X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI%2FInformix.pm;h=8f230772e492b77f96bf8210d8e7d87626b638dc;hb=b9ca4ff1e045a7863033012e98dc83b5dc95e26e;hp=c08cb9a98090c8f085291c2c39636510f59f7c3b;hpb=193590c261bf21b2ec81667295b78703f5d7bc82;p=dbsrgits%2FDBIx-Class-Historic.git

diff --git a/lib/DBIx/Class/Storage/DBI/Informix.pm b/lib/DBIx/Class/Storage/DBI/Informix.pm
index c08cb9a..8f23077 100644
--- a/lib/DBIx/Class/Storage/DBI/Informix.pm
+++ b/lib/DBIx/Class/Storage/DBI/Informix.pm
@@ -3,11 +3,25 @@ use strict;
 use warnings;
 
 use base qw/DBIx::Class::Storage::DBI/;
-
 use mro 'c3';
 
+use Scope::Guard ();
+use Context::Preserve ();
+
 __PACKAGE__->mk_group_accessors('simple' => '__last_insert_id');
 
+=head1 NAME
+
+DBIx::Class::Storage::DBI::Informix - Base Storage Class for Informix Support
+
+=head1 DESCRIPTION
+
+This class implements storage-specific support for the Informix RDBMS
+
+=head1 METHODS
+
+=cut
+
 sub _execute {
   my $self = shift;
   my ($op) = @_;
@@ -32,23 +46,141 @@ sub _sql_maker_opts {
   return { limit_dialect => 'SkipFirst', %{$self->{_sql_maker_opts}||{}} };
 }
 
-1;
+sub _svp_begin {
+    my ($self, $name) = @_;
 
-__END__
+    $self->_get_dbh->do("SAVEPOINT $name");
+}
 
-=head1 NAME
+# can't release savepoints
+sub _svp_release { 1 }
 
-DBIx::Class::Storage::DBI::Informix - Base Storage Class for INFORMIX Support
+sub _svp_rollback {
+    my ($self, $name) = @_;
 
-=head1 SYNOPSIS
+    $self->_get_dbh->do("ROLLBACK TO SAVEPOINT $name")
+}
 
-=head1 DESCRIPTION
+sub with_deferred_fk_checks {
+  my ($self, $sub) = @_;
+
+  my $txn_scope_guard = $self->txn_scope_guard;
+
+  $self->_do_query('SET CONSTRAINTS ALL DEFERRED');
+
+  my $sg = Scope::Guard->new(sub {
+    $self->_do_query('SET CONSTRAINTS ALL IMMEDIATE');
+  });
+
+  return Context::Preserve::preserve_context(sub { $sub->() },
+    after => sub { $txn_scope_guard->commit });
+}
+
+=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 C<DATE> and
+C<DATETIME> formats.
+
+Sets the following environment variables:
+
+    GL_DATE="%m/%d/%Y"
+    GL_DATETIME="%Y-%m-%d %H:%M:%S%F5"
+
+The C<DBDATE> and C<DBCENTURY> environment variables are cleared.
+
+B<NOTE:> setting the C<GL_DATE> environment variable seems to have no effect
+after the process has started, so the default format is used. The C<GL_DATETIME>
+setting does take effect however.
 
-This class implements storage-specific support for Informix
+The C<DATETIME> data type supports up to 5 digits after the decimal point for
+second precision, depending on how you have declared your column. The full
+possible precision is used.
+
+The column declaration for a C<DATETIME> with maximum precision is:
+
+  column_name DATETIME YEAR TO FRACTION(5)
+
+The C<DATE> data type stores the date portion only, and it B<MUST> be declared
+with:
+
+  data_type => 'date'
+
+in your Result class.
+
+You will need the L<DateTime::Format::Strptime> module for inflation to work.
+
+=cut
+
+sub connect_call_datetime_setup {
+  my $self = shift;
+
+  delete @ENV{qw/DBDATE DBCENTURY/};
+
+  $ENV{GL_DATE}     = "%m/%d/%Y";
+  $ENV{GL_DATETIME} = "%Y-%m-%d %H:%M:%S%F5";
+}
+
+sub datetime_parser_type {
+  'DBIx::Class::Storage::DBI::Informix::DateTime::Format'
+}
+
+package # hide from PAUSE
+  DBIx::Class::Storage::DBI::Informix::DateTime::Format;
+
+my $timestamp_format = '%Y-%m-%d %H:%M:%S.%5N'; # %F %T
+my $date_format      = '%m/%d/%Y';
+
+my ($timestamp_parser, $date_parser);
+
+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);
+}
+
+sub parse_date {
+  shift;
+  require DateTime::Format::Strptime;
+  $date_parser ||= DateTime::Format::Strptime->new(
+    pattern  => $date_format,
+    on_error => 'croak',
+  );
+  return $date_parser->parse_datetime(shift);
+}
+
+sub format_date {
+  shift;
+  require DateTime::Format::Strptime;
+  $date_parser ||= DateTime::Format::Strptime->new(
+    pattern  => $date_format,
+    on_error => 'croak',
+  );
+  return $date_parser->format_datetime(shift);
+}
+
+1;
 
-=head1 AUTHORS
+=head1 AUTHOR
 
-See L<DBIx::Class/CONTRIBUTORS>
+See L<DBIx::Class/AUTHOR> and L<DBIx::Class/CONTRIBUTORS>.
 
 =head1 LICENSE