X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI%2FInterBase.pm;h=cb6d8f9d67765c0ec7facea17f68e8bbcd1c93dc;hb=e5a62c46f;hp=a15bb1f70d182eef9a9e6e90939193d7bc86d313;hpb=88a8d0fabfdaa60d2b29f5f572b2baa064731b3d;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Storage/DBI/InterBase.pm b/lib/DBIx/Class/Storage/DBI/InterBase.pm
index a15bb1f..cb6d8f9 100644
--- a/lib/DBIx/Class/Storage/DBI/InterBase.pm
+++ b/lib/DBIx/Class/Storage/DBI/InterBase.pm
@@ -1,71 +1,161 @@
 package DBIx::Class::Storage::DBI::InterBase;
 
-# mostly stolen from DBIx::Class::Storage::DBI::MSSQL
-
 use strict;
 use warnings;
-
-use base qw/DBIx::Class::Storage::DBI::AmbiguousGlob DBIx::Class::Storage::DBI/;
+use base qw/DBIx::Class::Storage::DBI::Firebird::Common/;
 use mro 'c3';
+use Try::Tiny;
+use namespace::clean;
+
+=head1 NAME
+
+DBIx::Class::Storage::DBI::InterBase - Driver for the Firebird RDBMS via
+L<DBD::InterBase>
+
+=head1 DESCRIPTION
+
+This driver is a subclass of L<DBIx::Class::Storage::DBI::Firebird::Common> for
+use with L<DBD::InterBase>, see that driver for general details.
 
-use List::Util();
+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>.
 
-__PACKAGE__->mk_group_accessors(simple => qw/
-  _identity _identity_method
-/);
+To turn on L<DBIx::Class::InflateColumn::DateTime> support, see
+L</connect_call_datetime_setup>.
 
-__PACKAGE__->sql_maker_class('DBIx::Class::SQLAHacks::InterBase');
+=cut
 
-sub insert_bulk {
+sub _ping {
   my $self = shift;
-  my ($source, $cols, $data) = @_;
 
-  my $is_identity_insert = (List::Util::first
-      { $source->column_info ($_)->{is_auto_increment} }
-      (@{$cols})
-  )
-     ? 1
-     : 0;
+  my $dbh = $self->_dbh or return 0;
 
-  $self->next::method(@_);
+  local $dbh->{RaiseError} = 1;
+  local $dbh->{PrintError} = 0;
+
+  return try {
+    $dbh->do('select 1 from rdb$database');
+    1;
+  } catch {
+    0;
+  };
 }
 
+# We want dialect 3 for new features and quoting to work, DBD::InterBase uses
+# dialect 1 (interbase compat) by default.
+sub _init {
+  my $self = shift;
+  $self->_set_sql_dialect(3);
+}
 
-sub _prep_for_execute {
+sub _set_sql_dialect {
   my $self = shift;
-  my ($op, $extra_bind, $ident, $args) = @_;
+  my $val  = shift || 3;
 
-  my ($sql, $bind) = $self->next::method (@_);
+  my $dsn = $self->_dbi_connect_info->[0];
 
-  if ($op eq 'insert') {
-    $sql .= 'RETURNING "Id"';
+  return if ref($dsn) eq 'CODE';
 
+  if ($dsn !~ /ib_dialect=/) {
+    $self->_dbi_connect_info->[0] = "$dsn;ib_dialect=$val";
+    my $connected = defined $self->_dbh;
+    $self->disconnect;
+    $self->ensure_connected if $connected;
   }
-
-  return ($sql, $bind);
 }
 
-sub _execute {
-  my $self = shift;
-  my ($op) = @_;
+=head2 connect_call_use_softcommit
 
-  my ($rv, $sth, @bind) = $self->dbh_do($self->can('_dbh_execute'), @_);
+Used as:
 
-  if ($op eq 'insert') {
+  on_connect_call => 'use_softcommit'
 
-    # this should bring back the result of SELECT SCOPE_IDENTITY() we tacked
-    # on in _prep_for_execute above
-    local $@;
-    my ($identity) = eval { $sth->fetchrow_array };
+In L<connect_info|DBIx::Class::Storage::DBI/connect_info> to set the
+L<DBD::InterBase> C<ib_softcommit> option.
 
-    $self->_identity($identity);
-    $sth->finish;
-  }
+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
 
-  return wantarray ? ($rv, $sth, @bind) : $rv;
+sub connect_call_use_softcommit {
+  my $self = shift;
+
+  $self->_dbh->{ib_softcommit} = 1;
 }
 
-sub last_insert_id { shift->_identity }
+=head2 connect_call_datetime_setup
+
+Used as:
+
+  on_connect_call => 'datetime_setup'
+
+In L<connect_info|DBIx::Class::Storage::DBI/connect_info> to set the date and
+timestamp formats using:
+
+  $dbh->{ib_time_all} = 'ISO';
+
+See L<DBD::InterBase> for more details.
+
+The C<TIMESTAMP> data type supports up to 4 digits after the decimal point for
+second precision. The full precision is used.
+
+The C<DATE> data type stores the date portion only, and it B<MUST> be declared
+with:
+
+  data_type => 'date'
+
+in your Result class.
+
+Timestamp columns can be declared with either C<datetime> or C<timestamp>.
+
+You will need the L<DateTime::Format::Strptime> module for inflation to work.
+
+For L<DBIx::Class::Storage::DBI::ODBC::Firebird>, this is a noop.
+
+=cut
+
+sub connect_call_datetime_setup {
+  my $self = shift;
+
+  $self->_get_dbh->{ib_time_all} = 'ISO';
+}
 
 1;
 
+=head1 CAVEATS
+
+=over 4
+
+=item *
+
+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.
+
+=back
+
+=head1 AUTHOR
+
+See L<DBIx::Class/AUTHOR> and L<DBIx::Class/CONTRIBUTORS>.
+
+=head1 LICENSE
+
+You may distribute this code under the same terms as Perl itself.
+
+=cut
+# vim:sts=2 sw=2: