now rewrites the indexes to cache on cache miss + delegation hit

lib/cached/config_compiler.rb

@@ -57,12 +57,16 @@ def compiled_fetch_method_for(index)
 
       method_suffix_and_parameters = "#{index_name}(#{index.join(', ')})"
 
-      delegates = @config.delegates.collect { |delegate| "#{delegate}_by_#{method_suffix_and_parameters}"  }
+      delegation = @config.delegates.collect { |delegate| "|| #{delegate}_by_#{method_suffix_and_parameters}"  }
 
       "def self.lookup_by_#{method_suffix_and_parameters};" + 
-      "  key = Cached.store.read(#{cache_key}); "+
-      #}"  key ? Cached.store.read(key): Cached.store.fetch(key) { #{ delegates.join(' || ')  } } ;" + 
-      "  key ? lookup(key): nil;" +
+      "  if key = Cached.store.read(#{cache_key});"+
+      "    lookup(key);"+
+      "  else;"+ 
+      "    obj = nil #{delegation};" +
+      "    obj.save_indexes_to_cache if obj.respond_to?(:save_indexes_to_cache);" +
+      "    obj;" +
+      "  end;" +
       "end;"
     end
 

test/test_record.rb

@@ -16,7 +16,7 @@ def name
     index :last_name         
     index [:first_name, :last_name]
 
-    #delegate_to :find
+    delegate_to :find
   end
 end
 
@@ -26,14 +26,26 @@ def setup
     @bob = Person.create(:first_name => 'Bob', :last_name => 'Bobsen')
   end
 
+  test "cachemiss delegates to find" do
+    assert !Cached.store.read("person:1")
+    assert_equal @bob, Person.lookup(@bob.id)
+  end
+
   test "load bob from cache store" do
     @bob.save_to_cache
 
-    assert_equal @bob, Person.find_by_first_name('Bob')
-    assert_equal @bob, Person.find_by_last_name('Bobsen')
-    assert_equal @bob, Person.find_by_first_name_and_last_name('Bob', 'Bobsen')
-
+    assert_equal @bob, Person.lookup_by_first_name('Bob')
+    assert_equal @bob, Person.lookup_by_last_name('Bobsen')
+    assert_equal @bob, Person.lookup_by_first_name_and_last_name('Bob', 'Bobsen')    
   end
+
+  test "cache miss on index query will make returned object re-save its indexes" do
+    assert !Cached.store.read("person/first_name:#{hash('Bob')}")
+    assert_equal @bob, Person.lookup_by_first_name('Bob')
+
+    assert Cached.store.read("person/first_name:#{hash('Bob')}")
+  end
+
 
   private