package DBIx::Class::Storage::DBI::InterBase;
-# partly stolen from DBIx::Class::Storage::DBI::MSSQL
-
use strict;
use warnings;
use base qw/DBIx::Class::Storage::DBI/;
use mro 'c3';
-use List::Util();
-
-__PACKAGE__->mk_group_accessors(simple => qw/
- _auto_incs
-/);
+use List::Util 'first';
+use Try::Tiny;
+use namespace::clean;
=head1 NAME
=head1 DESCRIPTION
-This class implements autoincrements for Firebird using C<RETURNING>, sets the
-limit dialect to C<FIRST X SKIP X> and provides preliminary
+This class implements autoincrements for Firebird using C<RETURNING> as well as
+L<auto_nextval|DBIx::Class::ResultSource/auto_nextval> and provides
L<DBIx::Class::InflateColumn::DateTime> support.
-For ODBC support, see L<DBIx::Class::Storage::DBI::ODBC::Firebird>.
+You need to use either the
+L<disable_sth_caching|DBIx::Class::Storage::DBI/disable_sth_caching> option or
+L</connect_call_use_softcommit> (see L</CAVEATS>) for your code to function
+correctly with this driver. Otherwise you will likely get bizarre error messages
+such as C<no statement executing>. The alternative is to use the
+L<ODBC|DBIx::Class::Storage::DBI::ODBC::Firebird> driver, which is more suitable
+for long running processes such as under L<Catalyst>.
To turn on L<DBIx::Class::InflateColumn::DateTime> support, see
L</connect_call_datetime_setup>.
=cut
-sub _prep_for_execute {
- my $self = shift;
- my ($op, $extra_bind, $ident, $args) = @_;
-
- if ($op eq 'insert') {
- my @pk = $ident->_pri_cols;
- my %pk;
- @pk{@pk} = ();
-
- my @auto_inc_cols = grep {
- my $inserting = $args->[0]{$_};
-
- ($ident->column_info($_)->{is_auto_increment}
- || exists $pk{$_})
- && (
- (not defined $inserting)
- ||
- (ref $inserting eq 'SCALAR' && $$inserting =~ /^null\z/i)
- )
- } $ident->columns;
-
- if (@auto_inc_cols) {
- $args->[1]{returning} = \@auto_inc_cols;
-
- $self->_auto_incs([]);
- $self->_auto_incs->[0] = \@auto_inc_cols;
- }
- }
+# set default
+__PACKAGE__->_use_insert_returning (1);
+__PACKAGE__->sql_limit_dialect ('FirstSkip');
- return $self->next::method(@_);
-}
+sub _sequence_fetch {
+ my ($self, $nextval, $sequence) = @_;
-sub _execute {
- my $self = shift;
- my ($op) = @_;
-
- my ($rv, $sth, @bind) = $self->dbh_do($self->can('_dbh_execute'), @_);
-
- if ($op eq 'insert' && $self->_auto_incs) {
- local $@;
- my (@auto_incs) = eval {
- local $SIG{__WARN__} = sub {};
- $sth->fetchrow_array
- };
- $self->_auto_incs->[1] = \@auto_incs;
- $sth->finish;
- }
+ $self->throw_exception("Can only fetch 'nextval' for a sequence")
+ if $nextval !~ /^nextval$/i;
+
+ $self->throw_exception('No sequence to fetch') unless $sequence;
- return wantarray ? ($rv, $sth, @bind) : $rv;
+ my ($val) = $self->_get_dbh->selectrow_array(sprintf
+ 'SELECT GEN_ID(%s, 1) FROM rdb$database',
+ $self->sql_maker->_quote($sequence)
+ );
+
+ return $val;
}
-sub last_insert_id {
- my ($self, $source, @cols) = @_;
- my @result;
+sub _dbh_get_autoinc_seq {
+ my ($self, $dbh, $source, $col) = @_;
- my %auto_incs;
- @auto_incs{ @{ $self->_auto_incs->[0] } } =
- @{ $self->_auto_incs->[1] };
+ my $table_name = $source->from;
+ $table_name = $$table_name if ref $table_name;
+ $table_name = $self->sql_maker->quote_char ? $table_name : uc($table_name);
- push @result, $auto_incs{$_} for @cols;
+ local $dbh->{LongReadLen} = 100000;
+ local $dbh->{LongTruncOk} = 1;
- return @result;
-}
+ my $sth = $dbh->prepare(<<'EOF');
+SELECT t.rdb$trigger_source
+FROM rdb$triggers t
+WHERE t.rdb$relation_name = ?
