[jira] [Updated] (WW-2656) Support for Validation of Indexed Properties

["Lukasz Lenart (Updated) (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WW-2656?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukasz Lenart updated WW-2656:
------------------------------

    Fix Version/s:     (was: Future)
                   3.x
    
> Support for Validation of Indexed Properties
> --------------------------------------------
>
>                 Key: WW-2656
>                 URL: https://issues.apache.org/jira/browse/WW-2656
>             Project: Struts 2
>          Issue Type: Improvement
>          Components: Core Interceptors
>    Affects Versions: 2.0.11
>            Reporter: Bob Tiernay
>             Fix For: 3.x
>
>
> Currently, there doesn't seem to be a method of validating an indexed property (ie. a collection)  directly or indirecetly within an action.
> For instance, given an action OrderAction with a property order of type Order where order contains a collection trades of type Trade, the following is not possible:
> @Validation
> public class OrderAction {
> 	private Order order = new Order();
> 	@Validations(
> 		requiredFields = {
> 			@RequiredFieldValidator(message = "", key = "errors.required", fieldName = "order.trades[].field1"),
> 			@RequiredFieldValidator(message = "", key = "errors.required", fieldName = "order.trades[].field2"),
> 		}
> 	)	
> 	public String execute() throws Exception {
> 		....
>                       }
> The closest thing to support for something like the above is using the VisitorFieldValidator validator. Although it has the following disadvantages:
> 1. It must be placed on the target object (invasive and not context sensitive)
> 2. It does not work with an indirect collection  (as in the example above)
> Something like this should be possible (even struts1 validator supports indexedListProperty)
> On a related topic, it should be possible to do the following to display the error in the resulting view:
> <s:fielderror><s:param>order.trades[2].field1</s:param></s:fielderror>

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