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Major refactor of reading from excel to db

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This commit is contained in:
Maciek Głowacki
2020-09-21 17:45:52 +02:00
parent e91965e9b5
commit c449bc22e1
16 changed files with 158 additions and 167 deletions
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8
buisnesslogic/src/main/java/com/plannaplan/configutils/FileReader.java
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@ -2,7 +2,7 @@ package com.plannaplan.configutils;
import java.io.IOException;
import java.io.InputStream;
import java.util.Hashtable;
import java.util.HashMap;
import java.util.Iterator;
import org.apache.poi.xssf.usermodel.XSSFSheet;
@ -22,7 +22,7 @@ public class FileReader {
public FileData read() {
FileData result = null;
try {
InputStream fis = this.fileInputStream;
XSSFWorkbook workbook = new XSSFWorkbook(fis);
@ -33,12 +33,12 @@ public class FileReader {
Row row = rowIt.next();
Iterator<Cell> cellIt = row.cellIterator();
Hashtable<String, Integer> keys = new Hashtable<>();
HashMap<String, Integer> keys = new HashMap<>();
int index = 0;
while (cellIt.hasNext()) {
Cell c = cellIt.next();
keys.put(c.toString(), index);
index+=1;
index += 1;
}
rowIt.remove();

176
buisnesslogic/src/main/java/com/plannaplan/configutils/FileToDatabaseMigrator.java
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@ -1,7 +1,6 @@
package com.plannaplan.configutils;
import java.util.Iterator;
import com.plannaplan.entities.Course;
import com.plannaplan.entities.Groups;
import com.plannaplan.entities.Lecturer;
@ -9,140 +8,101 @@ import com.plannaplan.models.FileData;
import com.plannaplan.services.CourseService;
import com.plannaplan.services.GroupService;
import com.plannaplan.services.LecturerService;
import com.plannaplan.types.GroupType;
import com.plannaplan.types.WeekDay;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.Row;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
@Component
public class FileToDatabaseMigrator {
public static String LECTURER_NAME_STRING = "imie";
public static String LECTURER_SURNAME_STRING = "nazwisko";
public static String LECTURER_TITLE_STRING = "tytul";
// only used in this class, compile-time constants
private static final String LECTURER_NAME_STRING = "imie";
private static final String LECTURER_SURNAME_STRING = "nazwisko";
private static final String LECTURER_TITLE_STRING = "tytul";
public static String COURSE_SYMBOL_STRING = "sym";
public static String COURSE_NAME_STRING = "nazwa";
private static final String COURSE_SYMBOL_STRING = "sym";
private static final String COURSE_NAME_STRING = "nazwa";
public static String GROUP_DAY_STRING = "dzien";
public static String GROUP_TIME_STRING = "godz_od";
public static String ROOM_STRING = "sala";
public static String CAPACITY_STRING = "Mc";
private static final String groupDay_STRING = "dzien";
private static final String GROUP_TIME_STRING = "godz_od";
private static final String ROOM_STRING = "sala";
private static final String CAPACITY_STRING = "Mc";
LecturerService lecturerService;
CourseService courseService;
GroupService groupService;
// why no specifier, should it be default or is it an error???
// could you use @autowired annotation here???
@Autowired
private LecturerService lecturerService;
@Autowired
private CourseService courseService;
@Autowired
private GroupService groupService;
public FileToDatabaseMigrator(LecturerService lecturerService, CourseService courseService,
GroupService groupService) {
this.lecturerService = lecturerService;
this.groupService = groupService;
this.courseService = courseService;
// public FileToDatabaseMigrator(LecturerService lecturerService, CourseService
// courseService,
// GroupService groupService) {
// this.lecturerService = lecturerService;
// this.groupService = groupService;
// this.courseService = courseService;
// }
public FileToDatabaseMigrator() {
}
public void migrate(FileData data) {
Iterator<Row> rows = data.getRows();
// why it looks like a python code xDD. To be consistent should use camelCase
int courseNameIndex = data.getIndexOf(FileToDatabaseMigrator.COURSE_NAME_STRING);
int symbolIndex = data.getIndexOf(FileToDatabaseMigrator.COURSE_SYMBOL_STRING);
int course_name_index = data.getIndexOf(FileToDatabaseMigrator.COURSE_NAME_STRING);
int sym_index = data.getIndexOf(FileToDatabaseMigrator.COURSE_SYMBOL_STRING);
int titleIndex = data.getIndexOf(FileToDatabaseMigrator.LECTURER_TITLE_STRING);
int surnameIndex = data.getIndexOf(FileToDatabaseMigrator.LECTURER_SURNAME_STRING);
int nameIndex = data.getIndexOf(FileToDatabaseMigrator.LECTURER_NAME_STRING);
int title_index = data.getIndexOf(FileToDatabaseMigrator.LECTURER_TITLE_STRING);
