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996be9ee |
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/; |
942bd5e0 |
10 | use mro 'c3'; |
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11 | |
3bdcf490 |
12 | our $VERSION = '0.07008'; |
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13 | |
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14 | =head1 NAME |
15 | |
16 | DBIx::Class::Schema::Loader::DBI::SQLite - DBIx::Class::Schema::Loader::DBI SQLite Implementation. |
17 | |
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18 | =head1 DESCRIPTION |
19 | |
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20 | See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>. |
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21 | |
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22 | =head1 METHODS |
23 | |
24 | =head2 rescan |
25 | |
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26 | SQLite will fail all further commands on a connection if the underlying schema |
27 | has been modified. Therefore, any runtime changes requiring C<rescan> also |
28 | require us to re-connect to the database. The C<rescan> method here handles |
29 | that reconnection for you, but beware that this must occur for any other open |
30 | sqlite connections as well. |
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31 | |
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32 | =cut |
33 | |
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34 | sub _setup { |
35 | my $self = shift; |
36 | |
37 | $self->next::method(@_); |
38 | |
39 | if (not defined $self->preserve_case) { |
40 | $self->preserve_case(0); |
41 | } |
42 | } |
43 | |
3b7f80f9 |
44 | sub rescan { |
45 | my ($self, $schema) = @_; |
46 | |
47 | $schema->storage->disconnect if $schema->storage; |
48 | $self->next::method($schema); |
49 | } |
50 | |
69219349 |
51 | # A hack so that qualify_objects can be tested on SQLite, SQLite does not |
52 | # actually have schemas. |
53 | { |
54 | sub _table_as_sql { |
55 | my $self = shift; |
56 | local $self->{db_schema}; |
57 | return $self->next::method(@_); |
58 | } |
59 | |
60 | sub _table_pk_info { |
61 | my $self = shift; |
62 | local $self->{db_schema}; |
63 | return $self->next::method(@_); |
64 | } |
65 | } |
66 | |
007e3511 |
67 | sub _columns_info_for { |
68 | my $self = shift; |
69 | my ($table) = @_; |
70 | |
71 | my $result = $self->next::method(@_); |
a8df0345 |
72 | |
dca5cd02 |
73 | my $dbh = $self->schema->storage->dbh; |
007e3511 |
74 | local $dbh->{FetchHashKeyName} = 'NAME_lc'; |
75 | |
97ab24bc |
76 | my $sth = $dbh->prepare( |
77 | "pragma table_info(" . $dbh->quote_identifier($table) . ")" |
78 | ); |
79 | $sth->execute; |
80 | my $cols = $sth->fetchall_hashref('name'); |
81 | |
692404d1 |
82 | my ($num_pk, $pk_col) = (0); |
83 | # SQLite doesn't give us the info we need to do this nicely :( |
84 | # If there is exactly one column marked PK, and its type is integer, |
85 | # set it is_auto_increment. This isn't 100%, but it's better than the |
86 | # alternatives. |
97ab24bc |
87 | while (my ($col_name, $info) = each %$result) { |
692404d1 |
88 | if ($cols->{$col_name}{pk}) { |
89 | $num_pk ++; |
90 | if (lc($cols->{$col_name}{type}) eq 'integer') { |
91 | $pk_col = $col_name; |
92 | } |
97ab24bc |
93 | } |
007e3511 |
94 | } |
95 | |
96 | while (my ($col, $info) = each %$result) { |
268cc246 |
97 | if ((eval { ${ $info->{default_value} } }||'') eq 'CURRENT_TIMESTAMP') { |
007e3511 |
98 | ${ $info->{default_value} } = 'current_timestamp'; |
dca5cd02 |
99 | } |
692404d1 |
100 | if ($num_pk == 1 and defined $pk_col and $pk_col eq $col) { |
101 | $info->{is_auto_increment} = 1; |
102 | } |
a8df0345 |
103 | } |
104 | |
007e3511 |
105 | return $result; |
996be9ee |
106 | } |
107 | |
108 | sub _table_fk_info { |
109 | my ($self, $table) = @_; |
110 | |
