support sub-second precision for TIMESTAMPs for Firebird over ODBC
[dbsrgits/DBIx-Class.git] / lib / DBIx / Class / Storage / DBI / ODBC / Firebird.pm
1 package DBIx::Class::Storage::DBI::ODBC::Firebird;
2
3 use strict;
4 use warnings;
5 use base 'DBIx::Class::Storage::DBI::InterBase';
6 use mro 'c3';
7 use Try::Tiny;
8 use namespace::clean;
9
10 =head1 NAME
11
12 DBIx::Class::Storage::DBI::ODBC::Firebird - Driver for using the Firebird RDBMS
13 through ODBC
14
15 =head1 DESCRIPTION
16
17 Most functionality is provided by L<DBIx::Class::Storage::DBI::Interbase>, see
18 that module for details.
19
20 To build the ODBC driver for Firebird on Linux for unixODBC, see:
21
22 L<http://www.firebirdnews.org/?p=1324>
23
24 This driver does not suffer from the nested statement handles across commits
25 issue that the L<DBD::InterBase|DBIx::Class::Storage::DBI::InterBase> or the
26 L<DBD::Firebird|DBIx::Class::Storage::DBI::Firebird> based driver does. This
27 makes it more suitable for long running processes such as under L<Catalyst>.
28
29 =cut
30
31 __PACKAGE__->datetime_parser_type ('DBIx::Class::Storage::DBI::ODBC::Firebird::DateTime::Format');
32
33 # XXX seemingly no equivalent to ib_time_all from DBD::InterBase via ODBC
34 sub connect_call_datetime_setup { 1 }
35
36 # we don't need DBD::InterBase-specific initialization
37 sub _init { 1 }
38
39 # ODBC uses dialect 3 by default, good
40 sub _set_sql_dialect { 1 }
41
42 # releasing savepoints doesn't work for some reason, but that shouldn't matter
43 sub _svp_release { 1 }
44
45 sub _svp_rollback {
46   my ($self, $name) = @_;
47
48   try {
49     $self->_dbh->do("ROLLBACK TO SAVEPOINT $name")
50   }
51   catch {
52     # Firebird ODBC driver bug, ignore
53     if (not /Unable to fetch information about the error/) {
54       $self->throw_exception($_);
55     }
56   };
57 }
58
59 package # hide from PAUSE
60   DBIx::Class::Storage::DBI::ODBC::Firebird::DateTime::Format;
61
62 # inherit parse/format date
63 our @ISA = 'DBIx::Class::Storage::DBI::InterBase::DateTime::Format';
64
65 my $timestamp_format = '%Y-%m-%d %H:%M:%S.%4N'; # %F %T
66 my $timestamp_parser;
67
68 sub parse_datetime {
69   shift;
70   require DateTime::Format::Strptime;
71   $timestamp_parser ||= DateTime::Format::Strptime->new(
72     pattern  => $timestamp_format,
73     on_error => 'croak',
74   );
75   return $timestamp_parser->parse_datetime(shift);
76 }
77
78 sub format_datetime {
79   shift;
80   require DateTime::Format::Strptime;
81   $timestamp_parser ||= DateTime::Format::Strptime->new(
82     pattern  => $timestamp_format,
83     on_error => 'croak',
84   );
85   return $timestamp_parser->format_datetime(shift);
86 }
87
88 1;
89
90 =head1 AUTHOR
91
92 See L<DBIx::Class/AUTHOR> and L<DBIx::Class/CONTRIBUTORS>.
93
94 =head1 LICENSE
95
96 You may distribute this code under the same terms as Perl itself.
97
98 =cut
99 # vim:sts=2 sw=2: