/** * 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 storm.trident.operation; import storm.trident.Stream; /** * The `Assembly` interface provides a means to encapsulate logic applied to a {@link org.apache.storm.trident.Stream}. * * Usage: * * ```java * Stream mystream = ...; * Stream assemblyStream = mystream.applyAssembly(myAssembly); * ``` * * @see org.apache.storm.trident.Stream * @see org.apache.storm.trident.operation.builtin.FirstN * */ public interface Assembly { /** * Applies the `Assembly` to a given {@link org.apache.storm.trident.Stream} * * @param input * @return */ Stream apply(Stream input); }