | our $VERSION = '0.07000'; |
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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 | |
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19 | =head1 DESCRIPTION |
20 | |
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21 | See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>. |
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22 | |
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23 | =head1 METHODS |
24 | |
25 | =head2 rescan |
26 | |
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27 | SQLite will fail all further commands on a connection if the underlying schema |
28 | has been modified. Therefore, any runtime changes requiring C<rescan> also |
29 | require us to re-connect to the database. The C<rescan> method here handles |
30 | that reconnection for you, but beware that this must occur for any other open |
31 | sqlite connections as well. |
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32 | |
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33 | =cut |
34 | |
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35 | sub _setup { |
36 | my $self = shift; |
37 | |
38 | $self->next::method(@_); |
39 | |
40 | if (not defined $self->preserve_case) { |
41 | $self->preserve_case(0); |
42 | } |
43 | } |
44 | |
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45 | sub rescan { |
46 | my ($self, $schema) = @_; |
47 | |
48 | $schema->storage->disconnect if $schema->storage; |
49 | $self->next::method($schema); |
50 | } |
51 | |
69219349 |
52 | # A hack so that qualify_objects can be tested on SQLite, SQLite does not |
53 | # actually have schemas. |
54 | { |
55 | sub _table_as_sql { |
56 | my $self = shift; |
57 | local $self->{db_schema}; |
58 | return $self->next::method(@_); |
59 | } |
60 | |
61 | sub _table_pk_info { |
62 | my $self = shift; |
63 | local $self->{db_schema}; |
64 | return $self->next::method(@_); |
65 | } |
66 | } |
67 | |
007e3511 |
68 | sub _columns_info_for { |
69 | my $self = shift; |
70 | my ($table) = @_; |
71 | |
72 | my $result = $self->next::method(@_); |
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73 | |
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74 | my $dbh = $self->schema->storage->dbh; |
007e3511 |
75 | local $dbh->{FetchHashKeyName} = 'NAME_lc'; |
76 | |
97ab24bc |
77 | my $sth = $dbh->prepare( |
78 | "pragma table_info(" . $dbh->quote_identifier($table) . ")" |
79 | ); |
80 | $sth->execute; |
81 | my $cols = $sth->fetchall_hashref('name'); |
82 | |
83 | while (my ($col_name, $info) = each %$result) { |
84 | if ($cols->{$col_name}{pk} && lc($cols->{$col_name}{type}) eq 'integer') { |
85 | $info->{is_auto_increment} = 1; |
86 | } |
007e3511 |
87 | } |
88 | |
89 | while (my ($col, $info) = each %$result) { |
268cc246 |
90 | if ((eval { ${ $info->{default_value} } }||'') eq 'CURRENT_TIMESTAMP') { |
007e3511 |
91 | ${ $info->{default_value} } = 'current_timestamp'; |
dca5cd02 |
92 | } |
a8df0345 |
93 | } |
94 | |
007e3511 |
95 | return $result; |
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96 | } |
97 | |
98 | sub _table_fk_info { |
99 | my ($self, $table) = @_; |
100 | |
dca5cd02 |
101 | my $dbh = $self->schema->storage->dbh; |
102 | my $sth = $dbh->prepare( |
103 | "pragma foreign_key_list(" . $dbh->quote_identifier($table) . ")" |
104 | ); |
105 | $sth->execute; |
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106 | |
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107 | my @rels; |
108 | while (my $fk = $sth->fetchrow_hashref) { |
109 | my $rel = $rels[ $fk->{id} ] ||= { |
110 | local_columns => [], |
111 | remote_columns => undef, |
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112 | remote_table => $fk->{table} |
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113 | }; |
114 | |
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115 | push @{ $rel->{local_columns} }, $self->_lc($fk->{from}); |
116 | push @{ $rel->{remote_columns} }, $self->_lc($fk->{to}) if defined $fk->{to}; |
dca5cd02 |
117 | warn "This is supposed to be the same rel but remote_table changed from ", |
118 | $rel->{remote_table}, " to ", $fk->{table} |
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119 | if $rel->{remote_table} ne $fk->{table}; |
dca5cd02 |
120 | } |
121 | $sth->finish; |
122 | return \@rels; |
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123 | } |
124 | |
125 | sub _table_uniq_info { |
126 | my ($self, $table) = @_; |
127 | |
dca5cd02 |
128 | my $dbh = $self->schema->storage->dbh; |
129 | my $sth = $dbh->prepare( |
130 | "pragma index_list(" . $dbh->quote($table) . ")" |
131 | ); |
132 | $sth->execute; |
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133 | |
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134 | my @uniqs; |
135 | while (my $idx = $sth->fetchrow_hashref) { |
136 | next unless $idx->{unique}; |
137 | my $name = $idx->{name}; |
138 | |
139 | my $get_idx_sth = $dbh->prepare("pragma index_info(" . $dbh->quote($name) . ")"); |
140 | $get_idx_sth->execute; |
141 | my @cols; |
142 | while (my $idx_row = $get_idx_sth->fetchrow_hashref) { |
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143 | push @cols, $self->_lc($idx_row->{name}); |
dca5cd02 |
144 | } |
145 | $get_idx_sth->finish; |
146 | push @uniqs, [ $name => \@cols ]; |
147 | } |
148 | $sth->finish; |
149 | return \@uniqs; |
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150 | } |
151 | |
152 | sub _tables_list { |
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153 | my ($self, $opts) = @_; |
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154 | |
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155 | my $dbh = $self->schema->storage->dbh; |
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156 | my $sth = $dbh->prepare("SELECT * FROM sqlite_master"); |
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157 | $sth->execute; |
158 | my @tables; |
159 | while ( my $row = $sth->fetchrow_hashref ) { |
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160 | next unless $row->{type} =~ /^(?:table|view)\z/i; |
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161 | next if $row->{tbl_name} =~ /^sqlite_/; |
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162 | push @tables, $row->{tbl_name}; |
163 | } |
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164 | $sth->finish; |
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165 | return $self->_filter_tables(\@tables, $opts); |
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166 | } |
167 | |
168 | =head1 SEE ALSO |
169 | |
170 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
171 | L<DBIx::Class::Schema::Loader::DBI> |
172 | |
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173 | =head1 AUTHOR |
174 | |
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175 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
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176 | |
177 | =head1 LICENSE |
178 | |
179 | This library is free software; you can redistribute it and/or modify it under |
180 | the same terms as Perl itself. |
181 | |
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182 | =cut |
183 | |
184 | 1; |