1 package DBIx::Class::Storage::DBI::Oracle::Generic;
8 DBIx::Class::Storage::DBI::Oracle::Generic - Oracle Support for DBIx::Class
12 # In your table classes
13 __PACKAGE__->load_components(qw/PK::Auto Core/);
14 __PACKAGE__->add_columns({ id => { sequence => 'mysequence', auto_nextval => 1 } });
15 __PACKAGE__->set_primary_key('id');
16 __PACKAGE__->sequence('mysequence');
20 This class implements autoincrements for Oracle.
26 use base qw/DBIx::Class::Storage::DBI/;
29 sub _dbh_last_insert_id {
30 my ($self, $dbh, $source, @columns) = @_;
32 foreach my $col (@columns) {
33 my $seq = ($source->column_info($col)->{sequence} ||= $self->get_autoinc_seq($source,$col));
34 my $id = $self->_sequence_fetch( 'currval', $seq );
40 sub _dbh_get_autoinc_seq {
41 my ($self, $dbh, $source, $col) = @_;
43 # look up the correct sequence automatically
45 SELECT trigger_body FROM ALL_TRIGGERS t
46 WHERE t.table_name = ?
47 AND t.triggering_event = 'INSERT'
48 AND t.status = 'ENABLED'
51 # trigger_body is a LONG
52 local $dbh->{LongReadLen} = 64 * 1024 if ($dbh->{LongReadLen} < 64 * 1024);
57 if ( ref $source->name ne 'SCALAR' ) {
58 $source_name = $source->name;
61 $source_name = ${$source->name};
64 # check for fully-qualified name (eg. SCHEMA.TABLENAME)
65 if ( my ( $schema, $table ) = $source_name =~ /(\w+)\.(\w+)/ ) {
67 SELECT trigger_body FROM ALL_TRIGGERS t
68 WHERE t.owner = ? AND t.table_name = ?
69 AND t.triggering_event = 'INSERT'
70 AND t.status = 'ENABLED'
72 $sth = $dbh->prepare($sql);
73 $sth->execute( uc($schema), uc($table) );
76 $sth = $dbh->prepare($sql);
77 $sth->execute( uc( $source_name ) );
79 while (my ($insert_trigger) = $sth->fetchrow_array) {
80 return uc($1) if $insert_trigger =~ m!(\w+)\.nextval!i; # col name goes here???
82 $self->throw_exception("Unable to find a sequence INSERT trigger on table '" . $source->name . "'.");
86 my ( $self, $type, $seq ) = @_;
87 my ($id) = $self->_get_dbh->selectrow_array("SELECT ${seq}.${type} FROM DUAL");
94 my $dbh = $self->_dbh or return 0;
96 local $dbh->{RaiseError} = 1;
99 $dbh->do("select 1 from dual");
107 my ($dbh, $op, $extra_bind, $ident, $bind_attributes, @args) = @_;
109 my $wantarray = wantarray;
111 my (@res, $exception, $retried);
117 @res = $self->next::method(@_);
119 $res[0] = $self->next::method(@_);
123 if ($exception =~ /ORA-01003/) {
124 # ORA-01003: no statement parsed (someone changed the table somehow,
125 # invalidating your cursor.)
126 my ($sql, $bind) = $self->_prep_for_execute($op, $extra_bind, $ident, \@args);
127 delete $dbh->{CachedKids}{$sql};
131 } while (not $retried++);
134 $self->throw_exception($exception) if $exception;
136 wantarray ? @res : $res[0]
139 =head2 get_autoinc_seq
141 Returns the sequence name for an autoincrement column
145 sub get_autoinc_seq {
146 my ($self, $source, $col) = @_;
148 $self->dbh_do('_dbh_get_autoinc_seq', $source, $col);
151 =head2 columns_info_for
153 This wraps the superclass version of this method to force table
158 sub columns_info_for {
159 my ($self, $table) = @_;
161 $self->next::method(uc($table));
164 =head2 datetime_parser_type
166 This sets the proper DateTime::Format module for use with
167 L<DBIx::Class::InflateColumn::DateTime>.
171 sub datetime_parser_type { return "DateTime::Format::Oracle"; }
173 =head2 connect_call_datetime_setup
177 on_connect_call => 'datetime_setup'
179 In L<DBIx::Class::Storage::DBI/connect_info> to set the session nls date, and
180 timestamp values for use with L<DBIx::Class::InflateColumn::DateTime> and the
181 necessary environment variables for L<DateTime::Format::Oracle>, which is used
184 Maximum allowable precision is used, unless the environment variables have
187 These are the defaults used:
189 $ENV{NLS_DATE_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS';
190 $ENV{NLS_TIMESTAMP_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS.FF';
191 $ENV{NLS_TIMESTAMP_TZ_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS.FF TZHTZM';
193 To get more than second precision with L<DBIx::Class::InflateColumn::DateTime>
194 for your timestamps, use something like this:
196 use Time::HiRes 'time';
197 my $ts = DateTime->from_epoch(epoch => time);
201 sub connect_call_datetime_setup {
204 my $date_format = $ENV{NLS_DATE_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS';
205 my $timestamp_format = $ENV{NLS_TIMESTAMP_FORMAT} ||=
206 'YYYY-MM-DD HH24:MI:SS.FF';
207 my $timestamp_tz_format = $ENV{NLS_TIMESTAMP_TZ_FORMAT} ||=
208 'YYYY-MM-DD HH24:MI:SS.FF TZHTZM';
210 $self->_do_query("alter session set nls_date_format = '$date_format'");
212 "alter session set nls_timestamp_format = '$timestamp_format'");
214 "alter session set nls_timestamp_tz_format='$timestamp_tz_format'");
217 =head2 source_bind_attributes
219 Handle LOB types in Oracle. Under a certain size (4k?), you can get away
220 with the driver assuming your input is the deprecated LONG type if you
221 encode it as a hex string. That ain't gonna fly at larger values, where
222 you'll discover you have to do what this does.
224 This method had to be overridden because we need to set ora_field to the
225 actual column, and that isn't passed to the call (provided by Storage) to
226 bind_attribute_by_data_type.
228 According to L<DBD::Oracle>, the ora_field isn't always necessary, but
229 adding it doesn't hurt, and will save your bacon if you're modifying a
230 table with more than one LOB column.
234 sub source_bind_attributes
242 foreach my $column ($source->columns) {
243 my $data_type = $source->column_info($column)->{data_type} || '';
244 next unless $data_type;
246 my %column_bind_attrs = $self->bind_attribute_by_data_type($data_type);
248 if ($data_type =~ /^[BC]LOB$/i) {
249 $column_bind_attrs{'ora_type'} = uc($data_type) eq 'CLOB' ?
250 DBD::Oracle::ORA_CLOB() :
251 DBD::Oracle::ORA_BLOB();
252 $column_bind_attrs{'ora_field'} = $column;
255 $bind_attributes{$column} = \%column_bind_attrs;
258 return \%bind_attributes;
262 my ($self, $name) = @_;
264 $self->_get_dbh->do("SAVEPOINT $name");
267 # Oracle automatically releases a savepoint when you start another one with the
269 sub _svp_release { 1 }
272 my ($self, $name) = @_;
274 $self->_get_dbh->do("ROLLBACK TO SAVEPOINT $name")
279 See L<DBIx::Class/CONTRIBUTORS>.
283 You may distribute this code under the same terms as Perl itself.