use base qw/
DBIx::Class::Storage::DBI::Sybase::Base
- DBIx::Class::Storage::DBI
+ DBIx::Class::Storage::DBI::NoBindVars
/;
use mro 'c3';
-use Carp::Clan qw/^DBIx::Class/;
-
-=head1 NAME
-
-DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase
-
-=head1 SYNOPSIS
-
-This subclass supports L<DBD::Sybase> for real Sybase databases. If you are
-using an MSSQL database via L<DBD::Sybase>, your storage will be reblessed to
-L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server>.
-
-=head1 DESCRIPTION
-
-If your version of Sybase does not support placeholders, then your storage
-will be reblessed to L<DBIx::Class::Storage::DBI::Sybase::NoBindVars>. You can
-also enable that driver explicitly, see the documentation for more details.
-
-With this driver there is unfortunately no way to get the C<last_insert_id>
-without doing a C<select max(col)>.
-
-But your queries will be cached.
-
-You need a version of L<DBD::Sybase> compiled with the Sybase OpenClient
-libraries, B<NOT> FreeTDS, for placeholder support. Otherwise your storage will
-be automatically reblessed into C<::NoBindVars>.
-
-A recommended L<DBIx::Class::Storage::DBI/connect_info> settings:
-
- on_connect_call => [['datetime_setup'], [blob_setup => log_on_update => 0]]
-
-=head1 METHODS
-
-=cut
-
-__PACKAGE__->mk_group_accessors('simple' =>
- qw/_blob_log_on_update/
-);
sub _rebless {
- my $self = shift;
-
- if (ref($self) eq 'DBIx::Class::Storage::DBI::Sybase') {
- my $dbtype = eval {
- @{$self->dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2]
- } || '';
-
- my $exception = $@;
- $dbtype =~ s/\W/_/gi;
- my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}";
-
- if (!$exception && $dbtype && $self->load_optional_class($subclass)) {
- bless $self, $subclass;
- $self->_rebless;
- } else { # real Sybase
- my $no_bind_vars = 'DBIx::Class::Storage::DBI::Sybase::NoBindVars';
-
- if (not $self->dbh->{syb_dynamic_supported}) {
- $self->ensure_class_loaded($no_bind_vars);
- bless $self, $no_bind_vars;
- $self->_rebless;
- }
-
- if ($self->_using_freetds) {
- carp <<'EOF';
-
-Your version of Sybase potentially supports placeholders and query caching,
-however you seem to be using FreeTDS which does not (yet?) support this.
-
-Please recompile DBD::Sybase with the Sybase OpenClient libraries if you want
-these features.
-
-TEXT/IMAGE column support will also not work under FreeTDS.
-
-See perldoc DBIx::Class::Storage::DBI::Sybase for more details.
-EOF
- $self->ensure_class_loaded($no_bind_vars);
- bless $self, $no_bind_vars;
- $self->_rebless;
- }
- $self->_set_maxConnect;
- }
- }
-}
-
-{
- my $using_freetds = undef;
-
- sub _using_freetds {
my $self = shift;
- my $dbh = $self->_dbh;
-
- return $using_freetds if defined $using_freetds;
-
-# local $dbh->{syb_rowcount} = 1; # this is broken in freetds
-# $using_freetds = @{ $dbh->selectall_arrayref('sp_help') } != 1;
-
- $using_freetds = $dbh->{syb_oc_version} =~ /freetds/i;
-
- return $using_freetds;
- }
-}
-
-sub _set_maxConnect {
- my $self = shift;
-
- my $dsn = $self->_dbi_connect_info->[0];
-
- return if ref($dsn) eq 'CODE';
-
- if ($dsn !~ /maxConnect=/) {
- $self->_dbi_connect_info->[0] = "$dsn;maxConnect=256";
- my $connected = defined $self->_dbh;
- $self->disconnect;
- $self->ensure_connected if $connected;
- }
-}
-
-=head2 connect_call_blob_setup
-
-Used as:
-
- on_connect_call => [ [ blob_setup => log_on_update => 0 ] ]
-
-Does C<< $dbh->{syb_binary_images} = 1; >> to return C<IMAGE> data as raw binary
-instead of as a hex string.
-
-Recommended.
-
-Also sets the C<log_on_update> value for blob write operations. The default is
-C<1>, but C<0> is better if your database is configured for it.
-
-See
-L<DBD::Sybase/Handling_IMAGE/TEXT_data_with_syb_ct_get_data()/syb_ct_send_data()>.
-
-=cut
-
-sub connect_call_blob_setup {
- my $self = shift;
- my %args = @_;
- my $dbh = $self->_dbh;
- $dbh->{syb_binary_images} = 1;
-
- $self->_blob_log_on_update($args{log_on_update})
- if exists $args{log_on_update};
-}
-
-sub _is_lob_type {
- my $self = shift;
- my $type = shift;
- $type && $type =~ /(?:text|image|lob|bytea|binary|memo)/i;
-}
-
-## This will be useful if we ever implement BLOB filehandle inflation and will
-## need to use the API, but for now it isn't.
