[Geoserver-users] WFS filter with GEOMETRYCOLLECTION

GeoServer GeoServer User
1

Hi,
I’m trying to get some data via a WFS getFeature request using a CQL filter. Because there are mutliple polygons I’m trying to use the GEOMETRYCOLLECTION type, though it’s kind of difficult because I don’t seem to be able to find much documentation on it.

Anyway, I start by testing one polygon and try I try the following query:

[http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((52.851417541503906](http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((52.851417541503906) -3.413439273834228, … lots of co-ords here … 52.851417541503906 -3.413439273834228))))

and it returns with this error:

<ows:Exception exceptionCode=“NoApplicableCode”>
−
ows:ExceptionText
java.lang.ClassCastException: org.geotools.filter.AttributeExpressionImpl cannot be cast to org.opengis.filter.Filter
org.geotools.filter.AttributeExpressionImpl cannot be cast to org.opengis.filter.Filter
</ows:ExceptionText>
</ows:Exception>

I’m guessing because there’s only one polygon in there. To confirm my polygon was fine I removed the GEOMETRYCOLLECTION part (and associated set of brackets) leaving just the POLYGON and it worked fine. So I add another polygon to the original GEOMETRYCOLLECTION query and end up with this (full) URL - whitespace around the second “POLYGON” added to ease readability, it’s not there in the real URL:

[http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((53.08063507080078](http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((53.08063507080078) -3.30979323387146,53.08063507080078 -3.30979323387146,53.08061599731445 -3.2939405441284175,53.08058547973633 -3.2701609134674072,53.08052062988281 -3.2305266857147217,53.070770263671875 -3.1037306785583496,53.046566009521484 -2.95328688621521,52.4075927734375 -1.848714828491211,52.35076522827149 -1.8823108673095703,52.29383087158203 -1.9079525470733645,52.242000579833984 -1.9569034576416016,52.185508728027344 -2.0137128829956055,52.09197235107422 -2.1573872566223145,52.02230453491211 -2.315004587173462,51.97622299194336 -2.4712541103363037,51.968429565429695 -2.6575467586517334,51.98407745361328 -2.827788114547729,52.023231506347656 -2.9976468086242676,52.090553283691406 -3.1596114635467534,52.17179870605469 -3.3140738010406494,52.26703643798828 -3.5,52.376060485839844 -3.7101228237152095,52.49436950683593 -3.905970573425293,52.55587387084961 -3.992657423019409,52.612648010253906 -4.071794509887695,52.65527725219727 -4.1195454597473145,52.740592956542976 -4.19959020614624,52.80240631103516 -4.224368572235107,52.864402770996094 -4.225588798522949,52.91707611083985 -4.195035457611084,52.96981430053711 -4.148535251617432,53.00823211669922 -4.09372615814209,53.04185104370117 -4.038740158081055,53.06583023071288 -4.007350444793701,53.075428009033196 -3.9916074275970455,53.075428009033196 -3.9916074275970455,53.08063507080078 -3.30979323387146)), POLYGON ((52.13802719116211 -3.7055177688598633,52.13802719116211 -3.7055177688598633,52.138004302978516 -3.713274955749512,52.13794708251953 -3.736554622650147,52.03199005126954 -4.045796871185303,52.02721786499023 -4.045754909515381,52.012889862060554 -4.045632839202881,51.99382781982422 -4.037724494934082,51.97480010986328 -4.022078990936279,51.96532440185546 -4.006518840789795,51.95106506347656 -3.9909276962280273,51.93684387207032 -3.967607975006103,51.92261505126953 -3.9443008899688725,51.908382415771484 -3.921006202697754,51.89892196655274 -3.8977537155151367,51.884742736816406 -3.8590288162231445,51.87533187866211 -3.8203506469726567,51.87541580200195 -3.7971787452697754,51.8707160949707 -3.773988723754883,51.86603546142578 -3.7430832386016846,51.86617660522461 -3.696762800216675,51.87105941772461 -3.6581809520721436,51.885459899902344 -3.6273396015167236,51.899818420410156 -3.60421085357666,51.91896438598633 -3.5887959003448486,51.93809127807618 -3.565650463104248,51.9620018005371 -3.5502195358276367,51.985904693603516 -3.5425062179565425,52.014556884765625 -3.5425233840942383,52.03363037109374 -3.542536973953247,52.05265808105469 -3.542555332183838,52.06217575073242 -3.5425641536712646,52.076438903808594 -3.5503201484680176,52.0811882019043 -3.5580689907073975,52.090694427490234 -3.565826892852783,52.09544372558593 -3.573580503463745,52.10020065307617 -3.5735883712768555,52.10018920898437 -3.581336259841919,52.10018920898437 -3.581336259841919,52.13802719116211 -3.7055177688598633))))

I get a similar, but not identical error returned in the web-browser:

<ows:Exception exceptionCode=“NoApplicableCode”>
−
ows:ExceptionText
java.lang.ClassCastException: org.geotools.filter.LiteralExpressionImpl cannot be cast to org.opengis.filter.Filter
org.geotools.filter.LiteralExpressionImpl cannot be cast to org.opengis.filter.Filter
</ows:ExceptionText>
</ows:Exception>

There is also a new entry in the geoserver.log file:

2009-06-26 12:37:35,671 INFO [geoserver.wfs] -
Request: getServiceInfo
2009-06-26 12:37:35,671 ERROR [geoserver.ows] -
java.lang.ClassCastException: org.geotools.filter.LiteralExpressionImpl cannot be cast to org.opengis.filter.Filter
at org.geotools.filter.text.commons.AbstractFilterBuilder.getFilterList(AbstractFilterBuilder.java:131)
at org.geotools.filter.text.cql2.CQLCompiler.getFilterList(CQLCompiler.java:171)
at org.geotools.filter.text.commons.CompilerUtil.parseFilterList(CompilerUtil.java:214)
at org.geotools.filter.text.cql2.CQL.toFilterList(CQL.java:235)
at org.geotools.filter.text.cql2.CQL.toFilterList(CQL.java:186)
at org.geoserver.wfs.kvp.CQLFilterKvpParser.parse(CQLFilterKvpParser.java:26)
at org.geoserver.ows.util.KvpUtils.parse(KvpUtils.java:471)
at org.geoserver.ows.Dispatcher.parseKVP(Dispatcher.java:1069)
at org.geoserver.ows.Dispatcher.init(Dispatcher.java:246)
at org.geoserver.ows.Dispatcher.handleRequestInternal(Dispatcher.java:192)
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: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$CachedChain.doFilter(ServletHandler.java:1093)
at org.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
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.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:174)
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.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:73)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at org.geoserver.filters.ReverseProxyFilter.doFilter(ReverseProxyFilter.java:163)
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.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.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
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$RequestHandler.headerComplete(HttpConnection.java:828)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)

Can anyone decipher the error messages I’m getting? Is it a bug in geoserver or am I using GEOMETRYCOLLECTION wrong?

Thanks,
Jonathan

2

Hi Jonathan,

Looks like a possible bug in the CQL parser, can you open a bug report with the sample request. If you can provide a request that replicates the issue with a layer that geoserver can serve out of the box (states for instance) it would help as well.

Also, the reason for using the geometry collection is to be able to filter against multiple polygons? You could try an OR clause in your filter. Or back out to using XML based filters, which might have better support for parsing geometry collections.

-Justin

Jonathan Moules wrote:

Hi,
I'm trying to get some data via a WFS getFeature request using a CQL filter. Because there are mutliple polygons I'm trying to use the GEOMETRYCOLLECTION type, though it's kind of difficult because I don't seem to be able to find much documentation on it.
Anyway, I start by testing one polygon and try I try the following query:
http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((52.851417541503906 -3.413439273834228, ... lots of co-ords here ... 52.851417541503906 -3.413439273834228))))
and it returns with this error:
<ows:Exception exceptionCode="NoApplicableCode">
−
<ows:ExceptionText>
java.lang.ClassCastException: org.geotools.filter.AttributeExpressionImpl cannot be cast to org.opengis.filter.Filter
org.geotools.filter.AttributeExpressionImpl cannot be cast to org.opengis.filter.Filter
</ows:ExceptionText>
</ows:Exception>

http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((53.08063507080078 -3.30979323387146,53.08063507080078 -3.30979323387146,53.08061599731445 -3.2939405441284175,53.08058547973633 -3.2701609134674072,53.08052062988281 -3.2305266857147217,53.070770263671875 -3.1037306785583496,53.046566009521484 -2.95328688621521,52.4075927734375 -1.848714828491211,52.35076522827149 -1.8823108673095703,52.29383087158203 -1.9079525470733645,52.242000579833984 -1.9569034576416016,52.185508728027344 -2.0137128829956055,52.09197235107422 -2.1573872566223145,52.02230453491211 -2.315004587173462,51.97622299194336 -2.4712541103363037,51.968429565429695 -2.6575467586517334,51.98407745361328 -2.827788114547729,52.023231506347656 -2.9976468086242676,52.090553283691406 -3.1596114635467534,52.17179870605469 -3.3140738010406494,52.26703643798828 -3.5,52.376060485839844 -3.7101228237152095,52.49436950683593 -3.905970573425293,52.55587387084961 -3.992657423019409,52.612648010253906 -4.071794509887695,52.65527725219727 -4.1195454597473145,52.740592956542976 -4.19959020614624,52.80240631103516 -4.224368572235107,52.864402770996094 -4.225588798522949,52.91707611083985 -4.195035457611084,52.96981430053711 -4.148535251617432,53.00823211669922 -4.09372615814209,53.04185104370117 -4.038740158081055,53.06583023071288 -4.007350444793701,53.075428009033196 -3.9916074275970455,53.075428009033196 -3.9916074275970455,53.08063507080078 -3.30979323387146)), POLYGON ((52.13802719116211 -3.7055177688598633,52.13802719116211 -3.7055177688598633,52.138004302978516 -3.713274955749512,52.13794708251953 -3.736554622650147,52.03199005126954 -4.045796871185303,52.02721786499023 -4.045754909515381,52.012889862060554 -4.045632839202881,51.99382781982422 -4.037724494934082,51.97480010986328 -4.022078990936279,51.96532440185546 -4.006518840789795,51.95106506347656 -3.9909276962280273,51.93684387207032 -3.967607975006103,51.92261505126953 -3.9443008899688725,51.908382415771484 -3.921006202697754,51.89892196655274 -3.8977537155151367,51.884742736816406 -3.8590288162231445,51.87533187866211 -3.8203506469726567,51.87541580200195 -3.7971787452697754,51.8707160949707 -3.773988723754883,51.86603546142578 -3.7430832386016846,51.86617660522461 -3.696762800216675,51.87105941772461 -3.6581809520721436,51.885459899902344 -3.6273396015167236,51.899818420410156 -3.60421085357666,51.91896438598633 -3.5887959003448486,51.93809127807618 -3.565650463104248,51.9620018005371 -3.5502195358276367,51.985904693603516 -3.5425062179565425,52.014556884765625 -3.5425233840942383,52.03363037109374 -3.542536973953247,52.05265808105469 -3.542555332183838,52.06217575073242 -3.5425641536712646,52.076438903808594 -3.5503201484680176,52.0811882019043 -3.5580689907073975,52.090694427490234 -3.565826892852783,52.09544372558593 -3.573580503463745,52.10020065307617 -3.5735883712768555,52.10018920898437 -3.581336259841919,52.10018920898437 -3.581336259841919,52.13802719116211 -3.7055177688598633))))
I get a similar, but not identical error returned in the web-browser:
<ows:Exception exceptionCode="NoApplicableCode">
−
<ows:ExceptionText>
java.lang.ClassCastException: org.geotools.filter.LiteralExpressionImpl cannot be cast to org.opengis.filter.Filter
org.geotools.filter.LiteralExpressionImpl cannot be cast to org.opengis.filter.Filter
</ows:ExceptionText>
</ows:Exception>
There is also a new entry in the geoserver.log file:
2009-06-26 12:37:35,671 INFO [geoserver.wfs] -
Request: getServiceInfo
2009-06-26 12:37:35,671 ERROR [geoserver.ows] -
java.lang.ClassCastException: org.geotools.filter.LiteralExpressionImpl cannot be cast to org.opengis.filter.Filter
at org.geotools.filter.text.commons.AbstractFilterBuilder.getFilterList(AbstractFilterBuilder.java:131)
at org.geotools.filter.text.cql2.CQLCompiler.getFilterList(CQLCompiler.java:171)
at org.geotools.filter.text.commons.CompilerUtil.parseFilterList(CompilerUtil.java:214)
at org.geotools.filter.text.cql2.CQL.toFilterList(CQL.java:235)
at org.geotools.filter.text.cql2.CQL.toFilterList(CQL.java:186)
at org.geoserver.wfs.kvp.CQLFilterKvpParser.parse(CQLFilterKvpParser.java:26)
at org.geoserver.ows.util.KvpUtils.parse(KvpUtils.java:471)
at org.geoserver.ows.Dispatcher.parseKVP(Dispatcher.java:1069)
at org.geoserver.ows.Dispatcher.init(Dispatcher.java:246)
at org.geoserver.ows.Dispatcher.handleRequestInternal(Dispatcher.java:192)
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: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$CachedChain.doFilter(ServletHandler.java:1093)
at org.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
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.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:174)
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.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:73)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at org.geoserver.filters.ReverseProxyFilter.doFilter(ReverseProxyFilter.java:163)
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.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.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
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$RequestHandler.headerComplete(HttpConnection.java:828)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
Can anyone decipher the error messages I'm getting? Is it a bug in geoserver or am I using GEOMETRYCOLLECTION wrong?
Thanks,
Jonathan

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--
Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.

