Failure to generate ArcGrid outputs, the writer fails with an NPE
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Key: GEOS-2791
URL: http://jira.codehaus.org/browse/GEOS-2791
Project: GeoServer
Issue Type: Bug
Components: WCS
Affects Versions: 1.7.3
Reporter: Andrea Aime
Assignee: Simone Giannecchini
Fix For: 1.7.4
Running this reques against 1.7.3 + sample data:
results in:
{panel}
org.vfny.geoserver.wcs.WcsException: Problems Rendering Imagenull
at org.vfny.geoserver.wcs.responses.coverage.AscCoverageResponseDelegate
.encode(AscCoverageResponseDelegate.java:130)
at org.geoserver.wcs.response.WCSGetCoverageStoreResponse.write(WCSGetCo
verageStoreResponse.java:106)
at org.geoserver.ows.Dispatcher.response(Dispatcher.java:711)
at org.geoserver.ows.Dispatcher.handleRequestInternal(Dispatcher.java:21
5)
at org.springframework.web.servlet.mvc.AbstractController.handleRequest(
AbstractController.java:153)
at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.ha
ndle(SimpleControllerHandlerAdapter.java:48)
at org.springframework.web.servlet.DispatcherServlet.doDispatch(Dispatch
erServlet.java:875)
at org.springframework.web.servlet.DispatcherServlet.doService(Dispatche
rServlet.java:809)
at org.springframework.web.servlet.FrameworkServlet.processRequest(Frame
workServlet.java:571)
at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServl
et.java:501)
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$CachedChain.doFilter(Servlet
Handler.java:1093)
at org.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCha
racterEncodingFilter.java:108)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(Servlet
Handler.java:1084)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(F
ilterChainProxy.java:264)
at org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(Filt
erSecurityInterceptor.java:107)
at org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(Fi
lterSecurityInterceptor.java:72)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(F
ilterChainProxy.java:274)
at org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTra
nslationFilter.java:110)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(F
ilterChainProxy.java:274)
at org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFil
ter(AnonymousProcessingFilter.java:125)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(F
ilterChainProxy.java:274)
at org.acegisecurity.ui.basicauth.BasicProcessingFilter.doFilter(BasicPr
ocessingFilter.java:178)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(F
ilterChainProxy.java:274)
at org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilte
r(HttpSessionContextIntegrationFilter.java:229)
at org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(F
ilterChainProxy.java:274)
at org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.jav
a:148)
at org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.j
ava:98)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(Servlet
Handler.java:1084)
at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:73)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(Servlet
Handler.java:1084)
at org.geoserver.filters.ReverseProxyFilter.doFilter(ReverseProxyFilter.
java:163)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(Servlet
Handler.java:1084)
at org.geoserver.filters.GZIPFilter.doFilter(GZIPFilter.java:41)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(Servlet
Handler.java:1084)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:3
60)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.jav
a:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:1
81)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:7
26)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
at org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHand
lerCollection.java:206)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.
java:114)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:1
52)
at org.mortbay.jetty.Server.handle(Server.java:324)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:50
5)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpCo
nnection.java:828)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.ja
va:395)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool
.java:450)
Caused by: java.lang.NullPointerException
at org.geotools.gce.arcgrid.ArcGridWriter.getCandidateNoData(ArcGridWrit
er.java:623)
at org.geotools.gce.arcgrid.ArcGridWriter.writeGridCoverage(ArcGridWrite
r.java:338)
at org.geotools.gce.arcgrid.ArcGridWriter.write(ArcGridWriter.java:523)
at org.vfny.geoserver.wcs.responses.coverage.AscCoverageResponseDelegate
.encode(AscCoverageResponseDelegate.java:118)
... 52 more
{panel}
The code is assuming there are categories around, but apparently, there are none:
{code}
static double getCandidateNoData(GridCoverage2D gc) {
// no data management
final GridSampleDimension sd = (GridSampleDimension) gc
.getSampleDimension(0);
final List categories = sd.getCategories();
final Iterator it = categories.iterator(); **** NPE!! ******
Category candidate;
double inNoData = Double.NaN;
final String noDataName = Vocabulary.format(VocabularyKeys.NODATA);
while (it.hasNext()) {
candidate = (Category) it.next();
final String name = candidate.getName().toString();
if (name.equalsIgnoreCase("No Data")
|| name.equalsIgnoreCase(noDataName)) {
inNoData = candidate.getRange().getMaximum();
}
}
return inNoData;
}
{code}
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