-#
-#sub order_columns_for_select {
-# my ($self, $source) = @_;
-#
-# my (@non_blobs, @blobs);
-#
-# for my $col ($source->columns) {
-# if ($self->_is_lob_type($source->column_info($col)->{data_type})) {
-# push @blobs, $col;
-# } else {
-# push @non_blobs, $col;
-# }
-# }
-#
-# croak "cannot select more than a one TEXT/IMAGE column at a time"
-# if @blobs > 1;
-#
-# return (@non_blobs, @blobs);
-#}
-
-# override to handle TEXT/IMAGE
-sub insert {
- my ($self, $source, $to_insert) = splice @_, 0, 3;
-
- my $blob_cols = $self->_remove_blob_cols($source, $to_insert);
-
- my $updated_cols = $self->next::method($source, $to_insert, @_);
-
- $self->_insert_blobs($source, $blob_cols, $to_insert) if %$blob_cols;
-
- return $updated_cols;
-}
-
-sub update {
- my ($self, $source) = splice @_, 0, 2;
- my ($fields, $where) = @_;
- my $wantarray = wantarray;
-
- my $blob_cols = $self->_remove_blob_cols($source, $fields);
-
- my @res;
- if ($wantarray) {
- @res = $self->next::method($source, @_);
- } else {
- $res[0] = $self->next::method($source, @_);
- }
-
- $self->_update_blobs($source, $blob_cols, $where) if %$blob_cols;
-
- return $wantarray ? @res : $res[0];
-}
-
-sub _remove_blob_cols {
- my ($self, $source, $fields) = @_;
-
- my %blob_cols;
-
- for my $col (keys %$fields) {
- if ($self->_is_lob_type($source->column_info($col)->{data_type})) {
- $blob_cols{$col} = delete $fields->{$col};
- $fields->{$col} = \"''";
- }
- }
-
- return \%blob_cols;
-}
-
-sub _update_blobs {
- my ($self, $source, $blob_cols, $where) = @_;
-
- my (@primary_cols) = $source->primary_columns;
-
- croak "Cannot update TEXT/IMAGE column(s) without a primary key"
- unless @primary_cols;
-
-# check if we're updating a single row by PK
- my $pk_cols_in_where = 0;
- for my $col (@primary_cols) {
- $pk_cols_in_where++ if defined $where->{$col};
- }
- my @rows;
-
- if ($pk_cols_in_where == @primary_cols) {
- my %row_to_update;
- @row_to_update{@primary_cols} = @{$where}{@primary_cols};
- @rows = \%row_to_update;
- } else {
- my $rs = $source->resultset->search(
- $where,
- {
- result_class => 'DBIx::Class::ResultClass::HashRefInflator',
- select => \@primary_cols
- }
- );
- @rows = $rs->all; # statement must finish
- }
-
- for my $row (@rows) {
- $self->_insert_blobs($source, $blob_cols, $row);
- }
-}
-
-sub _insert_blobs {
- my ($self, $source, $blob_cols, $row) = @_;
- my $dbh = $self->dbh;
-
- my $table = $source->from;
-
- my %row = %$row;
- my (@primary_cols) = $source->primary_columns;
-
- croak "Cannot update TEXT/IMAGE column(s) without a primary key"
- unless @primary_cols;
-
- if ((grep { defined $row{$_} } @primary_cols) != @primary_cols) {
- if (@primary_cols == 1) {
- my $col = $primary_cols[0];
- $row{$col} = $self->last_insert_id($source, $col);
- } else {
- croak "Cannot update TEXT/IMAGE column(s) without primary key values";
- }
- }
-
- for my $col (keys %$blob_cols) {
- my $blob = $blob_cols->{$col};
- my $sth;
-
- if (not $self->isa('DBIx::Class::Storage::DBI::NoBindVars')) {
- my $search_cond = join ',' => map "$_ = ?", @primary_cols;
-
- $sth = $self->sth(
- "select $col from $table where $search_cond"
- );
- $sth->execute(map $row{$_}, @primary_cols);
- } else {
- my $search_cond = join ',' => map "$_ = $row{$_}", @primary_cols;
-
- $sth = $dbh->prepare(
- "select $col from $table where $search_cond"
- );
- $sth->execute;
- }
- eval {
- while ($sth->fetch) {
- $sth->func('CS_GET', 1, 'ct_data_info') or die $sth->errstr;
- }
- $sth->func('ct_prepare_send') or die $sth->errstr;
-
- my $log_on_update = $self->_blob_log_on_update;
- $log_on_update = 1 if not defined $log_on_update;
-
- $sth->func('CS_SET', 1, {
- total_txtlen => length($blob),
- log_on_update => $log_on_update
- }, 'ct_data_info') or die $sth->errstr;
-
- $sth->func($blob, length($blob), 'ct_send_data') or die $sth->errstr;
-
- $sth->func('ct_finish_send') or die $sth->errstr;
+ my $dbtype = eval {
+ @{$self->_get_dbh
+ ->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})
+ }[2]
};
- my $exception = $@;
- $sth->finish;
- croak $exception if $exception;
- }
-}
-
-=head2 connect_call_datetime_setup
-
-Used as:
-
- on_connect_call => 'datetime_setup'
-
-In L<DBIx::Class::Storage::DBI/connect_info> to set:
-
- $dbh->syb_date_fmt('ISO_strict'); # output fmt: 2004-08-21T14:36:48.080Z
- $dbh->do('set dateformat mdy'); # input fmt: 08/13/1979 18:08:55.080
-
-On connection for use with L<DBIx::Class::InflateColumn::DateTime>, using
-L<DateTime::Format::Sybase>, which you will need to install.
