minhtrannhat/comp353_assignment1
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feat: decoupled donors generation from main

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minhtrannhat 2024-07-09 15:14:35 -04:00
parent fdaf9c3bdf
commit 15c1cc4f18
Signed by: minhtrannhat
GPG Key ID: E13CFA85C53F8062
3 changed files with 133 additions and 119 deletions
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src/main/java/org/example/DonorsGenerator.java Normal file
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@ -0,0 +1,122 @@
package org.example;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.Calendar;
import java.util.Random;
public class DonorsGenerator {
static final String[] CITIES = {"Montreal", "Laval", "Brossard"};
static final String[] GENDERS = {"M", "F", "U"};
private static final String[] STREET_NAMES = {
"Pine", "Oak", "Lakeview", "Sunset", "Forest", "River", "Spring",
"Main", "First", "Wind", "Park", "Maple", "Elm", "Cerulean"
};
protected static final String[] HOBBIES = {
"Hiking", "Skiing", "Swimming", "Bird watching", "Racing", "Walking", "Gaming",
};
private final Random RANDOM;
private static Connection conn;
private final int count;
public DonorsGenerator(int recordCount, Connection conn, Random random) {
DonorsGenerator.conn = conn;
count = recordCount;
RANDOM = random;
}
public void insertDonors() throws SQLException {
String sql = "INSERT INTO Donors (donorID, firstName, lastName, middleInitial, dateOfBirth, address, city, postalCode, province, gender, SSN, hobby, phone, email) " +
"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
PreparedStatement pstmt = conn.prepareStatement(sql);
for (int i = 1; i <= count; i++) {
pstmt.setInt(1, i); // donorID
pstmt.setString(2, randomString(5));
pstmt.setString(3, randomString(7));
pstmt.setString(4, randomInitial());
pstmt.setDate(5, randomDateOfBirth());
pstmt.setString(6, randomAddress());
pstmt.setString(7, randomCities()); // city (static data for simplicity)
pstmt.setString(8, randomPostalCode()); // postalCode (static data for simplicity)
pstmt.setString(9, "QC"); // province
pstmt.setString(10, randomGender()); // gender
pstmt.setString(11, randomSSN()); // SSN
pstmt.setString(12, randomHobbies()); // hobby (static data for simplicity)
pstmt.setString(13, "1234567890"); // phone (static data for simplicity)
pstmt.setString(14, "email" + i + "@example.com"); // email (static data for simplicity)
pstmt.addBatch();
}
pstmt.executeBatch(); // Execute all inserts as a batch
pstmt.close();
}
private static String randomString(int length) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < length; i++) {
char c = (char) (RANDOM.nextInt(26) + 'a');
sb.append(c);
}
return sb.toString();
}
private static String randomInitial() {
return RANDOM.nextBoolean() ? String.valueOf((char) (RANDOM.nextInt(26) + 'a')) : null;
}
private static java.sql.Date randomDateOfBirth() {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.YEAR, 1975 + RANDOM.nextInt(50));
calendar.set(Calendar.MONTH, RANDOM.nextInt(12));
calendar.set(Calendar.DAY_OF_MONTH, RANDOM.nextInt(28) + 1);
return new java.sql.Date(calendar.getTimeInMillis());
}
public static String randomAddress() {
int civicNumber = RANDOM.nextInt(1000) + 1; // Random number between 1 and 1000
String streetName = STREET_NAMES[RANDOM.nextInt(STREET_NAMES.length)]; // Random street name
return civicNumber + " " + streetName + " Street";
}
private static String randomGender() {
return GENDERS[RANDOM.nextInt(GENDERS.length)];
}
private static String randomCities() {
return CITIES[RANDOM.nextInt(CITIES.length)];
}
private static String randomHobbies() {
return HOBBIES[RANDOM.nextInt(HOBBIES.length)];
}
private static String randomSSN() {
return (RANDOM.nextInt(999) + 1) + "-" +
(RANDOM.nextInt(999) + 1) + "-" +
(RANDOM.nextInt(999) + 1);
}
public static String randomPostalCode() {
// Generate first segment (letter digit letter)
return String.valueOf((char) (RANDOM.nextInt(26) + 'A')) +
RANDOM.nextInt(10) +
(char) (RANDOM.nextInt(26) + 'A') +
" " +
// Generate second segment (digit letter digit)
RANDOM.nextInt(10) +
(char) (RANDOM.nextInt(26) + 'A') +
RANDOM.nextInt(10);
}
}

128
src/main/java/org/example/Main.java
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@ -1,39 +1,31 @@
package org.example; package org.example;
import java.sql.*; import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.util.Random; import java.util.Random;
import java.util.Calendar;
public class Main { public class Main {
// change the DB_URL accordingly // change the DB_URL accordingly
static final String HOST = "localhost"; static final String HOST = "localhost";
static final String PORT = "32776"; static final String PORT = "32772";
static final String DATABASE_NAME = "assignment1"; static final String DATABASE_NAME = "assignment1";
static final String DB_URL = "jdbc:mysql://" + HOST + ":" + PORT + "/" + DATABASE_NAME; static final String DB_URL = "jdbc:mysql://" + HOST + ":" + PORT + "/" + DATABASE_NAME;
