[jira] [Commented] (WICKET-6467) wicket:child nested inside container can not be found by Wicket

["Andrea Del Bene (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WICKET-6467?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16211080#comment-16211080 ] 

Andrea Del Bene commented on WICKET-6467:
-----------------------------------------

Hi [~eximius],

the solution in this particular case is to make *BaseComponent* implements *IComponentResolver*:

{code}
public class ChildComponent extends BaseComponent implements IComponentResolver {
	private static final long serialVersionUID = -4136429757104422543L;

	public ChildComponent(String id) {
		super(id);
	}

	@Override
	protected void onInitialize() {
		super.onInitialize();
		add(new Label("child", "I'm the child"));
	}

	@Override
	public Component resolve(MarkupContainer container, MarkupStream markupStream, ComponentTag tag) {
		return get(tag.getId());
	}
}
{code}

Method *resolve* is called when a child component can not be resolved using the regular markup.

> wicket:child nested inside container can not be found by Wicket
> ---------------------------------------------------------------
>
>                 Key: WICKET-6467
>                 URL: https://issues.apache.org/jira/browse/WICKET-6467
>             Project: Wicket
>          Issue Type: Bug
>    Affects Versions: 8.0.0-M7
>            Reporter: Kamil
>            Assignee: Andrea Del Bene
>         Attachments: showcase-childExtend.zip
>
>
> Sample app in attachment.
> When wicket:child is not "top level" component but is nested inside another Wicket container, it can not be found by Wicket and exception is being thrown:
> {code}
> 17:06:34.719 [qtp767010715-12] ERROR org.apache.wicket.MarkupContainer - Unable to find component with id 'child' in [Form [Component id = form]]
> 	Expected: 'test:form:child'.
> 	Found with similar names: 'test:child'
> 17:06:34.721 [qtp767010715-12] WARN  RequestCycleExtra - ********************************
> 17:06:34.722 [qtp767010715-12] WARN  RequestCycleExtra - Handling the following exception
> org.apache.wicket.markup.MarkupException: Unable to find component with id 'child' in [Form [Component id = form]]
> 	Expected: 'test:form:child'.
> 	Found with similar names: 'test:child'
> {code}
> I know, that it will work if I make "form" accessible for the child and add component there, but It is clearly not what:
> {code}
> We should not require the subclass to start worrying about the exact implementation of the super class.
> {code}
> stands for (https://issues.apache.org/jira/browse/WICKET-5580)



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