X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FDBIx%2FClass%2FStorage%2FDBI.pm;h=dcc41774fd98e53c8a2ec2bec6b382423a5488ce;hb=e673f01110e7608df0645d6c3728a799d9222cb6;hp=c218ef1d6cc8362be2401744b2174964699bac88;hpb=9292561714255448d9ac3aa96eaacb287537ab24;p=dbsrgits%2FDBIx-Class-Historic.git

diff --git a/lib/DBIx/Class/Storage/DBI.pm b/lib/DBIx/Class/Storage/DBI.pm
index c218ef1..dcc4177 100644
--- a/lib/DBIx/Class/Storage/DBI.pm
+++ b/lib/DBIx/Class/Storage/DBI.pm
@@ -1,4 +1,7 @@
 package DBIx::Class::Storage::DBI;
+# -*- mode: cperl; cperl-indent-level: 2 -*-
+
+use base 'DBIx::Class::Storage';
 
 use strict;
 use warnings;
@@ -16,9 +19,34 @@ use base qw/SQL::Abstract::Limit/;
 
 sub select {
   my ($self, $table, $fields, $where, $order, @rest) = @_;
+  $table = $self->_quote($table) unless ref($table);
   @rest = (-1) unless defined $rest[0];
-  $self->SUPER::select($table, $self->_recurse_fields($fields), 
-                         $where, $order, @rest);
+  local $self->{having_bind} = [];
+  my ($sql, @ret) = $self->SUPER::select(
+    $table, $self->_recurse_fields($fields), $where, $order, @rest
+  );
+  return wantarray ? ($sql, @ret, @{$self->{having_bind}}) : $sql;
+}
+
+sub insert {
+  my $self = shift;
+  my $table = shift;
+  $table = $self->_quote($table) unless ref($table);
+  $self->SUPER::insert($table, @_);
+}
+
+sub update {
+  my $self = shift;
+  my $table = shift;
+  $table = $self->_quote($table) unless ref($table);
+  $self->SUPER::update($table, @_);
+}
+
+sub delete {
+  my $self = shift;
+  my $table = shift;
+  $table = $self->_quote($table) unless ref($table);
+  $self->SUPER::delete($table, @_);
 }
 
 sub _emulate_limit {
@@ -49,20 +77,35 @@ sub _recurse_fields {
 sub _order_by {
   my $self = shift;
   my $ret = '';
+  my @extra;
   if (ref $_[0] eq 'HASH') {
     if (defined $_[0]->{group_by}) {
       $ret = $self->_sqlcase(' group by ')
                .$self->_recurse_fields($_[0]->{group_by});
     }
+    if (defined $_[0]->{having}) {
+      my $frag;
+      ($frag, @extra) = $self->_recurse_where($_[0]->{having});
+      push(@{$self->{having_bind}}, @extra);
+      $ret .= $self->_sqlcase(' having ').$frag;
+    }
     if (defined $_[0]->{order_by}) {
       $ret .= $self->SUPER::_order_by($_[0]->{order_by});
     }
+  } elsif(ref $_[0] eq 'SCALAR') {
+    $ret = $self->_sqlcase(' order by ').${ $_[0] };
   } else {
     $ret = $self->SUPER::_order_by(@_);
   }
   return $ret;
 }
 
+sub _order_directions {
+  my ($self, $order) = @_;
+  $order = $order->{order_by} if ref $order eq 'HASH';
+  return $self->SUPER::_order_directions($order);
+}
+
 sub _table {
   my ($self, $from) = @_;
   if (ref $from eq 'ARRAY') {
@@ -70,7 +113,12 @@ sub _table {
   } elsif (ref $from eq 'HASH') {
     return $self->_make_as($from);
   } else {
-    return $from;
+    return $from; # would love to quote here but _table ends up getting called
+                  # twice during an ->select without a limit clause due to
+                  # the way S::A::Limit->select works. should maybe consider
+                  # bypassing this and doing S::A::select($self, ...) in
+                  # our select method above. meantime, quoting shims have
+                  # been added to select/insert/update/delete here
   }
 }
 
