From: Matt S Trout <mst@shadowcat.co.uk>
Date: Sun, 22 Sep 2019 19:20:26 +0000 (+0000)
Subject: fixup SQL::Abstract::ExtraClauses to subclass SQLA, remove ::Clauses
X-Git-Url: http://git.shadowcat.co.uk/gitweb/gitweb.cgi?a=commitdiff_plain;h=a3040091c492c3fca3e8d22b4192572858f7ccf8;p=scpubgit%2FQ-Branch.git

fixup SQL::Abstract::ExtraClauses to subclass SQLA, remove ::Clauses
---

diff --git a/lib/SQL/Abstract/Clauses.pm b/lib/SQL/Abstract/Clauses.pm
deleted file mode 100644
index aae5782..0000000
--- a/lib/SQL/Abstract/Clauses.pm
+++ /dev/null
@@ -1,427 +0,0 @@
-package SQL::Abstract::Clauses;
-
-use strict;
-use warnings;
-use if $] < '5.010', 'MRO::Compat';
-use mro 'c3';
-use base 'SQL::Abstract';
-
-BEGIN { *puke = \&SQL::Abstract::puke }
-
-sub new {
-  shift->next::method(@_)->register_defaults
-}
-
-sub register_defaults {
-  my ($self) = @_;
-  $self->{clauses_of}{select} = [ qw(select from where order_by) ];
-  $self->{expand}{select} = sub { shift->_expand_statement(@_) };
-  $self->{render}{select} = sub { shift->_render_statement(@_) };
-  $self->{expand_clause}{"select.$_"} = "_expand_select_clause_$_"
-    for @{$self->{clauses_of}{select}};
-  $self->{clauses_of}{update} = [ qw(target set where returning) ];
-  $self->{expand}{update} = sub { shift->_expand_statement(@_) };
-  $self->{render}{update} = sub { shift->_render_statement(@_) };
-  $self->{expand_clause}{"update.$_"} = "_expand_update_clause_$_"
-    for @{$self->{clauses_of}{update}};
-  $self->{expand_clause}{'update.update'} = '_expand_update_clause_target';
-  $self->{render_clause}{'update.target'} = sub {
-    my ($self, undef, $target) = @_;
-    $self->join_query_parts(' ', $self->format_keyword('update'), $target);
-  };
-  $self->{clauses_of}{delete} = [ qw(target where returning) ];
-  $self->{expand}{delete} = sub { shift->_expand_statement(@_) };
-  $self->{render}{delete} = sub { shift->_render_statement(@_) };
-  $self->{expand_clause}{"delete.$_"} = "_expand_delete_clause_$_"
-    for @{$self->{clauses_of}{delete}};
-  $self->{expand_clause}{"delete.from"} = '_expand_delete_clause_target';
-  $self->{render_clause}{'delete.target'} = sub {
-    my ($self, undef, $from) = @_;
-    $self->join_query_parts(' ', $self->format_keyword('delete from'), $from);
-  };
-  $self->{clauses_of}{insert} = [
-    'target', 'fields', 'from', 'returning'
-  ];
-  $self->{expand}{insert} = sub { shift->_expand_statement(@_) };
-  $self->{render}{insert} = sub { shift->_render_statement(@_) };
-  $self->{expand_clause}{"insert.$_"} = "_expand_insert_clause_$_"
-    for @{$self->{clauses_of}{insert}};
-  $self->{expand_clause}{'insert.into'} = '_expand_insert_clause_target';
-  $self->{expand_clause}{'insert.values'} = '_expand_insert_clause_from';
-  $self->{render_clause}{'insert.fields'} = sub {
-    return $_[0]->render_aqt($_[2]);
-  };
-  $self->{render_clause}{'insert.target'} = sub {
-    my ($self, undef, $from) = @_;
-    $self->join_query_parts(' ', $self->format_keyword('insert into'), $from);
-  };
-  $self->{render_clause}{'insert.from'} = sub {
-    return $_[0]->render_aqt($_[2], 1);
-  };
-  $self->{expand}{values} = '_expand_values';
-  $self->{render}{values} = '_render_values';
-  $self->{expand}{exists} = sub {
-    $_[0]->_expand_op(undef, [ exists => $_[2] ]);
-  };
-
-  # check for overriden methods
