X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=blobdiff_plain;f=lib%2FSQL%2FAbstract.pm;h=d8b7e96ae8e33b01c82bd7952bdf0cef65a8bd5f;hb=7a8e09eeec71ff0be4bd110804bf412d70d5687c;hp=53484e60394562bca8294b47615a5d7fdfe92968;hpb=0ac94f429b045223ab8f8c390ce76f7303267c89;p=scpubgit%2FQ-Branch.git

diff --git a/lib/SQL/Abstract.pm b/lib/SQL/Abstract.pm
index 53484e6..d8b7e96 100644
--- a/lib/SQL/Abstract.pm
+++ b/lib/SQL/Abstract.pm
@@ -139,29 +139,19 @@ sub is_plain_value ($) {
 
 our %Defaults = (
   expand => {
-    not => '_expand_not',
     bool => '_expand_bool',
-    and => '_expand_op_andor',
-    or => '_expand_op_andor',
-    nest => '_expand_nest',
-    bind => '_expand_bind',
-    in => '_expand_in',
-    not_in => '_expand_in',
     row => '_expand_row',
-    between => '_expand_between',
-    not_between => '_expand_between',
     op => '_expand_op',
-    (map +($_ => '_expand_op_is'), ('is', 'is_not')),
-    ident => '_expand_ident',
-    value => '_expand_value',
     func => '_expand_func',
     values => '_expand_values',
   },
   expand_op => {
-    'between' => '_expand_between',
-    'not_between' => '_expand_between',
-    'in' => '_expand_in',
-    'not_in' => '_expand_in',
+    (map +($_ => __PACKAGE__->make_binop_expander('_expand_between')),
+      qw(between not_between)),
+    #(map +($_ => __PACKAGE__->make_binop_expander('_expand_in')),
+    #  qw(in not_in)),
+    in => '_expand_in',
+    not_in => '_expand_in',
     'nest' => '_expand_nest',
     (map +($_ => '_expand_op_andor'), ('and', 'or')),
     (map +($_ => '_expand_op_is'), ('is', 'is_not')),
@@ -169,7 +159,8 @@ our %Defaults = (
     'value' => '_expand_value',
   },
   render => {
-    (map +($_, "_render_$_"), qw(op func bind ident literal row values)),
+    (map +($_, "_render_$_"),
+      qw(op func bind ident literal row values keyword)),
   },
   render_op => {
     (map +($_ => '_render_op_between'), 'between', 'not_between'),
@@ -185,6 +176,7 @@ our %Defaults = (
     delete => [ qw(target where returning) ],
     update => [ qw(target set where returning) ],
     insert => [ qw(target fields from returning) ],
+    select => [ qw(select from where order_by) ],
   },
   expand_clause => {
     'delete.from' => '_expand_delete_clause_target',
@@ -242,11 +234,6 @@ sub new {
   # special operators
   $opt{special_ops} ||= [];
 
-  if ($class->isa('DBIx::Class::SQLMaker')) {
-    $opt{warn_once_on_nest} = 1;
-    $opt{disable_old_special_ops} = 1;
-  }
-
   # unary operators
   $opt{unary_ops} ||= [];
 
@@ -270,14 +257,38 @@ sub new {
     $opt{$name} = { %{$Defaults{$name}}, %{$opt{$name}||{}} };
   }
 
