Hallo,
I'm parsing a textfile line by line. Line values are simply split. One of
these values consist of polygon coordinates, which I allready used for
creating a jts Polygon object. I want to write the polygons along with the
other attributes to shape and dbf. I just can't manage it using the
following code. what am i doing wrong?
any comments will be helpful. thanks.
steffen.
GeometryFactory gf = new GeometryFactory();
MemoryDataStore data = new MemoryDataStore();
FeatureType type = null;
try {
BufferedReader reader = new BufferedReader(new
FileReader(infile));
String strLine;
String[] fieldnames = reader.readLine().split("~");
while ((strLine = reader.readLine()) != null) {
String[] items = strLine.split("~");
for (int i = 0; i < items.length; i++) {
if (fieldnames[i].contains("FOOT")) {
String[] footprint =
items[i].split(" ");
int idx = 0;
Coordinate[] coords = new
Coordinate[footprint.length / 2];
for (int j = 0; j <
footprint.length / 2; j++) {
Coordinate coord = new
Coordinate(Double
.parseDouble(footprint[idx + 1]), Double
.parseDouble(footprint[idx]));
idx = idx + 2;
coords[j] = coord;
}
LinearRing ring =
gf.createLinearRing(coords);
Polygon polygon =
gf.createPolygon(ring, null);
AttributeType attr =
AttributeTypeFactory
.newAttributeType("the_geom", Polygon.class);
// I dont really understand this
FeatureTypeBuilder ftBuilder =
FeatureTypeBuilder
.newInstance("ez");
ftBuilder.addType(attr);
type =
ftBuilder.getFeatureType();
Feature feature =
type.create(new Object[] { polygon });
data.addFeature(feature);
}
}
ShapefileDataStore newShapefileDataStore = new
ShapefileDataStore(
out.toURL());
newShapefileDataStore.createSchema(type);
// grab the data source from the new shapefile data store
FeatureSource newFeatureSource =
data.getFeatureSource("ez");
FeatureCollection fsFilteredShape =
newFeatureSource.getFeatures();
// downcast FeatureSource to specific implementation of
FeatureStore
FeatureStore newFeatureStore =
(FeatureStore)newFeatureSource;
// accquire a transaction to create the shapefile from
FeatureStore
Transaction t = newFeatureStore.getTransaction();
// add features got from the query (FeatureReader)
//newFeatureStore.addFeatures(filteredReader);
newFeatureStore.addFeatures(fsFilteredShape);
// filteredReader is now exhausted and closed, commit the
changes
t.commit();
t.close();
}
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
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