X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSQL%2FAbstract%2FExtraClauses.pm;h=98789417de17ae61588a8151c1c7d3cb02412814;hb=5e4aaea347e2546a471f855f994106b5f345c6d6;hp=ad49758933b6f7bf576f37594ab09af601862c4d;hpb=fe8b493f5d24be683bf3e3ddf2fb933ae8d193e6;p=scpubgit%2FQ-Branch.git

diff --git a/lib/SQL/Abstract/ExtraClauses.pm b/lib/SQL/Abstract/ExtraClauses.pm
index ad49758..9878941 100644
--- a/lib/SQL/Abstract/ExtraClauses.pm
+++ b/lib/SQL/Abstract/ExtraClauses.pm
@@ -62,9 +62,9 @@ sub register_defaults {
   );
 
   # set ops
-  {
-    my $orig = $self->expander('select');
-    $self->expander(select => sub {
+  $self->wrap_expander(select => sub {
+    my $orig = shift;
+    sub {
       my $self = shift;
       my $exp = $self->$orig(@_);
       return $exp unless my $setop = (my $sel = $exp->{-select})->{setop};
@@ -74,8 +74,8 @@ sub register_defaults {
           { -select => \%inner };
       }
       return $exp;
-    });
-  }
+    }
+  });
   my $expand_setop = sub {
     my ($self, $setop, $args) = @_;
     +{ "-${setop}" => {
@@ -92,32 +92,33 @@ sub register_defaults {
 
   $self->renderer($_ => sub {
     my ($self, $setop, $args) = @_;
-    $self->join_clauses(
+    $self->join_query_parts(
       ' '.$self->format_keyword(join '_', $setop, ($args->{type}||())).' ',
       map [ $self->render_aqt($_) ], @{$args->{queries}}
     );
   }) for qw(union intersect except);
 
-  foreach my $setop (qw(union intersect except)) {
+  my $setop_expander = sub {
+    my ($self, $setop, $args) = @_;
+    my ($op, $type) = split '_', $setop;
+    +(setop => $self->expand_expr({
+      "-${op}" => {
+        ($type ? (type => $type) : ()),
+        queries => (ref($args) eq 'ARRAY' ? $args : [ $args ])
+      }
+    }));
+  };
+
+  $self->clause_expanders(
+    map +($_ => $setop_expander),
+      map "select.${_}",
+        map +($_, "${_}_all", "${_}_distinct"),
+          qw(union intersect except)
+  );
 
-    $self->clause_expander("select.${setop}" => sub {
-      +(setop => $_[0]->expand_expr({
-                   "-${setop}" => {
-                     queries => (ref($_[2]) eq 'ARRAY' ? $_[2] : [ $_[2] ]),
-                   }
-                 }));
-    });
-    $self->clause_expander("select.${setop}_all" => sub {
-      +(setop => $_[0]->expand_expr({
-                   "-${setop}" => {
-                     type => 'all',
-                     queries => (ref($_[2]) eq 'ARRAY' ? $_[2] : [ $_[2] ]),
-                   }
-                 }));
-    });
-  }
   $self->clause_expander('select.with' => my $with_expander = sub {
-    my ($self, undef, $with) = @_;
+    my ($self, $name, $with) = @_;
+    my (undef, $type) = split '_', $name;
     if (ref($with) eq 'HASH') {
       return +{
         %$with,
@@ -134,29 +135,22 @@ sub register_defaults {
         $self->expand_expr($query)
       ];
     }
-    return +{ queries => \@exp };
-  });
-  $self->clause_expander('select.with_recursive' => sub {
-    my ($self, undef, $with) = @_;
-    my $exp = $self->$with_expander(undef, $with);
-    return +(with => +{
-      %$exp,
-      type => 'recursive'
-    });
+    return +(with => { ($type ? (type => $type) : ()), queries => \@exp });
   });
+  $self->clause_expander('select.with_recursive', $with_expander);
   $self->clause_renderer('select.with' => sub {
     my ($self, undef, $with) = @_;
-    my $q_part = [ $self->join_clauses(', ',
+    my $q_part = [ $self->join_query_parts(', ',
       map {
         my ($alias, $query) = @$_;
-        [ $self->join_clauses(' ',
+        [ $self->join_query_parts(' ',
             [ $self->_render_alias($alias) ],
             [ $self->format_keyword('as') ],
             [ $self->render_aqt($query) ],
         ) ]
       } @{$with->{queries}}
     ) ];
-    return $self->join_clauses(' ',
+    return $self->join_query_parts(' ',
       [ $self->format_keyword(join '_', 'with', ($with->{type}||'')) ],
       $q_part,
     );
@@ -221,7 +215,7 @@ sub _expand_join {
 
 sub _render_from_list {
   my ($self, undef, $list) = @_;
-  return $self->join_clauses(', ', map [ $self->render_aqt($_) ], @$list);
+  return $self->join_query_parts(', ', map [ $self->render_aqt($_) ], @$list);
 }
 
 sub _render_join {
@@ -242,7 +236,7 @@ sub _render_join {
       [ $self->render_aqt($args->{using}) ],
     ) : ()),
   );
-  return $self->join_clauses(' ', @parts);
+  return $self->join_query_parts(' ', @parts);
 }
 
 sub _expand_op_as {
@@ -255,7 +249,7 @@ sub _expand_op_as {
 sub _render_as {
   my ($self, undef, $args) = @_;
   my ($thing, @alias) = @$args;
-  return $self->join_clauses(
+  return $self->join_query_parts(
     ' ',
     [ $self->render_aqt($thing) ],
     [ $self->format_keyword('as') ],
@@ -267,10 +261,10 @@ sub _render_alias {
   my ($self, $args) = @_;
   my ($as, @cols) = @$args;
   return (@cols
-    ? $self->join_clauses('',
+    ? $self->join_query_parts('',
          [ $self->render_aqt($as) ],
          [ '(' ],
-         [ $self->join_clauses(
+         [ $self->join_query_parts(
              ', ',
              map [ $self->render_aqt($_) ], @cols
          ) ],