use Scalar::Util();
use List::Util();
+# what version of sqlt do we require if deploy() without a ddl_dir is invoked
+# when changing also adjust the corresponding author_require in Makefile.PL
+my $minimum_sqlt_version = '0.11002';
+
+
__PACKAGE__->mk_group_accessors('simple' =>
qw/_connect_info _dbi_connect_info _dbh _sql_maker _sql_maker_opts _conn_pid
_conn_tid transaction_depth _dbh_autocommit _driver_determined savepoints/
$self->_do_connection_actions(disconnect_call_ => $_) for @actions;
- $self->_dbh->rollback unless $self->_dbh_autocommit;
+ $self->_dbh_rollback unless $self->_dbh_autocommit;
+
$self->_dbh->disconnect;
$self->_dbh(undef);
$self->{_dbh_gen}++;
return $self->_sql_maker;
}
+# nothing to do by default
sub _rebless {}
+sub _init {}
sub _populate_dbh {
my ($self) = @_;
$self->_driver_determined(1);
+ $self->_init; # run driver-specific initializations
+
$self->_run_connection_actions
if $started_unconnected && defined $self->_dbh;
}
$weak_self->throw_exception("DBI Exception: $_[0]");
}
else {
+ # the handler may be invoked by something totally out of
+ # the scope of DBIC
croak ("DBI Exception: $_[0]");
}
};
if($self->{transaction_depth} == 0) {
$self->debugobj->txn_begin()
if $self->debug;
-
- # being here implies we have AutoCommit => 1
- # if the user is utilizing txn_do - good for
- # him, otherwise we need to ensure that the
- # $dbh is healthy on BEGIN
- my $dbh_method = $self->{_in_dbh_do} ? '_dbh' : 'dbh';
- $self->$dbh_method->begin_work;
-
- } elsif ($self->auto_savepoint) {
+ $self->_dbh_begin_work;
+ }
+ elsif ($self->auto_savepoint) {
$self->svp_begin;
}
$self->{transaction_depth}++;
}
+sub _dbh_begin_work {
+ my $self = shift;
+
+ # if the user is utilizing txn_do - good for him, otherwise we need to
+ # ensure that the $dbh is healthy on BEGIN.
+ # We do this via ->dbh_do instead of ->dbh, so that the ->dbh "ping"
+ # will be replaced by a failure of begin_work itself (which will be
+ # then retried on reconnect)
+ if ($self->{_in_dbh_do}) {
+ $self->_dbh->begin_work;
+ } else {
+ $self->dbh_do(sub { $_[1]->begin_work });
+ }
+}
+
sub txn_commit {
my $self = shift;
if ($self->{transaction_depth} == 1) {
my $dbh = $self->_dbh;
$self->debugobj->txn_commit()
if ($self->debug);
- $dbh->commit;
+ $self->_dbh_commit;
$self->{transaction_depth} = 0
if $self->_dbh_autocommit;
}
}
}
+sub _dbh_commit {
+ my $self = shift;
+ $self->_dbh->commit;
+}
+
sub txn_rollback {
my $self = shift;
my $dbh = $self->_dbh;
if ($self->debug);
$self->{transaction_depth} = 0
if $self->_dbh_autocommit;
- $dbh->rollback;
+ $self->_dbh_rollback;
}
elsif($self->{transaction_depth} > 1) {
$self->{transaction_depth}--;
}
}
+sub _dbh_rollback {
+ my $self = shift;
+ $self->_dbh->rollback;
+}
+
# This used to be the top-half of _execute. It was split out to make it
# easier to override in NoBindVars without duping the rest. It takes up
# all of _execute's args, and emits $sql, @bind.
## scalar refs, or at least, all the same type as the first set, the statement is
## only prepped once.
sub insert_bulk {
- my ($self, $source, $cols, $data) = @_;
+ my ($self, $source, $cols, $data, $sth_attr) = @_;
# redispatch to insert_bulk method of storage we reblessed into, if necessary
if (not $self->_driver_determined) {
}
my %colvalues;
- my $table = $source->from;
@colvalues{@$cols} = (0..$#$cols);
- my ($sql, @bind) = $self->sql_maker->insert($table, \%colvalues);
+
+ # pass scalarref to SQLA for literal sql if it's the same in all slices
+ for my $i (0..$#$cols) {
+ my $first_val = $data->[0][$i];
+ next unless (Scalar::Util::reftype($first_val)||'') eq 'SCALAR';
+
+ $colvalues{ $cols->[$i] } = $first_val
+ if (grep {
+ (Scalar::Util::reftype($_)||'') eq 'SCALAR' &&
+ $$_ eq $$first_val
+ } map $data->[$_][$i], (1..$#$data)) == (@$data - 1);
+ }
+
+ my ($sql, $bind) = $self->_prep_for_execute (
+ 'insert', undef, $source, [\%colvalues]
+ );
+ my @bind = @$bind;
+
+ my $empty_bind = 1 if (not @bind) &&
+ (grep { (Scalar::Util::reftype($_)||'') eq 'SCALAR' } values %colvalues)
+ == @$cols;
+
+ if ((not @bind) && (not $empty_bind)) {
+ $self->throw_exception(
+ 'Cannot insert_bulk without support for placeholders'
+ );
+ }
$self->_query_start( $sql, @bind );
- my $sth = $self->sth($sql);
+ my $sth = $self->sth($sql, 'insert', $sth_attr);
+
+ my $rv = do {
+ if ($empty_bind) {
+ # bind_param_array doesn't work if there are no binds
+ $self->_execute_array_empty( $sth, scalar @$data );
+ }
+ else {
+# @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
+ $self->_execute_array( $source, $sth, \@bind, $cols, $data );
+ }
+ };
+
+ $self->_query_end( $sql, @bind );
+
+ return (wantarray ? ($rv, $sth, @bind) : $rv);
+}
-# @bind = map { ref $_ ? ''.$_ : $_ } @bind; # stringify args
+sub _execute_array {
+ my ($self, $source, $sth, $bind, $cols, $data, $guard) = @_;
## This must be an arrayref, else nothing works!
my $tuple_status = [];
## Bind the values and execute
my $placeholder_index = 1;
- foreach my $bound (@bind) {
+ foreach my $bound (@$bind) {
my $attributes = {};
my ($column_name, $data_index) = @$bound;
$sth->bind_param_array( $placeholder_index, [@data], $attributes );
$placeholder_index++;
}
+
my $rv = eval { $sth->execute_array({ArrayTupleStatus => $tuple_status}) };
- if (my $err = $@) {
+
+# only needed for Sybase, it requires a commit before the $sth->finish
+ $guard->commit if $guard;
+
+ $sth->finish;
+
+ if (my $err = $@ || $sth->errstr) {
my $i = 0;
++$i while $i <= $#$tuple_status && !ref $tuple_status->[$i];
- $self->throw_exception($sth->errstr || "Unexpected populate error: $err")
+ $self->throw_exception("Unexpected populate error: $err")
if ($i > $#$tuple_status);
- require Data::Dumper;
- local $Data::Dumper::Terse = 1;
- local $Data::Dumper::Indent = 1;
- local $Data::Dumper::Useqq = 1;
- local $Data::Dumper::Quotekeys = 0;
-
$self->throw_exception(sprintf "%s for populate slice:\n%s",
- $tuple_status->[$i][1],
- Data::Dumper::Dumper(
- { map { $cols->[$_] => $data->[$i][$_] } (0 .. $#$cols) }
- ),
+ ($tuple_status->[$i][1] || $err),
+ $self->_pretty_print ({
+ map { $cols->[$_] => $data->[$i][$_] } (0 .. $#$cols)
+ }),
);
}
- $self->throw_exception($sth->errstr) if !$rv;
- $self->_query_end( $sql, @bind );
- return (wantarray ? ($rv, $sth, @bind) : $rv);
+ return $rv;
+}
+
+sub _execute_array_empty {
+ my ($self, $sth, $count) = @_;
+ eval {
+ my $dbh = $self->_get_dbh;
+ local $dbh->{RaiseError} = 1;
+ local $dbh->{PrintError} = 0;
+ foreach (1..$count) {
+ $sth->execute;
+# In case of a multi-statement with a select, some DBDs (namely Sybase) require
+# the cursor to be exhausted.
+ $sth->fetchall_arrayref;
+ }
+ };
+ my $exception = $@;
+ $sth->finish;
+ $self->throw_exception($exception) if $exception;
+
+ return $count;
}
sub update {
- my $self = shift @_;
- my $source = shift @_;
- $self->_determine_driver;
+ my ($self, $source, @args) = @_;
+
+# redispatch to update method of storage we reblessed into, if necessary
+ if (not $self->_driver_determined) {
+ $self->_determine_driver;
+ goto $self->can('update');
+ }
+
my $bind_attributes = $self->source_bind_attributes($source);
- return $self->_execute('update' => [], $source, $bind_attributes, @_);
+ return $self->_execute('update' => [], $source, $bind_attributes, @args);
}
return @pcols ? \@pcols : [ 1 ];
}
+=head2 order_select_columns
+
+=over 4
+
+=item Arguments: $source, \@columns
+
+=back
+
+Returns an ordered list of column names to be used in a SELECT statement. By
+default simply returns the list that was passed in.
+
+This may be overridden in a specific storage when there are requirements such as
+moving BLOB columns to the end of the SELECT list.
+
+=cut
+
+sub order_select_columns {
+ #my ($self, $source, $columns) = @_;
+ return @{$_[2]};
+}
sub source_bind_attributes {
my ($self, $source) = @_;
=cut
sub _dbh_sth {
- my ($self, $dbh, $sql) = @_;
+ my ($self, $dbh, $sql, $op, $sth_attr) = @_;
+# $op is ignored right now
+
+ $sth_attr ||= {};
# 3 is the if_active parameter which avoids active sth re-use
my $sth = $self->disable_sth_caching
- ? $dbh->prepare($sql)
- : $dbh->prepare_cached($sql, {}, 3);
+ ? $dbh->prepare($sql, $sth_attr)
+ : $dbh->prepare_cached($sql, $sth_attr, 3);
# XXX You would think RaiseError would make this impossible,
# but apparently that's not true :(
}
sub sth {
- my ($self, $sql) = @_;
- $self->dbh_do('_dbh_sth', $sql); # retry over disconnects
+ my ($self, $sql, $op, $sth_attr) = @_;
+ $self->dbh_do('_dbh_sth', $sql, $op, $sth_attr); # retry over disconnects
}
sub _dbh_columns_info_for {
return undef
}
+# Check if placeholders are supported at all
+sub _placeholders_supported {
+ my $self = shift;
+ my $dbh = $self->_get_dbh;
+
+ # some drivers provide a $dbh attribute (e.g. Sybase and $dbh->{syb_dynamic_supported})
+ # but it is inaccurate more often than not
+ eval {
+ local $dbh->{PrintError} = 0;
+ local $dbh->{RaiseError} = 1;
+ $dbh->do('select ?', {}, 1);
+ };
+ return $@ ? 0 : 1;
+}
+
+# Check if placeholders bound to non-string types throw exceptions
+#
+sub _typeless_placeholders_supported {
+ my $self = shift;
+ my $dbh = $self->_get_dbh;
+
+ eval {
+ local $dbh->{PrintError} = 0;
+ local $dbh->{RaiseError} = 1;
+ # this specifically tests a bind that is NOT a string
+ $dbh->do('select 1 where 1 = ?', {}, 1);
+ };
+ return $@ ? 0 : 1;
+}
+
=head2 sqlt_type
Returns the database driver name.
return;
}
+# SQLT version handling
+{
+ my $_sqlt_version_ok; # private
+ my $_sqlt_version_error; # private
+
+ sub _sqlt_version_ok {
+ if (!defined $_sqlt_version_ok) {
+ eval "use SQL::Translator $minimum_sqlt_version";
+ if ($@) {
+ $_sqlt_version_ok = 0;
+ $_sqlt_version_error = $@;
+ }
+ else {
+ $_sqlt_version_ok = 1;
+ }
+ }
+ return $_sqlt_version_ok;
+ }
+
+ sub _sqlt_version_error {
+ shift->_sqlt_version_ok unless defined $_sqlt_version_ok;
+ return $_sqlt_version_error;
+ }
+
+ sub _sqlt_minimum_version { $minimum_sqlt_version };
+}
+
sub DESTROY {
my $self = shift;
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