dca5cd02 |
111 | my $dbh = $self->schema->storage->dbh; |
112 | my $sth = $dbh->prepare( |
113 | "pragma foreign_key_list(" . $dbh->quote_identifier($table) . ")" |
114 | ); |
115 | $sth->execute; |
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116 | |
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117 | my @rels; |
118 | while (my $fk = $sth->fetchrow_hashref) { |
119 | my $rel = $rels[ $fk->{id} ] ||= { |
120 | local_columns => [], |
121 | remote_columns => undef, |
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122 | remote_table => $fk->{table} |
dca5cd02 |
123 | }; |
124 | |
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125 | push @{ $rel->{local_columns} }, $self->_lc($fk->{from}); |
126 | push @{ $rel->{remote_columns} }, $self->_lc($fk->{to}) if defined $fk->{to}; |
dca5cd02 |
127 | warn "This is supposed to be the same rel but remote_table changed from ", |
128 | $rel->{remote_table}, " to ", $fk->{table} |
bc1cb85e |
129 | if $rel->{remote_table} ne $fk->{table}; |
dca5cd02 |
130 | } |
131 | $sth->finish; |
132 | return \@rels; |
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133 | } |
134 | |
135 | sub _table_uniq_info { |
136 | my ($self, $table) = @_; |
137 | |
dca5cd02 |
138 | my $dbh = $self->schema->storage->dbh; |
139 | my $sth = $dbh->prepare( |
140 | "pragma index_list(" . $dbh->quote($table) . ")" |
141 | ); |
142 | $sth->execute; |
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143 | |
dca5cd02 |
144 | my @uniqs; |
145 | while (my $idx = $sth->fetchrow_hashref) { |
146 | next unless $idx->{unique}; |
4a1323d2 |
147 | |
dca5cd02 |
148 | my $name = $idx->{name}; |
149 | |
150 | my $get_idx_sth = $dbh->prepare("pragma index_info(" . $dbh->quote($name) . ")"); |
151 | $get_idx_sth->execute; |
152 | my @cols; |
153 | while (my $idx_row = $get_idx_sth->fetchrow_hashref) { |
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154 | push @cols, $self->_lc($idx_row->{name}); |
dca5cd02 |
155 | } |
156 | $get_idx_sth->finish; |
4a1323d2 |
157 | |
158 | # Rename because SQLite complains about sqlite_ prefixes on identifiers |
159 | # and ignores constraint names in DDL. |
160 | $name = (join '_', @cols) . '_unique'; |
161 | |
dca5cd02 |
162 | push @uniqs, [ $name => \@cols ]; |
163 | } |
164 | $sth->finish; |
165 | return \@uniqs; |
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166 | } |
167 | |
168 | sub _tables_list { |
bfb43060 |
169 | my ($self, $opts) = @_; |
5223f24a |
170 | |
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171 | my $dbh = $self->schema->storage->dbh; |
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172 | my $sth = $dbh->prepare("SELECT * FROM sqlite_master"); |
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173 | $sth->execute; |
174 | my @tables; |
175 | while ( my $row = $sth->fetchrow_hashref ) { |
26da4cc3 |
176 | next unless $row->{type} =~ /^(?:table|view)\z/i; |
522ee84e |
177 | next if $row->{tbl_name} =~ /^sqlite_/; |
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178 | push @tables, $row->{tbl_name}; |
179 | } |
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180 | $sth->finish; |
bfb43060 |
181 | return $self->_filter_tables(\@tables, $opts); |
996be9ee |
182 | } |
183 | |
184 | =head1 SEE ALSO |
185 | |
186 | L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>, |
187 | L<DBIx::Class::Schema::Loader::DBI> |
188 | |
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189 | =head1 AUTHOR |
190 | |
9cc8e7e1 |
191 | See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>. |
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192 | |
193 | =head1 LICENSE |
194 | |
195 | This library is free software; you can redistribute it and/or modify it under |
196 | the same terms as Perl itself. |
197 | |
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198 | =cut |
199 | |
200 | 1; |