Module com.prog3.ipt

Package com.prog3.ipt.Model.FacadeClasses

Class DatabaseConnectionSingleton

java.lang.Object

com.prog3.ipt.Model.FacadeClasses.DatabaseConnectionSingleton

public class DatabaseConnectionSingleton
extends Object

DatabaseConnectionSingleton interfaces with a MySQL Database Schema for IPT system, applying the Singleton design pattern

Field Summary

Fields

Modifier and Type	Field	Description
private Connection	connection
private static DatabaseConnectionSingleton	instance
private final String	password
private final String	url
private final String	username

Constructor Summary

Constructors

Modifier	Constructor	Description
private	DatabaseConnectionSingleton()	DatabaseConnectionSingleton constructor.

Method Summary

Modifier and Type	Method	Description
Connection	getConnection()
static DatabaseConnectionSingleton	getInstance()	Returns the DatabaseConnectionSingleton instance The instance doesn't get created until the method is called for the first time.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Details

instance

private static DatabaseConnectionSingleton instance

connection

private Connection connection

url

private final String url

See Also:

• Constant Field Values

username

private final String username

See Also:

• Constant Field Values

password

private final String password

See Also:

• Constant Field Values

Constructor Details

DatabaseConnectionSingleton

private DatabaseConnectionSingleton()

DatabaseConnectionSingleton constructor. Set up a connection passing url, username, password to DriverManager's getConnection method Protect against instantiation via reflection

See Also:

• DriverManager.getConnection(String, String, String)

Method Details

getConnection

public Connection getConnection()

getInstance

public static DatabaseConnectionSingleton getInstance()

Returns the DatabaseConnectionSingleton instance The instance doesn't get created until the method is called for the first time.

Returns:

A reference to a DatabaseConnectionSingleton object