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1 | package DBIx::Class::Storage::DBI::Sybase; |
2 | |
3 | use strict; |
4 | use warnings; |
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5 | |
eabab5d0 |
6 | use base qw/ |
64f4e691 |
7 | DBIx::Class::Storage::DBI::Sybase::Base |
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8 | DBIx::Class::Storage::DBI |
eabab5d0 |
9 | /; |
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10 | use mro 'c3'; |
6b1f5ef7 |
11 | use Carp::Clan qw/^DBIx::Class/; |
12 | |
98259fe4 |
13 | =head1 NAME |
14 | |
15 | DBIx::Class::Storage::DBI::Sybase - Storage::DBI subclass for Sybase |
16 | |
17 | =head1 SYNOPSIS |
18 | |
19 | This subclass supports L<DBD::Sybase> for real Sybase databases. If you are |
20 | using an MSSQL database via L<DBD::Sybase>, your storage will be reblessed to |
21 | L<DBIx::Class::Storage::DBI::Sybase::Microsoft_SQL_Server>. |
22 | |
23 | =head1 DESCRIPTION |
24 | |
25 | If your version of Sybase does not support placeholders, then your storage |
26 | will be reblessed to L<DBIx::Class::Storage::DBI::Sybase::NoBindVars>. You can |
27 | also enable that driver explicitly, see the documentation for more details. |
28 | |
29 | With this driver there is unfortunately no way to get the C<last_insert_id> |
30 | without doing a C<select max(col)>. |
31 | |
32 | But your queries will be cached. |
33 | |
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34 | A recommended L<DBIx::Class::Storage::DBI/connect_info> settings: |
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35 | |
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36 | on_connect_call => [['datetime_setup'], [blob_setup => log_on_update => 0]] |
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37 | |
38 | =head1 METHODS |
39 | |
40 | =cut |
41 | |
fd5a07e4 |
42 | __PACKAGE__->mk_group_accessors('simple' => |
43 | qw/_blob_log_on_update/ |
44 | ); |
45 | |
47d9646a |
46 | sub _rebless { |
b50a5275 |
47 | my $self = shift; |
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48 | |
49 | if (ref($self) eq 'DBIx::Class::Storage::DBI::Sybase') { |
50 | my $dbtype = eval { |
51 | @{$self->dbh->selectrow_arrayref(qq{sp_server_info \@attribute_id=1})}[2] |
52 | } || ''; |
53 | |
54 | my $exception = $@; |
55 | $dbtype =~ s/\W/_/gi; |
56 | my $subclass = "DBIx::Class::Storage::DBI::Sybase::${dbtype}"; |
57 | |
58 | if (!$exception && $dbtype && $self->load_optional_class($subclass)) { |
59 | bless $self, $subclass; |
60 | $self->_rebless; |
683f73ec |
61 | } else { |
62 | # real Sybase |
63 | if (not $self->dbh->{syb_dynamic_supported}) { |
d71d78d8 |
64 | $self->ensure_class_loaded('DBIx::Class::Storage::DBI::Sybase::NoBindVars'); |
65 | bless $self, 'DBIx::Class::Storage::DBI::Sybase::NoBindVars'; |
683f73ec |
66 | $self->_rebless; |
67 | } |
47d9646a |
68 | } |
c5ce7cd6 |
69 | } |
b50a5275 |
70 | } |
71 | |
63d46bb3 |
72 | =head2 connect_call_blob_setup |
73 | |
74 | Used as: |
75 | |
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76 | on_connect_call => [ [ blob_setup => log_on_update => 0 ] ] |
63d46bb3 |
77 | |
78 | Does C<< $dbh->{syb_binary_images} = 1; >> to return C<IMAGE> data as raw binary |
79 | instead of as a hex string. |
80 | |
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81 | Recommended. |
82 | |
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83 | Also sets the C<log_on_update> value for blob write operations. The default is |
84 | C<1>, but C<0> is better if your database is configured for it. |
85 | |
86 | See |
