title: Get names of field schema from Pig
body: <p>I'm working on a JsonStorage for Pig. Everything works fine, but at least I need to get the names of the fields (i.e. crdate, name, positions) from the pig schema.</p>
  
  <pre><code>| A | crdate: bytearray | name: bytearray | positions: bytearray |
  </code></pre>
  
  <p>Actually I extend my class by StoreFunc that provides no function to get the names of the fields.</p>
  
  <pre><code>public class PigJsonStorage extends StoreFunc { .. }
  </code></pre>
  
  <p>Can anybody help me :)</p>