1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 18 package javax.sql; 19 20 import java.sql.SQLException; 21 22 /** 23 * An interface which provides functionality for a disconnected {@code RowSet} 24 * to get data from a database into its rows. The {@code RowSet} calls the 25 * {@code RowSetReader} interface when the {@code RowSet}'s execute method is 26 * invoked - a {@code RowSetReader} must first be registered with the {@code 27 * RowSet} for this to work. 28 * 29 * @see RowSet 30 */ 31 public interface RowSetReader { 32 33 /** 34 * Reads new data into the {@code RowSet}. The calling {@code RowSet} object 35 * must itself implement the {@code RowSetInternal} interface and the 36 * {@code RowSetReader} must be registered as a reader on the 37 * {@code RowSet}. 38 * <p> 39 * This method adds rows into the calling {@code RowSet}. The reader may 40 * invoke any of the {@code RowSet}'s methods except for the {@code execute} 41 * method (calling {@code execute} will cause an {@code SQLException} to be 42 * thrown). However, when the reader calls the {@code RowSet}'s methods, no 43 * events are sent to listeners - any listeners are informed by the calling 44 * {@code RowSet}'s {@code execute} method once the reader returns from the 45 * {@code readData} method. 46 * 47 * @param theCaller 48 * must be the calling {@code RowSet} object, which must have 49 * implemented the {@code RowSetInternal} interface. 50 * @throws SQLException 51 * if a problem occurs accessing the database or if the reader 52 * calls the {@link RowSet#execute()} method. 53 * @see RowSetInternal 54 */ 55 public void readData(RowSetInternal theCaller) throws SQLException; 56 } 57
