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From "CRANFORD, CHRIS" <Chris.Cranf...@setech.com>
Subject Ajax Response - Array Objects
Date Thu, 15 Jul 2010 13:30:20 GMT
I cannot seem to get my Ajax request to return to the Ajax client an
array of objects.  Instead of simply returning a key/value pair, I've
read that it is possible to return the actual domain objects, but I have
been unsuccessful.   Each time, my combo box is populated with three
values, "message type number".  

In the JSP I have:

<sx:autocompleter 
	href="%{customersUrl}" 
	preload="true" 
	name="customer" 
	valueNotifyTopics="/CustomerChanged" 
	forceValidOption="true" 
/>

In the Struts configuration I have:

<package name="ajaxpkg" namespace="/ajax" extends="json-default">
  <action name="ajaxCustomersList"
class="com.examples.struts2.action.JsonAction">
    <result type="json"><param
name="root">customersList</param></result>
  </action>
</package>

And finally in the Struts action I have:

public Map<String,Object> getCustomersList() 
{
  // Get the customer data from the service layer
  List<Customer> customers = customerService.getAllCustomers();

  // If no data was returned, return an empty collection
  // as the browser will display an empty list.
  if(customers == null)
    return new LinkedHashMap<String,Object>();

  // Data was obviously returned, create new map and populate
  // the map with the customer ID as the key and the actual
  // customer object as the payload for each pair.
  Map<String,Object> json = new LinkedHashMap<String,Object>();
  for(Customer customer : customers) {
    json.put(customer.getId().toString(), customer);
  }

  // Hand result back to Ajax client
  return(json);
} 

Can anyone explain what I have missed here in my implementation and/or
what needs to be corrected.  

Thanks,
Chris



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