[TAP5-922] Allow a null or blank value to be supplied in Link.addParameter(), and render out the parameter name with the missing value

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 5.1.0.5
• Fix Version/s: 5.3
• Component/s: tapestry-core
• Assignee: Unassigned
• Reporter: Angelo Chen
• Created: 10/Nov/09 00:30
• Updated: 04/Jul/11 20:21
• Resolved: 01/Apr/11 00:40

Description

I have a query string that I need to append to a Link object, the query string is:

?gender=M&country=

Link lnk = renderLinkSource.createPageRenderLink("SamplePage");

lnk.addParameter("gender", "M"); // this works

lnk.addParameter("country", null);

above line failed with :

RequestExceptionHandler Unexpected runtime exception: Parameter value was null or contained only whitespace.

A null parameter should be valid in a URL, sometimes it is needed to have Google Analytics pick up the complete URL even it is null.