more pod for new methods

[scpubgit/Q-Branch.git] / lib / SQL / Abstract.pm

diff --git a/lib/SQL/Abstract.pm b/lib/SQL/Abstract.pm
index 4f136d6..95867df 100644 (file)
--- a/lib/SQL/Abstract.pm
+++ b/lib/SQL/Abstract.pm
@@ -8,7 +8,7 @@ use List::Util ();
 use Scalar::Util ();
 
 use Exporter 'import';
-our @EXPORT_OK = qw(is_plain_value is_literal_value);
+our @EXPORT_OK = qw(is_plain_value is_literal_value is_undef_value);
 
 BEGIN {
   if ($] < 5.009_005) {
@@ -367,7 +367,7 @@ BEGIN {
       my (\$self, \@args) = \@_;
       while (my (\$this_key, \$this_value) = splice(\@args, 0, 2)) {
         \$self->_ext_rw(
-           op => \$this_key,
+           expand_op => \$this_key,
            \$self->make_${singular}(\$this_value),
         );
       }
@@ -2650,6 +2650,10 @@ module:
 On failure returns C<undef>, on success returns an B<array> reference
 containing the unpacked version of the supplied literal SQL and bind values.
 
+=head2 is_undef_value
+
+Tests for undef, whether expanded or not.
+
 =head1 WHERE CLAUSES
 
 =head2 Introduction
@@ -3446,11 +3450,103 @@ When supplied with a coderef, it is called as:
 
 =head1 NEW EXTENSION SYSTEM
 
+See L<SQL::Abstract::Reference> for concepts.
+
 =head2 expander
 
+=head2 expanders
+
 =head2 op_expander
 
-=head2 
+=head2 op_expanders
+
+=head2 clause_expander
+
+=head2 clause_expanders
+
+  $sqla->expander('name' => sub { ... });
+  $sqla->expanders('name1' => sub { ... }, 'name2' => sub { ... });
+
+=head2 expander_list
+
+=head2 op_expander_list
+
+=head2 clause_expander_list
+
+  my @names = $sqla->expander_list;
+
+=head2 wrap_expander
+
+=head2 wrap_expanders
+
+=head2 wrap_op_expander
+
+=head2 wrap_op_expanders
+
+=head2 wrap_clause_expander
+
+=head2 wrap_clause_expanders
+
+  $sqla->wrap_expander('name' => sub { my ($orig) = @_; sub { ... } });
+  $sqla->wrap_expanders(
+    'name1' => sub { my ($orig1) = @_; sub { ... } },
+    'name2' => sub { my ($orig2) = @_; sub { ... } },
+  );
+
+=head2 renderer
+
+=head2 renderers
+
+=head2 op_renderer
+
+=head2 op_renderers
+
+=head2 clause_renderer
+
+=head2 clause_renderers
+
+  $sqla->renderer('name' => sub { ... });
+  $sqla->renderers('name1' => sub { ... }, 'name2' => sub { ... });
+
+=head2 renderer_list
+
+=head2 op_renderer_list
+
+=head2 clause_renderer_list
+
+  my @names = $sqla->renderer_list;
+
+=head2 wrap_renderer
+
+=head2 wrap_renderers
+
+=head2 wrap_op_renderer
+
+=head2 wrap_op_renderers
+
+=head2 wrap_clause_renderer
+
+=head2 wrap_clause_renderers
+
+  $sqla->wrap_renderer('name' => sub { my ($orig) = @_; sub { ... } });
+  $sqla->wrap_renderers(
+    'name1' => sub { my ($orig1) = @_; sub { ... } },
+    'name2' => sub { my ($orig2) = @_; sub { ... } },
+  );
+
+=head2 clauses_of
+
+  my @clauses = $sqla->clauses_of('select');
+  $sqla->clauses_of(select => \@new_clauses);
+  $sqla->clauses_of(select => sub {
+    my (undef, @old_clauses) = @_;
+    ...
+    return @new_clauses;
+  });
+
+=head2 statement_list
+
+  my @list = $sqla->statement_list;
 
 =head1 PERFORMANCE