[MYFACES-2784] NPE when I forget to add an interface to a composite component

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.0.0
• Fix Version/s: 2.0.1
• Assignee: Jakob Korherr
• Reporter: JCC Van Andel
• Created: 03/Jul/10 18:49
• Updated: 15/Jul/10 19:46
• Resolved: 06/Jul/10 14:48

Description

When I write a composite component like the following:

<?xml version="1.0" encoding="UTF-8"?>
<ui:composition ...>
<div>
<h2>Spaces</h2>
<ul>
<ui:repeat value="#

{spacesBean.spaces}

" var="space">
<li>
<parleys:spaceLink space="#

{space}

" renderThumbnail="true" renderLabel="true"/>
</li>
</ui:repeat>
</ul>
</div>
</ui:composition>

I get a NPE on line 1101 in ApplicationImpl, because there is no component metadata. Of course I made a mistake here, but a NPE isn't very helpful.

There is a "SEVERE: Cannot found composite bean descriptor UIComponent.BEANINFO_KEY" in the logs, but it's swallowed by a huge stack trace.

I suggest to throw a descriptive exception instead of logging the message.