I am trying to write code to import the TIGER shapefiles, which of course
have multiple fields in different orders.
The solution seems to be the index field in SimpleFeatureImpl, but it has
protected access. A quick look at the source doesn't show any method to
retrieve it.
Is there an easy way to get access to that field without checking out the
whole project and modifying the one source file?
Here is my source (snipped from a Struts2 action). Right now, the code will
only successfully process a County or Equivalent shapefile. If I could
access the index, I could handle multiple types.
BorderPoint is a simple POJO tagged as a Hibernate entity.
ShapefileDataStore store = new ShapefileDataStore(shpFile.toURL());
String[] typenames = store.getTypeNames();
for (String name : typenames) {
FeatureSource featureSource = store.getFeatureSource(name);
FeatureCollection featureCollection =
featureSource.getFeatures();
FeatureIterator iterator = featureCollection.features();
try {
// FeatureCollection doesn't implement Iterator, so no
forEach() loop for me. Jerks.
StateCode stateCode = null;
Integer stateCodeId = null;
while (iterator.hasNext()) {
SimpleFeatureImpl feature = (SimpleFeatureImpl)
iterator.next();
SimpleFeatureImpl.class.getDeclaredField("index").setAccessible(true);
int stateId = feature.index.get("MTFCC"); // DOESNT WORK
SINCE index IS PROTECTED
// TODO: CREATE THE BORDERPOINT HERE!!!
// process a county
String lineType = (String) feature.getAttribute(9);
if (lineType.equals("G4020")) {
// get the StateCode.. statecode isn't going to
change since user is required to upload
// state-based shapefiles
if (stateCodeId == null) {
stateCodeId = Integer.parseInt((String)
feature.getAttribute(1));
stateCode =
stateCodeService.getByStateCode(stateCodeId);
}
int subCodeId = Integer.parseInt((String)
feature.getAttribute(2));
String subCodeDescription = (String)
feature.getAttribute(5);
SubCode subCode = new SubCode(stateCode, subCodeId,
subCodeDescription, "County");
SubCode result = subCodeService.save(subCode);
//BorderPointFactory bpFactory = new
BorderPointFactory(stateCode, subCode);
MultiPolygon mp = (MultiPolygon)
feature.getAttribute(0);
Geometry g = mp.getGeometryN(0);
Coordinate[] coordinates = g.getCoordinates();
Set<BorderPoint> bpSet = new HashSet<BorderPoint>();
for (Coordinate c : coordinates) {
Float lat = new Float(c.x);
Float lng = new Float(c.y);
lat = MathUtils.round(lat, 3);
lng = MathUtils.round(lng, 3);
if (lat != null && lng != null) {
BorderPoint bp = new BorderPoint(stateCode,
subCode, lat, lng);
bpSet.add(bp);
}
}
borderPointService.saveAll(bpSet);
}
}
}
finally {
featureCollection.close(iterator);
}
}
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