-  foreach my $type (qw(insert update delete)) {
-    my $method = "_${type}_returning";
-    if ($class ne __PACKAGE__
-      and __PACKAGE__->can($method) ne $class->can($method)) {
-      my $clause = "${type}.returning";
-      $opt{expand_clause}{$clause} = sub { $_[2] },
-      $opt{render_clause}{$clause}
-        = sub { [ $_[0]->$method($_[3]) ] };
+  if ($class ne __PACKAGE__) {
+
+    # check for overriden methods
+
+    foreach my $type (qw(insert update delete)) {
+      my $method = "_${type}_returning";
+      if (__PACKAGE__->can($method) ne $class->can($method)) {
+        my $clause = "${type}.returning";
+        $opt{expand_clause}{$clause} = sub { $_[2] },
+        $opt{render_clause}{$clause}
+          = sub { [ $_[0]->$method($_[3]) ] };
+      }
+    }
+    if (__PACKAGE__->can('_table') ne $class->can('_table')) {
+      $opt{expand_clause}{'select.from'} = sub {
+        return +{ -literal => [ $_[0]->_table($_[2]) ] };
+      };
+    }
+    if (__PACKAGE__->can('_order_by') ne $class->can('_order_by')) {
+      $opt{expand_clause}{'select.order_by'} = sub { $_[2] };
+      $opt{render_clause}{'select.order_by'} = sub {
+        [ $_[0]->_order_by($_[2]) ];
+      };
+    }
+    if ($class->isa('DBIx::Class::SQLMaker')) {
+      $opt{warn_once_on_nest} = 1;
+      $opt{disable_old_special_ops} = 1;
+      $opt{render_clause}{'select.where'} = sub {
+        my ($sql, @bind) = $_[0]->where($_[2]);
+        s/\A\s+//, s/\s+\Z// for $sql;
+        return [ $sql, @bind ];
+      };
     }
   }
 
@@ -291,6 +302,102 @@ sub new {
   return bless \%opt, $class;
 }
 
+sub _ext_rw {
+  my ($self, $name, $key, $value) = @_;
+  return $self->{$name}{$key} unless @_ > 3;
+  $self->{$name}{$key} = $value;
+  return $self;
+}
+
+sub make_unop_expander {
+  my (undef, $exp) = @_;
+  sub {
+    my ($self, $name, $body, $k) = @_;
+    return $self->_expand_hashpair_cmp($k, { "-${name}" => $body })
+      if defined($k);
+    return $self->$exp($name, $body);
+  }
+}
+
+sub make_binop_expander {
+  my (undef, $exp) = @_;
+  sub {
+    my ($self, $name, $body, $k) = @_;
+    $k = shift @{$body = [ @$body ]} unless defined $k;
+    $k = ref($k) ? $k : { -ident => $k };
+    return $self->$exp($name, $body, $k);
+  }
+}
+
+BEGIN {
+  foreach my $type (qw(
+    expand op_expand render op_render clause_expand clause_render
+  )) {
+    my $name = join '_', reverse split '_', $type;
+    my $singular = "${type}er";
+    eval qq{sub ${singular} { shift->_ext_rw($name => \@_) }; 1 }
+      or die "Method builder failed for ${singular}: $@";
+    eval qq{sub wrap_${singular} {
+      my (\$self, \$key, \$builder) = \@_;
+      my \$orig = \$self->_ext_rw('${name}', \$key);
+      \$self->_ext_rw(
+        '${name}', \$key,
+        \$builder->(\$orig, '${name}', \$key)
+      );
+    }; 1 } or die "Method builder failed for wrap_${singular}: $@";
+    eval qq{sub ${singular}s {
+      my (\$self, \@args) = \@_;
+      while (my (\$this_key, \$this_value) = splice(\@args, 0, 2)) {
+        \$self->_ext_rw('${name}', \$this_key, \$this_value);
+      }
+      return \$self;
+    }; 1 } or die "Method builder failed for ${singular}s: $@";
+    eval qq{sub wrap_${singular}s {
+      my (\$self, \@args) = \@_;
+      while (my (\$this_key, \$this_builder) = splice(\@args, 0, 2)) {
+        my \$orig = \$self->_ext_rw('${name}', \$this_key);
+        \$self->_ext_rw(
+          '${name}', \$this_key,
+           \$this_builder->(\$orig, '${name}', \$this_key),
+        );
+      }
+      return \$self;
+    }; 1 } or die "Method builder failed for wrap_${singular}s: $@";
+    eval qq{sub ${singular}_list { sort keys %{\$_[0]->{\$name}} }; 1; }
+     or die "Method builder failed for ${singular}_list: $@";
+  }
+}
+
+sub register_op { $_[0]->{is_op}{$_[1]} = 1; $_[0] }
+
+sub statement_list { sort keys %{$_[0]->{clauses_of}} }
+
+sub clauses_of {
+  my ($self, $of, @clauses) = @_;
+  unless (@clauses) {
+    return @{$self->{clauses_of}{$of}||[]};
+  }
+  if (ref($clauses[0]) eq 'CODE') {
+    @clauses = $self->${\($clauses[0])}(@{$self->{clauses_of}{$of}||[]});
+  }
+  $self->{clauses_of}{$of} = \@clauses;
+  return $self;
+}
+
+sub clone {
+  my ($self) = @_;
+  bless(
+    {
+      (map +($_ => (
+        ref($self->{$_}) eq 'HASH'
+          ? { %{$self->{$_}} }
+          : $self->{$_}
+      )), keys %$self),
+    },
+    ref($self)
+  );
+}
+
 sub sqltrue { +{ -literal => [ $_[0]->{sqltrue} ] } }
 sub sqlfalse { +{ -literal => [ $_[0]->{sqlfalse} ] } }
 
