4.7. Binding Data

  1. Using the Order XML message, look at the full XML-to-Java binding configuration. Here are the Java objects that you must populate from that XML message (the "getters" and "setters" are not shown): 
    public class Order {
    private Header header;
    private List<OrderItem> orderItems;
}
 
public class Header {
    private Date date;
    private Long customerNumber;
    private String customerName;
    private double total;
}
 
public class OrderItem {
    private long productId;
    private Integer quantity;
    private double price;
}
  2. Use this configuration to bind the data from the order XML to the object model: 
    <?xml version="1.0"?>
<smooks-resource-list xmlns="http://www.milyn.org/xsd/smooks-1.1.xsd" xmlns:jb="http://www.milyn.org/xsd/smooks/javabean-1.4.xsd">
 
(1)   <jb:bean beanId="order" class="com.acme.Order" createOnElement="order">
(1.a)     <jb:wiring property="header" beanIdRef="header" />
(1.b)     <jb:wiring property="orderItems" beanIdRef="orderItems" />
      </jb:bean>
 
(2)   <jb:bean beanId="header" class="com.acme.Header" createOnElement="order">
(2.a)     <jb:value property="date" decoder="Date" data="header/date">
              <jb:decodeParam name="format">EEE MMM dd HH:mm:ss z yyyy</jb:decodeParam>
          </jb:value>
(2.b)     <jb:value property="customerNumber" data="header/customer/@number" />
(2.c)     <jb:value property="customerName" data="header/customer" />
(2.d)     <jb:expression property="total" execOnElement="order-item" >
              += (orderItem.price * orderItem.quantity);
          </jb:expression>
      </jb:bean>
 
(3)   <jb:bean beanId="orderItems" class="java.util.ArrayList" createOnElement="order">
(3.a)     <jb:wiring beanType="com.acme.OrderItem" /> <!-- Could also wire using beanIdRef="orderItem" -->
      </jb:bean>
 
(4)   <jb:bean beanId="orderItem" class="com.acme.OrderItem" createOnElement="order-item">
(4.a)     <jb:value property="productId" data="order-item/product" />
(4.b)     <jb:value property="quantity" data="order-item/quantity" />
(4.c)     <jb:value property="price" data="order-item/price" />
      </jb:bean>
 
</smooks-resource-list>