josegar74 ha scritto: > Hi, > > I'm parsing a filter like this with geotools > > <ogc:Filter xmlns:ogc="http://www.opengis.net/ogc";> > <ogc:PropertyIsEqualTo> > <ogc:Literal>TRUE</ogc:Literal> > <ogc:Function name="During"> > ... > </ogc:Function> > </ogc:PropertyIsEqualTo> > </ogc:Filter> > > > using next code > > Parser parser; > > // create the parser with the filter 1.1 configuration > Configuration configuration = new > org.geotools.filter.v1_1.OGCConfiguration(); > > configuration.getProperties().add(Parser.Properties.PARSE_UNKNOWN_ELEMENTS); > > configuration.getProperties().add(Parser.Properties.PARSE_UNKNOWN_ATTRIBUTES); > > parser = new Parser(configuration); > > Filter filter = (Filter) parser.parse(data); > > but I'm getting the next Exception > > java.lang.RuntimeException: Parsing failed for Function: > java.lang.RuntimeException: Unable to find function During > at org.geotools.xml.impl.ParseExecutor.visit(ParseExecutor.java:158) > at > org.geotools.xml.impl.BindingWalker$BindingExecutionChain.execute(BindingWalker.java:208) > at org.geotools.xml.impl.BindingWalker.walk(BindingWalker.java:174) > at > org.geotools.xml.impl.ElementHandlerImpl.endElement(ElementHandlerImpl.java:222) > at > org.geotools.xml.impl.ParserHandler.endElement(ParserHandler.java:582) > at org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown > Source) > at > org.apache.xerces.impl.XMLNSDocumentScannerImpl.scanEndElement(Unknown > Source) > at > org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown > Source) > at > org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown > Source) > at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) > at org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source) > at org.apache.xerces.parsers.XMLParser.parse(Unknown Source) > at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source) > at org.geotools.xml.Parser.parse(Parser.java:180) > at org.geotools.xml.Parser.parse(Parser.java:140) > > > I think I have to implement a During class that extends > FunctionExpressionImpl, but the problem is ¿how to register this class in > geotools so parser doesnt fails?
You have to register it in the SPI. If you look in the gt-main module sources you'll see that in META-INF there is a text file that lists the functions contained in the main module. You have to do the same in your module, add a file in the same location, with the same name, but listing the names of your functions. See here: http://svn.osgeo.org/geotools/branches/2.5.x/modules/library/main/src/main/resources/META-INF/services/org.opengis.filter.expression.Function Cheers Andrea -- Andrea Aime OpenGeo - http://opengeo.org Expert service straight from the developers. ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Geotools-gt2-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/geotools-gt2-users
