GeoTools, the Java GIS toolkit

On Tue, Nov 27, 2012 at 10:30 AM, Emmanuel Blondel <
emmanuel.blondel1@...> wrote:

>  Hello all,
>
> Since a few weeks, i don't know why but the WFS Datastore does not work
> anymore in my codes.
> I'm using GeoTools 8.2.
>
> Here the sample code I run:
>
> *SimpleFeatureCollection result = null;**
> **        try{**
> **            **
> **            String wfsGetCap =
> "http://localhost:8080/geoserver/ows?service=WFS&version=1.0.0&request=GetCapabilities"<http://localhost:8080/geoserver/ows?service=WFS&version=1.0.0&request=GetCapabilities>
> ;**
> **            **
> **            // use the WFS Datastore**
> **            Map<String, Serializable> params = new HashMap<String,
> Serializable>();**
> **            params.put(WFSDataStoreFactory.URL.key, wfsGetCap);**
> **            params.put(WFSDataStoreFactory.TIMEOUT.key, new
> Integer(60000));**
> **            **
> **            DataStore datastore = DataStoreFinder.getDataStore(params);*
> *
> **            SimpleFeatureSource featureSource =
> datastore.getFeatureSource("mylayer");**
> **            **
> **            **
> **            result = featureSource.getFeatures();**
> **            **
> **        }catch(Exception e){**
> **            new RuntimeException("Unable to get the target collection",
> e);**
> **        }**
> **        **
> **System.out.println(result.size());*
>
>
> and the error i get:
>
> *Exception in thread "main" java.lang.NoSuchMethodError:
> org.geotools.filter.capability.FunctionNameImpl.parameter(Ljava/lang/String;Ljava/lang/Class;)Lorg/opengis/parameter/Parameter;
> **
> **    at
> org.geotools.filter.function.FilterFunction_setCRS.<clinit>(FilterFunction_setCRS.java:32)
> **
> ***
>

This is a classpath issue, jars from different versions of GeoTools have
been added in the classpath.
Are you using Maven?


> Could somebody help me in identifying what's the issue and solve it?
> In other case, does anyone know an efficient way to get feature
> collections from WFS (possibly applying a filter)?
>
>
Just add a filter in the query when grabbing the feature collection, the
store will try to send as much of it
as possible down to the WFS server, according to what the server advertises
as its filter capabilities

Cheers
Andrea
-- 
==
Our support, Your Success! Visit http://opensdi.geo-solutions.it for more
information.
==

Ing. Andrea Aime
@geowolf
Technical Lead

GeoSolutions S.A.S.
Via Poggio alle Viti 1187
55054  Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
mob: +39  339 8844549

http://www.geo-solutions.it
http://twitter.com/geosolutions_it

-------------------------------------------------------

Thanks Andrea,
Indeed i had some related project that didn't use the same Geotools 
version, didn't check well the classpath.


Le 27/11/2012 10:58, Andrea Aime a écrit :
> On Tue, Nov 27, 2012 at 10:30 AM, Emmanuel Blondel 
> <emmanuel.blondel1@... <mailto:emmanuel.blondel1@...>> wrote:
>
>     Hello all,
>
>     Since a few weeks, i don't know why but the WFS Datastore does not
>     work anymore in my codes.
>     I'm using GeoTools 8.2.
>
>     Here the sample code I run:
>
>     /SimpleFeatureCollection result = null;//
>     //        try{//
>     ////
>     //            String wfsGetCap =
>     "http://localhost:8080/geoserver/ows?service=WFS&version=1.0.0&request=GetCapabilities"
>     <http://localhost:8080/geoserver/ows?service=WFS&version=1.0.0&request=GetCapabilities>;//
>     ////
>     //            // use the WFS Datastore//
>     //            Map<String, Serializable> params = new
>     HashMap<String, Serializable>();//
>     //            params.put(WFSDataStoreFactory.URL.key, wfsGetCap);//
>     //params.put(WFSDataStoreFactory.TIMEOUT.key, new Integer(60000));//
>     ////
>     //            DataStore datastore =
>     DataStoreFinder.getDataStore(params);//
>     //            SimpleFeatureSource featureSource =
>     datastore.getFeatureSource("mylayer");//
>     ////
>     ////
>     //            result = featureSource.getFeatures();//
>     ////
>     //        }catch(Exception e){//
>     //            new RuntimeException("Unable to get the target
>     collection", e);//
>     //        }//
>     ////
>     //System.out.println(result.size());/
>
>
>     and the error i get:
>
>     /Exception in thread "main" java.lang.NoSuchMethodError:
>     org.geotools.filter.capability.FunctionNameImpl.parameter(Ljava/lang/String;Ljava/lang/Class;)Lorg/opengis/parameter/Parameter;//
>     //    at
>     org.geotools.filter.function.FilterFunction_setCRS.<clinit>(FilterFunction_setCRS.java:32)//
>     /
>
>
> This is a classpath issue, jars from different versions of GeoTools 
> have been added in the classpath.
> Are you using Maven?
>
>     Could somebody help me in identifying what's the issue and solve it?
>     In other case, does anyone know an efficient way to get feature
>     collections from WFS (possibly applying a filter)?
>
> Just add a filter in the query when grabbing the feature collection, 
> the store will try to send as much of it
> as possible down to the WFS server, according to what the server 
> advertises as its filter capabilities
>
> Cheers
> Andrea
> -- 
> ==
> Our support, Your Success! Visit http://opensdi.geo-solutions.it for 
> more information.
> ==
>
> Ing. Andrea Aime
> @geowolf
> Technical Lead
>
> GeoSolutions S.A.S.
> Via Poggio alle Viti 1187
> 55054  Massarosa (LU)
> Italy
> phone: +39 0584 962313
> fax: +39 0584 1660272
> mob: +39  339 8844549
>
> http://www.geo-solutions.it
> http://twitter.com/geosolutions_it
>
> -------------------------------------------------------
>