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) = @_;
+ $table = $self->_quote($table) unless ref($table);
@rest = (-1) unless defined $rest[0];
- $self->SUPER::select($table, $self->_recurse_fields($fields),
- $where, $order, @rest);
+ die "LIMIT 0 Does Not Compute" if $rest[0] == 0;
+ # and anyway, SQL::Abstract::Limit will cause a barf if we don't first
+ 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 {
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(@_);
}
} 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
}
}
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 {
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);
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);
}
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 _connection_pid 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'))
+ or $new->throw_exception("Cannot open trace file $1");
} else {
$new->debugfh(IO::File->new('>&STDERR'));
}
return $new;
}
-=head1 NAME
+sub throw_exception {
+ my ($self, $msg) = @_;
+ croak($msg);
+}
+
+=head1 NAME
DBIx::Class::Storage::DBI - DBI storage handler
Executes the sql statements given as a listref on every db connect.
+=head2 quote_char
+
+Specifies what characters to use to quote table and column names. If
+you use this you will want to specify L<name_sep> as well.
+
+quote_char expectes either a single character, in which case is it is placed
+on either side of the table/column, or an array of length 2 in which case the
+table/column name is placed between the elements.
+
+For example under MySQL you'd use C<quote_char('`')>, and user SQL Server you'd
+use C<quote_char(qw/[ ]/)>.
+
+=head2 name_sep
+
+This only needs to be used in conjunction with L<quote_char>, and is used to
+specify the charecter that seperates elements (schemas, tables, columns) from
+each other. In most cases this is simply a C<.>.
+
=head2 debug
Causes SQL trace information to be emitted on C<debugfh> filehandle
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') && $dbh->ping);
+ }
+
+ return 0;
}
sub ensure_connected {
}
}
+=head2 dbh
+
+Returns the dbh - a data base handle of class L<DBI>.
+
+=cut
+
sub dbh {
my ($self) = @_;
- $self->_dbh(undef)
- if $self->_connection_pid && $self->_connection_pid != $$;
$self->ensure_connected;
return $self->_dbh;
}
$self->_dbh->do($sql_statement);
}
- $self->_connection_pid($$);
+ $self->_conn_pid($$);
+ $self->_conn_tid(threads->tid) if $INC{'threads.pm'};
}
sub _connect {
my ($self, @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}) {
- my $old_connect_via = $DBI::connect_via;
+ $old_connect_via = $DBI::connect_via;
$DBI::connect_via = 'connect';
- my $dbh = DBI->connect(@info);
- $DBI::connect_via = $old_connect_via;
- return $dbh;
}
- my $dbh = DBI->connect(@info);
- croak "DBI Connection failed: $DBI::errstr"
- unless $dbh;
+ 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;
}
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
sub txn_commit {
my $self = shift;
+ my $dbh = $self->dbh;
if ($self->{transaction_depth} == 0) {
- $self->dbh->commit unless $self->dbh->{AutoCommit};
+ 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);
+ $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 {
+ my $dbh = $self->dbh;
+ if ($self->{transaction_depth} == 0) {
+ 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);
+ $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
}
}
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 $bind_str = join(', ', map {
+ defined $_ ? qq{`$_'} : q{`NULL'}
+ } @bind);
+ $self->debugfh->print("$sql ($bind_str)\n");
+ }
+ my $sth = eval { $self->sth($sql,$op) };
+
+ if (!$sth || $@) {
+ $self->throw_exception(
+ 'no sth generated via sql (' . ($@ || $self->_dbh->errstr) . "): $sql"
+ );
}
- my $sth = $self->sth($sql,$op);
- croak "no sth generated via sql: $sql" unless $sth;
@bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
- my $rv;
- if ($sth) {
- $rv = $sth->execute(@bind);
- } else {
- croak "'$sql' did not generate a statement.";
+ my $rv = eval { $sth->execute(@bind) };
+ if ($@ || !$rv) {
+ my $bind_str = join(', ', map {
+ defined $_ ? qq{`$_'} : q{`NULL'}
+ } @bind);
+ $self->throw_exception(
+ "Error executing '$sql' ($bind_str): ".($@ || $sth->errstr)
+ );
}
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;
}
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} ||
$self->sql_maker->_default_limit_syntax eq "GenericSubQ") {
$attrs->{software_limit} = 1;
} else {
+ $self->throw_exception("rows attribute must be positive if present")
+ if (defined($attrs->{rows}) && !($attrs->{rows} > 0));
push @args, $attrs->{rows}, $attrs->{offset};
}
return $self->_execute(@args);
=cut
sub columns_info_for {
- my ($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;
+ }
+ $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;
}
- return \%result;
+
+ $result{$columns[$i]} = \%column_info;
+ }
+
+ return \%result;
}
sub last_insert_id {
}
+sub sqlt_type { shift->dbh->{Driver}->{Name} }
+sub deployment_statements {
+ my ($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 my $statement ( $self->deployment_statements($schema, $type, $sqltargs) ) {
+ for ( split(";\n", $statement)) {
+ $self->debugfh->print("$_\n") if $self->debug;
+ $self->dbh->do($_) or warn "SQL was:\n $_";
+ }
+ }
+}
sub DESTROY { shift->disconnect }
If the value is of the form C<1=/path/name> then the trace output is
written to the file C</path/name>.
+This environment variable is checked when the storage object is first
+created (when you call connect on your schema). So, run-time changes
+to this environment variable will not take effect unless you also
+re-connect on your schema.
+
=head1 AUTHORS
Matt S. Trout <mst@shadowcatsystems.co.uk>
projects / dbsrgits/DBIx-Class.git / blobdiff