package DBIx::Class::Storage::DBI;
+# -*- mode: cperl; cperl-indent-level: 2 -*-
+
+use base 'DBIx::Class::Storage';
use strict;
use warnings;
use DBI;
use SQL::Abstract::Limit;
use DBIx::Class::Storage::DBI::Cursor;
+use IO::File;
+use Carp::Clan qw/DBIx::Class/;
BEGIN {
-package DBIC::SQL::Abstract; # Temporary. Merge upstream.
+package DBIC::SQL::Abstract; # Would merge upstream, but nate doesn't reply :(
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];
+ 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 {
+ my $self = shift;
+ if ($_[3] == -1) {
+ return $_[1].$self->_order_by($_[2]);
+ } else {
+ return $self->SUPER::_emulate_limit(@_);
+ }
+}
+
+sub _recurse_fields {
+ my ($self, $fields) = @_;
+ my $ref = ref $fields;
+ return $self->_quote($fields) unless $ref;
+ return $$fields if $ref eq 'SCALAR';
+
+ if ($ref eq 'ARRAY') {
+ return join(', ', map { $self->_recurse_fields($_) } @$fields);
+ } elsif ($ref eq 'HASH') {
+ foreach my $func (keys %$fields) {
+ return $self->_sqlcase($func)
+ .'( '.$self->_recurse_fields($fields->{$func}).' )';
+ }
+ }
+}
+
+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') {
} 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
}
}
foreach my $j (@join) {
my ($to, $on) = @$j;
- # check whether a join type exists
- my $join_clause = '';
- if (ref($to) eq 'HASH' and exists($to->{-join_type})) {
- $join_clause = ' '.uc($to->{-join_type}).' JOIN ';
- } else {
- $join_clause = ' JOIN ';
- }
+ # check whether a join type exists
+ my $join_clause = '';
+ if (ref($to) eq 'HASH' and exists($to->{-join_type})) {
+ $join_clause = ' '.uc($to->{-join_type}).' JOIN ';
+ } else {
+ $join_clause = ' JOIN ';
+ }
push(@sqlf, $join_clause);
if (ref $to eq 'ARRAY') {
sub _make_as {
my ($self, $from) = @_;
- return join(' ', map { $self->_quote($_) }
- reverse each %{$self->_skip_options($from)});
+ return join(' ', map { (ref $_ eq 'SCALAR' ? $$_ : $self->_quote($_)) }
+ reverse each %{$self->_skip_options($from)});
}
sub _skip_options {
- my ($self, $hash) = @_;
- my $clean_hash = {};
- $clean_hash->{$_} = $hash->{$_}
- for grep {!/^-/} keys %$hash;
- return $clean_hash;
+ my ($self, $hash) = @_;
+ my $clean_hash = {};
+ $clean_hash->{$_} = $hash->{$_}
+ for grep {!/^-/} keys %$hash;
+ return $clean_hash;
}
sub _join_condition {
my ($self, $cond) = @_;
- die "no chance" unless ref $cond eq 'HASH';
- my %j;
- for (keys %$cond) { my $x = '= '.$self->_quote($cond->{$_}); $j{$_} = \$x; };
- return $self->_recurse_where(\%j);
+ if (ref $cond eq 'HASH') {
+ my %j;
+ for (keys %$cond) {
+ my $x = '= '.$self->_quote($cond->{$_}); $j{$_} = \$x;
+ };
+ return $self->_recurse_where(\%j);
+ } elsif (ref $cond eq 'ARRAY') {
+ return join(' OR ', map { $self->_join_condition($_) } @$cond);
+ } else {
+ die "Can't handle this yet!";
+ }
}
sub _quote {
my ($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.
+#
+sub limit_dialect {
+ my $self = shift;
+ $self->{limit_dialect} = shift if @_;
+ 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 $self->{name_sep};
+}
+
+
+
+
+package DBIx::Class::Storage::DBI::DebugCallback;
+
+sub print {
+ my ($self, $string) = @_;
+ $string =~ m/^(\w+)/;
+ ${$self}->($1, $string);
+}
+
} # End of BEGIN block
use base qw/DBIx::Class/;
-__PACKAGE__->load_components(qw/Exception AccessorGroup/);
+__PACKAGE__->load_components(qw/AccessorGroup/);
__PACKAGE__->mk_group_accessors('simple' =>
- qw/connect_info _dbh _sql_maker debug cursor/);
+ 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]);
$new->cursor("DBIx::Class::Storage::DBI::Cursor");
+ $new->transaction_depth(0);
+ if (defined($ENV{DBIX_CLASS_STORAGE_DBI_DEBUG}) &&
+ ($ENV{DBIX_CLASS_STORAGE_DBI_DEBUG} =~ /=(.+)$/)) {
+ $new->debugfh(IO::File->new($1, 'w'))
+ or $new->throw_exception("Cannot open trace file $1");
+ } else {
+ $new->debugfh(IO::File->new('>&STDERR'));
+ }
$new->debug(1) if $ENV{DBIX_CLASS_STORAGE_DBI_DEBUG};
return $new;
}
-=head1 NAME
+sub throw_exception {
+ my ($self, $msg) = @_;
+ croak($msg);
+}
+
+=head1 NAME
DBIx::Class::Storage::DBI - DBI storage handler
=head1 METHODS
-=over 4
+=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.
