1 package DBIx::Class::Storage::DBI::Sybase;
7 DBIx::Class::Storage::DBI
8 DBIx::Class::Storage::DBI::Sybase::Base
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 bless $self, 'DBIx::Class::Storage:DBI::Sybase::NoBindVars';
70 =head2 connect_call_blob_setup
74 on_connect_call => [ [ blob_setup => log_on_update => 0 ] ]
76 Does C<< $dbh->{syb_binary_images} = 1; >> to return C<IMAGE> data as raw binary
77 instead of as a hex string.
81 Also sets the C<log_on_update> value for blob write operations. The default is
82 C<1>, but C<0> is better if your database is configured for it.
85 L<DBD::Sybase/Handling_IMAGE/TEXT_data_with_syb_ct_get_data()/syb_ct_send_data()>.
89 sub connect_call_blob_setup {
92 my $dbh = $self->_dbh;
93 $dbh->{syb_binary_images} = 1;
95 $self->_blob_log_on_update($args{log_on_update})
96 if exists $args{log_on_update};
101 shift =~ /(?:text|image|lob|bytea|binary)/i;
105 my ($self, $source, $to_insert) = splice @_, 0, 3;
107 my $blob_cols = $self->_remove_blob_cols($source, $to_insert);
109 my $updated_cols = $self->next::method($source, $to_insert, @_);
111 $self->_update_blobs($source, $blob_cols, $to_insert) if %$blob_cols;
113 return $updated_cols;
117 # my ($self, $source) = splice @_, 0, 2;
120 # my $blob_cols = $self->_remove_blob_cols($source, $fields);
126 # @res = $self->next::method($source, @_);
128 # $res[0] = $self->next::method($source, @_);
132 # $self->_update_blobs($source, $blob_cols, $fields) if %$blob_cols;
134 # return wantarray ? @res : $res[0];
137 sub _remove_blob_cols {
138 my ($self, $source, $fields) = @_;
142 for my $col (keys %$fields) {
143 $blob_cols{$col} = delete $fields->{$col}
144 if $self->_is_lob_type($source->column_info($col)->{data_type});
151 my ($self, $source, $blob_cols, $inserted) = @_;
152 my $dbh = $self->dbh;
154 my $table = $source->from;
156 my (@primary_cols) = $source->primary_columns;
158 croak "Cannot update TEXT/IMAGE without a primary key!"
159 unless @primary_cols;
161 my $search_cond = join ',' => map "$_ = ?", @primary_cols;
163 for my $col (keys %$blob_cols) {
164 my $blob = $blob_cols->{$col};
166 # First update to empty string in case it's NULL, can't update a NULL blob using
168 my $sth = $dbh->prepare_cached(
169 qq{update $table set $col = '' where $search_cond}
171 $sth->execute(map $inserted->{$_}, @primary_cols) or die $sth->errstr;
174 $sth = $dbh->prepare_cached(
175 "select $col from $table where $search_cond"
177 $sth->execute(map $inserted->{$_}, @primary_cols);
180 while ($sth->fetch) {
181 $sth->func('CS_GET', 1, 'ct_data_info') or die $sth->errstr;
183 $sth->func('ct_prepare_send') or die $sth->errstr;
185 my $log_on_update = $self->_blob_log_on_update;
186 $log_on_update = 1 if not defined $log_on_update;
188 $sth->func('CS_SET', 1, {
189 total_txtlen => length($blob),
190 log_on_update => $log_on_update
191 }, 'ct_data_info') or die $sth->errstr;
193 $sth->func($blob, length($blob), 'ct_send_data') or die $sth->errstr;
195 $sth->func('ct_finish_send') or die $sth->errstr;
199 croak $exception if $exception;
203 =head2 connect_call_datetime_setup
207 on_connect_call => 'datetime_setup'
209 In L<DBIx::Class::Storage::DBI/connect_info> to set:
211 $dbh->syb_date_fmt('ISO_strict'); # output fmt: 2004-08-21T14:36:48.080Z
212 $dbh->do('set dateformat mdy'); # input fmt: 08/13/1979 18:08:55.080
214 On connection for use with L<DBIx::Class::InflateColumn::DateTime>, using
215 L<DateTime::Format::Sybase>, which you will need to install.
217 This works for both C<DATETIME> and C<SMALLDATETIME> columns, although
218 C<SMALLDATETIME> columns only have minute precision.
223 my $old_dbd_warned = 0;
225 sub connect_call_datetime_setup {
227 my $dbh = $self->_dbh;
229 if ($dbh->can('syb_date_fmt')) {
230 $dbh->syb_date_fmt('ISO_strict');
231 } elsif (not $old_dbd_warned) {
232 carp "Your DBD::Sybase is too old to support ".
233 "DBIx::Class::InflateColumn::DateTime, please upgrade!";
237 $dbh->do('set dateformat mdy');
243 sub datetime_parser_type { "DateTime::Format::Sybase" }
245 sub _dbh_last_insert_id {
246 my ($self, $dbh, $source, $col) = @_;
248 # sorry, there's no other way!
249 my $sth = $dbh->prepare_cached("select max($col) from ".$source->from);
250 return ($dbh->selectrow_array($sth))[0];
257 See L</connect_call_datetime_setup> to setup date formats
258 for L<DBIx::Class::InflateColumn::DateTime>.
260 =head1 IMAGE AND TEXT COLUMNS
262 See L</connect_call_blob_setup> for a L<DBIx::Class::Storage::DBI/connect_info>
263 setting you need to work with C<IMAGE> columns.
265 Due to limitations in L<DBD::Sybase> and this driver, it is only possible to
266 select one C<TEXT> or C<IMAGE> column at a time.
270 See L<DBIx::Class/CONTRIBUTORS>.
274 You may distribute this code under the same terms as Perl itself.