handle.rb in defog-0.1.1

- old
+ new

@@ -1,5 +1,7 @@
+require "fastandand"
+
 module Defog
   # Create a Defog::Handle proxy instance via Defog::Proxy#file, such as
   #
   #    defog = Defog::Proxy.new(:provider => :AWS, :aws_access_key_id => access_key, ...)
   #
@@ -12,32 +14,47 @@
   #    end
   #
   # The #proxy_path attribute method returns a <code>Pathname</code>
   # giving the local proxy file location.  Querying the attribute does 
   # <i>not</i> upload, download, synchronize, or otherwise interact with
-  # the cloud or local proxy file in any way -- just returns a constructed
-  # a Pathname.
+  # the cloud or local proxy file in any way -- it just returns a constructed
+  # Pathname.  The <code>proxy_path</code> is a deterministic function of the
+  # cloud key and Defog::Proxy#proxy_root, so you can rely on it not
+  # changing between independent accesses to a cloud file.
   #  
   class Handle
 
     attr_reader :key
     attr_reader :proxy #:nodoc:
+
+    # Pathname where proxy file is, was, or will be located.  
     attr_reader :proxy_path
 
     def initialize(proxy, key) #:nodoc:
       @proxy = proxy
       @key = key
       @proxy_path = Pathname.new("#{@proxy.proxy_root}/#{@key}").expand_path
     end
 
     # Returns true if the remote cloud file exists 
     def exist?
-      !!@proxy.fog_wrapper.fog_head(@key)
+      !!fog_model
     end
 
-    # Deletes the remote cloud file
+    # Deletes the remote cloud file if it exists
     def delete
-      @proxy.fog_wrapper.fog_head(@key).destroy
+      fog_model.andand.destroy
+    end
+
+    # Returns the size of the remote cloud file, or nil if it doesn't exist
+    def size
+      fog_model.andand.content_length
+    end
+    
+    # Returns the modification date of the remote cloud file, or nil if it
+    # doesn't exist
+    def last_modified
+      fog_model.andand.last_modified
     end
 
     # Returns a URL to access the remote cloud file.
     #
     # The option