/* * Copyright (c) 2000, 2001, 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.*; /** * An object that implements the <code>RowSetWriter</code> interface, * called a <i>writer</i>. A writer may be registered with a <code>RowSet</code> * object that supports the reader/writer paradigm. * <P> * If a disconnected <code>RowSet</code> object modifies some of its data, * and it has a writer associated with it, it may be implemented so that it * calls on the writer's <code>writeData</code> method internally * to write the updates back to the data source. In order to do this, the writer * must first establish a connection with the rowset's data source. * <P> * If the data to be updated has already been changed in the data source, there * is a conflict, in which case the writer will not write * the changes to the data source.  The algorithm the writer uses for preventing * or limiting conflicts depends entirely on its implementation. * * @since 1.4 */ public interface RowSetWriter {   /**   * Writes the changes in this <code>RowSetWriter</code> object's   * rowset back to the data source from which it got its data.   *   * @param caller the <code>RowSet</code> object (1) that has implemented the   *         <code>RowSetInternal</code> interface, (2) with which this writer is   *        registered, and (3) that called this method internally   * @return <code>true</code> if the modified data was written; <code>false</code>   *          if not, which will be the case if there is a conflict   * @exception SQLException if a database access error occurs   */  boolean writeData(RowSetInternal caller) throws SQLException; }