| /* |
| * Copyright (c) 2000, 2006, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.sql; |
| |
| import java.sql.Connection; |
| import java.sql.SQLException; |
| import java.sql.Wrapper; |
| |
| /** |
| * <p>A factory for connections to the physical data source that this |
| * <code>DataSource</code> object represents. An alternative to the |
| * <code>DriverManager</code> facility, a <code>DataSource</code> object |
| * is the preferred means of getting a connection. An object that implements |
| * the <code>DataSource</code> interface will typically be |
| * registered with a naming service based on the |
| * Java<sup><font size=-2>TM</font></sup> Naming and Directory (JNDI) API. |
| * <P> |
| * The <code>DataSource</code> interface is implemented by a driver vendor. |
| * There are three types of implementations: |
| * <OL> |
| * <LI>Basic implementation -- produces a standard <code>Connection</code> |
| * object |
| * <LI>Connection pooling implementation -- produces a <code>Connection</code> |
| * object that will automatically participate in connection pooling. This |
| * implementation works with a middle-tier connection pooling manager. |
| * <LI>Distributed transaction implementation -- produces a |
| * <code>Connection</code> object that may be used for distributed |
| * transactions and almost always participates in connection pooling. |
| * This implementation works with a middle-tier |
| * transaction manager and almost always with a connection |
| * pooling manager. |
| * </OL> |
| * <P> |
| * A <code>DataSource</code> object has properties that can be modified |
| * when necessary. For example, if the data source is moved to a different |
| * server, the property for the server can be changed. The benefit is that |
| * because the data source's properties can be changed, any code accessing |
| * that data source does not need to be changed. |
| * <P> |
| * A driver that is accessed via a <code>DataSource</code> object does not |
| * register itself with the <code>DriverManager</code>. Rather, a |
| * <code>DataSource</code> object is retrieved though a lookup operation |
| * and then used to create a <code>Connection</code> object. With a basic |
| * implementation, the connection obtained through a <code>DataSource</code> |
| * object is identical to a connection obtained through the |
| * <code>DriverManager</code> facility. |
| * |
| * @since 1.4 |
| */ |
| |
| public interface DataSource extends CommonDataSource,Wrapper { |
| |
| /** |
| * <p>Attempts to establish a connection with the data source that |
| * this <code>DataSource</code> object represents. |
| * |
| * @return a connection to the data source |
| * @exception SQLException if a database access error occurs |
| */ |
| Connection getConnection() throws SQLException; |
| |
| /** |
| * <p>Attempts to establish a connection with the data source that |
| * this <code>DataSource</code> object represents. |
| * |
| * @param username the database user on whose behalf the connection is |
| * being made |
| * @param password the user's password |
| * @return a connection to the data source |
| * @exception SQLException if a database access error occurs |
| * @since 1.4 |
| */ |
| Connection getConnection(String username, String password) |
| throws SQLException; |
| |
| } |