Another overhaul of transaction/savepoint handling

[dbsrgits/DBIx-Class.git] / lib / DBIx / Class / Storage / DBI / ODBC / Firebird.pm

diff --git a/lib/DBIx/Class/Storage/DBI/ODBC/Firebird.pm b/lib/DBIx/Class/Storage/DBI/ODBC/Firebird.pm
index 16f0ec9..133dcc1 100644 (file)
--- a/lib/DBIx/Class/Storage/DBI/ODBC/Firebird.pm
+++ b/lib/DBIx/Class/Storage/DBI/ODBC/Firebird.pm
@@ -2,53 +2,81 @@ package DBIx::Class::Storage::DBI::ODBC::Firebird;
 
 use strict;
 use warnings;
-use base qw/DBIx::Class::Storage::DBI::InterBase/;
+use base 'DBIx::Class::Storage::DBI::Firebird::Common';
 use mro 'c3';
+use Try::Tiny;
+use namespace::clean;
 
 =head1 NAME
 
 DBIx::Class::Storage::DBI::ODBC::Firebird - Driver for using the Firebird RDBMS
 through ODBC
 
-=head1 SYNOPSIS
+=head1 DESCRIPTION
 
-Most functionality is provided by L<DBIx::Class::Storage::DBI::Interbase>, see
-that module for details.
+Most functionality is provided by
+L<DBIx::Class::Storage::DBI::Firebird::Common>, see that driver for details.
 
 To build the ODBC driver for Firebird on Linux for unixODBC, see:
 
 L<http://www.firebirdnews.org/?p=1324>
 
+This driver does not suffer from the nested statement handles across commits
+issue that the L<DBD::InterBase|DBIx::Class::Storage::DBI::InterBase> or the
+L<DBD::Firebird|DBIx::Class::Storage::DBI::Firebird> based driver does. This
+makes it more suitable for long running processes such as under L<Catalyst>.
+
 =cut
 
-# XXX seemingly no equivalent to ib_time_all in DBD::InterBase via ODBC
-sub connect_call_datetime_setup { 1 }
+__PACKAGE__->datetime_parser_type ('DBIx::Class::Storage::DBI::ODBC::Firebird::DateTime::Format');
 
-# from MSSQL
+# releasing savepoints doesn't work for some reason, but that shouldn't matter
+sub _exec_svp_release { 1 }
 
-sub build_datetime_parser {
-  my $self = shift;
-  my $type = "DateTime::Format::Strptime";
-  eval "use ${type}";
-  $self->throw_exception("Couldn't load ${type}: $@") if $@;
-  return $type->new(
-    pattern => '%Y-%m-%d %H:%M:%S', # %F %T
-    on_error => 'croak',
-  );
+sub _exec_svp_rollback {
+  my ($self, $name) = @_;
+
+  try {
+    $self->_dbh->do("ROLLBACK TO SAVEPOINT $name")
+  }
+  catch {
+    # Firebird ODBC driver bug, ignore
+    if (not /Unable to fetch information about the error/) {
+      $self->throw_exception($_);
+    }
+  };
 }
 
-# we don't need DBD::InterBase-specific initialization
-sub _init { 1 }
+package # hide from PAUSE
+  DBIx::Class::Storage::DBI::ODBC::Firebird::DateTime::Format;
 
-# ODBC uses dialect 3 by default, good
-sub _set_sql_dialect { 1 }
+# inherit parse/format date
+our @ISA = 'DBIx::Class::Storage::DBI::InterBase::DateTime::Format';
 
-1;
+my $timestamp_format = '%Y-%m-%d %H:%M:%S.%4N'; # %F %T
+my $timestamp_parser;
 
-=head1 CAVEATS
+sub parse_datetime {
+  shift;
+  require DateTime::Format::Strptime;
+  $timestamp_parser ||= DateTime::Format::Strptime->new(
+    pattern  => $timestamp_format,
+    on_error => 'croak',
+  );
+  return $timestamp_parser->parse_datetime(shift);
+}
+
+sub format_datetime {
+  shift;
+  require DateTime::Format::Strptime;
+  $timestamp_parser ||= DateTime::Format::Strptime->new(
+    pattern  => $timestamp_format,
+    on_error => 'croak',
+  );
+  return $timestamp_parser->format_datetime(shift);
+}
 
-This driver (unlike L<DBD::InterBase>) does not currently support reading or
-writing C<TIMESTAMP> values with sub-second precision.
+1;
 
 =head1 AUTHOR
 
@@ -59,3 +87,4 @@ See L<DBIx::Class/AUTHOR> and L<DBIx::Class/CONTRIBUTORS>.
 You may distribute this code under the same terms as Perl itself.
 
 =cut
+# vim:sts=2 sw=2: