title: Write into arrays and get length of elements in Apache Camel
body: <p>Being a noob in Apache camel, I have two questions. </p>
  
  <ol>
  <li><p>I am trying to unmarshall a csv file using camel and my code is 
  Later I need to forward that values into another route and there I access them like </p>
  
  <p>${body[0]}...${body[1]}.. etc. </p></li>
  </ol>
  
  <p>How can I determine if the element exists, something like, </p>
  
  <pre><code>${body[0]}!=null. 
  </code></pre>
  
  <ol>
  <li>I am able to tokenzine my input file using various delimiters. For example, if I try to achieve the same result as above, how can i save all the tokens into an array of some kind, so that once I get that array, i can later use it in a array somewhere. </li>
  </ol>
  
  <p>Please Note that I cannot use Java here and I am restricted to use only spring dsl. </p>