/branches/v2_0_0_prep/libraries/libFMap_spatialindex/src/org/gvsig/fmap/data/index/spatial/jsi/PersistentRTreeJsi.java - Diff - | gvSIG desktop 1 - gvSIG

Revision 24248 branches/v2_0_0_prep/libraries/libFMap_spatialindex/src/org/gvsig/fmap/data/index/spatial/jsi/PersistentRTreeJsi.java

     import javax.imageio.stream.FileImageOutputStream;
     import org.gvsig.fmap.data.exceptions.InitializeException;
     import org.gvsig.fmap.data.feature.FeatureReference;
     import org.gvsig.fmap.data.feature.exceptions.FeatureIndexException;
     import org.gvsig.fmap.data.feature.spi.FeatureReferenceProviderServices;
     import org.gvsig.fmap.geom.primitive.Envelope;
     import com.infomatiq.jsi.Rectangle;
-...
     /**
      * Persistent spatial index which can resolve nearest neighbour queries.
      * <br>
+     *
+     *
      * To use:
+     *
+     *
      * PersistentRTreeJsi sptidx = new PersistentRtreeJsi("/home/kk");
      * if(sptidx.exists())
      *  sptidx.load();
+     *
+     *
+     *
+     *
      *  sptidx.add(rect, int);
      *  ...
      *  sptidx.add(rect2,int2);
      *  sptidx.flush();
+     *
+     *
      * @author azabala
+     *
      */
     public class PersistentRTreeJsi extends RTreeJsi {
     	public static final String NAME = "PersistentRTreeJsi";
     	/**
     	 * Spatial index in memory
     	 */
-...
     	 * Spatial index file
     	 */
     	private File file;
     	private boolean hasChanged = false;
     	/**
     	 * Spatial index file extension
     	 */
     	final String rExt = ".rix";
     	private LinkedHashMap  rectangles;
     	/**
     	 * Constructor
     	 * @param fileName path of the spatial index file
     	 * @throws FeatureIndexException
     	 */
     	 * @throws FeatureIndexException
     	 */
     	public PersistentRTreeJsi() {
     		rtree = new RTree();
+    	}
     	public void initialize() throws InitializeException {
     		Properties props = new Properties();
     		rtree.init(props);
     		try {
     		try {
     			file = File.createTempFile("RTreeJsi" + getFeatureIndexProviderServices().getTemporaryFileName(), rExt);
     			rectangles = new LinkedHashMap();
     			load();
-...
     			throw new InitializeException(e);
+    		}
+    	}
     	public void flush(File f) throws FeatureIndexException {
     		try {
     			if(! hasChanged)
     			if(! hasChanged) {
     				return;
+    			}
     			RandomAccessFile file = new RandomAccessFile(f,
     															"rw");
     			FileImageOutputStream output = new FileImageOutputStream(file);
     			output.setByteOrder(ByteOrder.LITTLE_ENDIAN);
     			int numShapes = rtree.size();
     			output.writeInt(numShapes);
     			Iterator iterator = rtree.iterator();
     			int count = 0;
     			while(iterator.hasNext()){
-...
     				Rectangle nr = (Rectangle) rectangles.get(idx);
     				float xmin = nr.min[0];
     				float ymin = nr.min[1];
     				float xmax = nr.max[0];
     				float ymax = nr.max[1];
     				output.writeFloat(xmin);
     				output.writeFloat(ymin);
     				output.writeFloat(xmax);
     				output.writeFloat(ymax);
     				output.writeInt(idx.intValue());
     				count++;
+    			}
-...
     		} catch (IOException e) {
     			throw new FeatureIndexException(e);
+    		}
+    	}
     	public void flush() throws FeatureIndexException {
     		flush(file);
+    	}
-...
+    	}
     	public void load(File f) throws FeatureIndexException {
     		if (f == null) throw new IllegalArgumentException("File f cannot be null");
     		if (f == null) {
     			throw new IllegalArgumentException("File f cannot be null");
+    		}
     		try {
     			if(! f.exists()){
     				return;
-...
     				xmax = buf.getFloat();
     				ymax = buf.getFloat();
     				shapeIndex = buf.getInt();
     				Rectangle jsiRect = new Rectangle(xmin, ymin, xmax, ymax);
     				rtree.add(jsiRect, shapeIndex);
+    			}
     		}catch(Exception e){
     			throw new FeatureIndexException(e);
+    		}
+    		}
+    	}
     	public void load() throws FeatureIndexException {
     		load(file);
+    	}
-...
     		rectangles.clear();
     		rectangles = null;
+    	}
     	public void insert(Object value, FeatureReference fref) {
     	public void insert(Object value, FeatureReferenceProviderServices fref) {
     		super.insert(value, fref);
     		rectangles.put((Integer) fref.getId(), toJsiRect((Envelope) value));
     		rectangles.put(fref.getOID(), toJsiRect((Envelope) value));
     		hasChanged = true;
+    	}
     	public void delete(Object value, FeatureReference fref) {
     	public void delete(Object value, FeatureReferenceProviderServices fref) {
     		super.delete(value, fref);
     		rectangles.remove((Integer) fref.getId());
     		rectangles.remove(fref.getOID());
     		hasChanged = true;
+    	}
     	public List findNNearest(int numberOfNearest, Point2D point){
     		com.infomatiq.jsi.Point jsiPoint =
     			new com.infomatiq.jsi.Point((float)point.getX(),(float)point.getY());
     		return (List) rtree.nearest(jsiPoint, numberOfNearest);
+    	}
     	public File getFile() {
     		return this.file;
+    	}

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