X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI%2FSQLAnywhere.pm;h=e2efa1338a3762bfa03d1d749766aec52f7eb528;hb=7d3139ac1ff52213e2dad35fc9c9d1057711256a;hp=623a8e1c29dcf539f7d887b6f7e1344144c46756;hpb=2b0076be05baf00b0b4928a237ab43f377233fd4;p=dbsrgits%2FDBIx-Class.git

diff --git a/lib/DBIx/Class/Storage/DBI/SQLAnywhere.pm b/lib/DBIx/Class/Storage/DBI/SQLAnywhere.pm
index 623a8e1..e2efa13 100644
--- a/lib/DBIx/Class/Storage/DBI/SQLAnywhere.pm
+++ b/lib/DBIx/Class/Storage/DBI/SQLAnywhere.pm
@@ -2,13 +2,14 @@ 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 ();
+use List::Util 'first';
+use Try::Tiny;
+use namespace::clean;
 
-__PACKAGE__->mk_group_accessors(simple => qw/
-  _identity
-/);
+__PACKAGE__->mk_group_accessors(simple => qw/_identity/);
+__PACKAGE__->sql_limit_dialect ('RowNumberOver');
 
 =head1 NAME
 
@@ -16,15 +17,15 @@ DBIx::Class::Storage::DBI::SQLAnywhere - Driver for Sybase SQL Anywhere
 
 =head1 DESCRIPTION
 
-This class implements autoincrements for Sybase SQL Anywhere and selects the
-RowNumberOver limit implementation.
+This class implements autoincrements for Sybase SQL Anywhere 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<DBIx::Class::Storage::DBI/connect_info> settings:
+Recommended L<connect_info|DBIx::Class::Storage::DBI/connect_info> settings:
 
   on_connect_call => 'datetime_setup'
 
@@ -34,45 +35,65 @@ Recommended L<DBIx::Class::Storage::DBI/connect_info> settings:
 
 sub last_insert_id { shift->_identity }
 
+sub _new_uuid { 'UUIDTOSTR(NEWID())' }
+
 sub insert {
   my $self = shift;
   my ($source, $to_insert) = @_;
 
-  my $supplied_col_info = $self->_resolve_column_info($source, [keys %$to_insert]);
-
-  my $is_identity_insert = (List::Util::first { $_->{is_auto_increment} } (values %$supplied_col_info) )
-     ? 1
-     : 0;
-
-  my $identity_col = List::Util::first {
-      $source->column_info($_)->{is_auto_increment} 
-  } $source->columns;
+  my $identity_col =
+    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 ((not $is_identity_insert) && $identity_col) {
+  if ($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) = $dbh->selectrow_array("SELECT GET_IDENTITY('$table_name')");
-
-    $to_insert->{$identity_col} = $identity;
+    my ($identity) = try {
+      $dbh->selectrow_array("SELECT GET_IDENTITY('$table_name')")
+    };
 
-    $self->_identity($identity);
+    if (defined $identity) {
+      $to_insert->{$identity_col} = $identity;
+      $self->_identity($identity);
+    }
   }
 
   return $self->next::method(@_);
 }
 
-# this sub stolen from DB2
+# 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;
 
-sub _sql_maker_opts {
-  my ( $self, $opts ) = @_;
+    my $data_type = $col_info->{$selected}{data_type};
 
-  if ( $opts ) {
-    $self->{_sql_maker_opts} = { %$opts };
+    if ($data_type && lc($data_type) eq 'uniqueidentifier') {
+      $select->[$select_idx] = { UUIDTOSTR => $selected };
+    }
   }
 
-  return { limit_dialect => 'RowNumberOver', %{$self->{_sql_maker_opts}||{}} };
+  return $self->next::method(@_);
 }
 
 # this sub stolen from MSSQL
@@ -80,8 +101,13 @@ sub _sql_maker_opts {
 sub build_datetime_parser {
   my $self = shift;
   my $type = "DateTime::Format::Strptime";
-  eval "use ${type}";
-  $self->throw_exception("Couldn't load ${type}: $@") if $@;
+  try {
+    eval "require ${type}"
+  }
+  catch {
+    $self->throw_exception("Couldn't load ${type}: $_");
+  };
+
   return $type->new( pattern => '%Y-%m-%d %H:%M:%S.%6N' );
 }
 
@@ -91,8 +117,8 @@ Used as:
 
     on_connect_call => 'datetime_setup'
 
-In L<DBIx::Class::Storage::DBI/connect_info> to set the date and timestamp
-formats (as temporary options for the session) for use with
+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
@@ -117,8 +143,36 @@ sub connect_call_datetime_setup {
   );
 }
 
+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>.