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@@ -1,5 +1,7 @@
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 * SVN*
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+* Reloading an instance refreshes its aggregations as well as its associations.  #3024 [François Beausolei]
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+
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 * Fixed that using :include together with :conditions array in Base.find would cause NoMethodError #2887 [Paul Hammmond]
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 * PostgreSQL: more robust sequence name discovery.  #3087 [Rick Olson]

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@@ -5,6 +5,12 @@
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       base.extend(ClassMethods)
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     end
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+    def clear_aggregation_cache #:nodoc:
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+      self.class.reflect_on_all_aggregations.to_a.each do |assoc|
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+        instance_variable_set "@#{assoc.name}", nil
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+      end unless self.new_record?
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+    end
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+
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     # Active Record implements aggregation through a macro-like class method called +composed_of+ for representing attributes 
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     # as value objects. It expresses relationships like "Account [is] composed of Money [among other things]" or "Person [is]
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     # composed of [an] address". Each call to the macro adds a description of how the value objects are created from the 

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@@ -1304,6 +1304,7 @@
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       # Reloads the attributes of this object from the database.
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       def reload
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+        clear_aggregation_cache
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         clear_association_cache
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         @attributes.update(self.class.find(self.id).instance_variable_get('@attributes'))
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         self

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@@ -44,5 +44,24 @@
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     assert_equal "39", customers(:david).gps_location.latitude
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     assert_equal "-110", customers(:david).gps_location.longitude
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   end
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+
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+  def test_reloaded_instance_refreshes_aggregations
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+    assert_equal "35.544623640962634", customers(:david).gps_location.latitude
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+    assert_equal "-105.9309951055148", customers(:david).gps_location.longitude
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+
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+    Customer.update_all("gps_location = '24x113'")
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+    customers(:david).reload
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+    assert_equal '24x113', customers(:david)['gps_location']
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+
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+    assert_equal GpsLocation.new('24x113'), customers(:david).gps_location 
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+  end
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+
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+  def test_gps_equality
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+    assert GpsLocation.new('39x110') == GpsLocation.new('39x110')
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+  end
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+
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+  def test_gps_inequality
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+    assert GpsLocation.new('39x110') != GpsLocation.new('39x111')
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+  end
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 end

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@@ -44,5 +44,9 @@
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   def longitude
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     gps_location.split("x").last
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   end
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+
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+  def ==(other)
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+    self.latitude == other.latitude && self.longitude == other.longitude
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+  end
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 end