Hi,
sorry for spaming the list with my problems, but after fiddling some hours with
my code, i made no further progress myself solving the problem.
So, this is my code:
URL url = new
URL("http://localhost/geoserver/wfs?request=getCapabilities&srs=EPSG:4326";);
Map<String, Serializable> m = new HashMap<String, Serializable>();
m.put(WFSDataStoreFactory.URL.key, url);
m.put(WFSDataStoreFactory.TIMEOUT.key, 30000);
m.put(WFSDataStoreFactory.MAXFEATURES.key, 10);
DataStore wfs = (new WFSDataStoreFactory()).createDataStore(m);
Query query = new DefaultQuery(wfs.getTypeNames()[i], bbox, new String[]
"osm_id","name"} );
FeatureReader ft = wfs.getFeatureReader(query, Transaction.AUTO_COMMIT);
I am trying to access my WFS, explicitly requesting only the ids and names of
the features.
This is what java gave me back:
03.09.2009 09:46:02 org.geotools.data.wfs.WFSDataStoreFactory
determineCorrectStrategy
INFO: Using WFS Strategy: org.geotools.data.wfs.v1_1_0.GeoServerStrategy
03.09.2009 09:46:02 org.geotools.xml.impl.AttributeEncodeExecutor visit
WARNUNG: results[ class java.lang.String ] is not of type class
net.opengis.wfs.ResultTypeType
03.09.2009 09:46:02 org.geotools.xml.impl.AttributeEncodeExecutor visit
WARNUNG: Binding: {http://www.opengis.net/ows}ServiceType does not declare a
target type
03.09.2009 09:46:02 org.geotools.xml.impl.AttributeEncodeExecutor visit
WARNUNG: Binding: {http://www.opengis.net/wfs}Base_TypeNameListType does not
declare a target type
03.09.2009 09:46:02 org.geotools.xml.impl.AttributeEncodeExecutor visit
WARNUNG: Binding: {http://www.opengis.net/wfs}TypeNameListType does not declare
a target type
DecribeFT URL for osm_auto:points:
http://localhost/geoserver/wfs?=&TYPENAME=osm_auto%3Apoints&VERSION=1.1.0&SERVICE=WFS&REQUEST=DescribeFeatureType&NAMESPACE=xmlns%28osm_auto%3Dhttp%3A%2F%2Ffoo_domain%2Fkarto%2Fosm_auto%29&;
java.lang.NullPointerException: PropertyDescriptor is null - did you request a
property that does not exist?
at
org.geotools.feature.type.ComplexTypeImpl.<init>(ComplexTypeImpl.java:71)
at
org.geotools.feature.type.FeatureTypeImpl.<init>(FeatureTypeImpl.java:50)
at
org.geotools.feature.simple.SimpleFeatureTypeImpl.<init>(SimpleFeatureTypeImpl.java:55)
at
org.geotools.feature.type.FeatureTypeFactoryImpl.createSimpleFeatureType(FeatureTypeFactoryImpl.java:154)
at
org.geotools.feature.simple.SimpleFeatureTypeBuilder.buildFeatureType(SimpleFeatureTypeBuilder.java:850)
at
org.geotools.data.DataUtilities.createSubType(DataUtilities.java:1303)
at
org.geotools.data.wfs.v1_1_0.parsers.FeatureCollectionParser.parse(FeatureCollectionParser.java:65)
at
org.geotools.data.wfs.protocol.wfs.WFSExtensions.process(WFSExtensions.java:75)
at
org.geotools.data.wfs.v1_1_0.WFS_1_1_0_DataStore.getFeatureReader(WFS_1_1_0_DataStore.java:325)
at myprog.loadFeaturesFromWFS(MyProg.java:94)
So, basically it says, that there is no property called name. I sniffed the
network traffic and this is the schema, that is returend to geotools during the
request:
<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema";
xmlns:gml="http://www.opengis.net/gml";
xmlns:osm_auto="http://foo_domain/karto/osm_auto";
elementFormDefault="qualified"
targetNamespace="http://foo_domain/karto/osm_auto";>
<xsd:import namespace="http://www.opengis.net/gml";
schemaLocation="http://localhost:80/geoserver/schemas/gml/3.1.1/base/gml.xsd"/>
<xsd:complexType name="pointsType">
<xsd:complexContent>
<xsd:extension base="gml:AbstractFeatureType">
<xsd:sequence>
<xsd:element maxOccurs="1" minOccurs="0" name="osm_id"
nillable="true" type="xsd:int"/>
<xsd:element maxOccurs="1" minOccurs="0" name="name" nillable="true"
type="xsd:string"/>
<xsd:element maxOccurs="1" minOccurs="0" name="type" nillable="true"
type="xsd:string"/>
<xsd:element maxOccurs="1" minOccurs="0" name="public_tran"
nillable="true" type="xsd:string"/>
<xsd:element maxOccurs="1" minOccurs="0" name="amenity"
nillable="true" type="xsd:string"/>
<xsd:element maxOccurs="1" minOccurs="0" name="shop" nillable="true"
type="xsd:string"/>
<xsd:element maxOccurs="1" minOccurs="0" name="tourism"
nillable="true" type="xsd:string"/>
<xsd:element maxOccurs="1" minOccurs="0" name="the_geom"
nillable="true" type="gml:PointPropertyType"/>
</xsd:sequence>
</xsd:extension>
</xsd:complexContent>
</xsd:complexType>
<xsd:element name="points" substitutionGroup="gml:_Feature"
type="osm_auto:pointsType"/>
</xsd:schema>
So, the schema does explicity state that there is a property called "name". Any
idea whats wrong?
Thank you very much,
Julian
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