[TAP5-1401] 5.2.4 Form's getDefaultTracker() incompatible with 5.1.0.5

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Invalid
• Affects Version/s: 5.2.4
• Component/s: documentation, tapestry-core
• Assignee: Howard Lewis Ship
• Reporter: Michael Gentry
• Created: 04/Jan/11 14:25
• Updated: 01/Apr/11 00:19
• Resolved: 01/Apr/11 00:19

Description

In Tapestry 5.1.0.5, you can have code such as:

@Component
private Form inputs;
...
if (inputs.getDefaultTracker().getHasErrors())
...

This fails in 5.2.4 because getDefaultTracker() returns null if there are no errors. This appears to be related to this closed bug:

https://issues.apache.org/jira/browse/TAP5-979

Perhaps getDefaultTracker() should check for a null and return an empty one to be backwards compatible with 5.1.0.5? Alternatively, document it as a known incompatibility in the release notes.