-
-This works for both C<DATETIME> and C<SMALLDATETIME> columns, although
-C<SMALLDATETIME> columns only have minute precision.
-
-=cut
-
-{
- my $old_dbd_warned = 0;
-
- sub connect_call_datetime_setup {
- my $self = shift;
- my $dbh = $self->_dbh;
-
- if ($dbh->can('syb_date_fmt')) {
- $dbh->syb_date_fmt('ISO_strict');
- } elsif (not $old_dbd_warned) {
- carp "Your DBD::Sybase is too old to support ".
- "DBIx::Class::InflateColumn::DateTime, please upgrade!";
- $old_dbd_warned = 1;
+ unless ( $@ ) {
+ $dbtype =~ s/\W/_/gi;
+ my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}";
+ if ($self->load_optional_class($subclass) && !$self->isa($subclass)) {
+ bless $self, $subclass;
+ $self->_rebless;
+ }
}
-
- $dbh->do('set dateformat mdy');
-
- 1;
- }
}
-sub datetime_parser_type { "DateTime::Format::Sybase" }
-
sub _dbh_last_insert_id {
- my ($self, $dbh, $source, $col) = @_;
-
- # sorry, there's no other way!
- my $sth = $self->sth("select max($col) from ".$source->from);
- my ($id) = $dbh->selectrow_array($sth);
- $sth->finish;
-
- return $id;
+ my ($self, $dbh, $source, $col) = @_;
+ return ($dbh->selectrow_array('select @@identity'))[0];
}
1;
-=head1 MAXIMUM CONNECTIONS
-
-L<DBD::Sybase> makes separate connections to the server for active statements in
-the background. By default the number of such connections is limited to 25, on
-both the client side and the server side.
-
-This is a bit too low, so on connection the clientside setting is set to C<256>
-(see L<DBD::Sybase/maxConnect>.) You can override it to whatever setting you
-like in the DSN.
+=head1 NAME
-See
-L<http://infocenter.sybase.com/help/index.jsp?topic=/com.sybase.help.ase_15.0.sag1/html/sag1/sag1272.htm>
-for information on changing the setting on the server side.
+DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase
-=head1 DATES
+=head1 SYNOPSIS
-See L</connect_call_datetime_setup> to setup date formats
-for L<DBIx::Class::InflateColumn::DateTime>.
+This subclass supports L<DBD::Sybase> for real Sybase databases. If
+you are using an MSSQL database via L<DBD::Sybase>, see
+L<DBIx::Class::Storage::DBI::Sybase::MSSQL>.
-=head1 IMAGE AND TEXT COLUMNS
+=head1 CAVEATS
-L<DBD::Sybase> compiled with FreeTDS will B<NOT> work with C<TEXT/IMAGE>
-columns.
+This storage driver uses L<DBIx::Class::Storage::DBI::NoBindVars> as a base.
+This means that bind variables will be interpolated (properly quoted of course)
+into the SQL query itself, without using bind placeholders.
-See L</connect_call_blob_setup> for a L<DBIx::Class::Storage::DBI/connect_info>
-setting you need to work with C<IMAGE> columns.
+More importantly this means that caching of prepared statements is explicitly
+disabled, as the interpolation renders it useless.
=head1 AUTHORS
-See L<DBIx::Class/CONTRIBUTORS>.
+Brandon L Black <blblack@gmail.com>
+
+Justin Hunter <justin.d.hunter@gmail.com>
=head1 LICENSE
You may distribute this code under the same terms as Perl itself.
=cut
-# vim:sts=2 sw=2:
projects / dbsrgits/DBIx-Class.git / blobdiff