@@ -103,7 +151,7 @@ sub _recurse_from {
 sub _make_as {
   my ($self, $from) = @_;
   return join(' ', map { (ref $_ eq 'SCALAR' ? $$_ : $self->_quote($_)) }
-                           reverse each %{$self->_skip_options($from)});
+                     reverse each %{$self->_skip_options($from)});
 }
 
 sub _skip_options {
@@ -118,7 +166,9 @@ sub _join_condition {
   my ($self, $cond) = @_;
   if (ref $cond eq 'HASH') {
     my %j;
-    for (keys %$cond) { my $x = '= '.$self->_quote($cond->{$_}); $j{$_} = \$x; };
+    for (keys %$cond) {
+      my $x = '= '.$self->_quote($cond->{$_}); $j{$_} = \$x;
+    };
     return $self->_recurse_where(\%j);
   } elsif (ref $cond eq 'ARRAY') {
     return join(' OR ', map { $self->_join_condition($_) } @$cond);
@@ -130,9 +180,27 @@ sub _join_condition {
 sub _quote {
   my ($self, $label) = @_;
   return '' unless defined $label;
+  return "*" if $label eq '*';
+  return $label unless $self->{quote_char};
+  if(ref $self->{quote_char} eq "ARRAY"){
+    return $self->{quote_char}->[0] . $label . $self->{quote_char}->[1]
+      if !defined $self->{name_sep};
+    my $sep = $self->{name_sep};
+    return join($self->{name_sep},
+        map { $self->{quote_char}->[0] . $_ . $self->{quote_char}->[1]  }
+       split(/\Q$sep\E/,$label));
+  }
   return $self->SUPER::_quote($label);
 }
 
+sub _RowNum {
+   my $self = shift;
+   my $c;
+   $_[0] =~ s/SELECT (.*?) FROM/
+     'SELECT '.join(', ', map { $_.' AS col'.++$c } split(', ', $1)).' FROM'/e;
+   $self->SUPER::_RowNum(@_);
+}
+
 # Accessor for setting limit dialect. This is useful
 # for JDBC-bridge among others where the remote SQL-dialect cannot
 # be determined by the name of the driver alone.
@@ -143,6 +211,21 @@ sub limit_dialect {
     return $self->{limit_dialect};
 }
 
+sub quote_char {
+    my $self = shift;
+    $self->{quote_char} = shift if @_;
+    return $self->{quote_char};
+}
+
+sub name_sep {
+    my $self = shift;
+    $self->{name_sep} = shift if @_;
+    return $self->{name_sep};
+}
+
+
+
+
 package DBIx::Class::Storage::DBI::DebugCallback;
 
 sub print {
@@ -158,7 +241,8 @@ use base qw/DBIx::Class/;
 __PACKAGE__->load_components(qw/AccessorGroup/);
 
 __PACKAGE__->mk_group_accessors('simple' =>
-  qw/connect_info _dbh _sql_maker debug debugfh cursor on_connect_do transaction_depth/);
+  qw/_connect_info _dbh _sql_maker _conn_pid _conn_tid debug debugfh
+     cursor on_connect_do transaction_depth/);
 
 sub new {
   my $new = bless({}, ref $_[0] || $_[0]);
@@ -166,7 +250,8 @@ sub new {
   $new->transaction_depth(0);
   if (defined($ENV{DBIX_CLASS_STORAGE_DBI_DEBUG}) &&
      ($ENV{DBIX_CLASS_STORAGE_DBI_DEBUG} =~ /=(.+)$/)) {
-    $new->debugfh(IO::File->new($1, 'w')||croak "Cannot open trace file $1");
+    $new->debugfh(IO::File->new($1, 'w'))
+      or $new->throw_exception("Cannot open trace file $1");
   } else {
     $new->debugfh(IO::File->new('>&STDERR'));
   }
@@ -174,7 +259,12 @@ sub new {
   return $new;
 }
 
-=head1 NAME 
+sub throw_exception {
+  my ($self, $msg) = @_;
+  croak($msg);
+}
+
+=head1 NAME
 
