| /** |
| * 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.storm.streams.processors; |
| |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.Set; |
| import org.apache.storm.streams.ProcessorNode; |
| |
| /** |
| * A composite context that holds a chain of {@link ProcessorContext}. |
| */ |
| public class ChainedProcessorContext implements ProcessorContext { |
| private final ProcessorNode processorNode; |
| private final List<? extends ProcessorContext> contexts; |
| |
| public ChainedProcessorContext(ProcessorNode processorNode, List<? extends ProcessorContext> contexts) { |
| this.processorNode = processorNode; |
| this.contexts = new ArrayList<>(contexts); |
| } |
| |
| public ChainedProcessorContext(ProcessorNode processorNode, ProcessorContext... contexts) { |
| this(processorNode, Arrays.asList(contexts)); |
| } |
| |
| @Override |
| public <T> void forward(T input) { |
| for (ProcessorContext context : contexts) { |
| context.forward(input); |
| } |
| } |
| |
| @Override |
| public <T> void forward(T input, String stream) { |
| for (ProcessorContext context : contexts) { |
| context.forward(input, stream); |
| } |
| } |
| |
| @Override |
| public boolean isWindowed() { |
| return processorNode.isWindowed(); |
| } |
| |
| @Override |
| public Set<String> getWindowedParentStreams() { |
| return processorNode.getWindowedParentStreams(); |
| } |
| } |