public class MyApp extends Activity
{
    public Trestle Tr = null;

    @Override
    public void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      Tr = new Trestle("appId", "appClientKey");

      // This is a very simple example of the Trestle Chain server.
      // This should give you an idea of the possibilities when using the Chain server.

      // Clear the Chain buffer in case there was a previously executed chain
      Tr.StartNewChain();

      // Create a chain post operation as link1
      JSONObject data1 = new JSONObject();
      data1.put("field1","value1");
      data1.put("field2","value2");
      Tr.ChainPost("link1", "v1/object/mycol", data1);

      // Add a conditional for link2
      JSONObject cif = new JSONObject();
      cif.put("type","if");
      cif.put("comparison","link1->results->code eq 201");
      Tr.AddCondition(cif);
      // link2 will only be executed if the 'cif' conditional is true
      JSONObject data2 = new JSONObject();
      data2.put("field3","value3");
      Tr.ChainPost("link2", "v1/object/mycol", data2);
      // close the conditional..
      JSONObject cendif = new JSONObject();
      cendif.put("type","endif");
      cendif.put("comparison","true");
      Tr.AddCondition(cendif);

      // link3 uses Trestle's geo service
      Tr.ChainGet("link3","v1/geo/65.52.33.4",null);

      // Now execute the chain, sending all the links and conditionals as one batch
      Tr.ChainExecute( new  TrestleResponseDelegate() {
          public void Response(JSONObject response) throws Exception  {
              if(response.getInt("code") == 200) {
                  Log.d("Trestle","Done");
              }
          }
      });
}