int surname_index = data.getIndexOf(FileToDatabaseMigrator.LECTURER_SURNAME_STRING);
int name_index = data.getIndexOf(FileToDatabaseMigrator.LECTURER_NAME_STRING);
int day_index = data.getIndexOf(FileToDatabaseMigrator.GROUP_DAY_STRING);
int time_index = data.getIndexOf(FileToDatabaseMigrator.GROUP_TIME_STRING);
int room_index = data.getIndexOf(FileToDatabaseMigrator.ROOM_STRING);
int capacity_index = data.getIndexOf(FileToDatabaseMigrator.CAPACITY_STRING);
int dayIndex = data.getIndexOf(FileToDatabaseMigrator.groupDay_STRING);
int timeIndex = data.getIndexOf(FileToDatabaseMigrator.GROUP_TIME_STRING);
int roomIndex = data.getIndexOf(FileToDatabaseMigrator.ROOM_STRING);
int capacityIndex = data.getIndexOf(FileToDatabaseMigrator.CAPACITY_STRING);
while (rows.hasNext()) {
Row row = rows.next();
Cell course_name_cell = row.getCell(course_name_index);
Cell sym = row.getCell(sym_index);
String courseName = row.getCell(courseNameIndex).toString().trim();
String symbol = row.getCell(symbolIndex).toString().trim();
Cell title_cell = row.getCell(title_index);
Cell name_cell = row.getCell(name_index);
Cell surname_cell = row.getCell(surname_index);
String lecturerTitle = row.getCell(titleIndex) != null ? row.getCell(titleIndex).toString().trim() : "";
String lecturerName = row.getCell(nameIndex) != null ? row.getCell(nameIndex).toString(). trim() : "";
String lecturerSurname = row.getCell(surnameIndex) != null ? row.getCell(surnameIndex).toString().trim() : "";
Cell day_cell = row.getCell(day_index);
Cell time_cell = row.getCell(time_index);
Cell room_cell = row.getCell(room_index);
Cell capacity_cell = row.getCell(capacity_index);
// why isn't it parsed to int but first to double and then to int??? it looks a
// bit cryptic
int day = Integer.parseInt(row.getCell(dayIndex).toString());
WeekDay groupDay = WeekDay.getDay(day - 1);
int time = parseTimeToInt(row.getCell(timeIndex).toString());
String room = row.getCell(roomIndex).toString().trim();
// why isn't it parsed to int but first to double and then to int??? it looks a
// bit cryptic
int capacity = Integer.parseInt(row.getCell(capacityIndex).toString());
String lecturer_title = "";
String lecturer_surname = "";
String lecturer_name = "";
// more idiomatic way to handling nulls is optional
// why not use this in here???
Course course = this.courseService.getCourseByName(courseName)
.orElseGet(() -> this.courseService.save(new Course(courseName, symbol)));
String course_name = course_name_cell.toString().trim();
String sym_str = sym.toString().trim();
Lecturer lecturer = this.lecturerService.getLecturer(lecturerTitle, lecturerName, lecturerSurname)
.orElseGet(() -> this.lecturerService
.save(new Lecturer(lecturerTitle, lecturerName, lecturerSurname)));
int day = (int) Double.parseDouble(day_cell.toString());
WeekDay group_day = WeekDay.getDay(day - 1);
String room = room_cell.toString().trim();
int time = this.parseTimeToInt(time_cell.toString());
int capacity = (int) Double.parseDouble(capacity_cell.toString());
Groups group = groupService.find(time, capacity, room);
Course course = this.courseService.getCourseByName(course_name);
if (course == null) {
course = new Course();
course.setName(course_name);
course.setSymbol(sym_str);
}
courseService.save(course);
if (title_cell != null) {
lecturer_title = title_cell.toString().trim();
}
if (name_cell != null) {
lecturer_name = name_cell.toString().trim();
}
if (surname_cell != null) {
lecturer_surname = surname_cell.toString().trim();
}
Lecturer lecturer = lecturerService.getLecturer(lecturer_title, lecturer_name, lecturer_surname);
if (lecturer == null) {
lecturer = new Lecturer(lecturer_title, lecturer_name, lecturer_surname);
lecturerService.save(lecturer);
}
if (group == null) {
group = new Groups();
group.setCapacity(capacity);
group.setRoom(room);
group.setCourseId(course);
group.setTime(time);
if (capacity >= 50) {
group.setType(GroupType.LECTURE);
} else {
group.setType(GroupType.CLASS);
}
group.setDay(group_day);
group.setLecturer(lecturer);
groupService.save(group);
}
Groups group = this.groupService.find(time, capacity, room).orElseGet(
() -> this.groupService.save(new Groups(capacity, room, course, time, groupDay, lecturer)));
}
}
// why this method is private??? I think it should be static
private static int parseTimeToInt(String time) {
// why not combine regexes??
String times[] = time.split("\\.|\\:");
return times.length == 2 ? Integer.parseInt(times[0]) * 60 + Integer.parseInt(times[1]) : 0;
private Integer parseTimeToInt(String time) {
String times[] = time.split("\\.");
if (times.length == 2) {
return Integer.parseInt(times[0]) * 60 + Integer.parseInt(times[1]);
}
times = time.split("\\:");
if (times.length == 2) {
return Integer.parseInt(times[0]) * 60 + Integer.parseInt(times[1]);
}
return 0;
}
}