package DBIx::Class::Storage::DBI::Oracle::Generic;
-# -*- mode: cperl; cperl-indent-level: 2 -*-
use strict;
use warnings;
-use Carp::Clan qw/^DBIx::Class/;
+=head1 NAME
-use base qw/DBIx::Class::Storage::DBI::MultiDistinctEmulation/;
+DBIx::Class::Storage::DBI::Oracle::Generic - Automatic primary key class for Oracle
-# __PACKAGE__->load_components(qw/PK::Auto/);
+=head1 SYNOPSIS
+
+ # In your table classes
+ __PACKAGE__->load_components(qw/PK::Auto Core/);
+ __PACKAGE__->add_columns({ id => { sequence => 'mysequence', auto_nextval => 1 } });
+ __PACKAGE__->set_primary_key('id');
+ __PACKAGE__->sequence('mysequence');
+
+=head1 DESCRIPTION
+
+This class implements autoincrements for Oracle.
+
+=head1 METHODS
+
+=cut
+
+use base qw/DBIx::Class::Storage::DBI/;
+use Carp::Clan qw/^DBIx::Class/;
+
+# For ORA_BLOB => 113, ORA_CLOB => 112
+use DBD::Oracle qw( :ora_types );
sub _dbh_last_insert_id {
- my ($self, $dbh, $source, $col) = @_;
- my $seq = ($source->column_info($col)->{sequence} ||= $self->get_autoinc_seq($source,$col));
- my $sql = 'SELECT ' . $seq . '.currval FROM DUAL';
- my ($id) = $dbh->selectrow_array($sql);
- return $id;
+ my ($self, $dbh, $source, @columns) = @_;
+ my @ids = ();
+ foreach my $col (@columns) {
+ my $seq = ($source->column_info($col)->{sequence} ||= $self->get_autoinc_seq($source,$col));
+ my $id = $self->_sequence_fetch( 'currval', $seq );
+ push @ids, $id;
+ }
+ return @ids;
}
sub _dbh_get_autoinc_seq {
# trigger_body is a LONG
$dbh->{LongReadLen} = 64 * 1024 if ($dbh->{LongReadLen} < 64 * 1024);
- my $sth = $dbh->prepare($sql);
- $sth->execute( uc($source->name) );
+ my $sth;
+
+ # check for fully-qualified name (eg. SCHEMA.TABLENAME)
+ if ( my ( $schema, $table ) = $source->name =~ /(\w+)\.(\w+)/ ) {
+ $sql = q{
+ SELECT trigger_body FROM ALL_TRIGGERS t
+ WHERE t.owner = ? AND t.table_name = ?
+ AND t.triggering_event = 'INSERT'
+ AND t.status = 'ENABLED'
+ };
+ $sth = $dbh->prepare($sql);
+ $sth->execute( uc($schema), uc($table) );
+ }
+ else {
+ $sth = $dbh->prepare($sql);
+ $sth->execute( uc( $source->name ) );
+ }
while (my ($insert_trigger) = $sth->fetchrow_array) {
return uc($1) if $insert_trigger =~ m!(\w+)\.nextval!i; # col name goes here???
}
- croak "Unable to find a sequence INSERT trigger on table '" . $source->name . "'.";
+ $self->throw_exception("Unable to find a sequence INSERT trigger on table '" . $source->name . "'.");
+}
+
+sub _sequence_fetch {
+ my ( $self, $type, $seq ) = @_;
+ my ($id) = $self->dbh->selectrow_array("SELECT ${seq}.${type} FROM DUAL");
+ return $id;
+}
+
+=head2 connected
+
+Returns true if we have an open (and working) database connection, false if it is not (yet)
+open (or does not work). (Executes a simple SELECT to make sure it works.)
+
+The reason this is needed is that L<DBD::Oracle>'s ping() does not do a real
+OCIPing but just gets the server version, which doesn't help if someone killed
+your session.
+
+=cut
+
+sub connected {
+ my $self = shift;
+
+ if (not $self->SUPER::connected(@_)) {
+ return 0;
+ }
+ else {
+ my $dbh = $self->_dbh;
+
+ local $dbh->{RaiseError} = 1;
+
+ eval {
+ my $ping_sth = $dbh->prepare_cached("select 1 from dual");
+ $ping_sth->execute;
+ $ping_sth->finish;
+ };
+
+ return $@ ? 0 : 1;
+ }
+}
+
+sub _dbh_execute {
+ my $self = shift;
+ my ($dbh, $op, $extra_bind, $ident, $bind_attributes, @args) = @_;
+
+ my $wantarray = wantarray;
+
+ my (@res, $exception, $retried);
+
+ RETRY: {
+ do {
+ eval {
+ if ($wantarray) {
+ @res = $self->SUPER::_dbh_execute(@_);
+ } else {
+ $res[0] = $self->SUPER::_dbh_execute(@_);
+ }
+ };
+ $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 RETRY;
+ }
+ } while (not $retried++);
+ }
+
+ $self->throw_exception($exception) if $exception;
+
+ wantarray ? @res : $res[0]
}
+=head2 get_autoinc_seq
+
+Returns the sequence name for an autoincrement column
+
+=cut
+
sub get_autoinc_seq {
my ($self, $source, $col) = @_;
- $self->dbh_do($self->can('_dbh_get_autoinc_seq'), $source, $col);
+ $self->dbh_do('_dbh_get_autoinc_seq', $source, $col);
}
+=head2 columns_info_for
+
+This wraps the superclass version of this method to force table
+names to uppercase
+
+=cut
+
sub columns_info_for {
my ($self, $table) = @_;
$self->next::method(uc($table));
}
+=head2 datetime_parser_type
-1;
+This sets the proper DateTime::Format module for use with
+L<DBIx::Class::InflateColumn::DateTime>.
-=head1 NAME
+=cut
-DBIx::Class::Storage::DBI::Oracle - Automatic primary key class for Oracle
+sub datetime_parser_type { return "DateTime::Format::Oracle"; }
-=head1 SYNOPSIS
+sub _svp_begin {
+ my ($self, $name) = @_;
+
+ $self->dbh->do("SAVEPOINT $name");
+}
- # In your table classes
- __PACKAGE__->load_components(qw/PK::Auto Core/);
- __PACKAGE__->set_primary_key('id');
- __PACKAGE__->sequence('mysequence');
+=head2 source_bind_attributes
-=head1 DESCRIPTION
+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 class implements autoincrements for Oracle.
+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 }
+
+sub _svp_rollback {
+ my ($self, $name) = @_;
+
+ $self->dbh->do("ROLLBACK TO SAVEPOINT $name")
+}
=head1 AUTHORS
You may distribute this code under the same terms as Perl itself.
=cut
+
+1;
projects / dbsrgits/DBIx-Class.git / blobdiff