package DBIx::Class::Storage::DBI::Oracle::Generic;
-# -*- mode: cperl; cperl-indent-level: 2 -*-
use strict;
use warnings;
=cut
-use Carp::Clan qw/^DBIx::Class/;
-use Scalar::Util ();
+use base qw/DBIx::Class::Storage::DBI/;
+use mro 'c3';
-use base qw/DBIx::Class::Storage::DBI::MultiDistinctEmulation/;
-
-# __PACKAGE__->load_components(qw/PK::Auto/);
+# For ORA_BLOB => 113, ORA_CLOB => 112
+use DBD::Oracle qw( :ora_types );
sub _dbh_last_insert_id {
my ($self, $dbh, $source, @columns) = @_;
return $id;
}
-sub connected {
+sub _ping {
my $self = shift;
-
- if ($self->SUPER::connected(@_)) {
- my $dbh = $self->_dbh;
-
- my $ping_sth = $dbh->prepare_cached("select 1 from dual");
-
- local $dbh->{RaiseError} = 1;
- eval {
- $ping_sth->execute;
- $ping_sth->finish;
- };
-
- if ($@) {
- return 0;
- } else {
- return 1;
- }
- }
-
- return 0;
+
+ my $dbh = $self->_dbh or return 0;
+
+ local $dbh->{RaiseError} = 1;
+
+ eval {
+ $dbh->do("select 1 from dual");
+ };
+
+ return $@ ? 0 : 1;
}
sub _dbh_execute {
my ($dbh, $op, $extra_bind, $ident, $bind_attributes, @args) = @_;
my $wantarray = wantarray;
- my @res;
- my $exception;
-
- my $try = 2;
-
- while ($try--) {
- eval {
- if ($wantarray) {
- @res = $self->SUPER::_dbh_execute(@_);
+
+ my (@res, $exception, $retried);
+
+ RETRY: {
+ do {
+ eval {
+ if ($wantarray) {
+ @res = $self->next::method(@_);
+ } else {
+ $res[0] = $self->next::method(@_);
+ }
+ };
+ $exception = $@;
+ if ($exception =~ /ORA-01003/) {
+ # ORA-01003: no statement parsed (someone changed the table somehow,
+ # invalidating your cursor.)
+ my ($sql, $bind) = $self->_prep_for_execute($op, $extra_bind, $ident, \@args);
+ delete $dbh->{CachedKids}{$sql};
} else {
- $res[0] = $self->SUPER::_dbh_execute(@_);
+ last RETRY;
}
- };
- $exception = $@;
- if ($exception =~ /ORA-01003/) {
-# ORA-01003: no statement parsed (someone changed the table somehow,
-# invalidating your cursor.)
- my ($sql, $bind) = $self->_prep_for_execute($op, $extra_bind, $ident, \@args);
- delete $dbh->{CachedKids}{$sql};
- } else {
- last;
- }
+ } while (not $retried++);
}
$self->throw_exception($exception) if $exception;
sub get_autoinc_seq {
my ($self, $source, $col) = @_;
-
+
$self->dbh_do('_dbh_get_autoinc_seq', $source, $col);
}
sub datetime_parser_type { return "DateTime::Format::Oracle"; }
+=head2 connect_call_datetime_setup
+
+Used as:
+
+ on_connect_call => 'datetime_setup'
+
+In L<DBIx::Class::Storage::DBI/connect_info> to set the session nls date, and
+timestamp values for use with L<DBIx::Class::InflateColumn::DateTime> and the
+necessary environment variables for L<DateTime::Format::Oracle>, which is used
+by it.
+
+Maximum allowable precision is used, unless the environment variables have
+already been set.
+
+These are the defaults used:
+
+ $ENV{NLS_DATE_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS';
+ $ENV{NLS_TIMESTAMP_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS.FF';
+ $ENV{NLS_TIMESTAMP_TZ_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS.FF TZHTZM';
+
+To get more than second precision with L<DBIx::Class::InflateColumn::DateTime>
+for your timestamps, use something like this:
+
+ use Time::HiRes 'time';
+ my $ts = DateTime->from_epoch(epoch => time);
+
+=cut
+
+sub connect_call_datetime_setup {
+ my $self = shift;
+ my $dbh = $self->dbh;
+
+ my $date_format = $ENV{NLS_DATE_FORMAT} ||= 'YYYY-MM-DD HH24:MI:SS';
+ my $timestamp_format = $ENV{NLS_TIMESTAMP_FORMAT} ||=
+ 'YYYY-MM-DD HH24:MI:SS.FF';
+ my $timestamp_tz_format = $ENV{NLS_TIMESTAMP_TZ_FORMAT} ||=
+ 'YYYY-MM-DD HH24:MI:SS.FF TZHTZM';
+
+ $dbh->do("alter session set nls_date_format = '$date_format'");
+ $dbh->do("alter session set nls_timestamp_format = '$timestamp_format'");
+ $dbh->do("alter session set nls_timestamp_tz_format='$timestamp_tz_format'");
+}
+
sub _svp_begin {
my ($self, $name) = @_;
-
+
$self->dbh->do("SAVEPOINT $name");
}
+=head2 source_bind_attributes
+
+Handle LOB types in Oracle. Under a certain size (4k?), you can get away
+with the driver assuming your input is the deprecated LONG type if you
+encode it as a hex string. That ain't gonna fly at larger values, where
+you'll discover you have to do what this does.
+
+This method had to be overridden because we need to set ora_field to the
+actual column, and that isn't passed to the call (provided by Storage) to
+bind_attribute_by_data_type.
+
+According to L<DBD::Oracle>, the ora_field isn't always necessary, but
+adding it doesn't hurt, and will save your bacon if you're modifying a
+table with more than one LOB column.
+
+=cut
+
+sub source_bind_attributes
+{
+ my $self = shift;
+ my($source) = @_;
+
+ my %bind_attributes;
+
+ foreach my $column ($source->columns) {
+ my $data_type = $source->column_info($column)->{data_type} || '';
+ next unless $data_type;
+
+ my %column_bind_attrs = $self->bind_attribute_by_data_type($data_type);
+
+ if ($data_type =~ /^[BC]LOB$/i) {
+ $column_bind_attrs{'ora_type'}
+ = uc($data_type) eq 'CLOB' ? ORA_CLOB : ORA_BLOB;
+ $column_bind_attrs{'ora_field'} = $column;
+ }
+
+ $bind_attributes{$column} = \%column_bind_attrs;
+ }
+
+ return \%bind_attributes;
+}
+
# Oracle automatically releases a savepoint when you start another one with the
# same name.
sub _svp_release { 1 }
projects / dbsrgits/DBIx-Class.git / blobdiff