Looks strange, your config files seem to be ok. If I got you right,  
the error occurs if you open the config page.

If you configure the files manually, are you able to go to the  
geoserver demo page, select your pregeneralized layer and see your  
geometries ? If this is the case, we have a problem with the GUI. (I  
always use REST for configuring, so I did not have this error).

Perhaps we have an unlucky environment. Please try the following

1) Update to geoserver 2.0.2 and retry

2) Run geoserver with jetty instead of tomcat. If you download the  
geoserver 2.0.2 bin package, there is a start script and you can  
specify your data dir with -DGEOSERVER_DATA_DIR=....

3) Wich java version do you use. Do you use openjdk ?. Please retry  
with SUN jdk.


@Sveen, what is your environment ?.


Quoting jonathan Maura <[email protected]>:

> Hi,
> Sorry  but i didn't have time to test.
> So i tried both method (within one geoserver session and the restart
> method) without any new element !
>
> I compared my workspaces/test_hydro/reseau_hydro/datastore.xml with
> Sveen's one but i didn't notice divergence.
>
> <dataStore>
>   <id>DataStoreInfoImpl-6ecc8b3a:12a1099909d:-7ffe</id>
>   <name>reseau_hydro_pre</name>
>   <type>Generalizing data store</type>
>   <enabled>true</enabled>
>   <workspace>
>     <id>WorkspaceInfoImpl--373e47a9:12a10703e30:-8000</id>
>   </workspace>
>   <connectionParameters>
>     <entry
> key="RepositoryClassName">org.geoserver.data.gen.DSFinderRepository</entry>
>     <entry
> key="GeneralizationInfosProviderParam">file:data/shapefiles/reseau_hydro_secondaire.xml</entry>
>     <entry
> key="GeneralizationInfosProviderClassName">org.geoserver.data.gen.info.GeneralizationInfosProviderImpl</entry>
>     <entry key="namespace">http://demo.bluecham.net/hydro</entry>
>   </connectionParameters>
> </dataStore>
>
> And i checked  workspaces/test_hydro/reseau_hydro/datastore.xml for the
> test_hydro:reseau_hydro Postgis datastore :
>
> <dataStore>
>   <id>DataStoreInfoImpl--373e47a9:12a10703e30:-7ffe</id>
>   <name>reseau_hydro</name>
>   <type>PostGIS</type>
>   <enabled>true</enabled>
>   <workspace>
>     <id>WorkspaceInfoImpl--373e47a9:12a10703e30:-8000</id>
>   </workspace>
>   <connectionParameters>
>     xxxx MyPostgisParameters xxxx
>   </connectionParameters>
> </dataStore>
>
> The Workspace.xml for workspaces/test_hydro/
>
> <workspace>
>   <id>WorkspaceInfoImpl--373e47a9:12a10703e30:-8000</id>
>   <name>test_hydro</name>
> </workspace>
>
>
> Always with this XML:
>
> <?xml version="1.0" encoding="UTF-8"?>
>     <GeneralizationInfos version="1.0">
>             <GeneralizationInfo dataSourceNameSpace="test_hydro"
> dataSourceName="reseau_hydro"  featureName="reseau_hydro_secondaire_pre"
> baseFeatureName="reseau_hydro_secondaire" geomPropertyName="the_geom">
>                     <Generalization distance="5"
> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom5"/>
>                   <Generalization distance="10"
> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom10"/>
>                     <Generalization distance="20"
> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom20"/>
>                     <Generalization distance="50"
> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom50"/>
>                   <Generalization distance="80"
> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom80"/>
>                   <Generalization distance="100"
> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom100"/>
>             </GeneralizationInfo>
>  </GeneralizationInfos>
>
> And always the same stack trace:
>
> java.lang.RuntimeException: Error occurred while building the resources
> for the configuration page at
> org.geoserver.web.data.layer.NewLayerPage.buildLayerInfo(NewLayerPage.java:202)
>  at 
> org.geoserver.web.data.layer.NewLayerPage$3.onClick(NewLayerPage.java:173) at 
> org.geoserver.web.wicket.SimpleAjaxLink$1.onClick(SimpleAjaxLink.java:44) at 
> org.apache.wicket.ajax.markup.html.AjaxLink$1.onEvent(AjaxLink.java:65) at 
> org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:163) 
> at 
> org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:297)
>  at 
> org.apache.wicket.request.target.component.listener.BehaviorRequestTarget.processEvents(BehaviorRequestTarget.java:104)
>  at 
> org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91)
>  at 
> org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1239)
>  at org.apache.wicket.RequestCycle.step(RequestCycle.java:1316) at 
> org.apache.wicket.RequestCycle.steps(RequestCycle.java:1418) at 
> org.apache.wicket.RequestCycle.request(RequestCycle.java:532) at 
> org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356) at 
> org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:124) 
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at 
> javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at 
> org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java:158)
>  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:875)
>  at 
> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
>  at 
> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
>  at 
> org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
>  at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 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.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
>  at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>  at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>  at 
> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:265)
>  at 
> org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:107)
>  at 
> org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:72)
>  at 
> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>  at 
> org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:124)
>  at 
> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>  at 
> org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
>  at 
> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>  at 
> org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
>  at 
> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>  at 
> org.acegisecurity.wrapper.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:81)
>  at 
> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>  at 
> org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
>  at 
> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>  at org.acegisecurity.ui.logout.LogoutFilter.doFilter(LogoutFilter.java:110) 
> at 
> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>  at 
> org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
>  at 
> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>  at 
> org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:149) 
> at 
> org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:98) 
> at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>  at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>  at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:73) at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>  at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>  at 
> org.geoserver.filters.ReverseProxyFilter.doFilter(ReverseProxyFilter.java:183)
>  at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>  at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>  at org.geoserver.filters.GZIPFilter.doFilter(GZIPFilter.java:41) 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:233)
>  at 
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>  at 
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128) 
> at 
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102) 
> at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568) 
> at 
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>  at 
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286) 
> at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845) 
> at 
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>  at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447) 
> at java.lang.Thread.run(Thread.java:619) Caused by: 
> java.lang.RuntimeException: java.io.IOException: Data store named 
> reseau_hydro in workspace test_hydro not found at 
> org.geotools.data.gen.PreGeneralizedFeatureSource.getSchema(PreGeneralizedFeatureSource.java:379)
>  at 
> org.geotools.data.gen.PreGeneralizedFeatureSource.getSchema(PreGeneralizedFeatureSource.java:73)
>  at 
> org.geoserver.catalog.CatalogBuilder.buildFeatureType(CatalogBuilder.java:341)
>  at 
> org.geoserver.catalog.CatalogBuilder.buildFeatureType(CatalogBuilder.java:324)
>  at 
> org.geoserver.web.data.layer.NewLayerPage.buildLayerInfo(NewLayerPage.java:198)
>  ... 71 more Caused by: java.io.IOException: Data store named reseau_hydro in 
> workspace test_hydro not found at 
> org.geotools.data.gen.PreGeneralizedFeatureSource.dsNotFoundException(PreGeneralizedFeatureSource.java:112)
>  at 
> org.geotools.data.gen.PreGeneralizedFeatureSource.getBaseFeatureSource(PreGeneralizedFeatureSource.java:132)
>  at 
> org.geotools.data.gen.PreGeneralizedFeatureSource.getSchema(PreGeneralizedFeatureSource.java:353)
>  ... 75   
> more
>
> Os: Unbuntu jaunty
> Tomcat:6
> Geoserver: 2.0.1
>
> Jonathan
>
> Le lundi 26 juillet 2010 à 20:08 +0200, [email protected] a
> écrit :
>
>> Hi Joo, did the config file provided by Sveen help ?
>>
>> Quoting "Sveen Atle Frenvik (Geomatikk IKT)"
>> <[email protected]>:
>>
>> > On 07/23/2010 06:56 AM, [email protected] wrote:
>> >> Do you create your postgis data store and the pregeneralized feature
>> >> store within one geoserver session ? If you do, then try
>> >>
>> >> 1) Create your postgis data store
>> >> 2) Save and restart geoserver
>> >> 3) Create your pregeneralized feature store
>> >>
>> >> If this works, we should open a JIRA issue.
>> >>
>> >> @Sveen, in your geoserver data dir, there is a directory "workspaces".
>> >> If you go down the structure, you will find a xml config file for the
>> >> pregeneralized data store. Could you post this file on the list,
>> >> Jonathan could try to modify this file and store it manually.
>> >>
>> >>
>> > attaching $GEOSERVER_DATA/workspaces/n50/generalized_n50/datastore.xml
>> >
>> > which works for me
