[WINK-236] Generics not usable as return type

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.0
• Component/s: Providers
• Assignee: Jesse A. Ramos
• Reporter: Juergen Zimmermann
• Created: 07/Dec/09 08:42
• Updated: 04/Feb/10 15:28
• Resolved: 04/Feb/10 15:28

Description

I want to use a resource's method as follows:
@GET
@Path("/customers")
@Produces(

{APPLICATION_XML, TEXT_XML, APPLICATION_JSON}

)
public List<Customer> findCustomers(@QueryParam("lastname") @DefaultValue("") String lastname, @Context HttpHeaders headers) throws ...

09:39:14,839 ERROR [FlushResultHandler] Could not find a writer or DataSourceProvider for java.util.ArrayList type and application/xml mediaType.
09:39:14,845 ERROR [RequestProcessor] WebApplicationException (500 - Internal Server Error) occured during the handlers chain invocation
javax.ws.rs.WebApplicationException
at org.apache.wink.server.internal.handlers.FlushResultHandler.handleResponse(FlushResultHandler.java:210)
at org.apache.wink.server.handlers.AbstractHandler.handleResponse(AbstractHandler.java:38)
at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:26)
at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:22)
at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:61)
at org.apache.wink.server.handlers.AbstractHandler.handleResponse(AbstractHandler.java:39)
at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:26)
at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:22)
at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:61)
at org.apache.wink.server.handlers.AbstractHandler.handleResponse(AbstractHandler.java:39)
at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:26)
at org.apache.wink.server.handlers.ResponseHandlersChain.handle(ResponseHandlersChain.java:22)
at org.apache.wink.server.handlers.AbstractHandlersChain.doChain(AbstractHandlersChain.java:61)
at org.apache.wink.server.handlers.AbstractHandlersChain.run(AbstractHandlersChain.java:48)
at org.apache.wink.server.internal.RequestProcessor.handleRequestWithoutFaultBarrier(RequestProcessor.java:158)
at org.apache.wink.server.internal.RequestProcessor.handleRequest(RequestProcessor.java:133)
at org.apache.wink.server.internal.servlet.RestServlet.service(RestServlet.java:105)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:235)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:190)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:433)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:92)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.process(SecurityContextEstablishmentValve.java:126)
at org.jboss.web.tomcat.security.SecurityContextEstablishmentValve.invoke(SecurityContextEstablishmentValve.java:70)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:158)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:330)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:905)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:592)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:2036)
at java.lang.Thread.run(Thread.java:717)