Hi everyone,
First time posting here, thank you for your understanding if I am not
explaining my situation well.
I've been trying to use the built-in gs:Clip to extract some public layers
based on a polygon defined by coordinates. The process seemed to work well with
a couple of layers until I tried it with one particular layer.
Here's the xml in the POST request:
<?xml version="1.0" encoding="UTF-8"?><wps:Execute version="1.0.0"
service="WPS" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xmlns="http://www.opengis.net/wps/1.0.0"; xmlns:wfs="http://www.opengis.net/wfs";
xmlns:wps="http://www.opengis.net/wps/1.0.0";
xmlns:ows="http://www.opengis.net/ows/1.1";
xmlns:gml="http://www.opengis.net/gml"; xmlns:ogc="http://www.opengis.net/ogc";
xmlns:wcs="http://www.opengis.net/wcs/1.1.1";
xmlns:xlink="http://www.w3.org/1999/xlink";
xsi:schemaLocation="http://www.opengis.net/wps/1.0.0
http://schemas.opengis.net/wps/1.0.0/wpsAll.xsd";>
<ows:Identifier>gs:Clip</ows:Identifier>
<wps:DataInputs>
<wps:Input>
<ows:Identifier>features</ows:Identifier>
<wps:Reference mimeType="application/json"
xlink:href="http://openmaps.gov.bc.ca/geo/pub/ows?service=WFS&version=2.0.0&request=GetFeature&typeName=WHSE_CADASTRE.PMBC_PARCEL_FABRIC_POLY_SVW&outputFormat=json&bbox=715319.37219999917,1028613.3681000005,735025.99269999936,1041407.1950000003";
method="GET"/>
</wps:Input>
<wps:Input>
<ows:Identifier>clip</ows:Identifier>
<wps:Data>
<wps:ComplexData
mimeType="application/json"><![CDATA[{"type":"Polygon","coordinates":[[[715354.52820000052,1040603.9793999996],[715319.37219999917,1028613.3681000005],[734339.38680000044,1027297.6436000001],[735025.99269999936,1041407.1950000003],[715354.52820000052,1040603.9793999996]]]}]]></wps:ComplexData>
</wps:Data>
</wps:Input>
</wps:DataInputs>
<wps:ResponseForm>
<wps:RawDataOutput mimeType="application/json">
<ows:Identifier>result</ows:Identifier>
</wps:RawDataOutput>
</wps:ResponseForm>
</wps:Execute>
In this case, a TopologyException was thrown (the stack trace is attached in
the email):
org.locationtech.jts.geom.TopologyException: found non-noded intersection
between LINESTRING ( 737930.4267 1033205.5095, 737925.915 1033208.5901 ) and
LINESTRING ( 737933.8941 1033203.0284, 737930.4267 1033205.5095 ) [
(737930.4267, 1033205.5095, NaN) ]
I'm using Geoserver 2.20.2, GeoTools 26.2 and WPS 1.0.0.
I have searched about this issue and learned that this is caused by invalid
geometry which was explained here:
https://locationtech.github.io/jts/jts-faq.html#D1
Then I tried to create a customized WPS that 'clean' the input either using
buffer(0) or the GeometryFixer in JTS before sending it to the clip process but
neither of them solved the issue.
I have exhausted my solutions to this problem and I'm wondering if anyone have
encountered a similar issue before? May I have some suggestions about what to
look for next?
Thank you very much!
Regards,
Oscar
2022-03-23 12:34:11,744 ERROR [geoserver.ows] -
org.geoserver.wps.WPSException: An error occurred while encoding the results of
the process
at
org.geoserver.wps.response.ExecuteProcessResponse.writeComplex(ExecuteProcessResponse.java:232)
at
org.geoserver.wps.response.ExecuteProcessResponse.write(ExecuteProcessResponse.java:195)
at org.geoserver.ows.Dispatcher.response(Dispatcher.java:1020)
at
org.geoserver.ows.Dispatcher.handleRequestInternal(Dispatcher.java:275)
at
org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177)
at
org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:52)
at
org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
at
org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
at
org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
at
org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
at
org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at
org.eclipse.jetty.servlet.ServletHolder$NotAsync.service(ServletHolder.java:1452)
at
org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:791)
at
org.eclipse.jetty.servlet.ServletHandler$ChainEnd.doFilter(ServletHandler.java:1626)
at
org.geoserver.filters.ThreadLocalsCleanupFilter.doFilter(ThreadLocalsCleanupFilter.java:28)
at
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at
org.geoserver.filters.SpringDelegatingFilter$Chain.doFilter(SpringDelegatingFilter.java:73)
at
org.geoserver.ows.HTTPHeadersCollector.doFilter(HTTPHeadersCollector.java:48)
at
org.geoserver.filters.SpringDelegatingFilter$Chain.doFilter(SpringDelegatingFilter.java:70)
at
org.geoserver.filters.SpringDelegatingFilter.doFilter(SpringDelegatingFilter.java:43)
at
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at
org.geoserver.platform.AdvancedDispatchFilter.doFilter(AdvancedDispatchFilter.java:39)
at
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320)
at
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:71)
at
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
at
org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
at
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:75)
at
org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:92)
at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:71)
at
org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119)
at
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:75)
at
org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:92)
at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at
org.geoserver.security.filter.GeoServerAnonymousAuthenticationFilter.doFilter(GeoServerAnonymousAuthenticationFilter.java:53)
at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:71)
at
org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:158)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:75)
at
org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:92)
at
org.geoserver.security.filter.GeoServerBasicAuthenticationFilter.doFilter(GeoServerBasicAuthenticationFilter.java:81)
at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:71)
at
org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
at
org.geoserver.security.filter.GeoServerSecurityContextPersistenceFilter$1.doFilter(GeoServerSecurityContextPersistenceFilter.java:52)