3

Hi Justin,
I’ve reported it now (# 3202). I’m afraid I couldn’t replicate it with any of the pre-supplied layers because I don’t have a clue about their data-structures (necessary to alter the CQL statement).

You could try an OR clause in your filter.
From the little I could find, GEOMETRYCOLLECTION is supposed to use commas as delimiters between polygons, not ands/ors. Though if you mean not use GEOMETRYCOLLECTION but instead use a collection of POLYGONS with OR between, that may work. I’ve stripped the multi-polygon functionality from this version of my program so it’s not important to me at present. Thanks for the suggestion though.

Jonathan

2009/6/27 Justin Deoliveira <jdeolive@anonymised.com>

Hi Jonathan,

Looks like a possible bug in the CQL parser, can you open a bug report with the sample request. If you can provide a request that replicates the issue with a layer that geoserver can serve out of the box (states for instance) it would help as well.

Also, the reason for using the geometry collection is to be able to filter against multiple polygons? You could try an OR clause in your filter. Or back out to using XML based filters, which might have better support for parsing geometry collections.

-Justin

Jonathan Moules wrote:

Hi,
I’m trying to get some data via a WFS getFeature request using a CQL filter. Because there are mutliple polygons I’m trying to use the GEOMETRYCOLLECTION type, though it’s kind of difficult because I don’t seem to be able to find much documentation on it.
Anyway, I start by testing one polygon and try I try the following query:

[http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((52.851417541503906](http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((52.851417541503906) <[http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((52.851417541503906](http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((52.851417541503906)> -3.413439273834228, … lots of co-ords here … 52.851417541503906 -3.413439273834228))))

and it returns with this error:
<ows:Exception exceptionCode=“NoApplicableCode”>
−
ows:ExceptionText
java.lang.ClassCastException: org.geotools.filter.AttributeExpressionImpl cannot be cast to org.opengis.filter.Filter
org.geotools.filter.AttributeExpressionImpl cannot be cast to org.opengis.filter.Filter
</ows:ExceptionText>
</ows:Exception>
I’m guessing because there’s only one polygon in there. To confirm my polygon was fine I removed the GEOMETRYCOLLECTION part (and associated set of brackets) leaving just the POLYGON and it worked fine. So I add another polygon to the original GEOMETRYCOLLECTION query and end up with this (full) URL - whitespace around the second “POLYGON” added to ease readability, it’s not there in the real URL:

[http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((53.08063507080078](http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((53.08063507080078) <[http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((53.08063507080078](http://localhost:8080/geoserver/wfs?request=getfeature&service=wfs&version=1.1.0&typename=woodland_geometry&outputFormat=GML2&cql_filter=WITHIN(the_geom_data,GEOMETRYCOLLECTION(POLYGON((53.08063507080078)> -3.30979323387146,53.08063507080078 -3.30979323387146,53.08061599731445 -3.2939405441284175,53.08058547973633 -3.2701609134674072,53.08052062988281 -3.2305266857147217,53.070770263671875 -3.1037306785583496,53.046566009521484 -2.95328688621521,52.4075927734375 -1.848714828491211,52.35076522827149 -1.8823108673095703,52.29383087158203 -1.9079525470733645,52.242000579833984 -1.9569034576416016,52.185508728027344 -2.0137128829956055,52.09197235107422 -2.1573872566223145,52.02230453491211 -2.315004587173462,51.97622299194336 -2.4712541103363037,51.968429565429695 -2.6575467586517334,51.98407745361328 -2.827788114547729,52.023231506347656 -2.9976468086242676,52.090553283691406 -3.1596114635467534,52.17179870605469 -3.3140738010406494,52.26703643798828 -3.5,52.376060485839844 -3.7101228237152095,52.49436950683593 -3.905970573425293,52.55587387084961 -3.992657423019409,52.612648010253906 -4.071794509887695,52.65527725219727 -4.1195454597473145,52.740592956542976 -4.19959020614624,52.80240631103516 -4.224368572235107,52.864402770996094 -4.225588798522949,52.91707611083985 -4.195035457611084,52.96981430053711 -4.148535251617432,53.00823211669922 -4.09372615814209,53.04185104370117 -4.038740158081055,53.06583023071288 -4.007350444793701,53.075428009033196 -3.9916074275970455,53.075428009033196 -3.9916074275970455,53.08063507080078 -3.30979323387146)), POLYGON ((52.13802719116211 -3.7055177688598633,52.13802719116211 -3.7055177688598633,52.138004302978516 -3.713274955749512,52.13794708251953 -3.736554622650147,52.03199005126954 -4.045796871185303,52.02721786499023 -4.045754909515381,52.012889862060554 -4.045632839202881,51.99382781982422 -4.037724494934082,51.97480010986328 -4.022078990936279,51.96532440185546 -4.006518840789795,51.95106506347656 -3.9909276962280273,51.93684387207032 -3.967607975006103,51.92261505126953 -3.9443008899688725,51.908382415771484 -3.921006202697754,51.89892196655274 -3.8977537155151367,51.884742736816406 -3.8590288162231445,51.87533187866211 -3.8203506469726567,51.87541580200195 -3.7971787452697754,51.8707160949707 -3.773988723754883,51.86603546142578 -3.7430832386016846,51.86617660522461 -3.696762800216675,51.87105941772461 -3.6581809520721436,51.885459899902344 -3.6273396015167236,51.899818420410156 -3.60421085357666,51.91896438598633 -3.5887959003448486,51.93809127807618 -3.565650463104248,51.9620018005371 -3.5502195358276367,51.985904693603516 -3.5425062179565425,52.014556884765625 -3.5425233840942383,52.03363037109374 -3.542536973953247,52.05265808105469 -3.542555332183838,52.06217575073242 -3.5425641536712646,52.076438903808594 -3.5503201484680176,52.0811882019043 -3.5580689907073975,52.090694427490234 -3.565826892852783,52.09544372558593 -3.573580503463745,52.10020065307617 -3.5735883712768555,52.10018920898437 -3.581336259841919,52.10018920898437 -3.581336259841919,52.13802719116211 -3.7055177688598633))))

I get a similar, but not identical error returned in the web-browser:
<ows:Exception exceptionCode=“NoApplicableCode”>
−
ows:ExceptionText
java.lang.ClassCastException: org.geotools.filter.LiteralExpressionImpl cannot be cast to org.opengis.filter.Filter
org.geotools.filter.LiteralExpressionImpl cannot be cast to org.opengis.filter.Filter
</ows:ExceptionText>
</ows:Exception>
There is also a new entry in the geoserver.log file:
2009-06-26 12:37:35,671 INFO [geoserver.wfs] -
Request: getServiceInfo
2009-06-26 12:37:35,671 ERROR [geoserver.ows] -
java.lang.ClassCastException: org.geotools.filter.LiteralExpressionImpl cannot be cast to org.opengis.filter.Filter
at org.geotools.filter.text.commons.AbstractFilterBuilder.getFilterList(AbstractFilterBuilder.java:131)
at org.geotools.filter.text.cql2.CQLCompiler.getFilterList(CQLCompiler.java:171)
at org.geotools.filter.text.commons.CompilerUtil.parseFilterList(CompilerUtil.java:214)
at org.geotools.filter.text.cql2.CQL.toFilterList(CQL.java:235)
at org.geotools.filter.text.cql2.CQL.toFilterList(CQL.java:186)
at org.geoserver.wfs.kvp.CQLFilterKvpParser.parse(CQLFilterKvpParser.java:26)
at org.geoserver.ows.util.KvpUtils.parse(KvpUtils.java:471)
at org.geoserver.ows.Dispatcher.parseKVP(Dispatcher.java:1069)
at org.geoserver.ows.Dispatcher.init(Dispatcher.java:246)
at org.geoserver.ows.Dispatcher.handleRequestInternal(Dispatcher.java:192)
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: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$CachedChain.doFilter(ServletHandler.java:1093)
at org.vfny.geoserver.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
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.basicauth.BasicProcessingFilter.doFilter(BasicProcessingFilter.java:174)
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.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:73)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
at org.geoserver.filters.ReverseProxyFilter.doFilter(ReverseProxyFilter.java:163)
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.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.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
at org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
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$RequestHandler.headerComplete(HttpConnection.java:828)
at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
at org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
at org.mortbay.thread.BoundedThreadPool$PoolThread.run(BoundedThreadPool.java:450)
Can anyone decipher the error messages I’m getting? Is it a bug in geoserver or am I using GEOMETRYCOLLECTION wrong?
Thanks,
Jonathan

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–
Justin Deoliveira
OpenGeo - http://opengeo.org
Enterprise support for open source geospatial.