=head1 SYNOPSIS
- # In your table classes
- __PACKAGE__->load_components(qw/PK::Auto Core/);
+ # In your result (table) classes
+ use base 'DBIx::Class::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.
+This class implements base Oracle support. The subclass
+L<DBIx::Class::Storage::DBI::Oracle::WhereJoins> is for C<(+)> joins in Oracle
+versions before 9.
=head1 METHODS
my $sth;
+ my $source_name;
+ if ( ref $source->name ne 'SCALAR' ) {
+ $source_name = $source->name;
+ }
+ else {
+ $source_name = ${$source->name};
+ }
+
# check for fully-qualified name (eg. SCHEMA.TABLENAME)
- if ( my ( $schema, $table ) = $source->name =~ /(\w+)\.(\w+)/ ) {
+ if ( my ( $schema, $table ) = $source_name =~ /(\w+)\.(\w+)/ ) {
$sql = q{
SELECT trigger_body FROM ALL_TRIGGERS t
WHERE t.owner = ? AND t.table_name = ?
}
else {
$sth = $dbh->prepare($sql);
- $sth->execute( uc( $source->name ) );
+ $sth->execute( uc( $source_name ) );
}
while (my ($insert_trigger) = $sth->fetchrow_array) {
return uc($1) if $insert_trigger =~ m!(\w+)\.nextval!i; # col name goes here???
"alter session set nls_timestamp_tz_format='$timestamp_tz_format'");
}
-sub _svp_begin {
- my ($self, $name) = @_;
-
- $self->_get_dbh->do("SAVEPOINT $name");
-}
-
=head2 source_bind_attributes
Handle LOB types in Oracle. Under a certain size (4k?), you can get away
=cut
-sub source_bind_attributes
+sub source_bind_attributes
{
require DBD::Oracle;
my $self = shift;
return \%bind_attributes;
}
+sub _svp_begin {
+ my ($self, $name) = @_;
+
+ $self->_get_dbh->do("SAVEPOINT $name");
+}
+
# Oracle automatically releases a savepoint when you start another one with the
# same name.
sub _svp_release { 1 }
$self->_get_dbh->do("ROLLBACK TO SAVEPOINT $name")
}
+=head2 relname_to_table_alias
+
+L<DBIx::Class> uses L<DBIx::Class::Relationship> names as table aliases in
+queries.
+
+Unfortunately, Oracle doesn't support identifiers over 30 chars in length, so
+the L<DBIx::Class::Relationship> name is shortened and appended with half of an
+MD5 hash.
+
+See L<DBIx::Class::Storage/"relname_to_table_alias">.
+
+=cut
+
+sub relname_to_table_alias {
+ my $self = shift;
+ my ($relname, $join_count) = @_;
+
+ my $alias = $self->next::method(@_);
+
+ return $alias if length($alias) <= 30;
+
+ # get a base64 md5 of the alias with join_count
+ require Digest::MD5;
+ my $ctx = Digest::MD5->new;
+ $ctx->add($alias);
+ my $md5 = $ctx->b64digest;
+
+ # remove alignment mark just in case
+ $md5 =~ s/=*\z//;
+
+ # truncate and prepend to truncated relname without vowels
+ (my $devoweled = $relname) =~ s/[aeiou]//g;
+ my $shortened = substr($devoweled, 0, 18);
+
+ my $new_alias =
+ $shortened . '_' . substr($md5, 0, 30 - length($shortened) - 1);
+
+ return $new_alias;
+}
+
=head1 AUTHOR
See L<DBIx::Class/CONTRIBUTORS>.