87 | L<DBD::Sybase/Handling_IMAGE/TEXT_data_with_syb_ct_get_data()/syb_ct_send_data()>. |
88 | |
63d46bb3 |
89 | =cut |
90 | |
91 | sub connect_call_blob_setup { |
92 | my $self = shift; |
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93 | my %args = @_; |
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94 | my $dbh = $self->_dbh; |
95 | $dbh->{syb_binary_images} = 1; |
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96 | |
97 | $self->_blob_log_on_update($args{log_on_update}) |
98 | if exists $args{log_on_update}; |
99 | } |
100 | |
101 | sub _is_lob_type { |
102 | my $self = shift; |
103 | shift =~ /(?:text|image|lob|bytea|binary)/i; |
104 | } |
105 | |
106 | sub insert { |
7d17f469 |
107 | my ($self, $source, $to_insert) = splice @_, 0, 3; |
108 | |
109 | my $blob_cols = $self->_remove_blob_cols($source, $to_insert); |
110 | |
111 | my $updated_cols = $self->next::method($source, $to_insert, @_); |
112 | |
113 | $self->_update_blobs($source, $blob_cols, $to_insert) if %$blob_cols; |
114 | |
115 | return $updated_cols; |
116 | } |
117 | |
118 | #sub update { |
119 | # my ($self, $source) = splice @_, 0, 2; |
120 | # my ($fields) = @_; |
121 | # |
122 | # my $blob_cols = $self->_remove_blob_cols($source, $fields); |
123 | # |
124 | # my @res = 1; |
125 | # |
126 | # if (%$fields) { |
127 | # if (wantarray) { |
128 | # @res = $self->next::method($source, @_); |
129 | # } else { |
130 | # $res[0] = $self->next::method($source, @_); |
131 | # } |
132 | # } |
133 | # |
134 | # $self->_update_blobs($source, $blob_cols, $fields) if %$blob_cols; |
135 | # |
136 | # return wantarray ? @res : $res[0]; |
137 | #} |
138 | |
139 | sub _remove_blob_cols { |
140 | my ($self, $source, $fields) = @_; |
fd5a07e4 |
141 | |
142 | my %blob_cols; |
143 | |
7d17f469 |
144 | for my $col (keys %$fields) { |
145 | $blob_cols{$col} = delete $fields->{$col} |
fd5a07e4 |
146 | if $self->_is_lob_type($source->column_info($col)->{data_type}); |
147 | } |
148 | |
7d17f469 |
149 | return \%blob_cols; |
fd5a07e4 |
150 | } |
151 | |
152 | sub _update_blobs { |
153 | my ($self, $source, $blob_cols, $inserted) = @_; |
154 | my $dbh = $self->dbh; |
155 | |
156 | my $table = $source->from; |
157 | |
158 | my (@primary_cols) = $source->primary_columns; |
159 | |
160 | croak "Cannot update TEXT/IMAGE without a primary key!" |
161 | unless @primary_cols; |
162 | |
163 | my $search_cond = join ',' => map "$_ = ?", @primary_cols; |
164 | |
165 | for my $col (keys %$blob_cols) { |
166 | my $blob = $blob_cols->{$col}; |
167 | |
168 | # First update to empty string in case it's NULL, can't update a NULL blob using |
169 | # the API. |
170 | my $sth = $dbh->prepare_cached( |
171 | qq{update $table set $col = '' where $search_cond} |
172 | ); |
173 | $sth->execute(map $inserted->{$_}, @primary_cols) or die $sth->errstr; |
174 | $sth->finish; |
175 | |
176 | $sth = $dbh->prepare_cached( |
177 | "select $col from $table where $search_cond" |
178 | ); |
179 | $sth->execute(map $inserted->{$_}, @primary_cols); |
180 | |
181 | eval { |
182 | while ($sth->fetch) { |
183 | $sth->func('CS_GET', 1, 'ct_data_info') or die $sth->errstr; |
184 | } |
185 | $sth->func('ct_prepare_send') or die $sth->errstr; |
186 | |
187 | my $log_on_update = $self->_blob_log_on_update; |
188 | $log_on_update = 1 if not defined $log_on_update; |
189 | |
190 | $sth->func('CS_SET', 1, { |
191 | total_txtlen => length($blob), |
192 | log_on_update => $log_on_update |
193 | }, 'ct_data_info') or die $sth->errstr; |
194 | |
195 | $sth->func($blob, length($blob), 'ct_send_data') or die $sth->errstr; |
