Hi Jon:
You will need to send email to the user list; the company I work for actually
offers developer support (allowing me to respond promptly by email). If you are
interested you can visit http://lisasoft.com/ for the details.
That is really good you are getting the parser to work.
I did not actually find the exception message helpful and would need to look at
that section of code. I recommend putting a breakpoint in there and stepping
through with the debugger to see if you can determine why the error is
occurring.
--
Jody Garnett
On Wednesday, 15 June 2011 at 12:14 AM, Jon Britton wrote:
> Hi Jody,
>
> I saw some code using GMLConfiguration and Parser, which I've tried to adapt
> to my problem (code below). However, it fails at
> newDataStore.createSchema(fc.getSchema()) and produces a java.io.IOException
> (shown in full below). It seems to have read in the GML ok, which is a start.
> Any help would be appreciated. Cheers, Jon.
>
> CODE:
>
> URL url = new URL(dataUrl);
> InputStream in = url.openStream();
>
> GMLConfiguration config = new GMLConfiguration();
> Parser parser = new Parser(config);
> DefaultFeatureCollection fc = (DefaultFeatureCollection) parser
> .parse(in);
>
> // Create random name
> Random rand = new Random();
> String fileName = Long.toString(Math.abs(rand.nextLong()), 36);
>
> File file = new File(getServletContext().getRealPath("WEB-INF")
> + ""/tempfiles/" + fileName + ".shp");
>
> ShapefileDataStoreFactory dataStoreFactory = new ShapefileDataStoreFactory();
> Map<String, Serializable> params = new HashMap<String, Serializable>();
> params.put("url", file.toURI().toURL());
> params.put("create spatial index", Boolean.TRUE);
>
> ShapefileDataStore newDataStore = (ShapefileDataStore) dataStoreFactory
> .createNewDataStore(params);
> newDataStore.createSchema(fc.getSchema());
>
> /*
> * Write the features to the shapefile
> */
> Transaction transaction = new DefaultTransaction("create");
>
> String typeName = newDataStore.getTypeNames()[0];
> FeatureSource featureSource = newDataStore
> .getFeatureSource(typeName);
>
> if (featureSource instanceof FeatureStore) {
> FeatureStore featureStore = (FeatureStore) featureSource;
>
> featureStore.setTransaction(transaction);
> try {
> featureStore.addFeatures(fc);
> transaction.commit();
>
> } catch (Exception problem) {
> problem.printStackTrace();
> transaction.rollback();
> } finally {
> transaction.close();
> }
> } else {
> LOGGER.info (http://LOGGER.info)(typeName + " does not support read/write
> access");
> }
>
>
>
> EXCEPTION:
>
> java.io.IOException: Unable to write : java.lang.Object
> at
> org.geotools.data.shapefile.ShapefileDataStore.createDbaseHeader(ShapefileDataStore.java:1061)
> at
> org.geotools.data.shapefile.ShapefileDataStore.createSchema(ShapefileDataStore.java:855)
> at
> uk.ac.glam.smartwps.server.OWSRequestServiceImpl.gmlToShapefile(OWSRequestServiceImpl.java:286)
> at
> uk.ac.glam.smartwps.server.OWSRequestServiceImpl.testSomething(OWSRequestServiceImpl.java:748)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at com.google.gwt.user.server.rpc.RPC.invokeAndEncodeResponse(RPC.java:569)
> at
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processCall(RemoteServiceServlet.java:208)
> at
> com.google.gwt.user.server.rpc.RemoteServiceServlet.processPost(RemoteServiceServlet.java:248)
> at
> com.google.gwt.user.server.rpc.AbstractRemoteServiceServlet.doPost(AbstractRemoteServiceServlet.java:62)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
> at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:487)
> at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:362)
> 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:729)
> at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
> at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
> at
> org.mortbay.jetty.handler.RequestLogHandler.handle(RequestLogHandler.java:49)
> 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$RequestHandler.content(HttpConnection.java:843)
> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:647)
> at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
> at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
> at
> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
> at
> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
>
>
> On 14 June 2011 13:28, Jody Garnett <[email protected]
> (mailto:[email protected])> wrote:
> > Here is the trouble; especially with GML from a WPS service - what schema
> > does the GML match? We need the schema in order to do a good job parsing
> > it. GML without a schema is like charging off into the wilderness; it may
> > be a fun ride but you are not going to be sure where you will end up.
> >
> > However if your GML output references a schema at the top of the file you
> > may be okay? I added some code the the GML utility class that would process
> > the output of parsing GML without a schema (ends up as raw data in
> > java.util.Map data structures) and convert it into "features" for normal
> > use.
> >
> > You can backport that code if you like; if not I recommend using the GML
> > Configuration + Parser and sorting things out yourself.
> >
> > --
> > Jody Garnett
> >
> >
> > On Tuesday, 14 June 2011 at 10:11 PM, Jon Britton wrote:
> >
> >
> >
> > > Hi,
> > >
> > > I need to convert the output of a WPS process (GML) to Shapefile so I can
> > > upload it into GeoServer. I've done some searching and found quite a few
> > > different examples, many of which seem out of date (or even too in-date,
> > > I'm using GeoTools 2.6.1). All I've got is a URL to the GML process
> > > output to work with.
> > >
> > > Any help would be appreciated.
> > >
> > > Thanks,
> > >
> > > Jon
> > > ------------------------------------------------------------------------------
> > > EditLive Enterprise is the world's most technically advanced content
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> >
> >
> > ------------------------------------------------------------------------------
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> > authoring tool. Experience the power of Track Changes, Inline Image
> > Editing and ensure content is compliant with Accessibility Checking.
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> >
>
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