 DBIx::Class::Storage::DBI - DBI storage handler
 
@@ -188,6 +278,25 @@ This class represents the connection to the database
 
 =cut
 
+=head2 connect_info
+
+Connection information arrayref.  Can either be the same arguments
+one would pass to DBI->connect, or a code-reference which returns
+a connected database handle.  In either case, there is an optional
+final element in the arrayref, which can hold a hashref of
+connection-specific Storage::DBI options.  These include
+C<on_connect_do>, and the sql_maker options C<limit_dialect>,
+C<quote_char>, and C<name_sep>.  Examples:
+
+  ->connect_info([ 'dbi:SQLite:./foo.db' ]);
+  ->connect_info(sub { DBI->connect(...) });
+  ->connect_info([ 'dbi:Pg:dbname=foo',
+                   'postgres',
+                   '',
+                   { AutoCommit => 0 },
+                   { quote_char => q{`}, name_sep => q{@} },
+                 ]);
+
 =head2 on_connect_do
 
 Executes the sql statements given as a listref on every db connect.
@@ -232,8 +341,20 @@ sub disconnect {
 sub connected {
   my ($self) = @_;
 
-  my $dbh;
-  (($dbh = $self->_dbh) && $dbh->FETCH('Active') && $dbh->ping)
+  if(my $dbh = $self->_dbh) {
+      if(defined $self->_conn_tid && $self->_conn_tid != threads->tid) {
+          $self->_sql_maker(undef);
+          return $self->_dbh(undef);
+      }
+      elsif($self->_conn_pid != $$) {
+          $self->_dbh->{InactiveDestroy} = 1;
+          $self->_sql_maker(undef);
+          return $self->_dbh(undef)
+      }
+      return ($dbh->FETCH('Active') && $dbh->ping);
+  }
+
+  return 0;
 }
 
 sub ensure_connected {
@@ -244,6 +365,12 @@ sub ensure_connected {
   }
 }
 
+=head2 dbh
+
+Returns the dbh - a data base handle of class L<DBI>.
+
+=cut
+
 sub dbh {
   my ($self) = @_;
 
@@ -259,31 +386,105 @@ sub sql_maker {
   return $self->_sql_maker;
 }
 
+sub connect_info {
+    my ($self, $info_arg) = @_;
+
+    if($info_arg) {
+        my $info = [ @$info_arg ]; # copy because we can alter it
+        my $last_info = $info->[-1];
+        if(ref $last_info eq 'HASH') {
+            my $used;
+            if(my $on_connect_do = $last_info->{on_connect_do}) {
+               $used = 1;
+               $self->on_connect_do($on_connect_do);
+            }
+            for my $sql_maker_opt (qw/limit_dialect quote_char name_sep/) {
+                if(my $opt_val = $last_info->{$sql_maker_opt}) {
+                    $used = 1;
+                    $self->sql_maker->$sql_maker_opt($opt_val);
+                }
+            }
+
+            # remove our options hashref if it was there, to avoid confusing
+            #   DBI in the case the user didn't use all 4 DBI options, as in:
+            #   [ 'dbi:SQLite:foo.db', { quote_char => q{`} } ]
+            pop(@$info) if $used;
+        }
+
+        $self->_connect_info($info);
+    }
+
+    $self->_connect_info;
+}
+
 sub _populate_dbh {
   my ($self) = @_;
-  my @info = @{$self->connect_info || []};
+  my @info = @{$self->_connect_info || []};
   $self->_dbh($self->_connect(@info));
-
+  my $driver = $self->_dbh->{Driver}->{Name};
+  eval "require DBIx::Class::Storage::DBI::${driver}";
+  unless ($@) {
+    bless $self, "DBIx::Class::Storage::DBI::${driver}";
+  }
   # if on-connect sql statements are given execute them
   foreach my $sql_statement (@{$self->on_connect_do || []}) {
     $self->_dbh->do($sql_statement);
   }
+
+  $self->_conn_pid($$);
+  $self->_conn_tid(threads->tid) if $INC{'threads.pm'};
 }
 
 sub _connect {
   my ($self, @info) = @_;
-  return DBI->connect(@info);
+
+  $self->throw_exception("You failed to provide any connection info")
+      if !@info;
+
+  my ($old_connect_via, $dbh);
+
+  if ($INC{'Apache/DBI.pm'} && $ENV{MOD_PERL}) {
+      $old_connect_via = $DBI::connect_via;
+      $DBI::connect_via = 'connect';
+  }
+
+  eval {
+    if(ref $info[0] eq 'CODE') {
+        $dbh = &{$info[0]};
+    }
+    else {
+        $dbh = DBI->connect(@info);
+    }
+  };
+
+  $DBI::connect_via = $old_connect_via if $old_connect_via;
+
+  if (!$dbh || $@) {
+    $self->throw_exception("DBI Connection failed: " . ($@ || $DBI::errstr));
+  }
+
+  $dbh;
 }
 
 =head2 txn_begin
 
 Calls begin_work on the current dbh.
 
