X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI%2FSQLAnywhere.pm;h=16adca42430130ff4467a03f3c2e65fe76c21a6e;hb=7da56142c171e61e6bec750e80dbb26f595f777e;hp=7d560579989006cfb734befdf8a16bc12331fd2a;hpb=f200d74bc27c2143237595dde6b6913098045114;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Storage/DBI/SQLAnywhere.pm b/lib/DBIx/Class/Storage/DBI/SQLAnywhere.pm
index 7d56057..16adca4 100644
--- a/lib/DBIx/Class/Storage/DBI/SQLAnywhere.pm
+++ b/lib/DBIx/Class/Storage/DBI/SQLAnywhere.pm
@@ -1,19 +1,192 @@
-package # hide from PAUSE
-  DBIx::Class::Storage::DBI::SQLAnywhere;
+package DBIx::Class::Storage::DBI::SQLAnywhere;
 
 use strict;
 use warnings;
-use base qw/DBIx::Class::Storage::DBI/;
+use base qw/DBIx::Class::Storage::DBI::UniqueIdentifier/;
 use mro 'c3';
+use List::Util ();
 
-sub _rebless {
+__PACKAGE__->mk_group_accessors(simple => qw/
+  _identity
+/);
+
+=head1 NAME
+
+DBIx::Class::Storage::DBI::SQLAnywhere - Driver for Sybase SQL Anywhere
+
+=head1 DESCRIPTION
+
+This class implements autoincrements for Sybase SQL Anywhere, selects the
+RowNumberOver limit implementation and provides
+L<DBIx::Class::InflateColumn::DateTime> support.
+
+You need the C<DBD::SQLAnywhere> driver that comes with the SQL Anywhere
+distribution, B<NOT> the one on CPAN. It is usually under a path such as:
+
+  /opt/sqlanywhere11/sdk/perl
+
+Recommended L<connect_info|DBIx::Class::Storage::DBI/connect_info> settings:
+
+  on_connect_call => 'datetime_setup'
+
+=head1 METHODS
+
+=cut
+
+sub last_insert_id { shift->_identity }
+
+sub _new_uuid { 'UUIDTOSTR(NEWID())' }
+
+sub insert {
+  my $self = shift;
+  my ($source, $to_insert) = @_;
+
+  my $identity_col = List::Util::first {
+      $source->column_info($_)->{is_auto_increment} 
+  } $source->columns;
+
+# user might have an identity PK without is_auto_increment
+  if (not $identity_col) {
+    foreach my $pk_col ($source->primary_columns) {
+      if (not exists $to_insert->{$pk_col} &&
+          $source->column_info($pk_col)->{data_type} !~ /^uniqueidentifier/i)
+      {
+        $identity_col = $pk_col;
+        last;
+      }
+    }
+  }
+
+  if ($identity_col && (not exists $to_insert->{$identity_col})) {
+    my $dbh = $self->_get_dbh;
+    my $table_name = $source->from;
+    $table_name    = $$table_name if ref $table_name;
+
+    my ($identity) = eval {
+      local $@; $dbh->selectrow_array("SELECT GET_IDENTITY('$table_name')")
+    };
+
+    if (defined $identity) {
+      $to_insert->{$identity_col} = $identity;
+      $self->_identity($identity);
+    }
+  }
+
+  return $self->next::method(@_);
+}
+
+# convert UUIDs to strings in selects
+sub _select_args {
   my $self = shift;
+  my ($ident, $select) = @_;
+
+  my $col_info = $self->_resolve_column_info($ident);
+
+  for my $select_idx (0..$#$select) {
+    my $selected = $select->[$select_idx];
+
+    next if ref $selected;
+
+    my $data_type = $col_info->{$selected}{data_type};
+
+    if ($data_type && lc($data_type) eq 'uniqueidentifier') {
+      $select->[$select_idx] = { UUIDTOSTR => $selected };
+    }
+  }
+
+  return $self->next::method(@_);
+}
+
+# this sub stolen from DB2
+
+sub _sql_maker_opts {
+  my ( $self, $opts ) = @_;
 
-  if (ref $self eq __PACKAGE__) {
-    require DBIx::Class::Storage::DBI::Sybase::ASA;
-    bless $self, 'DBIx::Class::Storage::DBI::Sybase::ASA';
-    $self->_rebless;
+  if ( $opts ) {
+    $self->{_sql_maker_opts} = { %$opts };
   }
+
+  return { limit_dialect => 'RowNumberOver', %{$self->{_sql_maker_opts}||{}} };
+}
+
+# this sub stolen from MSSQL
+
+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.%6N' );
+}
+
+=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 (as temporary options for the session) for use with
+L<DBIx::Class::InflateColumn::DateTime>.
+
+The C<TIMESTAMP> data type supports up to 6 digits after the decimal point for
+second precision. The full precision is used.
+
+The C<DATE> data type supposedly stores hours and minutes too, according to the
+documentation, but I could not get that to work. It seems to only store the
+date.
+
+You will need the L<DateTime::Format::Strptime> module for inflation to work.
+
+=cut
+
+sub connect_call_datetime_setup {
+  my $self = shift;
+
+  $self->_do_query(
+    "set temporary option timestamp_format = 'yyyy-mm-dd hh:mm:ss.ssssss'"
+  );
+  $self->_do_query(
+    "set temporary option date_format      = 'yyyy-mm-dd hh:mm:ss.ssssss'"
+  );
+}
+
+sub _svp_begin {
+    my ($self, $name) = @_;
+
+    $self->_get_dbh->do("SAVEPOINT $name");
+}
+
+# can't release savepoints that have been rolled back
+sub _svp_release { 1 }
+
+sub _svp_rollback {
+    my ($self, $name) = @_;
+
+    $self->_get_dbh->do("ROLLBACK TO SAVEPOINT $name")
 }
 
 1;
+
+=head1 MAXIMUM CURSORS
+
+A L<DBIx::Class> application can use a lot of cursors, due to the usage of
+L<prepare_cached|DBI/prepare_cached>.
+
+The default cursor maximum is C<50>, which can be a bit too low. This limit can
+be turned off (or increased) by the DBA by executing:
+
+  set option max_statement_count = 0
+  set option max_cursor_count    = 0
+
+Highly recommended.
+
+=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