| /* |
| * Copyright 2009-2010 by The Regents of the University of California |
| * Licensed 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 from |
| * |
| * 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 edu.uci.ics.hyracks.api.dataflow; |
| |
| import edu.uci.ics.hyracks.api.exceptions.HyracksDataException; |
| |
| /** |
| * Accepts data from data producers. |
| * |
| * @author vinayakb |
| */ |
| public interface IDataWriter<T> { |
| /** |
| * Pushes data to the acceptor. |
| * |
| * @param data |
| * - Data pushed to the acceptor. <code>null</code> indicates the |
| * end of stream. |
| * @throws HyracksDataException |
| */ |
| public void writeData(T data) throws HyracksDataException; |
| |
| /** |
| * Indicates that the stream has failed. |
| * |
| * @throws HyracksDataException |
| */ |
| public void fail() throws HyracksDataException; |
| |
| /** |
| * Closes this writer. |
| * |
| * @throws Exception |
| */ |
| public void close() throws HyracksDataException; |
| } |