@@ -324,12 +431,12 @@ sub insert {
 }
 
 sub _expand_insert_clause_target {
-  +(target => $_[0]->_expand_maybe_list_expr($_[2], -ident));
+  +(target => $_[0]->expand_maybe_list_expr($_[2], -ident));
 }
 
 sub _expand_insert_clause_fields {
   return +{ -row => [
-    $_[0]->_expand_maybe_list_expr($_[2], -ident)
+    $_[0]->expand_maybe_list_expr($_[2], -ident)
   ] } if ref($_[2]) eq 'ARRAY';
   return $_[2]; # should maybe still expand somewhat?
 }
@@ -339,7 +446,6 @@ sub _expand_insert_clause_from {
   if (ref($data) eq 'HASH' and (keys(%$data))[0] =~ /^-/) {
     return $self->expand_expr($data);
   }
-  return $data if ref($data) eq 'HASH' and $data->{-row};
   my ($f_aqt, $v_aqt) = $self->_expand_insert_values($data);
   return (
     from => { -values => [ $v_aqt ] },
@@ -348,7 +454,7 @@ sub _expand_insert_clause_from {
 }
 
 sub _expand_insert_clause_returning {
-  +(returning => $_[0]->_expand_maybe_list_expr($_[2], -ident));
+  +(returning => $_[0]->expand_maybe_list_expr($_[2], -ident));
 }
 
 sub _expand_insert_values {
@@ -387,7 +493,7 @@ sub _render_insert_clause_fields {
 
 sub _render_insert_clause_target {
   my ($self, undef, $from) = @_;
-  $self->join_query_parts(' ', $self->format_keyword('insert into'), $from);
+  $self->join_query_parts(' ', { -keyword => 'insert into' }, $from);
 }
 
 sub _render_insert_clause_from {
@@ -409,7 +515,7 @@ sub _returning {
   my $f = $options->{returning};
 
   my ($sql, @bind) = @{ $self->render_aqt(
-    $self->_expand_maybe_list_expr($f, -ident)
+    $self->expand_maybe_list_expr($f, -ident)
   ) };
   return ($self->_sqlcase(' returning ').$sql, @bind);
 }
@@ -466,7 +572,7 @@ sub update {
 
 sub _render_update_clause_target {
   my ($self, undef, $target) = @_;
-  $self->join_query_parts(' ', $self->format_keyword('update'), $target);
+  $self->join_query_parts(' ', { -keyword => 'update' }, $target);
 }
 
 sub _update_set_values {
@@ -479,7 +585,7 @@ sub _update_set_values {
 
 sub _expand_update_set_values {
   my ($self, undef, $data) = @_;
-  $self->_expand_maybe_list_expr( [
+  $self->expand_maybe_list_expr( [
     map {
       my ($k, $set) = @$_;
       $set = { -bind => $_ } unless defined $set;
@@ -503,7 +609,7 @@ sub _expand_update_set_values {
 
 sub _expand_update_clause_target {
   my ($self, undef, $target) = @_;
-  +(target => $self->_expand_maybe_list_expr($target, -ident));
+  +(target => $self->expand_maybe_list_expr($target, -ident));
 }
 
 sub _expand_update_clause_set {
@@ -516,7 +622,7 @@ sub _expand_update_clause_where {
 }
 
 sub _expand_update_clause_returning {
-  +(returning => $_[0]->_expand_maybe_list_expr($_[2], -ident));
+  +(returning => $_[0]->expand_maybe_list_expr($_[2], -ident));
 }
 
