XQEngine engine = new XQEngineClient("//" + bindHost + ":1099/xbird/srv-01");
QueryRequest request1 = new QueryRequest("1+2", ReturnType.STRING);
request1.setReplyPattern(ReplyPattern.POLL);
// not send
Assert.assertNull(engine.poll(request1));
// send#2
QueryRequest request2 = new QueryRequest("1+4");
request2.setReplyPattern(ReplyPattern.POLL);
Assert.assertNull(engine.execute(request2));