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package org.apache.cayenne.conn;

import java.io.PrintWriter;
import java.sql.SQLException;

import javax.sql.ConnectionPoolDataSource;
import javax.sql.DataSource;
import javax.sql.PooledConnection;

/**
 * PoolDataSource allows to generate pooled connections.
 *
 * It is implemented as a wrapper around a non-pooled data source object. 
 * Delegates all method calls except for "getPooledConnection" to the underlying 
 * datasource.
 * 
 * 
 * @author Andrei Adamchik
 */
public class PoolDataSource implements ConnectionPoolDataSource {
	private DataSource nonPooledDatasource;

	/** Creates new PoolDataSource */
	public PoolDataSource(DataSource nonPooledDatasource) {
		this.nonPooledDatasource = nonPooledDatasource;
	}

	public PoolDataSource(String jdbcDriver, String connectionUrl) throws SQLException {
		nonPooledDatasource = new DriverDataSource(jdbcDriver, connectionUrl);
	}

	public int getLoginTimeout() throws SQLException {
		return nonPooledDatasource.getLoginTimeout();
	}

	public void setLoginTimeout(int seconds) throws SQLException {
		nonPooledDatasource.setLoginTimeout(seconds);
	}

	public PrintWriter getLogWriter() throws SQLException {
		return nonPooledDatasource.getLogWriter();
	}

	public void setLogWriter(PrintWriter out) throws SQLException {
		nonPooledDatasource.setLogWriter(out);
	}

	public PooledConnection getPooledConnection() throws SQLException {
		return new PooledConnectionImpl(nonPooledDatasource, null, null);
	}

	public PooledConnection getPooledConnection(String user, String password) throws SQLException {
		return new PooledConnectionImpl(nonPooledDatasource, user, password);
	}
}