DHBW/Programmieren-2-Kontaktdatenbank
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Improved functions, fixed functions, refactoring

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Administrator
2021-06-21 17:46:12 +02:00
parent bc8a12661f
commit 0466ca60f6
8 changed files with 534 additions and 205 deletions
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68
src/de/dhbw/contactdb/utils/Parser.java
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@@ -1,8 +1,8 @@
package de.dhbw.contactdb.utils;
import de.dhbw.contactdb.Besuch;
import de.dhbw.contactdb.Place;
import de.dhbw.contactdb.Visit;
import de.dhbw.contactdb.Main;
import de.dhbw.contactdb.Ort;
import de.dhbw.contactdb.Person;
import java.io.BufferedReader;
@@ -11,41 +11,81 @@ import java.io.InputStream;
import java.io.InputStreamReader;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeParseException;
/**
* Parser for parsing contacts2021.db
*
* @author florian kaiser
* @version 1.0
* @since 21.06.2021
*/
public class Parser {
/**
* Saves type of current line in database
*/
private static db_new_entity new_entity = null;
/**
* Parses contacts.db, creates objects of content and saves these objects in HashMaps
*
* @param filename Filename and path of contacts.db
*/
public static void parse(String filename) {
InputStream db = Main.class.getResourceAsStream(filename);
if(db == null) {
System.err.println("Cannot find database!");
System.exit(-1);
System.exit(-3);
}
try (BufferedReader bf = new BufferedReader(new InputStreamReader(db))) {
String line;
while ((line = bf.readLine()) != null) {
if (line.toLowerCase().contains("new_entity")) {
if (line.toLowerCase().contains("start_date")) new_entity = db_new_entity.BESUCH;
else if (line.toLowerCase().contains("location_id")) new_entity = db_new_entity.ORT;
if (line.toLowerCase().contains("start_date")) new_entity = db_new_entity.VISIT;
else if (line.toLowerCase().contains("location_id")) new_entity = db_new_entity.PLACE;
else if (line.toLowerCase().contains("person_id")) new_entity = db_new_entity.PERSON;
continue;
}
if (new_entity == db_new_entity.BESUCH) {
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss");
LocalDateTime start = LocalDateTime.parse(line.split(",")[0].replaceAll("\"", ""), formatter);
LocalDateTime end = LocalDateTime.parse(line.split(",")[1].replaceAll("\"", ""), formatter);
Person p = Main.persons.get(Integer.parseInt(line.split(",")[2].replaceAll("\"", "")));
Ort o = Main.orte.get(Integer.parseInt(line.split(",")[3].replaceAll("\"", "")));
Main.besuche.add(new Besuch(start, end, p, o));
} else if (new_entity == db_new_entity.ORT) {
if (new_entity == db_new_entity.VISIT) {
LocalDateTime start = null;
try {
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss");
start = LocalDateTime.parse(line.split(",")[0].replaceAll("\"", ""), formatter);
} catch (DateTimeParseException e1) {
try {
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm");
start = LocalDateTime.parse(line.split(",")[0].replaceAll("\"", ""), formatter);
} catch (DateTimeParseException e2) {
System.exit(-1);
}
}
LocalDateTime end = null;
try {
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm:ss");
end = LocalDateTime.parse(line.split(",")[1].replaceAll("\"", ""), formatter);
} catch (DateTimeParseException e1) {
try {
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd'T'HH:mm");
end = LocalDateTime.parse(line.split(",")[1].replaceAll("\"", ""), formatter);
} catch (DateTimeParseException e2) {
System.exit(-1);
}
}
Person person = Main.persons.get(Integer.parseInt(line.split(",")[2].replaceAll("\"", "")));
Place place = Main.places.get(Integer.parseInt(line.split(",")[3].replaceAll("\"", "")));
Main.visits.add(new Visit(start, end, person, place));
} else if (new_entity == db_new_entity.PLACE) {
int id = Integer.parseInt(line.split(",")[0].replaceAll("\"", ""));
String name = line.split(",")[1].replaceAll("\"", "");
boolean indoor = line.split(",")[2].replaceAll("\"", "").equals("in_door");
Main.orte.put(id, new Ort(id, name, indoor));
Main.places.put(id, new Place(id, name, indoor));
} else if (new_entity == db_new_entity.PERSON) {
int id = Integer.parseInt(line.split(",")[0].replaceAll("\"", ""));
String name = line.split(",")[1].replaceAll("\"", "");

26
src/de/dhbw/contactdb/utils/db_new_entity.java
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@@ -1,5 +1,29 @@
package de.dhbw.contactdb.utils;
/**
* Used by Parser
*
* @author florian kaiser
* @version 1.0
* @since 21.06.2021
* @see de.dhbw.contactdb.utils.Parser
*/
public enum db_new_entity {
PERSON, ORT, BESUCH
/**
* Person
*/
PERSON,
/**
* Place
*/
PLACE,
/**
* Visit
*/
VISIT
}