savepoint.java

java数据库源代码 请看看啊 提点宝贵的意见

/*
 * @(#)Savepoint.java	1.8 03/01/23
 *
 * Copyright 2003 Sun Microsystems, Inc. All rights reserved.
 * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 */

package java.sql;
 
/**
 * The representation of a savepoint, which is a point within
 * the current transaction that can be referenced from the 
 * <code>Connection.rollback</code> method. When a transaction
 * is rolled back to a savepoint all changes made after that
 * savepoint are undone.
 * <p>
 * Savepoints can be either named or unnamed. Unnamed savepoints
 * are identified by an ID generated by the underlying data source.
 *
 * @since 1.4
 */

public interface Savepoint {

    /**
     * Retrieves the generated ID for the savepoint that this 
     * <code>Savepoint</code> object represents.
     * @return the numeric ID of this savepoint
     * @exception SQLException if this is a named savepoint
     * @since 1.4
     */
    int getSavepointId() throws SQLException;

    /**
     * Retrieves the name of the savepoint that this <code>Savepoint</code>
     * object represents.
     * @return the name of this savepoint
     * @exception SQLException if this is an un-named savepoint
     * @since 1.4
     */
    String getSavepointName() throws SQLException;
}