package DBIx::Class::Storage::DBI;
+use base 'DBIx::Class::Storage';
+
use strict;
use warnings;
use DBI;
sub select {
my ($self, $table, $fields, $where, $order, @rest) = @_;
@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 _emulate_limit {
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 $from eq 'ARRAY') {
sub _quote {
my ($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.
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 {
__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]);
$new->transaction_depth(0);
if (defined($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')) || $new->throw_exception("Cannot open trace file $1");
} else {
$new->debugfh(IO::File->new('>&STDERR'));
}
return $new;
}
+sub throw_exception {
+ my ($self, $msg) = @_;
+ croak($msg);
+}
+
=head1 NAME
DBIx::Class::Storage::DBI - DBI storage handler
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 != $$) {
+ $self->_dbh->{InactiveDestroy} = 1;
+ $self->_sql_maker(undef);
+ return $self->_dbh(undef)
+ }
+ return ($dbh->FETCH('Active') && $dbh->ping);
+ }
+
+ return 0;
}
sub ensure_connected {
my ($self) = @_;
my @info = @{$self->connect_info || []};
$self->_dbh($self->_connect(@info));
-
+ my $driver = $self->_dbh->{Driver}->{Name};
+ eval "require DBIx::Class::Storage::DBI::${driver}";
+ unless ($@) {
+ bless $self, "DBIx::Class::Storage::DBI::${driver}";
+ }
# if on-connect sql statements are given execute them
foreach my $sql_statement (@{$self->on_connect_do || []}) {
$self->_dbh->do($sql_statement);
}
+
+ $self->_conn_pid($$);
+ $self->_conn_tid(threads->tid) if $INC{'threads.pm'};
}
sub _connect {
my ($self, @info) = @_;
- return DBI->connect(@info);
+
+ my ($old_connect_via, $dbh);
+
+ if ($INC{'Apache/DBI.pm'} && $ENV{MOD_PERL}) {
+ $old_connect_via = $DBI::connect_via;
+ $DBI::connect_via = 'connect';
+ }
+
+ if(ref $info[0] eq 'CODE') {
+ $dbh = &{$info[0]};
+ }
+ else {
+ $dbh = DBI->connect(@info);
+ }
+
+ $DBI::connect_via = $old_connect_via if $old_connect_via;
+
+ $self->throw_exception("DBI Connection failed: $DBI::errstr")
+ unless $dbh;
+
+ $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};
+ $self->dbh->begin_work
+ if $self->{transaction_depth}++ == 0 and $self->dbh->{AutoCommit};
}
=head2 txn_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) {
+ $self->dbh->rollback unless $self->dbh->{AutoCommit};
+ }
+ else {
+ --$self->{transaction_depth} == 0 ?
+ $self->dbh->rollback :
+ die DBIx::Class::Storage::NESTED_ROLLBACK_EXCEPTION->new;
+ }
+ };
+
+ if ($@) {
+ 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
}
}
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);
+ $self->throw_exception("no sth generated via sql: $sql") unless $sth;
@bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
my $rv;
if ($sth) {
- $rv = $sth->execute(@bind);
+ $rv = $sth->execute(@bind) or $self->throw_exception("Error executing '$sql': " . $sth->errstr);
} else {
- croak "'$sql' did not generate a statement.";
+ $self->throw_exception("'$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}" )
+ $self->throw_exception( "Couldn't insert ".join(', ', map "$_ => $to_insert->{$_}", 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}) {
+ 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, $order);
=cut
+# override this in a subclass if your DBD ->can('column_info'),
+# but the call itself is horribly broken.
+sub _column_info_broken { 0 }
+
sub columns_info_for {
my ($self, $table) = @_;
+
my %result;
- if ( $self->dbh->can( 'column_info' ) ){
+ if ( $self->dbh->can( 'column_info' ) && !$self->_column_info_broken){
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};
+ $column_info{is_nullable} = $info->{NULLABLE} ? 1 : 0;
+ $column_info{default_value} = $info->{COLUMN_DEF};
$result{$info->{COLUMN_NAME}} = \%column_info;
}
- }else{
+ } else {
my $sth = $self->dbh->prepare("SELECT * FROM $table WHERE 1=0");
$sth->execute;
- my @columns = @{$sth->{NAME}};
+ my @columns = @{$sth->{NAME_lc}};
for my $i ( 0 .. $#columns ){
- $result{$columns[$i]}{data_type} = $sth->{TYPE}->[$i];
+ my %column_info;
+ my $type_num = $sth->{TYPE}->[$i];
+ my $type_name;
+ if(defined $type_num && $self->dbh->can('type_info')) {
+ my $type_info = $self->dbh->type_info($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;
+ $result{$columns[$i]} = \%column_info;
}
}
return \%result;
}
+sub last_insert_id {
+ my ($self, $row) = @_;
+
+ return $self->dbh->func('last_insert_rowid');
+
+}
+
+sub sqlt_type { shift->dbh->{Driver}->{Name} }
+
+sub deployment_statements {
+ my ($self, $schema, $type, $sqltargs) = @_;
+ $type ||= $self->sqlt_type;
+ 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')->($tr);
+}
+
+sub deploy {
+ my ($self, $schema, $type, $sqltargs) = @_;
+ foreach(split(";\n", $self->deployment_statements($schema, $type, $sqltargs))) {
+ $self->debugfh->print("$_\n") if $self->debug;
+ $self->dbh->do($_) or warn "SQL was:\n $_";
+ }
+}
+
sub DESTROY { shift->disconnect }
1;