adding deprecation warning for where_clauses

History.txt

@@ -31,6 +31,9 @@
   * Arel::Table#primary_key is deprecated and will be removed in 3.0.0 with no
   replacement.
 
+  * Arel::SelectManager#where_clauses is deprecated and will be removed in
+  3.0.0 with no replacement.
+
 == 2.0.7 (unreleased)
 
 * Bug Fixes

lib/arel/factory_methods.rb

@@ -17,5 +17,9 @@ module Arel
     def create_on expr
       Nodes::On.new expr
     end
+
+    def grouping expr
+      Nodes::Grouping.new expr
+    end
   end
 end

lib/arel/select_manager.rb

@@ -30,7 +30,9 @@ module Arel
     end
 
     def where_clauses
-      #warn "where_clauses is deprecated" if $VERBOSE
+      if $VERBOSE
+      warn "(#{caller.first}) where_clauses is deprecated and will be removed in arel 3.0.0 with no replacement"
+      end
       to_sql = Visitors::ToSql.new @engine
       @ctx.wheres.map { |c| to_sql.accept c }
     end