1 package DBIx::Class::Storage::DBI::SQLite;
6 use base qw/DBIx::Class::Storage::DBI/;
10 use Scalar::Util 'looks_like_number';
13 __PACKAGE__->sql_maker_class('DBIx::Class::SQLMaker::SQLite');
14 __PACKAGE__->sql_limit_dialect ('LimitOffset');
15 __PACKAGE__->sql_quote_char ('"');
16 __PACKAGE__->datetime_parser_type ('DateTime::Format::SQLite');
20 DBIx::Class::Storage::DBI::SQLite - Automatic primary key class for SQLite
24 # In your table classes
25 use base 'DBIx::Class::Core';
26 __PACKAGE__->set_primary_key('id');
30 This class implements autoincrements for SQLite.
42 my ($self, $dir) = @_;
45 ## Where is the db file?
46 my $dsn = $self->_dbi_connect_info()->[0];
48 my $dbname = $1 if($dsn =~ /dbname=([^;]+)/);
51 $dbname = $1 if($dsn =~ /^dbi:SQLite:(.+)$/i);
53 $self->throw_exception("Cannot determine name of SQLite db file")
54 if(!$dbname || !-f $dbname);
56 # print "Found database: $dbname\n";
57 # my $dbfile = file($dbname);
58 my ($vol, $dbdir, $file) = File::Spec->splitpath($dbname);
59 # my $file = $dbfile->basename();
60 $file = POSIX::strftime("%Y-%m-%d-%H_%M_%S", localtime()) . $file;
61 $file = "B$file" while(-f $file);
63 mkdir($dir) unless -f $dir;
64 my $backupfile = File::Spec->catfile($dir, $file);
66 my $res = File::Copy::copy($dbname, $backupfile);
67 $self->throw_exception("Backup failed! ($!)") if(!$res);
73 my ($self, $name) = @_;
75 $self->_dbh->do("SAVEPOINT $name");
78 sub _exec_svp_release {
79 my ($self, $name) = @_;
81 $self->_dbh->do("RELEASE SAVEPOINT $name");
84 sub _exec_svp_rollback {
85 my ($self, $name) = @_;
87 # For some reason this statement changes the value of $dbh->{AutoCommit}, so
88 # we localize it here to preserve the original value.
89 local $self->_dbh->{AutoCommit} = $self->_dbh->{AutoCommit};
91 $self->_dbh->do("ROLLBACK TRANSACTION TO SAVEPOINT $name");
94 sub deployment_statements {
96 my ($schema, $type, $version, $dir, $sqltargs, @rest) = @_;
101 ! exists $sqltargs->{producer_args}{sqlite_version}
103 my $dver = $self->_server_info->{normalized_dbms_version}
105 $sqltargs->{producer_args}{sqlite_version} = $dver;
108 $self->next::method($schema, $type, $version, $dir, $sqltargs, @rest);
111 sub bind_attribute_by_data_type {
112 $_[1] =~ /^ (?: int(?:eger)? | (?:tiny|small|medium)int ) $/ix
113 ? do { require DBI; DBI::SQL_INTEGER() }
118 # DBD::SQLite (at least up to version 1.31 has a bug where it will
119 # non-fatally nummify a string value bound as an integer, resulting
120 # in insertions of '0' into supposed-to-be-numeric fields
121 # Since this can result in severe data inconsistency, remove the
122 # bind attr if such a sitation is detected
124 # FIXME - when a DBD::SQLite version is released that eventually fixes
125 # this sutiation (somehow) - no-op this override once a proper DBD
126 # version is detected
127 sub _dbi_attrs_for_bind {
128 my ($self, $ident, $bind) = @_;
129 my $bindattrs = $self->next::method($ident, $bind);
131 for (0.. $#$bindattrs) {
133 defined $bindattrs->[$_]
135 defined $bind->[$_][1]
137 $bindattrs->[$_] eq DBI::SQL_INTEGER()
139 ! looks_like_number ($bind->[$_][1])
141 carp_unique( sprintf (
142 "Non-numeric value supplied for column '%s' despite the numeric datatype",
143 $bind->[$_][0]{dbic_colname} || "# $_"
145 undef $bindattrs->[$_];
152 =head2 connect_call_use_foreign_keys
156 on_connect_call => 'use_foreign_keys'
158 In L<connect_info|DBIx::Class::Storage::DBI/connect_info> to turn on foreign key
159 (including cascading) support for recent versions of SQLite and L<DBD::SQLite>.
163 PRAGMA foreign_keys = ON
165 See L<http://www.sqlite.org/foreignkeys.html> for more information.
169 sub connect_call_use_foreign_keys {
173 'PRAGMA foreign_keys = ON'
181 Matt S. Trout <mst@shadowcatsystems.co.uk>
185 You may distribute this code under the same terms as Perl itself.