+
+=head2 debug
+
+Causes SQL trace information to be emitted on C<debugfh> filehandle
+(or C<STDERR> if C<debugfh> has not specifically been set).
+
+=head2 debugfh
+
+Sets or retrieves the filehandle used for trace/debug output. This
+should be an IO::Handle compatible object (only the C<print> method is
+used). Initially set to be STDERR - although see information on the
+L<DBIX_CLASS_STORAGE_DBI_DEBUG> environment variable.
+
+=head2 debugcb
+
+Sets a callback to be executed each time a statement is run; takes a sub
+reference. Overrides debugfh. Callback is executed as $sub->($op, $info)
+where $op is SELECT/INSERT/UPDATE/DELETE and $info is what would normally
+be printed.
=cut
-sub dbh {
+sub debugcb {
+ my ($self, $cb) = @_;
+ my $cb_obj = bless(\$cb, 'DBIx::Class::Storage::DBI::DebugCallback');
+ $self->debugfh($cb_obj);
+}
+
+sub disconnect {
+ my ($self) = @_;
+
+ if( $self->connected ) {
+ $self->_dbh->rollback unless $self->_dbh->{AutoCommit};
+ $self->_dbh->disconnect;
+ $self->_dbh(undef);
+ }
+}
+
+sub connected {
+ my ($self) = @_;
+
+ 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 != $$) {
+ $self->_dbh->{InactiveDestroy} = 1;
+ $self->_sql_maker(undef);
+ return $self->_dbh(undef)
+ }
+ return ($dbh->FETCH('Active') && $dbh->ping);
+ }
+
+ return 0;
+}
+
+sub ensure_connected {
my ($self) = @_;
- my $dbh;
- unless (($dbh = $self->_dbh) && $dbh->FETCH('Active') && $dbh->ping) {
+
+ unless ($self->connected) {
$self->_populate_dbh;
}
+}
+
+=head2 dbh
+
+Returns the dbh - a data base handle of class L<DBI>.
+
+=cut
+
+sub dbh {
+ my ($self) = @_;
+
+ $self->ensure_connected;
return $self->_dbh;
}
return $self->_sql_maker;
}
+sub connect_info {
+ my ($self, $info_arg) = @_;
+
+ if($info_arg) {
+ my $info = [ @$info_arg ]; # copy because we can alter it
+ my $last_info = $info->[-1];
+ if(ref $last_info eq 'HASH') {
+ my $used;
+ if(my $on_connect_do = $last_info->{on_connect_do}) {
+ $used = 1;
+ $self->on_connect_do($on_connect_do);
+ }
+ for my $sql_maker_opt (qw/limit_dialect quote_char name_sep/) {
+ if(my $opt_val = $last_info->{$sql_maker_opt}) {
+ $used = 1;
+ $self->sql_maker->$sql_maker_opt($opt_val);
+ }
+ }
+
+ # remove our options hashref if it was there, to avoid confusing
+ # DBI in the case the user didn't use all 4 DBI options, as in:
+ # [ 'dbi:SQLite:foo.db', { quote_char => q{`} } ]
+ pop(@$info) if $used;
+ }
+
+ $self->_connect_info($info);
+ }
+
+ $self->_connect_info;
+}
+
sub _populate_dbh {
my ($self) = @_;
- my @info = @{$self->connect_info || []};
+ my @info = @{$self->_connect_info || []};
$self->_dbh($self->_connect(@info));
+ my $driver = $self->_dbh->{Driver}->{Name};
+ eval "require DBIx::Class::Storage::DBI::${driver}";
+ unless ($@) {
+ bless $self, "DBIx::Class::Storage::DBI::${driver}";
+ }
+ # if on-connect sql statements are given execute them
+ foreach my $sql_statement (@{$self->on_connect_do || []}) {
+ $self->_dbh->do($sql_statement);
+ }
+
+ $self->_conn_pid($$);
+ $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;
}
-=item commit
+=head2 txn_begin
- $class->commit;
+Calls begin_work on the current dbh.
