From 964526193bc56c68deba87745b71ed43e29317ae Mon Sep 17 00:00:00 2001
From: Matt Aimonetti <mattaimonetti@gmail.com>
Date: Thu, 16 Jul 2009 20:38:15 -0700
Subject: [PATCH] Optimized Model.count to run about 3x faster

---
 history.txt                              | 3 ++-
 lib/couchrest/mixins/design_doc.rb       | 3 ---
 lib/couchrest/mixins/document_queries.rb | 4 +---
 3 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/history.txt b/history.txt
index 0035981..b434056 100644
--- a/history.txt
+++ b/history.txt
@@ -5,7 +5,8 @@
   * Created an abstraction HTTP layer to support different http adapters (Matt Aimonetti)
   
 * Minor enhancements
-
+  
+  * Optimized Model.count to run about 3x faster (Matt Aimonetti)
   * Added Float casting (Ryan Felton & Matt Aimonetti)
 
 == 0.30
diff --git a/lib/couchrest/mixins/design_doc.rb b/lib/couchrest/mixins/design_doc.rb
index 4ed6fdf..661b6ef 100644
--- a/lib/couchrest/mixins/design_doc.rb
+++ b/lib/couchrest/mixins/design_doc.rb
@@ -37,9 +37,6 @@ module CouchRest
                   if (doc['couchrest-type'] == '#{self.to_s}') {
                     emit(null,1);
                   }
-                }",
-                'reduce' => "function(keys, values) {
-                  return sum(values);
                 }"
               }
             }
diff --git a/lib/couchrest/mixins/document_queries.rb b/lib/couchrest/mixins/document_queries.rb
index 3ea516c..defff3d 100644
--- a/lib/couchrest/mixins/document_queries.rb
+++ b/lib/couchrest/mixins/document_queries.rb
@@ -19,9 +19,7 @@ module CouchRest
         # equal to the name of the current class. Takes the standard set of 
         # CouchRest::Database#view options
         def count(opts = {}, &block)
-          result = all({:reduce => true}.merge(opts), &block)['rows']
-          return 0 if result.empty?
-          result.first['value']
+          all({:raw => true, :limit => 0}.merge(opts), &block)['total_rows']
         end
         
         # Load the first document that have the "couchrest-type" field equal to