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DataManager.java
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DataManager.java
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package phoenix;
/** To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayList;
public class DataManager {
public ArrayList<Instructors> readInstructors(String addr){
String line = "";
String cvsSplitBy = ",";
ArrayList<Instructors> instructors = new ArrayList<Instructors>();
try{
BufferedReader br = new BufferedReader(new FileReader(addr));
line = br.readLine();
while ((line = br.readLine()) != null) {
Instructors i =new Instructors();
String[] sec = line.split(cvsSplitBy);
i.name=sec[0];
i.expertise1=sec[1];
if(sec.length==5){
i.expertise2=sec[2];
i.expertise3=sec[3];
i.expertise4=sec[4];
}
else if(sec.length==4){
i.expertise2=sec[2];
i.expertise3=sec[3];
i.expertise4="0";
}
else if(sec.length==3){
i.expertise2=sec[2];
i.expertise3="0";
i.expertise4="0";
}
instructors.add(i);
}
br.close();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(instructors.get(11).expertise1);
return instructors;
}
public ArrayList<Courses> readCourses(String addr){
String line = "";
String cvsSplitBy = ",";
ArrayList<Courses> courses = new ArrayList<Courses>();
try{
BufferedReader br = new BufferedReader(new FileReader(addr));
line = br.readLine();
while ((line = br.readLine()) != null) {
Courses c = new Courses();
String[] sec = line.split(cvsSplitBy);
c.code=sec[0];
c.name=sec[1];
c.contact_slots= Integer.parseInt(sec[2]);
c.course_type=sec[3];
c.resource_type=sec[4];
if(sec.length==6){
c.association= sec[5];
}
else{
c.association="Null";
}
courses.add(c);
}
br.close();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(courses.get(11).name);
return courses;
}
public ArrayList<Rooms> readRooms(String add){
String csvFile = add;
String line = "";
String cvsSplitBy = ",";
ArrayList<Rooms> rooms = new ArrayList<Rooms>();
try{
BufferedReader br = new BufferedReader(new FileReader(csvFile));
line = br.readLine();
while ((line = br.readLine()) != null) {
// use comma as separator
Rooms r = new Rooms();
String[] sec = line.split(cvsSplitBy);
r.resource=sec[0];
r.type=sec[1];
r.capacity=Integer.parseInt(sec[2]);
rooms.add(r);
}
br.close();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(rooms.get(0).capacity);
return rooms;
}
public ArrayList<Sections> readSections(String add){
//sections[] section;
String csvFile = add;
String line = "";
String cvsSplitBy = ",";
ArrayList<Sections> sections = new ArrayList<Sections>();
try{
BufferedReader br = new BufferedReader(new FileReader(csvFile));
line = br.readLine();
while ((line = br.readLine()) != null) {
// use comma as separator
Sections s = new Sections();
String[] sec = line.split(cvsSplitBy);
s.year=Integer.parseInt(sec[0]);
s.section=sec[1];
s.labsection=sec[2];
s.enrolment=Integer.parseInt(sec[3]);
sections.add(s);
}
br.close();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(sections.get(11).labsection);
return sections;
}
public ArrayList<Timeslots> readTimeslots(String add){
String csvFile = add;
String line = "";
String cvsSplitBy = ",";
ArrayList<Timeslots> timeslots = new ArrayList<Timeslots>();
try{
BufferedReader br = new BufferedReader(new FileReader(csvFile));
line = br.readLine();
while ((line = br.readLine()) != null) {
// use comma as separator
Timeslots t = new Timeslots();
String[] sec = line.split(cvsSplitBy);
t.day_of_week=sec[0];
t.slot=Integer.parseInt(sec[1]);
t.start_time=(sec[2]);
t.end_time=(sec[3]);
timeslots.add(t);
}
br.close();
} catch (IOException e) {
e.printStackTrace();
}
System.out.println(timeslots.get(11).day_of_week);
return timeslots;
}
public void editor(ArrayList<Courses> courses,ArrayList<Instructors> instructors,int[][] cat)throws FileNotFoundException
{
PrintWriter pw = new PrintWriter(new File("C:/Users/ANJALI/Desktop/java_project/test.csv"));
StringBuilder sb = new StringBuilder();
sb.append("Teachers");
sb.append(",");
for(int i=0;i<courses.size();i++){
sb.append(courses.get(i).name);
sb.append(",");
}
sb.append('\n');
for(int i=0;i<instructors.size();i++){
sb.append(instructors.get(i).name);
sb.append(",");
for(int j=0;j<courses.size();j++){
if(cat[i][j]==0)
{
sb.append("-");
}
else{
sb.append( Integer.toString((cat[i][j])));
}
sb.append(",");
}
sb.append('\n');
}
pw.write(sb.toString());
pw.close();
System.out.println("Task Done !");
}
}