initial commit, attempting to get test deploy working

[dbsrgits/DBIx-Class.git] / lib / DBIx / Class / SQLMaker / Pg.pm

diff --git a/lib/DBIx/Class/SQLMaker/Pg.pm b/lib/DBIx/Class/SQLMaker/Pg.pm
new file mode 100644 (file)
index 0000000..2431c6a
--- /dev/null
+++ b/lib/DBIx/Class/SQLMaker/Pg.pm
@@ -0,0 +1,70 @@
+package
+  DBIx::Class::SQLMaker::Pg;
+
+use strict;
+use warnings;
+use base qw( DBIx::Class::SQLMaker );
+
+sub new {
+  my $self = shift;
+  my %opts = (ref $_[0] eq 'HASH') ? %{$_[0]} : @_;
+
+  $self->next::method(\%opts);
+}
+
+sub _assemble_binds {
+  my $self = shift;
+   return map { @{ (delete $self->{"${_}_bind"}) || [] } }
+   (qw/select from where with_recursive group having order limit/);
+}
+
+sub _parse_rs_attrs {
+  my $self = shift;
+  my ($rs_attrs) = @_;
+
+  my ($cb_sql, @cb_bind) = $self->_with_recursive($rs_attrs);
+  push @{$self->{with_recursive_bind}}, @cb_bind;
+
+  my $sql = $self->next::method(@_);
+
+  return "$cb_sql $sql";
+}
+
+# with_recursive =>{
+#   -columns => [ ... ],
+#   -nrt     => $blargh->search....
+#   -rt      => $blargh->search...
+#   -union_all 1|0
+sub _with_recursive {
+  my ($self, $attrs) = @_;
+
+  my $sql = '';
+  my @bind;
+
+  if ( ref($attrs) eq 'HASH' ) {
+    if ( $attrs->{'with_recursive'} ) {
+      my $with_recursive = $attrs->{'with_recursive'};
+      my @fields = @{$with_recursive->{'-columns'}};
+      my $nrt    = $with_recursive->{'-nrt'};
+      my $rt     = $with_recursive->{'-rt'};
+      my $union  = $with_recursive->{'-union_all'};
+#      my ($wr, @wb) = $self->_recurse_where( $attrs->{'with_recursive'} );
+      my ($with_nrt_sql, @with_nrt_bind) = $nrt->as_query;
+      my ($with_rt_sql, @with_rt_bind)   = $rt->as_query;
+      push @bind, @with_nrt_bind;
+      push @bind, @with_rt_bind;
+      $sql .= $self->_sqlcase(' with recursive ') . ' temp_wr_query ' . '(' .
+              join(', ', @fields) . ') ' . $self->_sqlcase('as') . ' ( ';
+      $sql .= $with_nrt_sql;
+      $sql .= $self->_sqlcase(' union all ');
+      $sql .= $with_rt_sql;
+      $sql .= ' ) ';
+
+      return ($sql, @bind);
+    }
+  }
+
+  return wantarray ? ($sql, @bind) : $sql;
+
+}
+1;