1 package # Hide from PAUSE
2 DBIx::Class::SQLAHacks::Oracle;
7 use base qw( DBIx::Class::SQLAHacks );
8 use Carp::Clan qw/^DBIx::Class|^SQL::Abstract/;
12 # - Review by experienced DBIC/SQL:A developers :-)
13 # - Problem with count and connect_by look the TODO in t/73oracle.t
18 my %opts = (ref $_[0] eq 'HASH') ? %{$_[0]} : @_;
19 push @{$opts{special_ops}}, {
20 regex => qr/^prior$/i,
21 handler => '_where_field_PRIOR',
24 $self->SUPER::new (\%opts);
28 my ($self, $table, $fields, $where, $rs_attrs, @rest) = @_;
30 my $sql = $self->SUPER::select($table, $fields, $where, $rs_attrs, @rest);
32 return wantarray ? ($sql, @{$self->{from_bind}}, @{$self->{where_bind}}, @{$self->{_oracle_connect_by_binds}}, @{$self->{having_bind}}, @{$self->{order_bind}} ) : $sql;
36 my ( $self, $syntax, $sql, $rs_attrs, $rows, $offset ) = @_;
38 my ($cb_sql, @cb_bind) = $self->_connect_by($rs_attrs);
40 $self->{_oracle_connect_by_binds} = \@cb_bind;
42 return $self->SUPER::_emulate_limit($syntax, $sql, $rs_attrs, $rows, $offset);
46 my ($self, $attrs) = @_;
51 if ( ref($attrs) eq 'HASH' ) {
52 if ( $attrs->{'start_with'} ) {
53 my ($ws, @wb) = $self->_recurse_where( $attrs->{'start_with'} );
54 $sql .= $self->_sqlcase(' start with ') . $ws;
57 if ( my $connect_by = $attrs->{'connect_by'} || $attrs->{'connect_by_nocycle'} ) {
58 my ($connect_by_sql, @connect_by_sql_bind) = $self->_recurse_where( $connect_by );
59 $sql .= sprintf(" %s %s",
60 ( $attrs->{'connect_by_nocycle'} ) ? $self->_sqlcase('connect by nocycle')
61 : $self->_sqlcase('connect by'),
64 push @bind, @connect_by_sql_bind;
66 if ( $attrs->{'order_siblings_by'} ) {
67 $sql .= $self->_order_siblings_by( $attrs->{'order_siblings_by'} );
71 return wantarray ? ($sql, @bind) : $sql;
74 sub _order_siblings_by {
75 my ( $self, $arg ) = @_;
78 for my $c ( $self->_order_by_chunks($arg) ) {
79 $self->_SWITCH_refkind(
82 SCALAR => sub { push @sql, $c },
83 ARRAYREF => sub { push @sql, shift @$c; push @bind, @$c },
90 ? sprintf( '%s %s', $self->_sqlcase(' order siblings by'), join( ', ', @sql ) )
93 return wantarray ? ( $sql, @bind ) : $sql;
96 # we need to add a '=' only when PRIOR is used against a column diretly
97 # i.e. when it is invoked by a special_op callback
98 sub _where_field_PRIOR {
99 my ($self, $lhs, $op, $rhs) = @_;
100 my ($sql, @bind) = $self->_recurse_where ($rhs);
102 $sql = sprintf ('%s = %s %s ',
103 $self->_convert($self->_quote($lhs)),
104 $self->_sqlcase ($op),
108 return ($sql, @bind);
119 DBIx::Class::SQLAHacks::Oracle - adds hierarchical query support for Oracle to SQL::Abstract
123 See L<DBIx::Class::Storage::DBI::Oracle::Generic> for more informations about
124 how to use hierarchical queries with DBIx::Class.