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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package javax.sql;
import java.sql.SQLException;
/**
* An interface which provides functionality for a disconnected {@code RowSet}
* to put data updates back to the data source from which the {@code RowSet} was
* originally populated. An object implementing this interface is called a
* writer.
* <p>
* The writer must establish a connection to the {@code RowSet}'s database
* before writing the data. The {@code RowSet} calling this interface must
* implement the {@code RowSetInternal} interface.
* <p>
* The writer may encounter a situation where the updated data needs to be
* written back to the database, but has already been updated there in the mean
* time. How a conflict of this kind is handled is determined by the
* implementation of this writer.
*
* @see RowSetInternal
*/
public interface RowSetWriter {
/**
* Writes changes made in the {@code RowSet}, which is associated with this
* {@code RowSetWriter}, back to the database.
*
* @param theRowSet
* a row set that fulfills the following criteria:
* <ul>
* <li>it must implement the {@code RowSetInternal} interface,</li>
* <li>have this {@code RowSetWriter} registered with it,</li>
* <li>must call this method internally.</li>
* </ul>
* @return {@code true} if the modified data was written, {@code false}
* otherwise (which typically implies some form of conflict).
* @throws SQLException
* if a problem occurs accessing the database.
*/
public boolean writeData(RowSetInternal theRowSet) throws SQLException;
}
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