-  if ($self->can('_table') ne SQL::Abstract->can('_table')) {
-    $self->{expand_clause}{'select.from'} = sub {
-      return +{ -literal => [ $_[0]->_table($_[2]) ] };
-    };
-  }
-  if ($self->can('_order_by') ne SQL::Abstract->can('_order_by')) {
-    $self->{expand_clause}{'select.order_by'} = sub {
-      my ($osql, @obind) = $_[0]->_order_by($_[2]);
-      $osql =~ s/^order by //i;
-      return undef unless length($osql);
-      return +{ -literal => [ $osql, @obind ] };
-    };
-  }
-  return $self;
-}
-
-sub _expand_select_clause_select {
-  my ($self, undef, $select) = @_;
-  +(select => $self->_expand_maybe_list_expr($select, -ident));
-}
-
-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(@_)
-          ] };
-        };
-      };
-      $self->clone
-           ->wrap_expanders(map +($_ => $_wrap), qw(ident value bind))
-           ->wrap_op_expanders(map +($_ => $_wrap), qw(ident value bind))
-           ->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 +(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 _expand_update_clause_target {
-  my ($self, undef, $target) = @_;
-  +(target => $self->_expand_maybe_list_expr($target, -ident));
-}
-
-sub _expand_update_clause_set {
-  return $_[2] if ref($_[2]) eq 'HASH' and ($_[2]->{-op}||[''])->[0] eq ',';
-  +(set => $_[0]->_expand_update_set_values($_[1], $_[2]));
-}
-
-sub _expand_update_clause_where {
-  +(where => $_[0]->expand_expr($_[2]));
-}
-
-sub _expand_update_clause_returning {
-  +(returning => $_[0]->_expand_maybe_list_expr($_[2], -ident));
-}
-
-sub _expand_delete_clause_target {
-  +(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));
-}
-
-sub _expand_statement {
-  my ($self, $type, $args) = @_;
-  my $ec = $self->{expand_clause};
-  if ($args->{_}) {
-    $args = { %$args };
-    $args->{$type} = delete $args->{_}
-  }
-  return +{ "-${type}" => +{
-    map {
-      my $val = $args->{$_};
-      if (defined($val) and my $exp = $ec->{"${type}.$_"}) {
-        if ((my (@exp) = $self->$exp($_ => $val)) == 1) {
-          ($_ => $exp[0])
-        } else {
-          @exp
-        }
-      } else {
-        ($_ => $self->expand_expr($val))
-      }
-    } sort keys %$args
-  } };
-}
-
-sub _render_statement {
-  my ($self, $type, $args) = @_;
-  my @parts;
-  foreach my $clause (@{$self->{clauses_of}{$type}}) {
-    next unless my $clause_expr = $args->{$clause};
-    my $part = do {
-      if (my $rdr = $self->{render_clause}{"${type}.${clause}"}) {
-        $self->$rdr($clause, $clause_expr);
-      } else {
-        $self->join_query_parts(' ',
-          $self->format_keyword($clause),
-          $self->render_aqt($clause_expr, 1)
-        );
-      }
-    };
-    push @parts, $part;
-  }
-  my $q = $self->join_query_parts(' ', @parts);
-  return $self->join_query_parts('',
-    (our $Render_Top_Level ? $q : ('(', $q, ')'))
-  );
-}
-
-sub render_aqt {
-  my ($self, $aqt, $top_level) = @_;
-  local our $Render_Top_Level = $top_level;
-  return $self->next::method($aqt);
-}
-
-sub render_statement {
-  my ($self, $expr, $default_scalar_to) = @_;
-  @{$self->render_aqt(
-    $self->expand_expr($expr, $default_scalar_to), 1
-  )};
-}
-
-sub select {
-  my ($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 @rendered = $self->render_statement({ -select => $stmt });
-  return wantarray ? @rendered : $rendered[0];
-}
-
-sub update {
