Content Comparison

...

There are two options... 

# . JSON-Stringify the Map<String,String> and use that as the XML attribute value which is "simple" but ugly as hell, or 
# . Provide a more structured approach to defining the request parameters associated with the request: e.g. instead of using attributes, we can use Param elements...

<os:HttpRequest key="..." method="get" href="...">
  <os:Param name="format" value="text" />
  <os:Param name="headers">
    <os:Param name="X-Foo-Header" value="blah blah blah" />
    <os:Param name="Prefer" value="lenient" />
  </os:Param>
</os:HttpRequest>

http://code.google.com/p/opensocial-resources/issues/detail?id=1298