66 lines
2.0 KiB
Java
66 lines
2.0 KiB
Java
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.PreparedStatement;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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public class Database {
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//Countries
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public static String COUNTRY_ID = "id";
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public static String COUNTRY_NAME = "name";
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//Votes table
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public static String VOTES_COMPETITOR_ID = "competitor_id";
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public static String VOTES_VOTER_ID = "voter_id";
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public static String VOTES_POINTS = "points";
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private Connection connection;
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public Database() {
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try {
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Class.forName("org.mariadb.jdbc.Driver");
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this.connection = DriverManager.getConnection(
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"jdbc:mariadb://dwarves.iut-fbleau.fr/baudrier",
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"baudrier",
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"baudrier"
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);
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} catch(ClassNotFoundException exception) {
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System.err.println("Class 'org.mariadb.jdbc.Driver' not found.");
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} catch(SQLException exception) {
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System.err.println("Error while trying to connect to the database");
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}
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}
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public ResultSet getVotesFromCompetitor(String country) {
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try {
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PreparedStatement query = this.connection.prepareStatement(
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"SELECT Countries.name, Countries.points FROM Votes INNER JOIN Countries ON Votes.competitor_id = Countries.id WHERE Votes.competitor_id = Countries.id"
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);
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ResultSet result = query.executeQuery();
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try {
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query.close();
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} catch(SQLException exception) {
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System.err.println("Error while trying to close the query.");
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}
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return result;
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} catch(SQLException exception) {
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System.err.println("Error while trying to prepare or execute the query.");
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}
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return null;
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}
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public void close() {
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try {
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this.connection.close();
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} catch(SQLException exception) {
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System.err.println("Error while trying to close the connection.");
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}
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}
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}
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