[jira] [Updated] (WICKET-6141) Runtime Exception rendering ComponentTag with RelativePathPrefixHandler

["Palancher aurélien (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WICKET-6141?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Palancher aurélien updated WICKET-6141:
---------------------------------------
    Attachment: WicketQuickstart2.war

> Runtime Exception rendering ComponentTag with RelativePathPrefixHandler
> -----------------------------------------------------------------------
>
>                 Key: WICKET-6141
>                 URL: https://issues.apache.org/jira/browse/WICKET-6141
>             Project: Wicket
>          Issue Type: Bug
>          Components: wicket
>    Affects Versions: 7.2.0
>            Reporter: Palancher aurélien
>              Labels: Exception, RelativePathPrefixHandler
>         Attachments: WicketQuickstart2.war
>
>
> Sorry for my bad english, this is hard to explain...
> I get this exception:
> {noformat}
> Last cause: The component [TransparentWebMarkupContainer [Component id = wicket_relative_path_prefix_7]] was rendered already
> {noformat}
> I have one base page and two sub-pages which extend my base page
> When the markup contains ComponentTag filtered by RelativePathPrefixHandler (ie no wicket:id and href attribute), the request's counter REQUEST_COUNTER_KEY is incremented. 
> This step is fine and my first page is displayed.
> Wicket put the basepage and the first sub-page in cache.
> When i want to render the second page, the REQUEST_COUNTER_KEY  restarts to 0 BUT : all RelativePathPrefixHandler ComponentTag of the base page keep the same id, which can be the same that one or more RelativePathPrefixHandler ComponentTag of the second sub-page.
> The exception occurs only when :
> There are RelativePathPrefixHandler ComponentTags in header with <wicket:header-items /> tag or there are RelativePathPrefixHandler ComponentTags in the body of the base page.
> The problem is in MarkupContainer :
> {noformat}
> protected boolean renderNext(final MarkupStream markupStream)
> 	{
> 		// Get the current markup element
> 		final MarkupElement element = markupStream.get();
> 		// If it's a tag like <wicket..> or <span wicket:id="..." >
> 		if ((element instanceof ComponentTag) && !markupStream.atCloseTag())
> 		{
> 			// Get element as tag
> 			final ComponentTag tag = (ComponentTag)element;
> 			// Get component id
> 			final String id = tag.getId();
> 			// Get the component for the id from the given container
> 			Component component = get(id);
> {noformat}
> While rendering the relative Prefix tag in header with wicket:header-items in head, instanceof MarkupContainer is the Page
> While getting the component (get(id)), the id occurs twice and the second tag render the first one
> ( !! this is realy hard to explain.... !!)
> The QuickStart app will show you much better what i'm trying to say.
> Go to the home page, and click to the "Second Page" link



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