+AND t.rdb$system_flag = 0 -- user defined
+AND t.rdb$trigger_type = 1 -- BEFORE INSERT
+EOF
+ $sth->execute($table_name);
-# this sub stolen from DB2
+ while (my ($trigger) = $sth->fetchrow_array) {
+ my @trig_cols = map {
+ /^"([^"]+)/ ? $1 : uc($1)
+ } $trigger =~ /new\.("?\w+"?)/ig;
-sub _sql_maker_opts {
- my ( $self, $opts ) = @_;
+ my ($quoted, $generator) = $trigger =~
+/(?:gen_id\s* \( \s* |next \s* value \s* for \s*)(")?(\w+)/ix;
- if ( $opts ) {
- $self->{_sql_maker_opts} = { %$opts };
+ if ($generator) {
+ $generator = uc $generator unless $quoted;
+
+ return $generator
+ if first {
+ $self->sql_maker->quote_char ? ($_ eq $col) : (uc($_) eq uc($col))
+ } @trig_cols;
+ }
}
- return { limit_dialect => 'FirstSkip', %{$self->{_sql_maker_opts}||{}} };
+ return undef;
}
sub _svp_begin {
my $dbh = $self->_dbh or return 0;
local $dbh->{RaiseError} = 1;
+ local $dbh->{PrintError} = 0;
- eval {
+ return try {
$dbh->do('select 1 from rdb$database');
+ 1;
+ } catch {
+ 0;
};
-
- return $@ ? 0 : 1;
}
# We want dialect 3 for new features and quoting to work, DBD::InterBase uses
}
}
-# softcommit makes savepoints work
-sub _run_connection_actions {
+sub _get_server_version {
my $self = shift;
- $self->_dbh->{ib_softcommit} = 1;
+ return $self->next::method(@_) if ref $self ne __PACKAGE__;
+
+ local $SIG{__WARN__} = sub {}; # silence warning due to bug in DBD::InterBase
+
+ return $self->next::method(@_);
+}
+
+=head2 connect_call_use_softcommit
+
+Used as:
+
+ on_connect_call => 'use_softcommit'
+
+In L<connect_info|DBIx::Class::Storage::DBI/connect_info> to set the
+L<DBD::InterBase> C<ib_softcommit> option.
+
+You need either this option or C<< disable_sth_caching => 1 >> for
+L<DBIx::Class> code to function correctly (otherwise you may get C<no statement
+executing> errors.) Or use the L<ODBC|DBIx::Class::Storage::DBI::ODBC::Firebird>
+driver.
+
+The downside of using this option is that your process will B<NOT> see UPDATEs,
+INSERTs and DELETEs from other processes for already open statements.
+
+=cut
- $self->next::method(@_);
+sub connect_call_use_softcommit {
+ my $self = shift;
+
+ $self->_dbh->{ib_softcommit} = 1;
}
=head2 connect_call_datetime_setup
=item *
-C<last_insert_id> support only works for Firebird versions 2 or greater. To
-work with earlier versions, we'll need to figure out how to retrieve the bodies
-of C<BEFORE INSERT> triggers and parse them for the C<GENERATOR> name.
+with L</connect_call_use_softcommit>, you will not be able to see changes made
+to data in other processes. If this is an issue, use
+L<disable_sth_caching|DBIx::Class::Storage::DBI/disable_sth_caching> as a
+workaround for the C<no statement executing> errors, this of course adversely
+affects performance.
+
+Alternately, use the L<ODBC|DBIx::Class::Storage::DBI::ODBC::Firebird> driver.
+
+=item *
+
+C<last_insert_id> support by default only works for Firebird versions 2 or
+greater, L<auto_nextval|DBIx::Class::ResultSource/auto_nextval> however should
+work with earlier versions.
+
+=item *
+
+Sub-second precision for TIMESTAMPs is not currently available when using the
+L<ODBC|DBIx::Class::Storage::DBI::ODBC::Firebird> driver.
=back
projects / dbsrgits/DBIx-Class.git / blobdiff