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3885cff6 |
1 | package DBIx::Class::Storage::DBI::Sybase; |
2 | |
3 | use strict; |
4 | use warnings; |
eabab5d0 |
5 | use mro 'c3'; |
6 | use base qw/ |
64f4e691 |
7 | DBIx::Class::Storage::DBI::Sybase::Base |
b0b44f97 |
8 | DBIx::Class::Storage::DBI |
eabab5d0 |
9 | /; |
6b1f5ef7 |
10 | use Carp::Clan qw/^DBIx::Class/; |
11 | |
98259fe4 |
12 | =head1 NAME |
13 | |
14 | DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase |
15 | |
16 | =head1 SYNOPSIS |
17 | |
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>. |
21 | |
22 | =head1 DESCRIPTION |
23 | |
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. |
27 | |
28 | With this driver there is unfortunately no way to get the C<last_insert_id> |
29 | without doing a C<select max(col)>. |
30 | |
31 | But your queries will be cached. |
32 | |
fd5a07e4 |
33 | A recommended L<DBIx::Class::Storage::DBI/connect_info> settings: |
98259fe4 |
34 | |
fd5a07e4 |
35 | on_connect_call => [['datetime_setup'], [blob_setup => log_on_update => 0]] |
98259fe4 |
36 | |
37 | =head1 METHODS |
38 | |
39 | =cut |
40 | |
fd5a07e4 |
41 | __PACKAGE__->mk_group_accessors('simple' => |
42 | qw/_blob_log_on_update/ |
43 | ); |
44 | |
47d9646a |
45 | sub _rebless { |
b50a5275 |
46 | my $self = shift; |
c5ce7cd6 |
47 | |
48 | if (ref($self) eq 'DBIx::Class::Storage::DBI::Sybase') { |
49 | my $dbtype = eval { |
50 | @{$self->dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2] |
51 | } || ''; |
52 | |
53 | my $exception = $@; |
54 | $dbtype =~ s/\W/_/gi; |
55 | my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}"; |
56 | |
57 | if (!$exception && $dbtype && $self->load_optional_class($subclass)) { |
58 | bless $self, $subclass; |
59 | $self->_rebless; |
683f73ec |
60 | } else { |
61 | # real Sybase |
62 | if (not $self->dbh->{syb_dynamic_supported}) { |
d71d78d8 |
63 | $self->ensure_class_loaded('DBIx::Class::Storage::DBI::Sybase::NoBindVars'); |
64 | bless $self, 'DBIx::Class::Storage::DBI::Sybase::NoBindVars'; |
683f73ec |
65 | $self->_rebless; |
66 | } |
47d9646a |
67 | } |
c5ce7cd6 |
68 | } |
b50a5275 |
69 | } |
70 | |
63d46bb3 |
71 | =head2 connect_call_blob_setup |
72 | |
73 | Used as: |
74 | |
fd5a07e4 |
75 | on_connect_call => [ [ blob_setup => log_on_update => 0 ] ] |
63d46bb3 |
76 | |
77 | Does C<< $dbh->{syb_binary_images} = 1; >> to return C<IMAGE> data as raw binary |
78 | instead of as a hex string. |
79 | |
6636ad53 |
80 | Recommended. |
81 | |
fd5a07e4 |
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. |
84 | |
85 | See |
86 | L<DBD::Sybase/Handling_IMAGE/TEXT_data_with_syb_ct_get_data()/syb_ct_send_data()>. |
87 | |
63d46bb3 |
88 | =cut |
89 | |
90 | sub connect_call_blob_setup { |
91 | my $self = shift; |
fd5a07e4 |
92 | my %args = @_; |
63d46bb3 |
93 | my $dbh = $self->_dbh; |
94 | $dbh->{syb_binary_images} = 1; |
fd5a07e4 |
95 | |
96 | $self->_blob_log_on_update($args{log_on_update}) |
97 | if exists $args{log_on_update}; |
98 | } |
99 | |
100 | sub _is_lob_type { |
101 | my $self = shift; |
102 | shift =~ /(?:text|image|lob|bytea|binary)/i; |
103 | } |
104 | |
105 | sub insert { |
7d17f469 |
106 | my ($self, $source, $to_insert) = splice @_, 0, 3; |
107 | |
108 | my $blob_cols = $self->_remove_blob_cols($source, $to_insert); |
109 | |
110 | my $updated_cols = $self->next::method($source, $to_insert, @_); |
111 | |
112 | $self->_update_blobs($source, $blob_cols, $to_insert) if %$blob_cols; |
113 | |
114 | return $updated_cols; |
115 | } |
116 | |
117 | #sub update { |
118 | # my ($self, $source) = splice @_, 0, 2; |
119 | # my ($fields) = @_; |
120 | # |
121 | # my $blob_cols = $self->_remove_blob_cols($source, $fields); |
122 | # |
123 | # my @res = 1; |
124 | # |
125 | # if (%$fields) { |
126 | # if (wantarray) { |
127 | # @res = $self->next::method($source, @_); |
128 | # } else { |
129 | # $res[0] = $self->next::method($source, @_); |
130 | # } |
131 | # } |
132 | # |
133 | # $self->_update_blobs($source, $blob_cols, $fields) if %$blob_cols; |
134 | # |
135 | # return wantarray ? @res : $res[0]; |
136 | #} |
137 | |
138 | sub _remove_blob_cols { |
139 | my ($self, $source, $fields) = @_; |