-Issues a commit again 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 commit { $_[0]->dbh->commit; }
+sub txn_begin {
+ my $self = shift;
+ if ($self->{transaction_depth}++ == 0) {
+ my $dbh = $self->dbh;
+ if ($dbh->{AutoCommit}) {
+ $self->debugfh->print("BEGIN WORK\n")
+ if ($self->debug);
+ $dbh->begin_work;
+ }
+ }
+}
-=item rollback
+=head2 txn_commit
+
+Issues a commit against the current dbh.
+
+=cut
+
+sub txn_commit {
+ my $self = shift;
+ if ($self->{transaction_depth} == 0) {
+ my $dbh = $self->dbh;
+ unless ($dbh->{AutoCommit}) {
+ $self->debugfh->print("COMMIT\n")
+ if ($self->debug);
+ $dbh->commit;
+ }
+ }
+ else {
+ if (--$self->{transaction_depth} == 0) {
+ $self->debugfh->print("COMMIT\n")
+ if ($self->debug);
+ $self->dbh->commit;
+ }
+ }
+}
- $class->rollback;
+=head2 txn_rollback
-Issues a rollback again 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 rollback { $_[0]->dbh->rollback; }
+sub txn_rollback {
+ my $self = shift;
+
+ eval {
+ if ($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
+ }
+}
sub _execute {
my ($self, $op, $extra_bind, $ident, @args) = @_;
my ($sql, @bind) = $self->sql_maker->$op($ident, @args);
unshift(@bind, @$extra_bind) if $extra_bind;
- warn "$sql: @bind" if $self->debug;
- my $sth = $self->sth($sql,$op);
+ if ($self->debug) {
+ my @debug_bind = map { defined $_ ? qq{'$_'} : q{'NULL'} } @bind;
+ $self->debugfh->print("$sql: " . join(', ', @debug_bind) . "\n");
+ }
+ 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 = $sth->execute(@bind);
+ my $rv;
+ if ($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) = @_;
- $self->throw( "Couldn't insert ".join(', ', map "$_ => $to_insert->{$_}", keys %$to_insert)." into ${ident}" )
- unless ($self->_execute('insert' => [], $ident, $to_insert) > 0);
+ $self->throw_exception(
+ "Couldn't insert ".join(', ',
+ map "$_ => $to_insert->{$_}", keys %$to_insert
+ )." into ${ident}"
+ ) unless ($self->_execute('insert' => [], $ident, $to_insert));
return $to_insert;
}
if (ref $condition eq 'SCALAR') {
$order = $1 if $$condition =~ s/ORDER BY (.*)$//i;
}
+ 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} ||
$self->sql_maker->_default_limit_syntax eq "GenericSubQ") {
sub select {
my $self = shift;
my ($ident, $select, $condition, $attrs) = @_;
- my ($rv, $sth, @bind) = $self->_select(@_);
- return $self->cursor->new($sth, \@bind, $attrs);
+ return $self->cursor->new($self, \@_, $attrs);
}
+# Need to call finish() to work round broken DBDs
+
sub select_single {
my $self = shift;
my ($rv, $sth, @bind) = $self->_select(@_);
- return $sth->fetchrow_array;
+ my @row = $sth->fetchrow_array;
+ $sth->finish();
+ return @row;
}
sub sth {
- my ($self, $sql, $op) = @_;
- my $meth = (defined $op && $op ne 'select' ? 'prepare_cached' : 'prepare');
- return $self->dbh->$meth($sql);
+ my ($self, $sql) = @_;
+ # 3 is the if_active parameter which avoids active sth re-use
+ return $self->dbh->prepare_cached($sql, {}, 3);
}
+=head2 columns_info_for
+
+Returns database type info for a given table columns.
+
+=cut
+
+sub columns_info_for {
+ my ($self, $table) = @_;
+
+ my $dbh = $self->dbh;
+
+ if ($dbh->can('column_info')) {
+ my %result;
+ 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;
+ }
+ $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 }
+
1;
-=back
+=head1 ENVIRONMENT VARIABLES
+
+=head2 DBIX_CLASS_STORAGE_DBI_DEBUG
+
+If C<DBIX_CLASS_STORAGE_DBI_DEBUG> is set then SQL trace information
+is produced (as when the L<debug> method is set).
+
+If the value is of the form C<1=/path/name> then the trace output is
+written to the file C</path/name>.
=head1 AUTHORS