[OGNL-22] Empty string evaluates as null

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.7
• Fix Version/s: 4.0
• Component/s: ExpressionCompiler
• Environment: Tapestry 4.1.2 snapshot from 3-21, OGNL 2.7 snapshot from 3-25, Firefox 2, WinXP
• Assignee: Jesse Kuhnert
• Reporter: Ben Dotte
• Created: 26/Mar/07 14:02
• Updated: 27/Mar/13 12:37
• Resolved: 26/Mar/07 20:17

Description

The empty string ('') evaluates to null in 2.7, whereas it evaluated to an empty string in 2.6. For example:

<span jwcid="@Any" class="ognl:'' + 'tabHeader'>Test</span>

This outputs <span class="nulltabHeader">. In 2.6 the class output was "tabHeader".