fd5a07e4 |
140 | |
141 | my %blob_cols; |
142 | |
7d17f469 |
143 | for my $col (keys %$fields) { |
144 | $blob_cols{$col} = delete $fields->{$col} |
fd5a07e4 |
145 | if $self->_is_lob_type($source->column_info($col)->{data_type}); |
146 | } |
147 | |
7d17f469 |
148 | return \%blob_cols; |
fd5a07e4 |
149 | } |
150 | |
151 | sub _update_blobs { |
152 | my ($self, $source, $blob_cols, $inserted) = @_; |
153 | my $dbh = $self->dbh; |
154 | |
155 | my $table = $source->from; |
156 | |
157 | my (@primary_cols) = $source->primary_columns; |
158 | |
159 | croak "Cannot update TEXT/IMAGE without a primary key!" |
160 | unless @primary_cols; |
161 | |
162 | my $search_cond = join ',' => map "$_ = ?", @primary_cols; |
163 | |
164 | for my $col (keys %$blob_cols) { |
165 | my $blob = $blob_cols->{$col}; |
166 | |
167 | # First update to empty string in case it's NULL, can't update a NULL blob using |
168 | # the API. |
169 | my $sth = $dbh->prepare_cached( |
170 | qq{update $table set $col = '' where $search_cond} |
171 | ); |
172 | $sth->execute(map $inserted->{$_}, @primary_cols) or die $sth->errstr; |
173 | $sth->finish; |
174 | |
175 | $sth = $dbh->prepare_cached( |
176 | "select $col from $table where $search_cond" |
177 | ); |
178 | $sth->execute(map $inserted->{$_}, @primary_cols); |
179 | |
180 | eval { |
181 | while ($sth->fetch) { |
182 | $sth->func('CS_GET', 1, 'ct_data_info') or die $sth->errstr; |
183 | } |
184 | $sth->func('ct_prepare_send') or die $sth->errstr; |
185 | |
186 | my $log_on_update = $self->_blob_log_on_update; |
187 | $log_on_update = 1 if not defined $log_on_update; |
188 | |
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; |
193 | |
194 | $sth->func($blob, length($blob), 'ct_send_data') or die $sth->errstr; |
195 | |
196 | $sth->func('ct_finish_send') or die $sth->errstr; |
197 | }; |
198 | my $exception = $@; |
199 | $sth->finish; |
200 | croak $exception if $exception; |
201 | } |
63d46bb3 |
202 | } |
203 | |
9539eeb1 |
204 | =head2 connect_call_datetime_setup |
205 | |
206 | Used as: |
207 | |
208 | on_connect_call => 'datetime_setup' |
209 | |
210 | In L<DBIx::Class::Storage::DBI/connect_info> to set: |
211 | |
3abafb11 |
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 |
9539eeb1 |
214 | |
215 | On connection for use with L<DBIx::Class::InflateColumn::DateTime>, using |
3abafb11 |
216 | L<DateTime::Format::Sybase>, which you will need to install. |
217 | |
218 | This works for both C<DATETIME> and C<SMALLDATETIME> columns, although |
219 | C<SMALLDATETIME> columns only have minute precision. |
9539eeb1 |
220 | |
221 | =cut |
222 | |
9041a97a |
223 | { |
224 | my $old_dbd_warned = 0; |
225 | |
9539eeb1 |
226 | sub connect_call_datetime_setup { |
6b1f5ef7 |
227 | my $self = shift; |
6b1f5ef7 |
228 | my $dbh = $self->_dbh; |
229 | |
230 | if ($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!"; |
235 | $old_dbd_warned = 1; |
236 | } |
237 | |
238 | $dbh->do('set dateformat mdy'); |
c5ce7cd6 |
239 | |
6b1f5ef7 |
240 | 1; |
c5ce7cd6 |
241 | } |
6b1f5ef7 |
242 | } |
243 | |
6636ad53 |
244 | sub datetime_parser_type { "DateTime::Format::Sybase" } |
245 | |
6b1f5ef7 |
246 | sub _dbh_last_insert_id { |
247 | my ($self, $dbh, $source, $col) = @_; |
c5ce7cd6 |
248 | |
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]; |
a964a928 |
252 | } |
253 | |
3885cff6 |
254 | 1; |
255 | |
c5ce7cd6 |
256 | =head1 DATES |
257 | |
3abafb11 |
258 | See L</connect_call_datetime_setup> to setup date formats |
259 | for L<DBIx::Class::InflateColumn::DateTime>. |
c5ce7cd6 |
260 | |
6636ad53 |
261 | =head1 IMAGE AND TEXT COLUMNS |
63d46bb3 |
262 | |
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. |
265 | |
6636ad53 |
266 | Due to limitations in L<DBD::Sybase> and this driver, it is only possible to |
9041a97a |
267 | select one C<TEXT> or C<IMAGE> column at a time. |
6636ad53 |
268 | |
3885cff6 |
269 | =head1 AUTHORS |
270 | |
7e8cecc1 |
271 | See L<DBIx::Class/CONTRIBUTORS>. |
c5ce7cd6 |
272 | |
3885cff6 |
273 | =head1 LICENSE |
274 | |
275 | You may distribute this code under the same terms as Perl itself. |
276 | |
277 | =cut |
c5ce7cd6 |
278 | # vim:sts=2 sw=2: |