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package org.usi2011;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
/**
* @author XKHM6852
*
*/
public final class Database {
private static Connection connection;
/** */
public static Connection getConnection() {
if (connection == null) {
createDatabase();
}
return connection;
}
private static void createDatabase() {
try {
connection = DriverManager.getConnection("jdbc:hsqldb:mem:aname",
"sa", "");
String query = "DROP TABLE game; CREATE TABLE game ( "
+ " id INT NOT NULL PRIMARY KEY, "
+ " longpollingduration INT NOT NULL, "
+ " nbusersthreshold INT NOT NULL,"
+ " questiontimeframe INT NOT NULL,"
+ " nbquestions INT NOT NULL" + ");";
Statement statement = connection.createStatement();
ResultSet resultset = statement.executeQuery(query);
connection.commit();
createUser();
} catch (SQLException e) {
System.out.println("SQL Exception " + e.getMessage());
}
}
private static void createUser() {
/*
`id` int(11) NOT NULL AUTO_INCREMENT,
`firstname` varchar(255) COLLATE utf8_bin NOT NULL,
`lastname` varchar(255) COLLATE utf8_bin NOT NULL,
`mail` varchar(255) COLLATE utf8_bin NOT NULL,
`password` varchar(255) COLLATE utf8_bin NOT NULL,
*/
try {
String query = "DROP TABLE user; CREATE TABLE user ( "
+ " id INT GENERATED BY DEFAULT AS IDENTITY, "
+ " firstname VARCHAR NOT NULL, "
+ " lastname VARCHAR NOT NULL,"
+ " mail VARCHAR NOT NULL,"
+ " password VARCHAR NOT NULL" + ");";
Statement statement = connection.createStatement();
ResultSet resultset = statement.executeQuery(query);
connection.commit();
} catch (SQLException e) {
System.out.println("SQL Exception " + e.getMessage());
}
}
}
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