 # So that subclasses can override UPDATE ... RETURNING separately from
@@ -529,31 +635,90 @@ sub _update_returning { shift->_returning(@_) }
 # SELECT
 #======================================================================
 
-
 sub select {
-  my $self   = shift;
-  my $table  = $self->_table(shift);
-  my $fields = shift || '*';
-  my $where  = shift;
-  my $order  = shift;
+  my ($self, @args) = @_;
+  my $stmt = do {
+    if (ref(my $sel = $args[0]) eq 'HASH') {
+      $sel
+    } else {
+      my %clauses;
+      @clauses{qw(from select where order_by)} = @args;
+
+      # This oddity is to literalify since historically SQLA doesn't quote
+      # a single identifier argument, so we convert it into a literal
+
+      $clauses{select} = { -literal => [ $clauses{select}||'*' ] }
+        unless ref($clauses{select});
+      \%clauses;
+    }
+  };
 
-  my ($fields_sql, @bind) = $self->_select_fields($fields);
+  my @rendered = $self->render_statement({ -select => $stmt });
+  return wantarray ? @rendered : $rendered[0];
+}
 
-  my ($where_sql, @where_bind) = $self->where($where, $order);
-  push @bind, @where_bind;
+sub _expand_select_clause_select {
+  my ($self, undef, $select) = @_;
+  +(select => $self->expand_maybe_list_expr($select, -ident));
+}
 
-  my $sql = join(' ', $self->_sqlcase('select'), $fields_sql,
-                      $self->_sqlcase('from'),   $table)
-          . $where_sql;
+sub _expand_select_clause_from {
+  my ($self, undef, $from) = @_;
+  +(from => $self->expand_maybe_list_expr($from, -ident));
+}
+
+sub _expand_select_clause_where {
+  my ($self, undef, $where) = @_;
+
+  my $sqla = do {
+    if (my $conv = $self->{convert}) {
+      my $_wrap = sub {
+        my $orig = shift;
+        sub {
+          my $self = shift;
+          +{ -func => [
+            $conv,
+            $self->$orig(@_)
+          ] };
+        };
+      };
+      $self->clone
+           ->wrap_expander(bind => $_wrap)
+           ->wrap_op_expanders(map +($_ => $_wrap), qw(ident value))
+           ->wrap_expander(func => sub {
+               my $orig = shift;
+               sub {
+                 my ($self, $type, $thing) = @_;
+                 if (ref($thing) eq 'ARRAY' and $thing->[0] eq $conv
+                     and @$thing == 2 and ref($thing->[1]) eq 'HASH'
+                     and (
+                       $thing->[1]{-ident}
+                       or $thing->[1]{-value}
+                       or $thing->[1]{-bind})
+                     ) {
+                   return { -func => $thing }; # already went through our expander
+                 }
+                 return $self->$orig($type, $thing);
+               }
+             });
+    } else {
+      $self;
+    }
+  };
 
-  return wantarray ? ($sql, @bind) : $sql;
+  return +(where => $sqla->expand_expr($where));
+}
+
+sub _expand_select_clause_order_by {
+  my ($self, undef, $order_by) = @_;
+  +(order_by => $self->_expand_order_by($order_by));
 }
 
 sub _select_fields {
   my ($self, $fields) = @_;
   return $fields unless ref($fields);
   return @{ $self->render_aqt(
-    $self->_expand_maybe_list_expr($fields, '-ident')
+    $self->expand_maybe_list_expr($fields, '-ident')
   ) };
 }
 
