[WICKET-1583] NPE in EnclosureResolver

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.3.3
• Fix Version/s: 1.4-RC1
• Component/s: wicket
• Assignee: Juegen Donnerstag
• Reporter: Jonathan Locke
• Created: 02/May/08 20:34
• Updated: 24/Aug/08 13:44
• Resolved: 24/Aug/08 13:44

Description

if you put a single wicket:container in a wicket:enclosure, it will NPE looking for a "child" attribute. you can work around by either changing the container to a div (in which case it will correctly default to the single child) or by adding a child="name" attribute to the enclosure to explicitly specify the single child.

Caused by: java.lang.NullPointerException
at org.apache.wicket.markup.resolver.EnclosureResolver.resolve(EnclosureResolver.java:59)
at org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1324)
at org.apache.wicket.MarkupContainer.renderComponentTagBody(MarkupContainer.java:1476)
at org.apache.wicket.MarkupContainer.renderAssociatedMarkup(MarkupContainer.java:639)
at org.apache.wicket.markup.html.panel.Panel.onComponentTagBody(Panel.java:112)
at org.apache.wicket.Component.renderComponent(Component.java:2478)
... 47 common frames omitted