title: camel http endpoint forming url dynamically
body: <p>Guys I am trying to use </p>
  
  <pre><code>{
  from("direct:a").to (someUrl).processor(new Processor(){
  
     @Override
     public void process(Exchange arg0) throws Exception
     {
        // do something
     }
  
  });
  
  
  where someUrl is of the type http://xyz.com/{id}?test=&lt;value1&gt;&amp;test1=&lt;value2&gt;
  }
  </code></pre>
  
  <p>and this url will change on every request to the route.</p>
  
  <p>What i have already tried. Passing params as headers and try to access in the route using the header("test") and using ${in.header.test} both doesn't seem to work.</p>
  
  <p>any suggestions will be greatly helpful. </p>