javadb/org/homelinux/largo/sql/client/DBClient.java
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package org.homelinux.largo.sql.client;
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import java.sql.Connection;
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import java.sql.DriverManager;
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import java.sql.ResultSet;
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import java.sql.Statement;
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import javax.naming.Context;
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import javax.naming.InitialContext;
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import javax.sql.DataSource;
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public class DBClient {
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	private Connection connection;
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	private Statement statement;
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	private ResultSet resultset;
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	private String driver, username, password;
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	private String dbURL;
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	/**
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	 * Default Konstruktor to connect to my database
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	 */
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	public DBClient () throws Exception {
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		this.driver = "org.apache.derby.jdbc.EmbeddedDriver";
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		this.dbURL = "jdbc:derby://localhost/clubstatistik";
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		this.username = null;
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		this.password = null;
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		Class.forName (driver);
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		connection = DriverManager.getConnection (dbURL, username, password);
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		statement = connection.createStatement ();
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	}
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	/**
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	 * Default Konstruktor to connect to my DataPool
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	 */
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	public DBClient (String jndiResource) throws Exception {
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		Context ctx = new InitialContext ();
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		DataSource ds = (DataSource) ctx.lookup (jndiResource);
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		connection = ds.getConnection ();
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		statement = connection.createStatement ();
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	}
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	/**
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	 * Default Konstruktor to connect to my database with auth-data
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	 */
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	public DBClient (String driver, String dbURL, String username, String password) throws Exception {
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		this.driver = driver;
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		this.dbURL = dbURL;
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		this.username = username;
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		this.password = password;
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		Class.forName (driver);
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		connection = DriverManager.getConnection (dbURL, username, password);
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		statement = connection.createStatement ();
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	}
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	public void close () throws Exception {
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		connection.close ();
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	}
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	public String getColumn (int pos) throws Exception {
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		return resultset.getString (pos);
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	}
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	public String getColumn (String name) throws Exception {
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		return resultset.getString (name);
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	}
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	public Connection getConnection () {
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		return connection;
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	}
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	public String getDbURL () {
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		return dbURL;
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	}
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	public String getDriver () {
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		return driver;
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	}
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	public String getPassword () {
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		return password;
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	}
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	public String getUsername () {
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		return username;
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	}
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	public boolean hasNext () throws Exception {
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		return resultset.next ();
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	}
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	public void query (String query) throws Exception {
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		resultset = statement.executeQuery (query);
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	}
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	public void setConnection (Connection connection) {
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		this.connection = connection;
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	}
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	public void setDbURL (String dbURL) {
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		this.dbURL = dbURL;
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	}
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	public void setDriver (String driver) {
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		this.driver = driver;
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	}
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	public void setPassword (String password) {
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		this.password = password;
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	}
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	public void setUsername (String username) {
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		this.username = username;
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	}
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}