>> >> Quoting joo<[email protected]>:
>> >>
>> >>
>> >>> Ok i will make a "step by step", with screen capture !
>> >>>
>> >>> http://old.nabble.com/file/p29242891/Capture-1.png
>> >>>
>> >>> So my workspace is test hydro , my datastore is reseau_hydro and the
>> >>> published layer is reseau_hydro_secondaire
>> >>>
>> >>> http://old.nabble.com/file/p29242891/Capture.png
>> >>>
>> >>> And when i try to create my new Generalizing data store:
>> >>>
>> >>> http://old.nabble.com/file/p29242891/Capture-2.png
>> >>>
>> >>> With the following XML:
>> >>>
>> >>>
>> >>> &lt;xml version="1.0" encoding="UTF-8"?>
>> >>>      &lt;GeneralizationInfos version="1.0">
>> >>>              &lt;GeneralizationInfo dataSourceNameSpace="test_hydro"
>> >>> dataSourceName="reseau_hydro"  featureName="reseau_hydro_secondaire_pre"
>> >>> baseFeatureName="reseau_hydro_secondaire" geomPropertyName="the_geom">
>> >>>                      &lt;Generalization distance="5"
>> >>> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom5"/>
>> >>>          &lt;Generalization distance="10" 
>> >>> featureName="reseau_hydro_secondaire"
>> >>> geomPropertyName="the_geom10"/>
>> >>>                      &lt;Generalization distance="20"
>> >>> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom20"/>
>> >>>                      &lt;Generalization distance="50"
>> >>> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom50"/>
>> >>>          &lt;Generalization distance="80" 
>> >>> featureName="reseau_hydro_secondaire"
>> >>> geomPropertyName="the_geom80"/>
>> >>>          &lt;Generalization distance="100"
>> >>> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom100"/>
>> >>>              &lt;/GeneralizationInfo>
>> >>>   &lt;/GeneralizationInfos>
>> >>>
>> >>>
>> >>> I have the following error:
>> >>>
>> >>> java.lang.RuntimeException: Error occurred while building the   
>> resources for
>> >>> the configuration page at
>> >>>   
>> org.geoserver.web.data.layer.NewLayerPage.buildLayerInfo(NewLayerPage.java:202)
>> >>> at
>> >>>   
>> org.geoserver.web.data.layer.NewLayerPage$3.onClick(NewLayerPage.java:173)
>> >>> at
>> >>>   
>> org.geoserver.web.wicket.SimpleAjaxLink$1.onClick(SimpleAjaxLink.java:44)
>> >>> at   
>> org.apache.wicket.ajax.markup.html.AjaxLink$1.onEvent(AjaxLink.java:65)
>> >>> at
>> >>>   
>> org.apache.wicket.ajax.AjaxEventBehavior.respond(AjaxEventBehavior.java:163)
>> >>> at
>> >>>   
>> org.apache.wicket.ajax.AbstractDefaultAjaxBehavior.onRequest(AbstractDefaultAjaxBehavior.java:297)
>> >>> at
>> >>>   
>> org.apache.wicket.request.target.component.listener.BehaviorRequestTarget.processEvents(BehaviorRequestTarget.java:104)
>> >>> at
>> >>>   
>> org.apache.wicket.request.AbstractRequestCycleProcessor.processEvents(AbstractRequestCycleProcessor.java:91)
>> >>> at
>> >>>   
>> org.apache.wicket.RequestCycle.processEventsAndRespond(RequestCycle.java:1239)
>> >>> at org.apache.wicket.RequestCycle.step(RequestCycle.java:1316) at
>> >>> org.apache.wicket.RequestCycle.steps(RequestCycle.java:1418) at
>> >>> org.apache.wicket.RequestCycle.request(RequestCycle.java:532) at
>> >>>   
>> org.apache.wicket.protocol.http.WicketFilter.doGet(WicketFilter.java:356)
>> >>> at
>> >>>   
>> org.apache.wicket.protocol.http.WicketServlet.doGet(WicketServlet.java:124)
>> >>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) at
>> >>> javax.servlet.http.HttpServlet.service(HttpServlet.java:717) at
>> >>>   
>> org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java:158)
>> >>> 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:875)
>> >>> at
>> >>>   
>> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:809)
>> >>> at
>> >>>   
>> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:571)
>> >>> at
>> >>>   
>> org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:501)
>> >>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:617) 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.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
>> >>> at
>> >>>   
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>> >>> at
>> >>>   
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:265)
>> >>> at
>> >>>   
>> org.acegisecurity.intercept.web.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:107)
>> >>> at
>> >>>   
>> org.acegisecurity.intercept.web.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:72)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>> >>> at
>> >>>   
>> org.acegisecurity.ui.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:124)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>> >>> at
>> >>>   
>> org.acegisecurity.providers.anonymous.AnonymousProcessingFilter.doFilter(AnonymousProcessingFilter.java:125)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>> >>> at
>> >>>   
>> org.acegisecurity.ui.rememberme.RememberMeProcessingFilter.doFilter(RememberMeProcessingFilter.java:142)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>> >>> at
>> >>>   
>> org.acegisecurity.wrapper.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:81)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>> >>> at
>> >>>   