196 | |
197 | $sth->func('ct_finish_send') or die $sth->errstr; |
198 | }; |
199 | my $exception = $@; |
200 | $sth->finish; |
201 | croak $exception if $exception; |
202 | } |
63d46bb3 |
203 | } |
204 | |
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205 | =head2 connect_call_datetime_setup |
206 | |
207 | Used as: |
208 | |
209 | on_connect_call => 'datetime_setup' |
210 | |
211 | In L<DBIx::Class::Storage::DBI/connect_info> to set: |
212 | |
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213 | $dbh->syb_date_fmt('ISO_strict'); # output fmt: 2004-08-21T14:36:48.080Z |
214 | $dbh->do('set dateformat mdy'); # input fmt: 08/13/1979 18:08:55.080 |
9539eeb1 |
215 | |
216 | On connection for use with L<DBIx::Class::InflateColumn::DateTime>, using |
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217 | L<DateTime::Format::Sybase>, which you will need to install. |
218 | |
219 | This works for both C<DATETIME> and C<SMALLDATETIME> columns, although |
220 | C<SMALLDATETIME> columns only have minute precision. |
9539eeb1 |
221 | |
222 | =cut |
223 | |
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224 | { |
225 | my $old_dbd_warned = 0; |
226 | |
9539eeb1 |
227 | sub connect_call_datetime_setup { |
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228 | my $self = shift; |
6b1f5ef7 |
229 | my $dbh = $self->_dbh; |
230 | |
231 | if ($dbh->can('syb_date_fmt')) { |
232 | $dbh->syb_date_fmt('ISO_strict'); |
233 | } elsif (not $old_dbd_warned) { |
234 | carp "Your DBD::Sybase is too old to support ". |
235 | "DBIx::Class::InflateColumn::DateTime, please upgrade!"; |
236 | $old_dbd_warned = 1; |
237 | } |
238 | |
239 | $dbh->do('set dateformat mdy'); |
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240 | |
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241 | 1; |
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242 | } |
6b1f5ef7 |
243 | } |
244 | |
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245 | sub datetime_parser_type { "DateTime::Format::Sybase" } |
246 | |
6b1f5ef7 |
247 | sub _dbh_last_insert_id { |
248 | my ($self, $dbh, $source, $col) = @_; |
c5ce7cd6 |
249 | |
250 | # sorry, there's no other way! |
251 | my $sth = $dbh->prepare_cached("select max($col) from ".$source->from); |
252 | return ($dbh->selectrow_array($sth))[0]; |
a964a928 |
253 | } |
254 | |
3885cff6 |
255 | 1; |
256 | |
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257 | =head1 DATES |
258 | |
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259 | See L</connect_call_datetime_setup> to setup date formats |
260 | for L<DBIx::Class::InflateColumn::DateTime>. |
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261 | |
6636ad53 |
262 | =head1 IMAGE AND TEXT COLUMNS |
63d46bb3 |
263 | |
264 | See L</connect_call_blob_setup> for a L<DBIx::Class::Storage::DBI/connect_info> |
265 | setting you need to work with C<IMAGE> columns. |
266 | |
6636ad53 |
267 | Due to limitations in L<DBD::Sybase> and this driver, it is only possible to |
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268 | select one C<TEXT> or C<IMAGE> column at a time. |
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269 | |
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270 | =head1 AUTHORS |
271 | |
7e8cecc1 |
272 | See L<DBIx::Class/CONTRIBUTORS>. |
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273 | |
3885cff6 |
274 | =head1 LICENSE |
275 | |
276 | You may distribute this code under the same terms as Perl itself. |
277 | |
278 | =cut |
c5ce7cd6 |
279 | # vim:sts=2 sw=2: |