static final String USER = "root"; static final String USER = "root";
static final String PASSWORD = "secret"; static final String PASSWORD = "secret";
static final String[] PROVINCES = {"AB", "BC", "MB", "NB", "NL", "NS", "NT", "NU", "ON", "PE", "QC", "SK", "YT"};
static final String[] CITIES = {"Montreal", "Laval", "Brossard"};
static final String[] GENDERS = {"M", "F", "U"};
private static final String[] STREET_NAMES = {
"Pine", "Oak", "Lakeview", "Sunset", "Forest", "River", "Spring",
"Main", "First", "Wind", "Park", "Maple", "Elm", "Cerulean"
};
private static final String[] HOBBIES = {
"Hiking", "Skiing", "Swiming", "Bird watching", "Racing", "Walking", "Gaming",
};
private static final Random RANDOM = new Random(); private static final Random RANDOM = new Random();
public static void main(String[] args) { public static void main(String[] args) {
try { try {
int numOfDonors = 5000;
Connection conn = DriverManager.getConnection(DB_URL, USER, PASSWORD); Connection conn = DriverManager.getConnection(DB_URL, USER, PASSWORD);
insertDonors(conn, numOfDonors);
// generate 500 Donors
DonorsGenerator donorsGenerator = new DonorsGenerator(500, conn, RANDOM);
donorsGenerator.insertDonors();
conn.close(); conn.close();
System.out.println("Insertions to Donors were successful"); System.out.println("Insertions to Donors were successful");
@ -41,104 +33,4 @@ public class Main {
e.printStackTrace(); e.printStackTrace();
} }
} }
private static void insertDonors(Connection conn, int count) throws SQLException {
String sql = "INSERT INTO Donors (donorID, firstName, lastName, middleInitial, dateOfBirth, address, city, postalCode, province, gender, SSN, hobby, phone, email) " +
"VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)";
PreparedStatement pstmt = conn.prepareStatement(sql);
for (int i = 1; i <= count; i++) {
pstmt.setInt(1, i); // donorID
pstmt.setString(2, randomString(5));
pstmt.setString(3, randomString(7));
pstmt.setString(4, randomInitial());
pstmt.setDate(5, randomDateOfBirth());
pstmt.setString(6, randomAddress());
pstmt.setString(7, randomCities()); // city (static data for simplicity)
pstmt.setString(8, randomPostalCode()); // postalCode (static data for simplicity)
pstmt.setString(9, randomProvince()); // province
pstmt.setString(10, randomGender()); // gender
pstmt.setString(11, randomSSN()); // SSN
pstmt.setString(12, randomHobbies()); // hobby (static data for simplicity)
pstmt.setString(13, "1234567890"); // phone (static data for simplicity)
pstmt.setString(14, "email" + i + "@example.com"); // email (static data for simplicity)
pstmt.addBatch();
}
pstmt.executeBatch(); // Execute all inserts as a batch
pstmt.close();
}
private static String randomString(int length) {
StringBuilder sb = new StringBuilder();
for (int i = 0; i < length; i++) {
char c = (char) (RANDOM.nextInt(26) + 'a');
sb.append(c);
}
return sb.toString();
}
private static String randomInitial() {
return RANDOM.nextBoolean() ? String.valueOf((char) (RANDOM.nextInt(26) + 'a')) : null;
}
private static java.sql.Date randomDateOfBirth() {
Calendar calendar = Calendar.getInstance();
calendar.set(Calendar.YEAR, 1950 + RANDOM.nextInt(50)); // Random year between 1950 and 1999
calendar.set(Calendar.MONTH, RANDOM.nextInt(12)); // Random month
calendar.set(Calendar.DAY_OF_MONTH, RANDOM.nextInt(28) + 1); // Random day (considering 28 days in a month)
return new java.sql.Date(calendar.getTimeInMillis());
}
public static String randomAddress() {
int civicNumber = RANDOM.nextInt(1000) + 1; // Random number between 1 and 1000
String streetName = STREET_NAMES[RANDOM.nextInt(STREET_NAMES.length)]; // Random street name
return civicNumber + " " + streetName + " Street";
}
private static String randomProvince() {
return PROVINCES[RANDOM.nextInt(PROVINCES.length)];
}
private static String randomGender() {
return GENDERS[RANDOM.nextInt(GENDERS.length)];
}
private static String randomCities() {
return CITIES[RANDOM.nextInt(CITIES.length)];
}
private static String randomHobbies() {
return HOBBIES[RANDOM.nextInt(HOBBIES.length)];
}
private static String randomSSN() {
StringBuilder sb = new StringBuilder();
sb.append(RANDOM.nextInt(999) + 1).append("-");
sb.append(RANDOM.nextInt(99) + 1).append("-");
sb.append(RANDOM.nextInt(9999) + 1);
return sb.toString();
}
public static String randomPostalCode() {
StringBuilder postalCode = new StringBuilder();
// Generate first segment (letter digit letter)
postalCode.append((char) (RANDOM.nextInt(26) + 'A')); // First letter (A-Z)
postalCode.append(RANDOM.nextInt(10)); // First digit (0-9)
postalCode.append((char) (RANDOM.nextInt(26) + 'A')); // Second letter (A-Z)
// Space separator (optional, in the Canadian postal code format)
postalCode.append(" ");
// Generate second segment (digit letter digit)
postalCode.append(RANDOM.nextInt(10)); // First digit (0-9)
postalCode.append((char) (RANDOM.nextInt(26) + 'A')); // First letter (A-Z)
postalCode.append(RANDOM.nextInt(10)); // Second digit (0-9)
return postalCode.toString();
}
} }