title: JSON Array field handling in Elephant-Bird UDF in PIG
body: <p>A quick question on the JSON handling in PIG. </p>
  
  <p>I tried some JsonLoader called Elephant-Bird to load and handle JSON data like the followings:</p>
  
  <pre><code>{
     "SV":1,
     "AD":[
        {
           "ID":"46931606",
           "C1":"46",
           "C2":"469",
           "ST":"46931",
           "PO":1
        },
        {
           "ID":"46721489",
           "C1":"46",
           "C2":"467",
           "ST":"46721",
           "PO":5
        }
     ]
  }
  </code></pre>
  
  <p>The loader works well for simple fields but it doesn't work well for any array field. I don't know how I can access elements in the array ("AD" field above) with this UDF or in any other way? Please advise. </p>