package # Hide from PAUSE
DBIx::Class::SQLAHacks::Oracle;
+use warnings;
+use strict;
+
use base qw( DBIx::Class::SQLAHacks );
use Carp::Clan qw/^DBIx::Class|^SQL::Abstract/;
-#
-# TODO:
-# - Check the parameter syntax of connect_by
-# - Review by experienced DBIC/SQL:A developers :-)
-# - Check NOCYCLE parameter
-# http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/pseudocolumns001.htm#i1009434
-#
+sub new {
+ my $self = shift;
+ my %opts = (ref $_[0] eq 'HASH') ? %{$_[0]} : @_;
+ push @{$opts{special_ops}}, {
+ regex => qr/^prior$/i,
+ handler => '_where_field_PRIOR',
+ };
-sub select {
- my ($self, $table, $fields, $where, $order, @rest) = @_;
+ $self->SUPER::new (\%opts);
+}
- $self->{_db_specific_attrs} = pop @rest;
+sub _assemble_binds {
+ my $self = shift;
+ return map { @{ (delete $self->{"${_}_bind"}) || [] } } (qw/from where oracle_connect_by having order/);
+}
- my ($sql, @bind) = $self->SUPER::select($table, $fields, $where, $order, @rest);
- push @bind, @{$self->{_oracle_connect_by_binds}};
- return wantarray ? ($sql, @bind) : $sql;
-}
+sub _parse_rs_attrs {
+ my $self = shift;
+ my ($rs_attrs) = @_;
-sub _emulate_limit {
- my ( $self, $syntax, $sql, $order, $rows, $offset ) = @_;
+ my ($cb_sql, @cb_bind) = $self->_connect_by($rs_attrs);
+ push @{$self->{oracle_connect_by_bind}}, @cb_bind;
- my ($cb_sql, @cb_bind) = $self->_connect_by();
- $sql .= $cb_sql;
- $self->{_oracle_connect_by_binds} = \@cb_bind;
+ my $sql = $self->SUPER::_parse_rs_attrs(@_);
- return $self->SUPER::_emulate_limit($syntax, $sql, $order, $rows, $offset);
+ return "$cb_sql $sql";
}
sub _connect_by {
- my ($self) = @_;
- my $attrs = $self->{_db_specific_attrs};
+ my ($self, $attrs) = @_;
+
my $sql = '';
my @bind;
$sql .= $self->_sqlcase(' start with ') . $ws;
push @bind, @wb;
}
- if ( my $connect_by = $attrs->{'connect_by'}) {
- my ($connect_by_sql, @connect_by_sql_bind) = $self->_recurse_where( $attrs->{'connect_by'} );
+ if ( my $connect_by = $attrs->{'connect_by'} || $attrs->{'connect_by_nocycle'} ) {
+ my ($connect_by_sql, @connect_by_sql_bind) = $self->_recurse_where( $connect_by );
$sql .= sprintf(" %s %s",
- $self->_sqlcase('connect by'),
+ ( $attrs->{'connect_by_nocycle'} ) ? $self->_sqlcase('connect by nocycle')
+ : $self->_sqlcase('connect by'),
$connect_by_sql,
);
push @bind, @connect_by_sql_bind;
- # $sql .= $self->_sqlcase(' connect by');
- # foreach my $key ( keys %$connect_by ) {
- # $sql .= " $key = " . $connect_by->{$key};
- # }
}
if ( $attrs->{'order_siblings_by'} ) {
$sql .= $self->_order_siblings_by( $attrs->{'order_siblings_by'} );
}
sub _order_siblings_by {
- my $self = shift;
- my $ref = ref $_[0];
+ my ( $self, $arg ) = @_;
+
+ my ( @sql, @bind );
+ for my $c ( $self->_order_by_chunks($arg) ) {
+ $self->_SWITCH_refkind(
+ $c,
+ {
+ SCALAR => sub { push @sql, $c },
+ ARRAYREF => sub { push @sql, shift @$c; push @bind, @$c },
+ }
+ );
+ }
+
+ my $sql =
+ @sql
+ ? sprintf( '%s %s', $self->_sqlcase(' order siblings by'), join( ', ', @sql ) )
+ : '';
+
+ return wantarray ? ( $sql, @bind ) : $sql;
+}
+
+# we need to add a '=' only when PRIOR is used against a column diretly
+# i.e. when it is invoked by a special_op callback
+sub _where_field_PRIOR {
+ my ($self, $lhs, $op, $rhs) = @_;
+ my ($sql, @bind) = $self->_recurse_where ($rhs);
- my @vals = $ref eq 'ARRAY' ? @{$_[0]} :
- $ref eq 'SCALAR' ? ${$_[0]} :
- $ref eq '' ? $_[0] :
- puke( "Unsupported data struct $ref for ORDER SIBILINGS BY" );
+ $sql = sprintf ('%s = %s %s ',
+ $self->_convert($self->_quote($lhs)),
+ $self->_sqlcase ($op),
+ $sql
+ );
- my $val = join ', ', map { $self->_quote($_) } @vals;
- return $val ? $self->_sqlcase(' order siblings by')." $val" : '';
+ return ($sql, @bind);
}
1;