[Re-sending to the list with Brett's agreement.] Brett,
in answer to your first question, I suspect that this is an app-schema bug. I think that gml:id was envisaged as an opaque handle, and your use-case (PropertyIsLike on gml:id) was not anticipated. However, I can see nothing in the spec that makes your filter invalid (but I'm not an expert). In answer to your second question, the app-schema module has been formally promoted to supported extension status and moved to: http://svn.osgeo.org/geotools/trunk/modules/extension/app-schema/ Kind regards, Ben. On 10/04/12 11:31, Brett Walker wrote: > Hi Ben, > > I think I have found another bug in App Schema. I just want to confirm that > it is one. I could be doing something wrong. > > I’m trying to apply a OGC filter to the following representative portion of > XML data > > <wfs:FeatureCollection> > <gml:featureMember> > <iso19112:SI_LocationType gml:id="featureClass.1"> > <iso19112:name>Administration</iso19112:name> > <iso19112:identification>featureClass.1</iso19112:identification> > <iso19112:definition>Administration</iso19112:definition> > </iso19112:SI_LocationType> > </gml:featureMember> > <gml:featureMember> > <iso19112:SI_LocationType gml:id="featureType.SND"> > <iso19112:name>Sound</iso19112:name> > <iso19112:identification>featureType.SND</iso19112:identification> > <iso19112:definition>Sound</iso19112:definition> > </iso19112:SI_LocationType> > </gml:featureMember> > <gml:featureMember> > <iso19112:SI_LocationType gml:id="state.WA"> > <iso19112:name>Western Australia</iso19112:name> > <iso19112:identification>state.WA</iso19112:identification> > <iso19112:definition>Western Australia</iso19112:definition> > </iso19112:SI_LocationType> > </gml:featureMember> > </wfs:FeatureCollection> > > The filter being applied is > > <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc";> > <ogc:PropertyIsLike wildCard="%" singleChar="#" escapeChar="\"> > <ogc:PropertyName>iso19112:SI_LocationType/@gml:id</ogc:PropertyName> > <ogc:Literal>state.%</ogc:Literal> > </ogc:PropertyIsLike> > </ogc:Filter> > > I’m trying to return only the feature members that have the gml:id attribute > of the iso19112:SI_LocationType element starting with state. But I’m getting > a stack trace on the console: > > java.lang.IllegalArgumentException: Can't find source expression for: > iso19112:SI_LocationType/@gml:id > at > org.geotools.data.complex.filter.UnmappingFilterVisitor.visit(UnmappingFilterVisitor.java:828) > at > org.geotools.filter.AttributeExpressionImpl.accept(AttributeExpressionImpl.java:380) > at > org.geotools.data.complex.filter.UnmappingFilterVisitor.visit(UnmappingFilterVisitor.java:484) > at org.geotools.filter.LikeFilterImpl.accept(LikeFilterImpl.java:614) > at > org.geotools.data.complex.AppSchemaDataAccess.unrollFilter(AppSchemaDataAccess.java:403) > at > org.geotools.data.complex.AppSchemaDataAccess.unrollQuery(AppSchemaDataAccess.java:310) > at > org.geotools.data.complex.MappingFeatureIteratorFactory.getInstance(MappingFeatureIteratorFactory.java:49) > at > org.geotools.data.complex.MappingFeatureCollection.iterator(MappingFeatureCollection.java:235) > at org.geotools.xml.Encoder.encode(Encoder.java:1003) > at org.geotools.xml.Encoder.encode(Encoder.java:566) > at > org.geoserver.wfs.xml.GML3OutputFormat.encode(GML3OutputFormat.java:256) > at > org.geoserver.wfs.xml.GML3OutputFormat.complexFeatureStreamIntercept(GML3OutputFormat.java:274) > at > org.geoserver.wfs.xml.GML3OutputFormat.write(GML3OutputFormat.java:242) > at > org.geoserver.wfs.WFSGetFeatureOutputFormat.write(WFSGetFeatureOutputFormat.java:141) > at org.geoserver.ows.Dispatcher.response(Dispatcher.java:751) > at > org.geoserver.ows.Dispatcher.handleRequestInternal(Dispatcher.java:238) > 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:621) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:722) > … > > > It seems that the > UnmappingFilterVisitor.visit(UnmappingFilterVisitor.java:828) cannot handle a > filter being applied to attributes of the root element; in this case > iso19112:SI_LocationType. > > I have looked through the code, > UnmappingFilterVisitor.findMappingFor(UnmappingFilterVisitor.java:848) seems > to return an empty list of Expressions. Even the last check (870 - 889) seems > not to consider the case. > > Have I applied the filter incorrectly or is this a bug in App Schema? > > An aside, I have noticed that the SVN repository for App Schema at > http://svn.osgeo.org/geotools/trunk/modules/unsupported/app-schema/ is > missing the app-schema sub-directory. It only includes the webservice > directory. Is the future direction of app-schema changing? Where can I get > the trunk code for app-schema? > > Brett > > Brett Walker<[email protected]<mailto:[email protected]>> > Software Developer / Analyst > Geometry Pty Ltd > > Telephone 03 6223 1999 > Mobile 0458 498 386 > Fax 03 6223 1988 > Web www.geometryit.com<http://www.geometryit.com/> > Address 31 Salamanca Square, Battery Point, TAS 7004, > Australia > > -- Ben Caradoc-Davies <[email protected]> Software Engineer CSIRO Earth Science and Resource Engineering Australian Resources Research Centre ------------------------------------------------------------------------------ Better than sec? Nothing is better than sec when it comes to monitoring Big Data applications. Try Boundary one-second resolution app monitoring today. Free. http://p.sf.net/sfu/Boundary-dev2dev _______________________________________________ Geoserver-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geoserver-users