at
org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:75)
at
org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:92)
at
org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
at
org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215)
at
org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
at
org.geoserver.security.GeoServerSecurityFilterChainProxy.doFilter(GeoServerSecurityFilterChainProxy.java:142)
at
org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358)
at
org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271)
at
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:102)
at
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at
org.geoserver.filters.XFrameOptionsFilter.doFilter(XFrameOptionsFilter.java:77)
at
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at org.geoserver.filters.GZIPFilter.doFilter(GZIPFilter.java:54)
at
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at
org.geoserver.filters.SessionDebugFilter.doFilter(SessionDebugFilter.java:49)
at
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at
org.geoserver.filters.FlushSafeFilter.doFilter(FlushSafeFilter.java:42)
at
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:193)
at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at
org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
at
org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
at
org.eclipse.jetty.servlet.FilterHolder.doFilter(FilterHolder.java:201)
at
org.eclipse.jetty.servlet.ServletHandler$Chain.doFilter(ServletHandler.java:1601)
at
org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:548)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at
org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:602)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:235)
at
org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:1624)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextHandle(ScopedHandler.java:233)
at
org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1435)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:188)
at
org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:501)
at
org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:1594)
at
org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:186)
at
org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1350)
at
org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at
org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:191)
at
org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146)
at
org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127)
at org.eclipse.jetty.server.Server.handle(Server.java:516)
at
org.eclipse.jetty.server.HttpChannel.lambda$handle$1(HttpChannel.java:388)
at org.eclipse.jetty.server.HttpChannel.dispatch(HttpChannel.java:633)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:380)
at
org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:273)
at
org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:105)
at org.eclipse.jetty.io.ChannelEndPoint$1.run(ChannelEndPoint.java:104)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.runTask(EatWhatYouKill.java:336)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.doProduce(EatWhatYouKill.java:313)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.tryProduce(EatWhatYouKill.java:171)
at
org.eclipse.jetty.util.thread.strategy.EatWhatYouKill.run(EatWhatYouKill.java:129)
at
org.eclipse.jetty.util.thread.ReservedThreadExecutor$ReservedThread.run(ReservedThreadExecutor.java:375)
at
org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:773)
at
org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:905)
at java.lang.Thread.run(Unknown Source)
Caused by: org.locationtech.jts.geom.TopologyException: found non-noded
intersection between LINESTRING ( 737930.4267 1033205.5095, 737925.915
1033208.5901 ) and LINESTRING ( 737933.8941 1033203.0284, 737930.4267
1033205.5095 ) [ (737930.4267, 1033205.5095, NaN) ]
at
org.locationtech.jts.noding.FastNodingValidator.checkValid(FastNodingValidator.java:139)
at
org.locationtech.jts.geomgraph.EdgeNodingValidator.checkValid(EdgeNodingValidator.java:80)
at
org.locationtech.jts.geomgraph.EdgeNodingValidator.checkValid(EdgeNodingValidator.java:45)
at
org.locationtech.jts.operation.overlay.OverlayOp.computeOverlay(OverlayOp.java:229)
at
org.locationtech.jts.operation.overlay.OverlayOp.getResultGeometry(OverlayOp.java:181)
at
org.locationtech.jts.operation.overlay.OverlayOp.overlayOp(OverlayOp.java:84)
at
org.locationtech.jts.operation.overlay.snap.SnapIfNeededOverlayOp.getResultGeometry(SnapIfNeededOverlayOp.java:75)
at
org.locationtech.jts.operation.overlay.snap.SnapIfNeededOverlayOp.overlayOp(SnapIfNeededOverlayOp.java:37)
at
org.locationtech.jts.geom.GeometryOverlay.overlay(GeometryOverlay.java:76)
at
org.locationtech.jts.geom.GeometryOverlay.intersection(GeometryOverlay.java:119)
at org.locationtech.jts.geom.Geometry.intersection(Geometry.java:1330)
at
org.geotools.feature.collection.ClippedFeatureIterator.clipGeometry(ClippedFeatureIterator.java:159)
at
org.geotools.feature.collection.ClippedFeatureIterator.prepareBuilderForNextFeature(ClippedFeatureIterator.java:125)
at
org.geotools.feature.collection.ClippedFeatureIterator.hasNext(ClippedFeatureIterator.java:106)
at
org.geotools.geojson.feature.FeatureJSON$FeatureCollectionEncoder.writeJSONString(FeatureJSON.java:658)
at org.json.simple.JSONValue.writeJSONString(JSONValue.java:135)
at org.json.simple.JSONObject.writeJSONString(JSONObject.java:67)
at org.geotools.geojson.GeoJSONUtil.encode(GeoJSONUtil.java:297)
at
org.geotools.geojson.feature.FeatureJSON.writeFeatureCollection(FeatureJSON.java:307)
at
org.geotools.geojson.feature.FeatureJSON.writeFeatureCollection(FeatureJSON.java:338)
at
org.geoserver.wps.ppio.GeoJSONPPIO$FeatureCollections.encode(GeoJSONPPIO.java:67)
at
org.geoserver.wps.CDataEncoderDelegate.encode(CDataEncoderDelegate.java:45)
at
org.geoserver.wps.response.ExecuteProcessResponse.writeComplex(ExecuteProcessResponse.java:230)
... 113 more_______________________________________________
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