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4.31. Extracting a List Object with MVEL
To use MVEL to extract a List object from an existing bean in the bean context, see the example below. (The Order object in this example has a method that returns a list which we must use to add order lines.)
<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"> <jb:bean beanId="order" class="some.package.Order" createOnElement="order" > <!-- ... bindings --> </jb:bean> <!-- The factory attribute uses MVEL to access the order object in the bean context and calls its getOrderLines() method to get the List. This list is then added to the bean context under the beanId 'orderLines' --> <jb:bean BeanId="orderLines" class="java.util.List" factory="mvel:order.getOrderLines()" createOnElement="order" > <jb:wiring BeanIdRef="orderLine" /> </jb:bean> <jb:bean BeanId="orderLine" class="java.util.List" createOnElement="order-line" > <!-- ... bindings --> </jb:bean> </smooks-resource-list>
Note
Array objects are not supported. If a factory returns an array then Smooks will throw an exception.