/usr/share/perl5/DBIx/Class/Schema/Loader/DBI/SQLite.pm is in libdbix-class-schema-loader-perl 0.07042-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 | package DBIx::Class::Schema::Loader::DBI::SQLite;
use strict;
use warnings;
use base 'DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault';
use mro 'c3';
use DBIx::Class::Schema::Loader::Table ();
our $VERSION = '0.07042';
=head1 NAME
DBIx::Class::Schema::Loader::DBI::SQLite - DBIx::Class::Schema::Loader::DBI SQLite Implementation.
=head1 DESCRIPTION
See L<DBIx::Class::Schema::Loader> and L<DBIx::Class::Schema::Loader::Base>.
=head1 METHODS
=head2 rescan
SQLite will fail all further commands on a connection if the underlying schema
has been modified. Therefore, any runtime changes requiring C<rescan> also
require us to re-connect to the database. The C<rescan> method here handles
that reconnection for you, but beware that this must occur for any other open
sqlite connections as well.
=cut
sub _setup {
my $self = shift;
$self->next::method(@_);
if (not defined $self->preserve_case) {
$self->preserve_case(0);
}
if ($self->db_schema) {
warn <<'EOF';
db_schema is not supported on SQLite, the option is implemented only for qualify_objects testing.
EOF
if ($self->db_schema->[0] eq '%') {
$self->db_schema(undef);
}
}
}
sub rescan {
my ($self, $schema) = @_;
$schema->storage->disconnect if $schema->storage;
$self->next::method($schema);
}
sub _columns_info_for {
my $self = shift;
my ($table) = @_;
my $result = $self->next::method(@_);
local $self->dbh->{FetchHashKeyName} = 'NAME_lc';
my $sth = $self->dbh->prepare(
"pragma table_info(" . $self->dbh->quote_identifier($table) . ")"
);
$sth->execute;
my $cols = $sth->fetchall_hashref('name');
# copy and case according to preserve_case mode
# no need to check for collisions, SQLite does not allow them
my %cols;
while (my ($col, $info) = each %$cols) {
$cols{ $self->_lc($col) } = $info;
}
my ($num_pk, $pk_col) = (0);
# SQLite doesn't give us the info we need to do this nicely :(
# If there is exactly one column marked PK, and its type is integer,
# set it is_auto_increment. This isn't 100%, but it's better than the
# alternatives.
while (my ($col_name, $info) = each %$result) {
if ($cols{$col_name}{pk}) {
$num_pk++;
if (lc($cols{$col_name}{type}) eq 'integer') {
$pk_col = $col_name;
}
}
}
while (my ($col, $info) = each %$result) {
if ((eval { ${ $info->{default_value} } }||'') eq 'CURRENT_TIMESTAMP') {
${ $info->{default_value} } = 'current_timestamp';
}
if ($num_pk == 1 and defined $pk_col and $pk_col eq $col) {
$info->{is_auto_increment} = 1;
}
}
return $result;
}
sub _table_fk_info {
my ($self, $table) = @_;
my $sth = $self->dbh->prepare(
"pragma foreign_key_list(" . $self->dbh->quote_identifier($table) . ")"
);
$sth->execute;
my @rels;
while (my $fk = $sth->fetchrow_hashref) {
my $rel = $rels[ $fk->{id} ] ||= {
local_columns => [],
remote_columns => undef,
remote_table => DBIx::Class::Schema::Loader::Table->new(
loader => $self,
name => $fk->{table},
($self->db_schema ? (
schema => $self->db_schema->[0],
ignore_schema => 1,
) : ()),
),
};
push @{ $rel->{local_columns} }, $self->_lc($fk->{from});
push @{ $rel->{remote_columns} }, $self->_lc($fk->{to}) if defined $fk->{to};
$rel->{attrs} ||= {
on_delete => uc $fk->{on_delete},
on_update => uc $fk->{on_update},
};
warn "This is supposed to be the same rel but remote_table changed from ",
$rel->{remote_table}->name, " to ", $fk->{table}
if $rel->{remote_table}->name ne $fk->{table};
}
$sth->finish;
# now we need to determine whether each FK is DEFERRABLE, this can only be
# done by parsing the DDL from sqlite_master
my $ddl = $self->dbh->selectcol_arrayref(<<"EOF", undef, $table->name, $table->name)->[0];
select sql from sqlite_master
where name = ? and tbl_name = ?
