| /* |
| 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 org.apache.edgent.topology; |
| |
| /** |
| * Termination point (sink) for a stream. |
| * |
| * @param <T> Tuple type |
| */ |
| public interface TSink<T> extends TopologyElement { |
| /** |
| * Get the stream feeding this sink. |
| * The returned reference may be used for |
| * further processing of the feeder stream. |
| * <BR> |
| * For example, {@code s.print().filter(...)} |
| * <BR> |
| * Here the filter is applied |
| * to {@code s} so that {@code s} feeds |
| * the {@code print()} and {@code filter()}. |
| * |
| * @return stream feeding this sink. |
| */ |
| public TStream<T> getFeed(); |
| } |