We have several examples of general purpose feature collection / feature
iterator wrappers. Such as the combo provided for handling reprojection.

It is unclear from your stack trace what the issue is, I expect your
original Query did not list the attributes you are referring to?

Jody Garnett


On Thu, Jan 23, 2014 at 3:49 AM, carlo cancellieri <
carlo.cancelli...@geo-solutions.it> wrote:

> Hi list,
>  I'm developing a new SimpleFeatureCollectionReader which wraps
> a SimpleFeatureCollection (ContentFeatureCollection) to iterating over it.
> I'm not sure why this is not supported using an H2 datastore as source.
> Note that I've already tested this with shpfile with success.
> Is it possible to create some general purpose FeatureCollectionReader?
> What/where I'm wrong?
>
> Here is the stack trace:
>
> -----------------------------------------------------
> java.lang.UnsupportedOperationException
> at
> org.geotools.jdbc.JDBCFeatureReader$ResultSetFeature.getName(JDBCFeatureReader.java:750)
>  at
> org.geotools.filter.expression.DirectPropertyAccessorFactory$DirectPropertyAccessor.canHandle(DirectPropertyAccessorFactory.java:58)
> at
> org.geotools.filter.expression.PropertyAccessors.findPropertyAccessors(PropertyAccessors.java:128)
>  at
> org.geotools.filter.AttributeExpressionImpl.evaluate(AttributeExpressionImpl.java:254)
> at
> org.geotools.filter.AttributeExpressionImpl.evaluate(AttributeExpressionImpl.java:231)
>  at
> org.geotools.filter.GeometryFilterImpl.getGeometries(GeometryFilterImpl.java:250)
> at
> org.geotools.filter.GeometryFilterImpl.evaluate(GeometryFilterImpl.java:388)
>  at org.geotools.filter.AndImpl.evaluate(AndImpl.java:57)
> at
> org.geotools.data.FilteringFeatureReader.hasNext(FilteringFeatureReader.java:130)
>  at org.geotools.data.MaxFeatureReader.hasNext(MaxFeatureReader.java:86)
> at
> org.geotools.data.store.ContentFeatureCollection$WrappingFeatureIterator.hasNext(ContentFeatureCollection.java:208)
>  at
> org.geotools.data.cache.utils.SimpleFeatureCollectionReader.hasNext(SimpleFeatureCollectionReader.java:73)
> at
> org.geotools.data.FilteringFeatureReader.hasNext(FilteringFeatureReader.java:127)
>  at org.geotools.data.MaxFeatureReader.hasNext(MaxFeatureReader.java:86)
> at
> org.geotools.data.store.ContentFeatureCollection$WrappingIterator.hasNext(ContentFeatureCollection.java:259)
>  at
> org.geoserver.feature.RetypingFeatureCollection$RetypingIterator.hasNext(RetypingFeatureCollection.java:115)
> at
> org.geotools.feature.collection.DelegateFeatureIterator.hasNext(DelegateFeatureIterator.java:54)
>  at
> org.geotools.data.crs.ForceCoordinateSystemIterator.hasNext(ForceCoordinateSystemIterator.java:145)
> at
> org.geotools.feature.collection.DelegateFeatureIterator.hasNext(DelegateFeatureIterator.java:54)
>  at
> org.geoserver.template.DirectTemplateFeatureCollectionFactory$TemplateFeatureIterator.hasNext(DirectTemplateFeatureCollectionFactory.java:103)
> at freemarker.core.IteratorBlock$Context.runLoop(IteratorBlock.java:162)
>  at freemarker.core.Environment.visit(Environment.java:428)
> at freemarker.core.IteratorBlock.accept(IteratorBlock.java:102)
>  at freemarker.core.Environment.visit(Environment.java:221)
> at freemarker.core.MixedContent.accept(MixedContent.java:92)
>  at freemarker.core.Environment.visit(Environment.java:221)
> at freemarker.core.Environment.process(Environment.java:199)
>  at freemarker.template.Template.process(Template.java:237)
> at
> org.geoserver.wms.featureinfo.HTMLFeatureInfoOutputFormat.write(HTMLFeatureInfoOutputFormat.java:123)
>  at
> org.geoserver.wms.featureinfo.GetFeatureInfoResponse.write(GetFeatureInfoResponse.java:108)
> at org.geoserver.ows.Dispatcher.response(Dispatcher.java:912)
>  at
> org.geoserver.ows.Dispatcher.handleRequestInternal(Dispatcher.java:276)
> at
> org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:153)
>  at
> org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:48)
> at
> org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:923)
>  at
> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:852)
> at
> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
>  at
> org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
>  at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
>  at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1093)
> at
> org.geoserver.filters.ThreadLocalsCleanupFilter.doFilter(ThreadLocalsCleanupFilter.java:23)
>  at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
> at
> org.geoserver.filters.SpringDelegatingFilter$Chain.doFilter(SpringDelegatingFilter.java:74)
>  at
> org.geoserver.filters.SpringDelegatingFilter.doFilter(SpringDelegatingFilter.java:45)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>  at
> org.geoserver.platform.AdvancedDispatchFilter.doFilter(AdvancedDispatchFilter.java:49)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>  at
> org.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>  at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:311)
> at
> org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:68)
>  at
> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:116)
> at
> org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:83)
>  at
> org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:72)
> at
> org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:91)
>  at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
> at
> org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:68)
>  at
> org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
> at
> org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:72)
>  at
> org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:91)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
>  at
> org.geoserver.security.filter.GeoServerAnonymousAuthenticationFilter.doFilter(GeoServerAnonymousAuthenticationFilter.java:53)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
>  at
> org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:68)
> at
> org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:150)
>  at
> org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:72)
> at
> org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:91)
>  at
> org.geoserver.security.filter.GeoServerBasicAuthenticationFilter.doFilter(GeoServerBasicAuthenticationFilter.java:82)
> at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
>  at
> org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:68)
> at
> org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
>  at
> org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:72)
> at
> org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:91)
>  at
> org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:323)
> at
> org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:173)
>  at
> org.geoserver.security.GeoServerSecurityFilterChainProxy.doFilter(GeoServerSecurityFilterChainProxy.java:97)
> at
> org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:346)
>  at
> org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:259)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>  at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:71)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>  at org.geoserver.filters.GZIPFilter.doFilter(GZIPFilter.java:41)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>  at
> org.geoserver.filters.SessionDebugFilter.doFilter(SessionDebugFilter.java:46)
> at
> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>  at
> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
> at
> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>  at
> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
> at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
>  at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
> at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>  at org.mortbay.jetty.Server.handle(Server.java:324)
> at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
>  at
> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:828)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
>  at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>  at
> org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
> at
> org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
>
> Cheers,
> Carlo
>
>
> --
> ==
> Our support, Your Success! Visit http://opensdi.geo-solutions.it for more
> information.
> ==
>
> Dott. Carlo Cancellieri
> @cancellieric
> Software Engineer
>
> GeoSolutions S.A.S.
> Via Poggio alle Viti 1187
> 55054  Massarosa (LU)
> Italy
> phone: +39 0584 962313
> mobile: +39 3371094494
> fax:   +39 0584 1660272
>
> http://www.geo-solutions.it
> http://twitter.com/geosolutions_it
>
> -------------------------------------------------------
>
>
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