OrderProcessingService.java

package orderprocessing.service;

import orderprocessing.data.Order;

/**
 * Created by manurip on 6/28/15.
 */
public class OrderProcessingService {
    /*
	 * This is a test method
	 */
    public String sayHello() {
        return "Hello";
    }

    public String addOrder(String index,Double price) {


        Order newOrder = new Order(index,price);

        XMLWriterDOM.getInstance().saveOrder(newOrder);

        Order retrieved = XMLReaderDOM.getInstance().retrieveOrder(index);

        if(retrieved!= null){
            return "Added Order. Index:"+retrieved.getIndex()+" Price:"+retrieved.getPrice();
        }
        else{
            return "Unable to add order";
        }
    }

    public String getPrice(String index)  {

        String result = "NONE";

        Order order = XMLReaderDOM.getInstance().retrieveOrder(index);
        if(order!=null){
            result = Double.toString(order.getPrice());
        }

        System.out.println("Price Retrived. Index=" + index
                + ", Price=" + result);

        return result;
    }
}