[CXF-2986] sets null instead of empty List/Set/SortedSet when value isn't in query string

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.2.10
• Fix Version/s: 2.3, 2.2.11
• Component/s: JAX-RS
• Assignee: Unassigned
• Reporter: Brad Cupit
• Created: 09/Sep/10 22:59
• Updated: 11/Oct/10 14:46
• Resolved: 03/Oct/10 21:05

Description

CXF sets a null collection, rather than an empty one, when the query param isn't in the request

Example:
@GET
@Path("/stuff")
public Response get(@QueryParam("option") Set<String> options)

{ ... }

and http://localhost:8080/stuff is called (but ?option=abc is not on the query string), then options will be null, but it should be an empty Set

The javadocs in @DefaultValue says:
If this annotation is not used and the corresponding metadata is not present in the request, the value will be an empty collection for List, Set or SortedSet

this seems similar to CXF-1675