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package DBIx::Class::Schema::Loader::DBI::SQLite;
use strict;
use warnings;
use base qw/
DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault
DBIx::Class::Schema::Loader::DBI
/;
use Carp::Clan qw/^DBIx::Class/;
use Text::Balanced qw( extract_bracketed );
use Class::C3;
our $VERSION = '0.07000';
=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) {
$self->preserve_case(0);
}
}
sub rescan {
my ($self, $schema) = @_;
$schema->storage->disconnect if $schema->storage;
$self->next::method($schema);
}
# A hack so that qualify_objects can be tested on SQLite, SQLite does not
# actually have schemas.
{
sub _table_as_sql {
my $self = shift;
local $self->{db_schema};
return $self->next::method(@_);
}
sub _table_pk_info {
my $self = shift;
local $self->{db_schema};
return $self->next::method(@_);
}
}
sub _columns_info_for {
my $self = shift;
my ($table) = @_;
my $result = $self->next::method(@_);
my $dbh = $self->schema->storage->dbh;
local $dbh->{FetchHashKeyName} = 'NAME_lc';
my $sth = $dbh->prepare(
"pragma table_info(" . $dbh->quote_identifier($table) . ")"
);
$sth->execute;
my $cols = $sth->fetchall_hashref('name');
while (my ($col_name, $info) = each %$result) {
if ($cols->{$col_name}{pk} && lc($cols->{$col_name}{type}) eq 'integer') {
$info->{is_auto_increment} = 1;
}
}
while (my ($col, $info) = each %$result) {
if ((eval { ${ $info->{default_value} } }||'') eq 'CURRENT_TIMESTAMP') {
${ $info->{default_value} } = 'current_timestamp';
}
}
return $result;
}
sub _table_fk_info {
my ($self, $table) = @_;
my $dbh = $self->schema->storage->dbh;
my $sth = $dbh->prepare(
"pragma foreign_key_list(" . $dbh->quote_identifier($table) . ")"
);
$sth->execute;
my @rels;
while (my $fk = $sth->fetchrow_hashref) {
my $rel = $rels[ $fk->{id} ] ||= {
local_columns => [],
remote_columns => undef,
remote_table => $fk->{table}
};
push @{ $rel->{local_columns} }, $self->_lc($fk->{from});
push @{ $rel->{remote_columns} }, $self->_lc($fk->{to}) if defined $fk->{to};
warn "This is supposed to be the same rel but remote_table changed from ",
$rel->{remote_table}, " to ", $fk->{table}
if $rel->{remote_table} ne $fk->{table};
}
$sth->finish;
return \@rels;
}
sub _table_uniq_info {
my ($self, $table) = @_;
my $dbh = $self->schema->storage->dbh;
my $sth = $dbh->prepare(
"pragma index_list(" . $dbh->quote($table) . ")"
);
$sth->execute;
my @uniqs;
while (my $idx = $sth->fetchrow_hashref) {
next unless $idx->{unique};
my $name = $idx->{name};
my $get_idx_sth = $dbh->prepare("pragma index_info(" . $dbh->quote($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;
push @uniqs, [ $name => \@cols ];
}
$sth->finish;
return \@uniqs;
}
sub _tables_list {
my ($self, $opts) = @_;
my $dbh = $self->schema->storage->dbh;
my $sth = $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, $row->{tbl_name};
}
$sth->finish;
return $self->_filter_tables(\@tables, $opts);
}
=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;
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