[Geotools-devel] ClassCastException: class java.util.HashMap produced when FeatureCollection expected check schema use of AbstractFeatureCollection

[Kiss, M. <kis...@fl...>]

dear list,

when i try to search a geoserver wms layer that is not queryable
(layer/publishing/wms settings Queryable unchecked), i've got an
error, which is misleading saying: "class java.util.HashMap produced
when FeatureCollection expected check schema use of
AbstractFeatureCollection".

the cause is:
at org.geotools.GML.decodeFeatureCollection(GML.java:451) the parsed
server response object is a HashMap, with contents:
{ServiceException={null=Layer Pilot:HouseNumbers_point_eov is not
queryable, locator=QUERY_LAYERS, code=OperationNotSupported},
version=1.1.1}

but the toFeatureCollection method is not able the handle the error
and throws an exception on line 484.

i am using geomajas 1.12.8 with gt-xml-2.7.4-GBE-276.jar, but the
relevant code in the trunk is the same. geoserver is 2.1.2,
(maven, win7, eclipse, gwt)

java.lang.ClassCastException: class java.util.HashMap produced when
FeatureCollection expected check schema use of
AbstractFeatureCollection
	at org.geotools.GML.toFeatureCollection(GML.java:484)
	at org.geotools.GML.decodeFeatureCollection(GML.java:452)
	at org.geomajas.layer.wms.WmsLayer.getFeaturesByLocation(WmsLayer.java:249)
	at org.geomajas.layer.wms.command.wms.SearchByPointCommand.execute(SearchByPointCommand.java:124)
	at org.geomajas.layer.wms.command.wms.SearchByPointCommand.execute(SearchByPointCommand.java:60)
	at org.geomajas.internal.service.CommandDispatcherImpl.execute(CommandDispatcherImpl.java:114)
	at org.geomajas.gwt.server.mvc.GeomajasController.execute(GeomajasController.java:117)
	at sun.reflect.GeneratedMethodAccessor128.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:569)
	at com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)
	at com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
	at com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
	at org.geomajas.gwt.server.mvc.GeomajasController.handleRequest(GeomajasController.java:65)
	at sun.reflect.GeneratedMethodAccessor127.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:426)
	at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:414)
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:644)
	at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:560)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1097)
	at org.geomajas.servlet.CacheFilter.doFilter(CacheFilter.java:201)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1088)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:729)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:324)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
	at org.mortbay.jetty.HttpConnection$RequestHandler.content(HttpConnection.java:843)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
	at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)