Hi all,
I'm a new user of geotools, and I have the following problem.
In my application I have to develop a kind a "navigator". To do this, I
have a map layer in which I want to set up the position every two seconds.
I did a method called "updateVehiclePosition" in which a transaction
modifies the geometry value (Point). The problem is that this method works
until no timing function is called. When I insert the TimerTask, the
method stops at the transaction commit, and the map is not painted.
Can anyone help me in fixing this problem?
I report in the following the interested piece of code.
public static void updateVehiclePosition(Object object) throws IOException {
DefaultTransaction transaction = new DefaultTransaction("Example1");
FeatureStore fstore = (FeatureStore) map.getLayer(5).getFeatureSource();
fstore.setTransaction( transaction );
FilterFactory ff =
CommonFactoryFinder.getFilterFactory(GeoTools.getDefaultHints() );
Filter filter = ff.id( Collections.singleton( ff.featureId("location.1")));
SimpleFeatureType featureType = (SimpleFeatureType) fstore.getSchema();
AttributeType attributeType = featureType.getType("Location");
try {
fstore.modifyFeatures( attributeType.getName(), object, filter );
transaction.commit();
}
catch( Exception eek){
transaction.rollback();
}
finally{
transaction.close();
}
}
public static void go() {
final java.util.Timer timer = new java.util.Timer();
TimerTask task = new TimerTask() {
int line = 1;
public void run() {
if(line>3){timer.cancel();}
leggi(line);
line++;
};
};
timer.scheduleAtFixedRate(task, 0, 2000);
}
private static void leggi(int line2) {
System.out.println("in percorso line = "+line2);
Object pos;
pos=C2XVisualizer.readPosition(line2);
try {
C2XVisualizer.updateVehiclePosition(pos);
} catch (IOException e) {e.printStackTrace();}
}
}
--
Francesca Martelli, Computer Science Ph.D.
Algorithms and Computational Mathematics Group, IIT - CNR, Pisa
Phone: +39 050 315 3191 (office), +39 050 315 2333 (fax)
http://www.iit.cnr.it/francesca.martelli/
email: [email protected]
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