EOF
foreach my $fk (@rels) {
my $local_cols = '"?' . (join '"? \s* , \s* "?', map quotemeta, @{ $fk->{local_columns} }) . '"?';
my $remote_cols = '"?' . (join '"? \s* , \s* "?', map quotemeta, @{ $fk->{remote_columns} || [] }) . '"?';
my ($deferrable_clause) = $ddl =~ /
foreign \s+ key \s* \( \s* $local_cols \s* \) \s* references \s* (?:\S+|".+?(?<!")") \s*
(?:\( \s* $remote_cols \s* \) \s*)?
(?:(?:
on \s+ (?:delete|update) \s+ (?:set \s+ null|set \s+ default|cascade|restrict|no \s+ action)
|
match \s* (?:\S+|".+?(?<!")")
) \s*)*
((?:not)? \s* deferrable)?
/sxi;
if ($deferrable_clause) {
$fk->{attrs}{is_deferrable} = $deferrable_clause =~ /not/i ? 0 : 1;
}
else {
# check for inline constraint if 1 local column
if (@{ $fk->{local_columns} } == 1) {
my ($local_col) = @{ $fk->{local_columns} };
my ($remote_col) = @{ $fk->{remote_columns} || [] };
$remote_col ||= '';
my ($deferrable_clause) = $ddl =~ /
"?\Q$local_col\E"? \s* (?:\w+\s*)* (?: \( \s* \d\+ (?:\s*,\s*\d+)* \s* \) )? \s*
references \s+ (?:\S+|".+?(?<!")") (?:\s* \( \s* "?\Q$remote_col\E"? \s* \))? \s*
(?:(?:
on \s+ (?:delete|update) \s+ (?:set \s+ null|set \s+ default|cascade|restrict|no \s+ action)
|
match \s* (?:\S+|".+?(?<!")")
) \s*)*
((?:not)? \s* deferrable)?
/sxi;
if ($deferrable_clause) {
$fk->{attrs}{is_deferrable} = $deferrable_clause =~ /not/i ? 0 : 1;
}
else {
$fk->{attrs}{is_deferrable} = 0;
}
}
else {
$fk->{attrs}{is_deferrable} = 0;
}
}
}
return \@rels;
}
sub _table_uniq_info {
my ($self, $table) = @_;
my $sth = $self->dbh->prepare(
"pragma index_list(" . $self->dbh->quote($table) . ")"
);
$sth->execute;
my @uniqs;
while (my $idx = $sth->fetchrow_hashref) {
next unless $idx->{unique};
my $name = $idx->{name};
my $get_idx_sth = $self->dbh->prepare("pragma index_info(" . $self->dbh->quote($name) . ")");
$get_idx_sth->execute;
my @cols;
while (my $idx_row = $get_idx_sth->fetchrow_hashref) {
push @cols, $self->_lc($idx_row->{name});
}
$get_idx_sth->finish;
# Rename because SQLite complains about sqlite_ prefixes on identifiers
# and ignores constraint names in DDL.
$name = (join '_', @cols) . '_unique';
push @uniqs, [ $name => \@cols ];
}
$sth->finish;
return [ sort { $a->[0] cmp $b->[0] } @uniqs ];
}
sub _tables_list {
my ($self, $opts) = @_;
my $sth = $self->dbh->prepare("SELECT * FROM sqlite_master");
$sth->execute;
my @tables;
while ( my $row = $sth->fetchrow_hashref ) {
next unless $row->{type} =~ /^(?:table|view)\z/i;
next if $row->{tbl_name} =~ /^sqlite_/;
push @tables, DBIx::Class::Schema::Loader::Table->new(
loader => $self,
name => $row->{tbl_name},
($self->db_schema ? (
schema => $self->db_schema->[0],
ignore_schema => 1, # for qualify_objects tests
) : ()),
);
}
$sth->finish;
return $self->_filter_tables(\@tables, $opts);
}
sub _table_info_matches {
my ($self, $table, $info) = @_;
my $table_schema = $table->schema;
$table_schema = 'main' if !defined $table_schema;
return $info->{TABLE_SCHEM} eq $table_schema
&& $info->{TABLE_NAME} eq $table->name;
}
=head1 SEE ALSO
L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>,
L<DBIx::Class::Schema::Loader::DBI>
=head1 AUTHOR
See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
=head1 LICENSE
This library is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
=cut
1;
# vim:et sts=4 sw=4 tw=0:
|