-  my ($self, $table, $set, $where, $options) = @_;
-
-  my $stmt = do {
-    if (ref($table) eq 'HASH') {
-      $table
-    } else {
-      my %clauses;
-      @clauses{qw(target set where)} = ($table, $set, $where);
-      puke "Unsupported data type specified to \$sql->update"
-        unless ref($clauses{set}) eq 'HASH';
-      @clauses{keys %$options} = values %$options;
-      \%clauses;
-    }
-  };
-  my @rendered = $self->render_statement({ -update => $stmt });
-  return wantarray ? @rendered : $rendered[0];
-}
-
-sub delete {
-  my ($self, $table, $where, $options) = @_;
-
-  my $stmt = do {
-    if (ref($table) eq 'HASH') {
-      $table;
-    } else {
-      my %clauses = (target => $table, where => $where, %{$options||{}});
-      \%clauses;
-    }
-  };
-  my @rendered = $self->render_statement({ -delete => $stmt });
-  return wantarray ? @rendered : $rendered[0];
-}
-
-sub insert {
-  my ($self, $table, $data, $options) = @_;
-
-  my $stmt = do {
-    if (ref($table) eq 'HASH') {
-      $table;
-    } else {
-      my %clauses = (target => $table, values => $data, %{$options||{}});
-      \%clauses;
-    }
-  };
-  my @rendered = $self->render_statement({ -insert => $stmt });
-  return wantarray ? @rendered : $rendered[0];
-}
-
-sub _expand_insert_clause_target {
-  +(target => $_[0]->_expand_maybe_list_expr($_[2], -ident));
-}
-
-sub _expand_insert_clause_fields {
-  return +{ -row => [
-    $_[0]->_expand_maybe_list_expr($_[2], -ident)
-  ] } if ref($_[2]) eq 'ARRAY';
-  return $_[2]; # should maybe still expand somewhat?
-}
-
-sub _expand_insert_clause_from {
-  my ($self, undef, $data) = @_;
-  if (ref($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 => [ $v_aqt ] },
-    ($f_aqt ? (fields => $f_aqt) : ()),
-  );
-}
-
-sub _expand_insert_clause_returning {
-  +(returning => $_[0]->_expand_maybe_list_expr($_[2], -ident));
-}
-
-sub _expand_values {
-  my ($self, undef, $values) = @_;
-  return { -values => [
-    map +(
-      ref($_) eq 'HASH'
-        ? $self->expand_expr($_)
-        : +{ -row => [ map $self->expand_expr($_), @$_ ] }
-    ), ref($values) eq 'ARRAY' ? @$values : $values
-  ] };
-}
-
-sub _render_values {
-  my ($self, undef, $values) = @_;
-  my $inner = $self->join_query_parts(' ',
-    $self->format_keyword('values'),
-    $self->join_query_parts(', ',
-      ref($values) eq 'ARRAY' ? @$values : $values
-    ),
-  );
-  return $self->join_query_parts('',
-    (our $Render_Top_Level ? $inner : ('(', $inner, ')'))
-  );
-}
-
-sub _ext_rw {
-  my ($self, $name, $key, $value) = @_;
-  return $self->{$name}{$key} unless @_ > 3;
-  $self->{$name}{$key} = $value;
-  return $self;
-}
-
-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)
-  );
-}
-
-1;
diff --git a/lib/SQL/Abstract/ExtraClauses.pm b/lib/SQL/Abstract/ExtraClauses.pm
index c9b332a..73e7073 100644
--- a/lib/SQL/Abstract/ExtraClauses.pm
+++ b/lib/SQL/Abstract/ExtraClauses.pm
@@ -4,13 +4,12 @@ use strict;
 use warnings;
 use if $] < '5.010', 'MRO::Compat';
 use mro 'c3';
-use base qw(SQL::Abstract::Clauses);
+use base qw(SQL::Abstract);
 
 BEGIN { *puke = \&SQL::Abstract::puke }
 
-sub register_defaults {
-  my $self = shift;
-  $self->next::method(@_);
+sub new {
+  my $self = shift->next::method(@_);
   my @clauses = $self->clauses_of('select');
   my @before_setop;
   CLAUSE: foreach my $idx (0..$#clauses) {