+See L<DBIx::Class::Schema> for the txn_do() method, which allows for
+an entire code block to be executed transactionally.
+
 =cut
 
 sub txn_begin {
   my $self = shift;
-  $self->dbh->begin_work if $self->{transaction_depth}++ == 0 and $self->dbh->{AutoCommit};
+  if ($self->{transaction_depth}++ == 0) {
+    my $dbh = $self->dbh;
+    if ($dbh->{AutoCommit}) {
+      $self->debugfh->print("BEGIN WORK\n")
+        if ($self->debug);
+      $dbh->begin_work;
+    }
+  }
 }
 
 =head2 txn_commit
@@ -295,26 +496,60 @@ Issues a commit against the current dbh.
 sub txn_commit {
   my $self = shift;
   if ($self->{transaction_depth} == 0) {
-    $self->dbh->commit unless $self->dbh->{AutoCommit};
+    my $dbh = $self->dbh;
+    unless ($dbh->{AutoCommit}) {
+      $self->debugfh->print("COMMIT\n")
+        if ($self->debug);
+      $dbh->commit;
+    }
   }
   else {
-    $self->dbh->commit if --$self->{transaction_depth} == 0;    
+    if (--$self->{transaction_depth} == 0) {
+      $self->debugfh->print("COMMIT\n")
+        if ($self->debug);
+      $self->dbh->commit;
+    }
   }
 }
 
 =head2 txn_rollback
 
-Issues a rollback against the current dbh.
+Issues a rollback against the current dbh. A nested rollback will
+throw a L<DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION> exception,
+which allows the rollback to propagate to the outermost transaction.
 
 =cut
 
 sub txn_rollback {
   my $self = shift;
-  if ($self->{transaction_depth} == 0) {
-    $self->dbh->rollback unless $self->dbh->{AutoCommit};
-  }
-  else {
-    --$self->{transaction_depth} == 0 ? $self->dbh->rollback : die $@;    
+
+  eval {
+    if ($self->{transaction_depth} == 0) {
+      my $dbh = $self->dbh;
+      unless ($dbh->{AutoCommit}) {
+        $self->debugfh->print("ROLLBACK\n")
+          if ($self->debug);
+        $dbh->rollback;
+      }
+    }
+    else {
+      if (--$self->{transaction_depth} == 0) {
+        $self->debugfh->print("ROLLBACK\n")
+          if ($self->debug);
+        $self->dbh->rollback;
+      }
+      else {
+        die DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION->new;
+      }
+    }
+  };
+
+  if ($@) {
+    my $error = $@;
+    my $exception_class = "DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION";
+    $error =~ /$exception_class/ and $self->throw_exception($error);
+    $self->{transaction_depth} = 0;          # ensure that a failed rollback
+    $self->throw_exception($error);          # resets the transaction depth
   }
 }
 
@@ -323,24 +558,36 @@ sub _execute {
   my ($sql, @bind) = $self->sql_maker->$op($ident, @args);
   unshift(@bind, @$extra_bind) if $extra_bind;
   if ($self->debug) {
-      my @debug_bind = map { defined $_ ? $_ : 'NULL' } @bind;
-      $self->debugfh->print("$sql: @debug_bind\n");
+      my @debug_bind = map { defined $_ ? qq{'$_'} : q{'NULL'} } @bind;
+      $self->debugfh->print("$sql: " . join(', ', @debug_bind) . "\n");
   }
-  my $sth = $self->sth($sql,$op);
+  my $sth = eval { $self->sth($sql,$op) };
+
+  if (!$sth || $@) {
+    $self->throw_exception('no sth generated via sql (' . ($@ || $self->_dbh->errstr) . "): $sql");
+  }
+
   @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
   my $rv;
-  if ($sth) {  
-    $rv = $sth->execute(@bind);
-  } else { 
-    croak "'$sql' did not generate a statement.";
+  if ($sth) {
+    $rv = eval { $sth->execute(@bind) };
+
+    if ($@ || !$rv) {
+      $self->throw_exception("Error executing '$sql': ".($@ || $sth->errstr));
+    }
+  } else {
+    $self->throw_exception("'$sql' did not generate a statement.");
   }
   return (wantarray ? ($rv, $sth, @bind) : $rv);
 }
 