@@ -581,18 +746,18 @@ sub delete {
 sub _delete_returning { shift->_returning(@_) }
 
 sub _expand_delete_clause_target {
-  +(target => $_[0]->_expand_maybe_list_expr($_[2], -ident));
+  +(target => $_[0]->expand_maybe_list_expr($_[2], -ident));
 }
 
 sub _expand_delete_clause_where { +(where => $_[0]->expand_expr($_[2])); }
 
 sub _expand_delete_clause_returning {
-  +(returning => $_[0]->_expand_maybe_list_expr($_[2], -ident));
+  +(returning => $_[0]->expand_maybe_list_expr($_[2], -ident));
 }
 
 sub _render_delete_clause_target {
    my ($self, undef, $from) = @_;
-   $self->join_query_parts(' ', $self->format_keyword('delete from'), $from);
+   $self->join_query_parts(' ', { -keyword => 'delete from' }, $from);
 }
 
 #======================================================================
@@ -695,7 +860,7 @@ sub _render_statement {
         my $r = $self->render_aqt($clause_expr, 1);
         next unless defined $r->[0] and length $r->[0];
         $self->join_query_parts(' ',
-          $self->format_keyword($clause),
+          { -keyword => $clause },
           $r
         );
       }
@@ -845,30 +1010,37 @@ sub _expand_hashpair_op {
 
   my $op = $self->_normalize_op($k);
 
-  { # Old SQLA compat
+  my $wsop = join(' ', split '_', $op);
 
-    my $op = join(' ', split '_', $op);
+  my $is_special = List::Util::first { $wsop =~ $_->{regex} }
+                     @{$self->{special_ops}};
+
+  { # Old SQLA compat
 
     # the old special op system requires illegality for top-level use
 
     if (
       (our $Expand_Depth) == 1
       and (
-        List::Util::first { $op =~ $_->{regex} } @{$self->{special_ops}}
+        $is_special
         or (
           $self->{disable_old_special_ops}
-          and List::Util::first { $op =~ $_->{regex} } @BUILTIN_SPECIAL_OPS
+          and List::Util::first { $wsop =~ $_->{regex} } @BUILTIN_SPECIAL_OPS
         )
       )
     ) {
-      puke "Illegal use of top-level '-$op'"
+      puke "Illegal use of top-level '-$wsop'"
     }
   }
 
-  if (my $exp = $self->{expand}{$op}) {
+  if (my $exp = $self->{expand}{$op}||$self->{expand_op}{$op}) {
     return $self->$exp($op, $v);
   }
 
+  if ($self->{render}{$op}) {
+    return { "-${op}" => $v };
+  }
+
   # Ops prefixed with -not_ get converted
 
   if (my ($rest) = $op =~/^not_(.*)$/) {
@@ -889,36 +1061,30 @@ sub _expand_hashpair_op {
     }
   }
 
-  # an explicit node type is currently assumed to be expanded (this is almost
-  # certainly wrong and there should be expansion anyway)
+  my $type = $is_special || $self->{render_op}{$op} ? -op : -func;
 
-  if ($self->{render}{$op}) {
-    return { $k => $v };
-  }
-
-  my $type = $self->{unknown_unop_always_func} ? -func : -op;
+  if ($self->{restore_old_unop_handling}) {
 
-  { # Old SQLA compat
+    # Old SQLA compat
 
     if (
       ref($v) eq 'HASH'
       and keys %$v == 1
       and (keys %$v)[0] =~ /^-/
+      and not $self->{render_op}{$op}
+      and not $is_special
     ) {
-      $type = (
-        (List::Util::first { $op =~ $_->{regex} } @{$self->{special_ops}})
-          ? -op
-          : -func
-      )
+      $type = -func;
+    } else {
+      $type = -op;
     }
   }
 
-  return +{ $type => [
-    $op,
-    ($type eq -func and ref($v) eq 'ARRAY')
-      ? map $self->_expand_expr($_), @$v
-      : $self->_expand_expr($v)
-  ] };
+  if ($type eq -func and ref($v) eq 'ARRAY') {
+    return $self->_expand_expr({ -func => [ $op, @$v ] });
+  }
+
+  return $self->_expand_expr({ $type => [ $op, $v ] });
 }
 
 sub _expand_hashpair_cmp {
@@ -1052,10 +1218,6 @@ sub _expand_value {
   +{ -bind => [ our $Cur_Col_Meta, $_[2] ] };
 }
 
