package org.homelinux.largo.sql.client;

import java.sql.Connection;

import java.sql.DriverManager;

import java.sql.ResultSet;

import java.sql.Statement;

import javax.naming.Context;

import javax.naming.InitialContext;

import javax.sql.DataSource;

public class DBClient {

	private Connection connection;

	private Statement statement;

	private ResultSet resultset;

	private String driver, username, password;

	private String dbURL;

	/**

	 * Default Konstruktor to connect to my database

	 */

	public DBClient () throws Exception {

		this.driver = "org.apache.derby.jdbc.EmbeddedDriver";

		this.dbURL = "jdbc:derby://localhost/clubstatistik";

		this.username = null;

		this.password = null;

		Class.forName (driver);

		connection = DriverManager.getConnection (dbURL, username, password);

		statement = connection.createStatement ();

	}

	/**

	 * Default Konstruktor to connect to my DataPool

	 */ 

	public DBClient (String jndiResource) throws Exception {

		Context ctx = new InitialContext ();

		DataSource ds = (DataSource) ctx.lookup (jndiResource);

		connection = ds.getConnection ();

		statement = connection.createStatement ();

	}

	/**

	 * Default Konstruktor to connect to my database with auth-data

	 */ 	 

	public DBClient (String driver, String dbURL, String username, String password) throws Exception {

		this.driver = driver;

		this.dbURL = dbURL;

		this.username = username;

		this.password = password;

		Class.forName (driver);

		connection = DriverManager.getConnection (dbURL, username, password);

		statement = connection.createStatement ();

	} 

	public void close () throws Exception {

		connection.close ();

	} 

	public String getColumn (int pos) throws Exception {

		return resultset.getString (pos);

	} 

	public String getColumn (String name) throws Exception {

		return resultset.getString (name);

	} 

	public Connection getConnection () {

		return connection;

	} 

	public String getDbURL () {

		return dbURL;

	}

	public String getDriver () {

		return driver;

	}

	public String getPassword () {

		return password;

	}

	public String getUsername () {

		return username;

	}

	public boolean hasNext () throws Exception {

		return resultset.next ();

	}

	public void query (String query) throws Exception {

		resultset = statement.executeQuery (query);

	} 

	public void setConnection (Connection connection) {

		this.connection = connection;

	}

	public void setDbURL (String dbURL) {

		this.dbURL = dbURL;

	}

	public void setDriver (String driver) {

		this.driver = driver;

	}

	public void setPassword (String password) {

		this.password = password;

	}

	public void setUsername (String username) {

		this.username = username;

	}

}