 sub insert {
   my ($self, $ident, $to_insert) = @_;
-  croak( "Couldn't insert ".join(', ', map "$_ => $to_insert->{$_}", keys %$to_insert)." into ${ident}" )
-    unless ($self->_execute('insert' => [], $ident, $to_insert));
+  $self->throw_exception(
+    "Couldn't insert ".join(', ',
+      map "$_ => $to_insert->{$_}", keys %$to_insert
+    )." into ${ident}"
+  ) unless ($self->_execute('insert' => [], $ident, $to_insert));
   return $to_insert;
 }
 
@@ -358,9 +605,12 @@ sub _select {
   if (ref $condition eq 'SCALAR') {
     $order = $1 if $$condition =~ s/ORDER BY (.*)$//i;
   }
-  if (exists $attrs->{group_by}) {
-    $order = { group_by => $attrs->{group_by},
-               ($order ? (order_by => $order) : ()) };
+  if (exists $attrs->{group_by} || $attrs->{having}) {
+    $order = {
+      group_by => $attrs->{group_by},
+      having => $attrs->{having},
+      ($order ? (order_by => $order) : ())
+    };
   }
   my @args = ('select', $attrs->{bind}, $ident, $select, $condition, $order);
   if ($attrs->{software_limit} ||
@@ -401,27 +651,165 @@ Returns database type info for a given table columns.
 =cut
 
