65 lines
2.8 KiB
Java
65 lines
2.8 KiB
Java
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/*
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* Copyright (c) 2000, 2001, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Oracle designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Oracle in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package javax.sql;
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import java.sql.*;
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/**
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* An object that implements the <code>RowSetWriter</code> interface,
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* called a <i>writer</i>. A writer may be registered with a <code>RowSet</code>
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* object that supports the reader/writer paradigm.
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* <P>
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* If a disconnected <code>RowSet</code> object modifies some of its data,
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* and it has a writer associated with it, it may be implemented so that it
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* calls on the writer's <code>writeData</code> method internally
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* to write the updates back to the data source. In order to do this, the writer
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* must first establish a connection with the rowset's data source.
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* <P>
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* If the data to be updated has already been changed in the data source, there
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* is a conflict, in which case the writer will not write
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* the changes to the data source. The algorithm the writer uses for preventing
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* or limiting conflicts depends entirely on its implementation.
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*
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* @since 1.4
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*/
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public interface RowSetWriter {
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/**
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* Writes the changes in this <code>RowSetWriter</code> object's
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* rowset back to the data source from which it got its data.
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*
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* @param caller the <code>RowSet</code> object (1) that has implemented the
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* <code>RowSetInternal</code> interface, (2) with which this writer is
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* registered, and (3) that called this method internally
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* @return <code>true</code> if the modified data was written; <code>false</code>
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* if not, which will be the case if there is a conflict
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* @exception SQLException if a database access error occurs
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*/
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boolean writeData(RowSetInternal caller) throws SQLException;
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}
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