| /* |
| * 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.nemo.compiler.frontend.beam.transform; |
| |
| import org.apache.beam.runners.core.DoFnRunners; |
| import org.apache.beam.sdk.util.WindowedValue; |
| import org.apache.beam.sdk.values.TupleTag; |
| import org.apache.nemo.common.ir.OutputCollector; |
| |
| /** |
| * Default output emitter that uses outputCollector. |
| * |
| * @param <OutputT> output type |
| */ |
| public final class DefaultOutputManager<OutputT> implements DoFnRunners.OutputManager { |
| private final TupleTag<OutputT> mainOutputTag; |
| private final OutputCollector<WindowedValue<OutputT>> outputCollector; |
| |
| /** |
| * @param outputCollector output collector. |
| * @param mainOutputTag main output tag. |
| */ |
| DefaultOutputManager(final OutputCollector<WindowedValue<OutputT>> outputCollector, |
| final TupleTag<OutputT> mainOutputTag) { |
| this.outputCollector = outputCollector; |
| this.mainOutputTag = mainOutputTag; |
| } |
| |
| @Override |
| public <T> void output(final TupleTag<T> tag, final WindowedValue<T> output) { |
| if (tag.equals(mainOutputTag)) { |
| outputCollector.emit((WindowedValue<OutputT>) output); |
| } else { |
| outputCollector.emit(tag.getId(), output); |
| } |
| } |
| } |