1 package DBIx::Class::Storage::DBI::Sybase;
7 DBIx::Class::Storage::DBI::Sybase::Base
8 DBIx::Class::Storage::DBI
10 use Carp::Clan qw/^DBIx::Class/;
14 DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase
18 This subclass supports L<DBD::Sybase> for real Sybase databases. If you are
19 using an MSSQL database via L<DBD::Sybase>, your storage will be reblessed to
20 L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server>.
24 If your version of Sybase does not support placeholders, then your storage
25 will be reblessed to L<DBIx::Class::Storage::DBI::Sybase::NoBindVars>. You can
26 also enable that driver explicitly, see the documentation for more details.
28 With this driver there is unfortunately no way to get the C<last_insert_id>
29 without doing a C<select max(col)>.
31 But your queries will be cached.
33 A recommended L<DBIx::Class::Storage::DBI/connect_info> settings:
35 on_connect_call => [['datetime_setup'], [blob_setup => log_on_update => 0]]
41 __PACKAGE__->mk_group_accessors('simple' =>
42 qw/_blob_log_on_update/
48 if (ref($self) eq 'DBIx::Class::Storage::DBI::Sybase') {
50 @{$self->dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2]
55 my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}";
57 if (!$exception && $dbtype && $self->load_optional_class($subclass)) {
58 bless $self, $subclass;
62 if (not $self->dbh->{syb_dynamic_supported}) {
63 $self->ensure_class_loaded('DBIx::Class::Storage::DBI::Sybase::NoBindVars');
64 bless $self, 'DBIx::Class::Storage::DBI::Sybase::NoBindVars';
71 =head2 connect_call_blob_setup
75 on_connect_call => [ [ blob_setup => log_on_update => 0 ] ]
77 Does C<< $dbh->{syb_binary_images} = 1; >> to return C<IMAGE> data as raw binary
78 instead of as a hex string.
82 Also sets the C<log_on_update> value for blob write operations. The default is
83 C<1>, but C<0> is better if your database is configured for it.
86 L<DBD::Sybase/Handling_IMAGE/TEXT_data_with_syb_ct_get_data()/syb_ct_send_data()>.
90 sub connect_call_blob_setup {
93 my $dbh = $self->_dbh;
94 $dbh->{syb_binary_images} = 1;
96 $self->_blob_log_on_update($args{log_on_update})
97 if exists $args{log_on_update};
102 shift =~ /(?:text|image|lob|bytea|binary)/i;
106 my ($self, $source, $to_insert) = splice @_, 0, 3;
108 my $blob_cols = $self->_remove_blob_cols($source, $to_insert);
110 my $updated_cols = $self->next::method($source, $to_insert, @_);
112 $self->_update_blobs($source, $blob_cols, $to_insert) if %$blob_cols;
114 return $updated_cols;
118 # my ($self, $source) = splice @_, 0, 2;
121 # my $blob_cols = $self->_remove_blob_cols($source, $fields);
127 # @res = $self->next::method($source, @_);
129 # $res[0] = $self->next::method($source, @_);
133 # $self->_update_blobs($source, $blob_cols, $fields) if %$blob_cols;
135 # return wantarray ? @res : $res[0];
138 sub _remove_blob_cols {
139 my ($self, $source, $fields) = @_;
143 for my $col (keys %$fields) {
144 $blob_cols{$col} = delete $fields->{$col}
145 if $self->_is_lob_type($source->column_info($col)->{data_type});
152 my ($self, $source, $blob_cols, $inserted) = @_;
153 my $dbh = $self->dbh;
155 my $table = $source->from;
157 my (@primary_cols) = $source->primary_columns;
159 croak "Cannot update TEXT/IMAGE without a primary key!"
160 unless @primary_cols;
162 my $search_cond = join ',' => map "$_ = ?", @primary_cols;
164 for my $col (keys %$blob_cols) {
165 my $blob = $blob_cols->{$col};
167 # First update to empty string in case it's NULL, can't update a NULL blob using
169 my $sth = $dbh->prepare_cached(
170 qq{update $table set $col = '' where $search_cond}
172 $sth->execute(map $inserted->{$_}, @primary_cols) or die $sth->errstr;
175 $sth = $dbh->prepare_cached(
176 "select $col from $table where $search_cond"
178 $sth->execute(map $inserted->{$_}, @primary_cols);
181 while ($sth->fetch) {
182 $sth->func('CS_GET', 1, 'ct_data_info') or die $sth->errstr;
184 $sth->func('ct_prepare_send') or die $sth->errstr;
186 my $log_on_update = $self->_blob_log_on_update;
187 $log_on_update = 1 if not defined $log_on_update;
189 $sth->func('CS_SET', 1, {
190 total_txtlen => length($blob),
191 log_on_update => $log_on_update
192 }, 'ct_data_info') or die $sth->errstr;
194 $sth->func($blob, length($blob), 'ct_send_data') or die $sth->errstr;
196 $sth->func('ct_finish_send') or die $sth->errstr;
200 croak $exception if $exception;
204 =head2 connect_call_datetime_setup
208 on_connect_call => 'datetime_setup'
210 In L<DBIx::Class::Storage::DBI/connect_info> to set:
212 $dbh->syb_date_fmt('ISO_strict'); # output fmt: 2004-08-21T14:36:48.080Z
213 $dbh->do('set dateformat mdy'); # input fmt: 08/13/1979 18:08:55.080
215 On connection for use with L<DBIx::Class::InflateColumn::DateTime>, using
216 L<DateTime::Format::Sybase>, which you will need to install.
218 This works for both C<DATETIME> and C<SMALLDATETIME> columns, although
219 C<SMALLDATETIME> columns only have minute precision.
224 my $old_dbd_warned = 0;
226 sub connect_call_datetime_setup {
228 my $dbh = $self->_dbh;
230 if ($dbh->can('syb_date_fmt')) {
231 $dbh->syb_date_fmt('ISO_strict');
232 } elsif (not $old_dbd_warned) {
233 carp "Your DBD::Sybase is too old to support ".
234 "DBIx::Class::InflateColumn::DateTime, please upgrade!";
238 $dbh->do('set dateformat mdy');
244 sub datetime_parser_type { "DateTime::Format::Sybase" }
246 sub _dbh_last_insert_id {
247 my ($self, $dbh, $source, $col) = @_;
249 # sorry, there's no other way!
250 my $sth = $dbh->prepare_cached("select max($col) from ".$source->from);
251 return ($dbh->selectrow_array($sth))[0];
258 See L</connect_call_datetime_setup> to setup date formats
259 for L<DBIx::Class::InflateColumn::DateTime>.
261 =head1 IMAGE AND TEXT COLUMNS
263 See L</connect_call_blob_setup> for a L<DBIx::Class::Storage::DBI/connect_info>
264 setting you need to work with C<IMAGE> columns.
266 Due to limitations in L<DBD::Sybase> and this driver, it is only possible to
267 select one C<TEXT> or C<IMAGE> column at a time.
271 See L<DBIx::Class/CONTRIBUTORS>.
275 You may distribute this code under the same terms as Perl itself.