 sub columns_info_for {
-    my ($self, $table) = @_;
+  my ($self, $table) = @_;
+
+  my $dbh = $self->dbh;
+
+  if ($dbh->can('column_info')) {
     my %result;
-    if ( $self->dbh->can( 'column_info' ) ){
-        my $sth = $self->dbh->column_info( undef, undef, $table, '%' );
-        $sth->execute();
-        while ( my $info = $sth->fetchrow_hashref() ){
-            my %column_info;
-            $column_info{data_type} = $info->{TYPE_NAME};
-            $column_info{size} = $info->{COLUMN_SIZE};
-            $column_info{is_nullable} = $info->{NULLABLE};
-            $result{$info->{COLUMN_NAME}} = \%column_info;
-        }
-    }else{
-        my $sth = $self->dbh->prepare("SELECT * FROM $table WHERE 1=0");
-        $sth->execute;
-        my @columns = @{$sth->{NAME}};
-        for my $i ( 0 .. $#columns ){
-            $result{$columns[$i]}{data_type} = $sth->{TYPE}->[$i];
-        }
+    my $old_raise_err = $dbh->{RaiseError};
+    my $old_print_err = $dbh->{PrintError};
+    $dbh->{RaiseError} = 1;
+    $dbh->{PrintError} = 0;
+    eval {
+      my $sth = $dbh->column_info( undef, undef, $table, '%' );
+      $sth->execute();
+      while ( my $info = $sth->fetchrow_hashref() ){
+        my %column_info;
+        $column_info{data_type}   = $info->{TYPE_NAME};
+        $column_info{size}      = $info->{COLUMN_SIZE};
+        $column_info{is_nullable}   = $info->{NULLABLE} ? 1 : 0;
+        $column_info{default_value} = $info->{COLUMN_DEF};
+
+        $result{$info->{COLUMN_NAME}} = \%column_info;
+      }
+    };
+    $dbh->{RaiseError} = $old_raise_err;
+    $dbh->{PrintError} = $old_print_err;
+    return \%result if !$@;
+  }
+
+  my %result;
+  my $sth = $dbh->prepare("SELECT * FROM $table WHERE 1=0");
+  $sth->execute;
+  my @columns = @{$sth->{NAME_lc}};
+  for my $i ( 0 .. $#columns ){
+    my %column_info;
+    my $type_num = $sth->{TYPE}->[$i];
+    my $type_name;
+    if(defined $type_num && $dbh->can('type_info')) {
+      my $type_info = $dbh->type_info($type_num);
+      $type_name = $type_info->{TYPE_NAME} if $type_info;
     }
-    return \%result;
+    $column_info{data_type} = $type_name ? $type_name : $type_num;
+    $column_info{size} = $sth->{PRECISION}->[$i];
+    $column_info{is_nullable} = $sth->{NULLABLE}->[$i] ? 1 : 0;
+
+    if ($column_info{data_type} =~ m/^(.*?)\((.*?)\)$/) {
+      $column_info{data_type} = $1;
+      $column_info{size}    = $2;
+    }
+
+    $result{$columns[$i]} = \%column_info;
+  }
+
+  return \%result;
+}
+
+sub last_insert_id {
+  my ($self, $row) = @_;
+    
+  return $self->dbh->func('last_insert_rowid');
+
+}
+
+sub sqlt_type { shift->dbh->{Driver}->{Name} }
+
+sub create_ddl_dir
+{
+  my ($self, $schema, $databases, $version, $dir, $sqltargs) = @_;
+
+  if(!$dir || !-d $dir)
+  {
+    warn "No directory given, using ./\n";
+    $dir = "./";
+  }
+  $databases ||= ['MySQL', 'SQLite', 'PostgreSQL'];
+  $databases = [ $databases ] if(ref($databases) ne 'ARRAY');
+  $version ||= $schema->VERSION || '1.x';
+
+  eval "use SQL::Translator";
+  $self->throw_exception("Can't deploy without SQL::Translator: $@") if $@;
+
+  my $sqlt = SQL::Translator->new({
+#      debug => 1,
+      add_drop_table => 1,
+  });
+  foreach my $db (@$databases)
+  {
+    $sqlt->reset();
+    $sqlt->parser('SQL::Translator::Parser::DBIx::Class');
+#    $sqlt->parser_args({'DBIx::Class' => $schema);
+    $sqlt->data($schema);
+    $sqlt->producer($db);
+
+    my $file;
+    my $filename = $schema->ddl_filename($db, $dir, $version);
+    if(-e $filename)
+    {
+      $self->throw_exception("$filename already exists, skipping $db");
+      next;
+    }
+    open($file, ">$filename") 
+      or $self->throw_exception("Can't open $filename for writing ($!)");
+    my $output = $sqlt->translate;
+#use Data::Dumper;
+#    print join(":", keys %{$schema->source_registrations});
+#    print Dumper($sqlt->schema);
+    if(!$output)
+    {
+      $self->throw_exception("Failed to translate to $db. (" . $sqlt->error . ")");
+      next;
+    }
+    print $file $output;
+    close($file);
+  }
+
+}
+
+sub deployment_statements {
+  my ($self, $schema, $type, $version, $dir, $sqltargs) = @_;
+  $type ||= $self->sqlt_type;
+  $version ||= $schema->VERSION || '1.x';
+  $dir ||= './';
+#   eval "use SQL::Translator";
+#   $self->throw_exception("Can't deploy without SQL::Translator: $@") if $@;
+#   eval "use SQL::Translator::Parser::DBIx::Class;";
+#   $self->throw_exception($@) if $@;
+#   eval "use SQL::Translator::Producer::${type};";
+#   $self->throw_exception($@) if $@;
+#   my $tr = SQL::Translator->new(%$sqltargs);
+#   SQL::Translator::Parser::DBIx::Class::parse( $tr, $schema );
+#   return "SQL::Translator::Producer::${type}"->can('produce')->($tr);
+
+  my $filename = $schema->ddl_filename($type, $dir, $version);
+  if(!-f $filename)
+  {
+      $schema->create_ddl_dir([ $type ], $version, $dir, $sqltargs);
+  }
+  my $file;
+  open($file, "<$filename") 
+      or $self->throw_exception("Can't open $filename ($!)");
+  my @rows = <$file>;
+  close($file);
+
+  return join('', @rows);
+  
+}
+
+sub deploy {
+  my ($self, $schema, $type, $sqltargs) = @_;
+  foreach my $statement ( $self->deployment_statements($schema, $type, undef, undef, $sqltargs) ) {
+    for ( split(";\n", $statement)) {
+      next if($_ =~ /^--/);
+      next if(!$_);
+#      next if($_ =~ /^DROP/m);
+      next if($_ =~ /^BEGIN TRANSACTION/m);
+      next if($_ =~ /^COMMIT/m);
+      $self->debugfh->print("$_\n") if $self->debug;
+      $self->dbh->do($_) or warn "SQL was:\n $_";
+    }
+  }
 }
 
 sub DESTROY { shift->disconnect }