/**
* Creates a new NameSurferDataBase and initializes it using the data in the specified file. The
* constructor throws an error exception if the requested file does not exist or if an error
* occurs as the file is being read.
*/
public NameSurferDataBase(String filename) {
File file = new File(filename);
try {
Scanner scanner = new Scanner(new FileReader(file));
while (scanner.hasNextLine()) {
NameSurferEntry entry = new NameSurferEntry(scanner.nextLine());
String name = entry.getName().toLowerCase();
if (!name.equals("error")) data.put(name, entry);
}
scanner.close();
} catch (IOException ex) {
// don't care do nothing
}
}
/**
* Creates a new NameSurferDataBase and initializes it using the data in the specified file. The
* constructor throws an error exception if the requested file does not exist or if an error
* occurs as the file is being read.
*/
public NameSurferDataBase(String filename) {
try {
BufferedReader br = new BufferedReader(new FileReader(filename));
while (true) {
String line = br.readLine();
if (line == null) break;
NameSurferEntry entry = new NameSurferEntry(line);
dataBase.put(entry.getName(), entry);
}
br.close();
} catch (IOException e) {
System.out.println("file not found: " + filename);
}
}
/**
* Creates a new NameSurferDataBase and initializes it using the data in the specified file. The
* constructor throws an error exception if the requested file does not exist or if an error
* occurs as the file is being read.
*/
public NameSurferDataBase(String filename) {
try {
BufferedReader rd = new BufferedReader(new FileReader(filename));
while (true) {
String line = rd.readLine();
if (line == null) break;
NameSurferEntry entry = new NameSurferEntry(line);
namesDataBase.put(entry.getName(), entry);
}
rd.close();
} catch (IOException ex) {
throw new ErrorException(ex);
}
}
/**
* Creates a new NameSurferDataBase and initializes it using the data in the specified file. The
* constructor throws an error exception if the requested file does not exist or if an error
* occurs as the file is being read.
*/
public NameSurferDataBase(String filename) { // a class with a particular input parameter
BufferedReader rd = null;
try {
rd = new BufferedReader(new FileReader(filename));
while (true) {
String line = rd.readLine();
if (line == null) break;
/**
* 这里，NameSurferEntry必须读入String类型的数据，所以要确保NameSurferEntry(line) 中的line有数据，所以if (line ==
* null) break; 必须放在前面，否则当读取到最后一行 的时候，line == null了，NameSurferEntry就会报错
*/
NameSurferEntry obj = new NameSurferEntry(line);
data.put(obj.getName(), obj); // corresponding name and NameSurferEntry
}
rd.close();
} catch (IOException ex) {
System.out.println("no file!");
}
}
/* Draw graph line with the name and rating */
private void drawEntry(NameSurferEntry entry, int entryNumber) {
/* Draws graph line */
for (int i = 0; i < NDECADES - 1; i++) {
int position1 = entry.getRank(i);
int position2 = entry.getRank(i + 1);
double x1 = i * (getWidth() / NDECADES);
double x2 = (i + 1) * (getWidth() / NDECADES);
double y1 = 0;
double y2 = 0;
if (position1 != 0 && position2 != 0) {
y1 = GRAPH_MARGIN_SIZE + (getHeight() - GRAPH_MARGIN_SIZE * 2) * position1 / MAX_RANK;
y2 = GRAPH_MARGIN_SIZE + (getHeight() - GRAPH_MARGIN_SIZE * 2) * position2 / MAX_RANK;
} else if (position1 == 0 && position2 == 0) {
y1 = getHeight() - GRAPH_MARGIN_SIZE;
y2 = y1;
} else if (position1 == 0) {
y1 = getHeight() - GRAPH_MARGIN_SIZE;
y2 = GRAPH_MARGIN_SIZE + (getHeight() - GRAPH_MARGIN_SIZE * 2) * position2 / MAX_RANK;
} else {
y1 = GRAPH_MARGIN_SIZE + (getHeight() - GRAPH_MARGIN_SIZE * 2) * position1 / MAX_RANK;
y2 = getHeight() - GRAPH_MARGIN_SIZE;
}
GLine line = new GLine(x1, y1, x2, y2);
/* Set line color */
if (entryNumber % 4 == 0) {
line.setColor(Color.BLUE);
} else if (entryNumber % 4 == 1) {
line.setColor(Color.RED);
} else if (entryNumber % 4 == 2) {
line.setColor(Color.MAGENTA);
} else if (entryNumber % 4 == 3) {
line.setColor(Color.BLACK);
}
add(line);
}
/* Add label with the name and ranking */
for (int i = 0; i < NDECADES; i++) {
String name = entry.getName();
int position = entry.getRank(i);
String positionString = Integer.toString(position);
String label = name + " " + positionString;
double x = i * (getWidth() / NDECADES) + 10;
double x1 = x - NDECADES;
double y;
int R = 5;
if (position != 0) {
y = GRAPH_MARGIN_SIZE + (getHeight() - GRAPH_MARGIN_SIZE * 2) * position / MAX_RANK;
} else {
/* Add "*" if name was not used and remove marker point */
label = name + " *";
y = getHeight() - GRAPH_MARGIN_SIZE - 10;
R = 0;
}
/* Add marker point */
GOval marker = new GOval(x1, y - 2, R, R); /* Got "y-2" by scientific research =) */
marker.setFilled(true);
GLabel nameLabel = new GLabel(label, x, y);
nameLabel.setFont(new Font("Times Roman", Font.BOLD, 12));
/* Set label color */
if (entryNumber % 4 == 0) {
nameLabel.setColor(Color.BLUE);
marker.setColor(Color.BLUE);
} else if (entryNumber % 4 == 1) {
nameLabel.setColor(Color.RED);
marker.setColor(Color.RED);
} else if (entryNumber % 4 == 2) {
nameLabel.setColor(Color.MAGENTA);
marker.setColor(Color.MAGENTA);
} else if (entryNumber % 4 == 3) {
nameLabel.setColor(Color.BLACK);
marker.setColor(Color.BLACK);
}
add(nameLabel);
add(marker);
}
}