>> org.acegisecurity.ui.AbstractProcessingFilter.doFilter(AbstractProcessingFilter.java:271)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>> >>> at   
>> org.acegisecurity.ui.logout.LogoutFilter.doFilter(LogoutFilter.java:110)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>> >>> at
>> >>>   
>> org.acegisecurity.context.HttpSessionContextIntegrationFilter.doFilter(HttpSessionContextIntegrationFilter.java:249)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:275)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterChainProxy.doFilter(FilterChainProxy.java:149)
>> >>> at
>> >>>   
>> org.acegisecurity.util.FilterToBeanProxy.doFilter(FilterToBeanProxy.java:98)
>> >>> at
>> >>>   
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>> >>> at
>> >>>   
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>> >>> at   
>> org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:73)  
>>  at
>> >>>   
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>> >>> at
>> >>>   
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>> >>> at
>> >>>   
>> org.geoserver.filters.ReverseProxyFilter.doFilter(ReverseProxyFilter.java:183)
>> >>> at
>> >>>   
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
>> >>> at
>> >>>   
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
>> >>> at org.geoserver.filters.GZIPFilter.doFilter(GZIPFilter.java:41) 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:233)
>> >>> at
>> >>>   
>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
>> >>> at
>> >>>   
>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
>> >>> at
>> >>>   
>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
>> >>> at
>> >>>   
>> org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:568)
>> >>> at
>> >>>   
>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
>> >>> at
>> >>>   
>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
>> >>> at
>> >>>   
>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
>> >>> at
>> >>>   
>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
>> >>> at   
>> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
>> >>> at java.lang.Thread.run(Thread.java:619) Caused by:
>> >>> java.lang.RuntimeException: java.io.IOException: Data store named
>> >>> reseau_hydro in workspace test_hydro not found at
>> >>>   
>> org.geotools.data.gen.PreGeneralizedFeatureSource.getSchema(PreGeneralizedFeatureSource.java:379)
>> >>> at
>> >>>   
>> org.geotools.data.gen.PreGeneralizedFeatureSource.getSchema(PreGeneralizedFeatureSource.java:73)
>> >>> at
>> >>>   
>> org.geoserver.catalog.CatalogBuilder.buildFeatureType(CatalogBuilder.java:341)
>> >>> at
>> >>>   
>> org.geoserver.catalog.CatalogBuilder.buildFeatureType(CatalogBuilder.java:324)
>> >>> at
>> >>>   
>> org.geoserver.web.data.layer.NewLayerPage.buildLayerInfo(NewLayerPage.java:198)
>> >>> ... 71 more Caused by: java.io.IOException: Data store named
>> >>> reseau_hydro in
>> >>> workspace test_hydro not found at
>> >>>   
>> org.geotools.data.gen.PreGeneralizedFeatureSource.dsNotFoundException(PreGeneralizedFeatureSource.java:112)
>> >>> at
>> >>>   
>> org.geotools.data.gen.PreGeneralizedFeatureSource.getBaseFeatureSource(PreGeneralizedFeatureSource.java:132)
>> >>> at
>> >>>   
>> org.geotools.data.gen.PreGeneralizedFeatureSource.getSchema(PreGeneralizedFeatureSource.java:353)
>> >>> ... 75 more
>> >>>
>> >>> And the same stack trace if i change the xml this way:
>> >>>
>> >>>
>> >>> &lt;?xml version="1.0" encoding="UTF-8"?>
>> >>>      &lt;GeneralizationInfos version="1.0">
>> >>>              &lt;GeneralizationInfo dataSourceNameSpace="test_hydro"
>> >>> dataSourceName="reseau_hydro_secondaire"
>> >>> featureName="reseau_hydro_secondaire_pre"
>> >>> baseFeatureName="reseau_hydro_secondaire" geomPropertyName="the_geom">
>> >>>                      &lt;Generalization distance="5"
>> >>> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom5"/>
>> >>>          &lt;Generalization distance="10" 
>> >>> featureName="reseau_hydro_secondaire"
>> >>> geomPropertyName="the_geom10"/>
>> >>>                      &lt;Generalization distance="20"
>> >>> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom20"/>
>> >>>                      &lt;Generalization distance="50"
>> >>> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom50"/>
>> >>>          &lt;Generalization distance="80" 
>> >>> featureName="reseau_hydro_secondaire"
>> >>> geomPropertyName="the_geom80"/>
>> >>>          &lt;Generalization distance="100"
>> >>> featureName="reseau_hydro_secondaire" geomPropertyName="the_geom100"/>
>> >>>              &lt;/GeneralizationInfo>
>> >>> &lt;/GeneralizationInfos>
>> >>>
>> >>>
>> >>> Where is my mistake?
>> >>>
>> >>> Thanks!
>> >>>
>> >>> Jo
>> >>> --
>> >>> View this message in context:
>> >>>   
>> http://old.nabble.com/New-postgis-feature-pregeneralized-tutorial-question-tp29079417p29242891.html
>> >>> Sent from the GeoServer - User mailing list archive at Nabble.com.
>> >>>
>> >>>
>> >>
>> >>
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>> >>
>> >>
>> >>   
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