[CXF-5980] JAX-RS 2.0 client: response.readEntity(new GenericType<...>{}) fails with "unexpected element" UnmarshalException

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.1
• Fix Version/s: NeedMoreInfo
• Component/s: JAX-RS

Environment

Ubuntu 14.04, Oracle Java 7

• Estimated Complexity: Unknown
• Assignee: Sergey Beryozkin
• Reporter: Karl M. Davis
• Created: 31/Aug/14 16:37
• Updated: 31/Mar/17 19:41
• Resolved: 02/Dec/14 10:52

Description

The following code fails:

public List<GameSession> getGamesForPlayer() {
	Client client = ClientBuilder.newClient();
	Builder requestBuilder = client.target(config.getServiceRoot())
			.path(IGameSessionResource.SERVICE_PATH)
				.path(IGameSessionResource.SERVICE_PATH_GAMES_FOR_PLAYER)
			.request(MediaType.TEXT_XML_TYPE);
	cookieStore.applyCookies(requestBuilder);

	Response response = requestBuilder.get();
	if (Status.Family.familyOf(response.getStatus()) != Status.Family.SUCCESSFUL)
		throw new HttpClientException(response.getStatusInfo());

	List<GameSession> games = response.readEntity(
			new GenericType<List<GameSession>>(GameSession.class) {});
	cookieStore.remember(response.getCookies());

	return games;
}

With the following root exception (I'll attach the full log out/stack tracce so you can see where in CXF this is coming from):

javax.xml.bind.UnmarshalException: unexpected element (uri:"http://justdavis.com/karl/rpstourney/api/schema/v1", local:"gameSessions"). Expected elements are <{http://justdavis.com/karl/rpstourney/api/schema/v1}account>,<{http://justdavis.com/karl/rpstourney/api/schema/v1}gameRound>,<{http://justdavis.com/karl/rpstourney/api/schema/v1}gameSession>,<{http://justdavis.com/karl/rpstourney/api/schema/v1}player>
	... 93 common frames omitted

This is the first time I've tried to pull a generic/collection object out of a Response using CXF's JAX-RS 2.0 client, so my guess is that this is just an unsupported edge case? For what it's worth, the server-side of the web service being queried is hosted by the same version of CSF and handles this just fine-- only the client seems to have issues.