public double saveBinaryFileNoBuffer() throws IOException {
double time = System.nanoTime();
File file =
new File("C:\\Users\\rvanduijnhoven\\Documents\\jsfoutput\\binFileWithoutBuffer.bin");
FileChannel fileChannel = null;
MappedByteBuffer map = null;
int counter = 0;
try {
// fileOut = new FileOutputStream(file);
// outPut = new DataOutputStream(fileOut);
fileChannel = new RandomAccessFile(file, "rw").getChannel();
map = fileChannel.map(FileChannel.MapMode.READ_WRITE, 0, 4096 * 128 * 128);
counter = edges.size();
for (Edge e : edges) {
map.putDouble(e.X1);
map.putDouble(e.Y1);
map.putDouble(e.X2);
map.putDouble(e.Y2);
map.putDouble(e.color.getRed());
map.putDouble(e.color.getGreen());
map.putDouble(e.color.getBlue());
}
} catch (Exception ex) {
ex.printStackTrace();
}
edges.clear();
map.position(0);
// Now read every edge from the file and draw it.
try {
// fileIn = new FileInputStream(file);
// inPut = new DataInputStream(fileIn);
fileChannel = new RandomAccessFile(file, "r").getChannel();
map = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, 4096 * 128 * 128);
for (int i = 0; i <= counter; i++) {
double X1 = map.getDouble();
double Y1 = map.getDouble();
double X2 = map.getDouble();
double Y2 = map.getDouble();
double red = map.getDouble();
double green = map.getDouble();
double blue = map.getDouble();
Edge e = new Edge(X1, Y1, X2, Y2, new Color(red, green, blue, 1));
drawEdge(e);
}
} catch (Exception ex) {
ex.printStackTrace();
}
return System.nanoTime() - time;
}
public double loadBinaryFile() throws IOException {
double time = System.nanoTime();
File file = new File("C:\\Users\\rvanduijnhoven\\Documents\\jsfoutput\\jsfweek14.bin");
FileChannel fileChannel = null;
MappedByteBuffer map = null;
int counter = 0;
// Now read every edge from the file and draw it.
try {
// fileIn = new FileInputStream(file);
// inPut = new DataInputStream(fileIn);
fileChannel = new RandomAccessFile(file, "r").getChannel();
map = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, 4096 * 128 * 128);
double d = map.getDouble();
currentLevel = (int) d;
counter = (int) (3 * Math.pow(4, currentLevel - 1));
for (int i = 0; i <= counter; i++) {
double X1 = map.getDouble();
double Y1 = map.getDouble();
double X2 = map.getDouble();
double Y2 = map.getDouble();
double red = map.getDouble();
double green = map.getDouble();
double blue = map.getDouble();
Edge e = new Edge(X1, Y1, X2, Y2, new Color(red, green, blue, 1));
drawEdge(e);
}
} catch (Exception ex) {
ex.printStackTrace();
} finally {
fileChannel.close();
map.clear();
}
return System.nanoTime() - time;
}
public void watchForNewEdges() {
// File file = new File("C:\\Users\\rvanduijnhoven\\Documents\\jsfoutput\\jsfweek14.bin");
// Get the file system
// FileSystem fs = path.getFileSystem();
// Create the watchservice
try {
Path path = Paths.get("C:/Users/rvanduijnhoven/Documents/jsfoutput/");
WatchService service = FileSystems.getDefault().newWatchService();
path.register(service, ENTRY_CREATE, ENTRY_DELETE, ENTRY_MODIFY);
WatchKey key;
while (true) {
key = service.take();
for (WatchEvent<?> event : key.pollEvents()) {
// Code here that does something when new edges have been generated
System.out.println(event.context().toString());
WatchEvent<Path> ev = (WatchEvent<Path>) event;
WatchEvent.Kind kind = ev.kind();
if (kind == OVERFLOW) {
continue; // just to demonstrate
}
Path changed = ev.context();
Path child = path.resolve(changed);
if (changed.toString().equals("jsfweek14.bin")) {
clearKochPanel();
File file = new File("C:\\Users\\rvanduijnhoven\\Documents\\jsfoutput\\jsfweek14.bin");
FileChannel fileChannel = null;
MappedByteBuffer map = null;
int counter = 0;
// Now read every edge from the file and draw it.
try {
fileChannel = new RandomAccessFile(file, "r").getChannel();
map = fileChannel.map(FileChannel.MapMode.READ_ONLY, 0, 4096 * 128 * 128);
double d = map.getDouble();
currentLevel = (int) d;
counter = (int) (3 * Math.pow(4, currentLevel - 1));
for (int i = 0; i <= counter; i++) {
double X1 = map.getDouble();
double Y1 = map.getDouble();
double X2 = map.getDouble();
double Y2 = map.getDouble();
double red = map.getDouble();
double green = map.getDouble();
double blue = map.getDouble();
Edge e = new Edge(X1, Y1, X2, Y2, new Color(red, green, blue, 1));
drawEdge(e);
}
key.reset();
} catch (Exception ex) {
ex.printStackTrace();
} finally {
fileChannel.close();
map.clear();
}
}
key.reset();
}
}
} catch (IOException ioe) {
ioe.printStackTrace();
} catch (Exception ie) {
ie.printStackTrace();
}
}