Maybe some precision:
on a FeatureSource retrieved from WFS Datastore, is it possible to apply
a Query to which we set a Hint? i.e. using Hint.VIRTUAL_TABLE_PARAMETER
and the viewParams in a HashMap
I tried to apply such query (see code velow) and get the corresponding
feature collection, but does not work: I still get the default feature
collection (i.e. corresponding to the default view params set in Geoserver)
Thanks in advance
Emmanuel
/// viewParams
//------------------
Map<String,String> viewParams = new HashMap<String,String>();
viewParams.put("p1","v1");
viewParams.put("p2","v2");
viewParams.put("p3","v3");
// Datastore
//--------------
URL url = null;
try {
url = new URL(
"http://localhost:8080/geoserver/wfs?request=GetCapabilities&VERSION=1.0.0";
);
} catch (MalformedURLException e) {
e.printStackTrace();
}
Map<String,Serializable> params = new
HashMap<String,Serializable>();
params.put(WFSDataStoreFactory.URL.key, url);
params.put(WFSDataStoreFactory.TIMEOUT.key, new Integer(60000));
params.put(WFSDataStoreFactory.MAXFEATURES.key, new
Integer(200000));
params.put(WFSDataStoreFactory.WFS_STRATEGY.key, "geoserver");
DataStore store = null;
try {
store = DataStoreFinder.getDataStore(params);
} catch (IOException e) {
e.printStackTrace();
}
//Layername
//----------------
String typeName = "mylayer";
//WFS Layer
FeatureSource<? extends FeatureType, ? extends Feature> featureSource =
null;
try {
featureSource = store.getFeatureSource(typeName);
System.out.println(typeName);
} catch (IOException e) {
e.printStackTrace();
}
//Query
----------
Hints hints = new Hints();
hints.put(Hints.VIRTUAL_TABLE_PARAMETERS, viewParams);
Query query = new Query(Query.ALL);
query.setHints(hints);
//Size of Feature Collection
try {
System.out.println(featureSource.getFeatures(query).size());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}/
Le 27/02/2012 17:06, Emmanuel Blondel a écrit :
Dear all,
I am currently using WFSDatastore in Geotools to get the features from
a Geoserver.
I need to get the features from layers built on a SQL view, i.e. that
allows view parameters ("viewparams") in WMS and WFS requests
I created parameters using WFSDataStoreFactory and then created a
datastore with DataStoreFinder. I want to get the FeatureSource but
only for specific view parameter values. Is it possible to specify
values for the view parameters with the WFS geotools plugin? in order
to get only the features corresponding to these view parameters.
Thanks in advance for your help,
Emmanuel
--
*Emmanuel Blondel*
GIS Consultant
Geographic Information Systems
in Agronomy - Environment -Fisheries
Email: [email protected] - [email protected]
--
*Emmanuel Blondel*
GIS Consultant
Geographic Information Systems
in Agronomy - Environment -Fisheries
Email: [email protected] - [email protected]
Phone: +33 (0) 6 45 97 87 52
------------------------------------------------------------------------------
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