-sub _expand_not {
-  +{ -op => [ 'not', $_[0]->_expand_expr($_[2]) ] };
-}
-
 sub _expand_row {
   my ($self, undef, $args) = @_;
   +{ -row => [ map $self->expand_expr($_), @$args ] };
@@ -1147,7 +1309,6 @@ sub _expand_op_is {
 
 sub _expand_between {
   my ($self, $op, $vv, $k) = @_;
-  $k = shift @{$vv = [ @$vv ]} unless defined $k;
   my @rhs = map $self->_expand_expr($_),
               ref($vv) eq 'ARRAY' ? @$vv : $vv;
   unless (
@@ -1159,8 +1320,8 @@ sub _expand_between {
   }
   return +{ -op => [
     $op,
-    $self->expand_expr(ref($k) ? $k : { -ident => $k }),
-    @rhs
+    $self->expand_expr($k),
+    map $self->expand_expr($_, -value), @rhs
   ] }
 }
 
@@ -1211,11 +1372,6 @@ sub _expand_nest {
   return $self->_expand_expr($v);
 }
 
-sub _expand_bind {
-  my ($self, undef, $bind) = @_;
-  return { -bind => $bind };
-}
-
 sub _expand_values {
   my ($self, undef, $values) = @_;
   return { -values => [
@@ -1228,12 +1384,12 @@ sub _expand_values {
 }
 
 sub _recurse_where {
-  my ($self, $where, $logic) = @_;
+  my ($self, $where) = @_;
 
   # Special case: top level simple string treated as literal
 
   my $where_exp = (ref($where)
-                    ? $self->_expand_expr($where, $logic)
+                    ? $self->_expand_select_clause_where(undef, $where)
                     : { -literal => [ $where ] });
 
   # dispatch expanded expression
@@ -1253,7 +1409,7 @@ sub _recurse_where {
 sub _render_ident {
   my ($self, undef, $ident) = @_;
 
-  return [ $self->_convert($self->_quote($ident)) ];
+  return [ $self->_quote($ident) ];
 }
 
 sub _render_row {
@@ -1280,7 +1436,7 @@ sub _render_func {
 
 sub _render_bind {
   my ($self, undef, $bind) = @_;
-  return [ $self->_convert('?'), $self->_bindtype(@$bind) ];
+  return [ '?', $self->_bindtype(@$bind) ];
 }
 
 sub _render_literal {
@@ -1289,6 +1445,13 @@ sub _render_literal {
   return $literal;
 }
 
+sub _render_keyword {
+  my ($self, undef, $keyword) = @_;
+  return [ $self->_sqlcase(
+    ref($keyword) ? $$keyword : join ' ', split '_', $keyword
+  ) ];
+}
+
 sub _render_op {
   my ($self, undef, $v) = @_;
   my ($op, @args) = @$v;
@@ -1333,11 +1496,11 @@ sub _render_op_between {
         unless $low->{-literal};
       $low;
     } else {
-      +($low, $self->format_keyword('and'), $high);
+      +($low, { -keyword => 'and' }, $high);
     }
   };
   return $self->join_query_parts(' ',
-    '(', $left, $self->format_keyword($op), @rh, ')',
+    '(', $left, { -keyword => $op }, @rh, ')',
   );
 }
 
@@ -1347,7 +1510,7 @@ sub _render_op_in {
 
   return $self->join_query_parts(' ',
     $lhs,
-    $self->format_keyword($op),
+    { -keyword => $op },
     $self->join_query_parts(' ',
       '(',
       $self->join_query_parts(', ', @rhs),
@@ -1374,7 +1537,7 @@ sub _render_op_multop {
   return $self->render_aqt($parts[0]) if @parts == 1;
   my $join = ($op eq ','
                 ? ', '
-                :  ' '.$self->format_keyword($op).' '
+                : { -keyword => " ${op} " }
              );
   return $self->join_query_parts($join, @parts);
 }
@@ -1382,7 +1545,7 @@ sub _render_op_multop {
 sub _render_values {
   my ($self, undef, $values) = @_;
   my $inner = $self->join_query_parts(' ',
-    $self->format_keyword('values'),
+    { -keyword => 'values' },
     $self->join_query_parts(', ',
       ref($values) eq 'ARRAY' ? @$values : $values
     ),
@@ -1394,13 +1557,18 @@ sub _render_values {
 
