public static ScoreMenu[] loadFile() {
MainWindow.initDataFile(SCORE_MENU_FILE);
DataInputStream input;
Course course;
Class tempClass;
Student student;
int[] testTime;
long[] id;
float[] score;
ScoreMenu[] scoreMenu = new ScoreMenu[20];
int count = 0;
try {
input = new DataInputStream(new FileInputStream(SCORE_MENU_FILE));
while (input.available() > 0) {
if (count >= scoreMenu.length) {
ScoreMenu[] temp = new ScoreMenu[scoreMenu.length * 2];
for (int i = 0; i < scoreMenu.length; i++) temp[i] = scoreMenu[i];
scoreMenu = temp;
}
tempClass = new Class();
tempClass.setGrade(input.readInt());
tempClass.setMajor(input.readUTF());
tempClass.setClassNumber(input.readInt());
tempClass.setStudentNumber(0);
int num = input.readInt();
for (int i = 0; i < num; i++) {
student = new Student();
student.setId(input.readLong());
student.setName(input.readUTF());
tempClass.addStudent(student);
}
course = new Course();
course.setId(input.readUTF());
course.setName(input.readUTF());
course.setCredit(input.readFloat());
course.setPeriod(input.readInt());
testTime = new int[5];
for (int i = 0; i < 5; i++) testTime[i] = input.readInt();
num = input.readInt();
id = new long[num];
score = new float[num];
for (int i = 0; i < num; i++) id[i] = input.readLong();
for (int i = 0; i < num; i++) score[i] = input.readFloat();
scoreMenu[count] = new ScoreMenu(tempClass, course, testTime, num, id, score);
count++;
}
input.close();
return scoreMenu;
} catch (Exception e) {
return null;
}
}
public static ScoreMenu queryFromFile(Class classes, Course courses) {
MainWindow.initDataFile(SCORE_MENU_FILE);
DataInputStream input;
Class tempClass = new Class();
Student student;
Course course = new Course();
int[] testTime = new int[5];
int numberOfAttendTestStudent;
long idOfStudents[];
float scoreOfTest[];
try {
input = new DataInputStream(new FileInputStream(SCORE_MENU_FILE));
while (input.available() > 0) {
tempClass.setGrade(input.readInt());
tempClass.setMajor(input.readUTF());
tempClass.setClassNumber(input.readInt());
int studentNumber = input.readInt();
tempClass.setStudentNumber(0);
for (int i = 0; i < studentNumber; i++) {
student = new Student();
student.setId(input.readLong());
student.setName(input.readUTF());
tempClass.addStudent(student);
}
course.setId(input.readUTF());
course.setName(input.readUTF());
course.setCredit(input.readFloat());
course.setPeriod(input.readInt());
for (int i = 0; i < 5; i++) testTime[i] = input.readInt();
numberOfAttendTestStudent = input.readInt();
idOfStudents = new long[numberOfAttendTestStudent];
scoreOfTest = new float[numberOfAttendTestStudent];
for (int i = 0; i < numberOfAttendTestStudent; i++) idOfStudents[i] = input.readLong();
for (int i = 0; i < numberOfAttendTestStudent; i++) scoreOfTest[i] = input.readFloat();
if ((classes.equals(tempClass)) && (courses.equals(course))) {
input.close();
return new ScoreMenu(
tempClass, course, testTime, numberOfAttendTestStudent, idOfStudents, scoreOfTest);
}
}
input.close();
return null;
} catch (Exception e) {
return null;
}
}
public boolean saveToFile() {
MainWindow.initDataFile(SCORE_MENU_FILE);
DataInputStream input;
DataOutputStream output;
Class tempClass = new Class();
Student student = new Student();
Course course = new Course();
int[] testTime = new int[5];
int numberOfAttendTestStudent;
long idOfStudents[];
float scoreOfTest[];
try {
input = new DataInputStream(new FileInputStream(SCORE_MENU_FILE));
while (input.available() > 0) {
tempClass.setGrade(input.readInt());
tempClass.setMajor(input.readUTF());
tempClass.setClassNumber(input.readInt());
int studentNumber = input.readInt();
tempClass.setStudentNumber(0);
for (int i = 0; i < studentNumber; i++) {
student.setId(input.readLong());
student.setName(input.readUTF());
}
course.setId(input.readUTF());
course.setName(input.readUTF());
course.setCredit(input.readFloat());
course.setPeriod(input.readInt());
for (int i = 0; i < 5; i++) testTime[i] = input.readInt();
numberOfAttendTestStudent = input.readInt();
idOfStudents = new long[numberOfAttendTestStudent];
scoreOfTest = new float[numberOfAttendTestStudent];
for (int i = 0; i < numberOfAttendTestStudent; i++) idOfStudents[i] = input.readLong();
for (int i = 0; i < numberOfAttendTestStudent; i++) scoreOfTest[i] = input.readFloat();
if ((this.classOfScoreMenu.equals(tempClass)) && (this.course.equals(course))) {
input.close();
return false;
}
}
input.close();
output = new DataOutputStream(new FileOutputStream(SCORE_MENU_FILE, true));
output.writeInt(this.classOfScoreMenu.getGrade());
output.writeUTF(this.classOfScoreMenu.getMajor());
output.writeInt(this.classOfScoreMenu.getClassNumber());
int num = this.classOfScoreMenu.getStudentNumber();
output.writeInt(num);
Student[] students = this.classOfScoreMenu.getStudents();
for (int i = 0; i < num; i++) {
output.writeLong(students[i].getId());
output.writeUTF(students[i].getName());
}
output.writeUTF(this.course.getId());
output.writeUTF(this.course.getName());
output.writeFloat(this.course.getCredit());
output.writeInt(this.course.getPeriod());
for (int i = 0; i < 5; i++) output.writeInt(this.testTime[i]);
output.writeInt(this.numberOfAttendTestStudent);
for (int i = 0; i < this.numberOfAttendTestStudent; i++)
output.writeLong(this.idOfStudents[i]);
for (int i = 0; i < this.numberOfAttendTestStudent; i++)
output.writeFloat(this.scoreOfTest[i]);
output.close();
return true;
} catch (Exception e) {
return false;
}
}