 sub join_query_parts {
   my ($self, $join, @parts) = @_;
+  if (ref($join) eq 'HASH') {
+    $join = $self->render_aqt($join)->[0];
+  }
   my @final = map +(
     ref($_) eq 'HASH'
       ? $self->render_aqt($_)
       : ((ref($_) eq 'ARRAY') ? $_ : [ $_ ])
   ), @parts;
   return [
-    $self->{join_sql_parts}->($join, grep defined, map $_->[0], @final),
+    $self->{join_sql_parts}->(
+      $join, grep defined && length, map $_->[0], @final
+    ),
     (map @{$_}[1..$#$_], @final),
   ];
 }
@@ -1414,15 +1582,21 @@ sub _render_unop_paren {
 
 sub _render_unop_prefix {
   my ($self, $op, $v) = @_;
+  my $op_sql = $self->{restore_old_unop_handling}
+                 ? $self->_sqlcase($op)
+                 : { -keyword => $op };
   return $self->join_query_parts(' ',
-    $self->_sqlcase($op), $v->[0]
+    ($self->{restore_old_unop_handling}
+      ? $self->_sqlcase($op)
+      : { -keyword => \$op }),
+    $v->[0]
   );
 }
 
 sub _render_unop_postfix {
   my ($self, $op, $v) = @_;
   return $self->join_query_parts(' ',
-    $v->[0], $self->format_keyword($op),
+    $v->[0], { -keyword => $op },
   );
 }
 
@@ -1466,7 +1640,7 @@ sub _expand_order_by {
 
   return unless defined($arg) and not (ref($arg) eq 'ARRAY' and !@$arg);
 
-  return $self->_expand_maybe_list_expr($arg)
+  return $self->expand_maybe_list_expr($arg)
     if ref($arg) eq 'HASH' and ($arg->{-op}||[''])->[0] eq ',';
 
   my $expander = sub {
@@ -1545,7 +1719,7 @@ sub _table  {
   my $self = shift;
   my $from = shift;
   $self->render_aqt(
-    $self->_expand_maybe_list_expr($from, -ident)
+    $self->expand_maybe_list_expr($from, -ident)
   )->[0];
 }
 
@@ -1554,7 +1728,7 @@ sub _table  {
 # UTILITY FUNCTIONS
 #======================================================================
 
-sub _expand_maybe_list_expr {
+sub expand_maybe_list_expr {
   my ($self, $expr, $default) = @_;
   return { -op => [
     ',', map $self->expand_expr($_, $default), 
@@ -1616,7 +1790,7 @@ sub _convert {
   #my ($self, $arg) = @_;
   if (my $conv = $_[0]->{convert_where}) {
     return @{ $_[0]->join_query_parts('',
-      $_[0]->format_keyword($conv),
+      $_[0]->_sqlcase($conv),
       '(' , $_[1] , ')'
     ) };
   }
@@ -1647,23 +1821,6 @@ sub _assert_bindval_matches_bindtype {
   }
 }
 
-sub _join_sql_clauses {
-  my ($self, $logic, $clauses_aref, $bind_aref) = @_;
-
-  if (@$clauses_aref > 1) {
-    my $join  = " " . $self->_sqlcase($logic) . " ";
-    my $sql = '( ' . join($join, @$clauses_aref) . ' )';
-    return ($sql, @$bind_aref);
-  }
-  elsif (@$clauses_aref) {
-    return ($clauses_aref->[0], @$bind_aref); # no parentheses
-  }
-  else {
-    return (); # if no SQL, ignore @$bind_aref
-  }
-}
-
-
 # Fix SQL case, if so requested
 sub _sqlcase {
   # LDNOTE: if $self->{case} is true, then it contains 'lower', so we
@@ -1671,8 +1828,6 @@ sub _sqlcase {
   return $_[0]->{case} ? $_[1] : uc($_[1]);
 }
 
-sub format_keyword { $_[0]->_sqlcase(join ' ', split '_', $_[1]) }
-
 #======================================================================
 # DISPATCHING FROM REFKIND
 #======================================================================