| /* |
| * 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.beam.runners.twister2.translators.batch; |
| |
| import edu.iu.dsc.tws.api.tset.sets.batch.BatchTSet; |
| import java.io.IOException; |
| import org.apache.beam.runners.core.construction.CreatePCollectionViewTranslation; |
| import org.apache.beam.runners.twister2.Twister2BatchTranslationContext; |
| import org.apache.beam.runners.twister2.translators.BatchTransformTranslator; |
| import org.apache.beam.runners.twister2.translators.functions.ByteToWindowFunctionPrimitive; |
| import org.apache.beam.runners.twister2.translators.functions.MapToTupleFunction; |
| import org.apache.beam.sdk.coders.Coder; |
| import org.apache.beam.sdk.coders.KvCoder; |
| import org.apache.beam.sdk.runners.AppliedPTransform; |
| import org.apache.beam.sdk.transforms.PTransform; |
| import org.apache.beam.sdk.transforms.View; |
| import org.apache.beam.sdk.transforms.windowing.WindowFn; |
| import org.apache.beam.sdk.util.WindowedValue; |
| import org.apache.beam.sdk.values.PCollection; |
| import org.apache.beam.sdk.values.WindowingStrategy; |
| |
| /** PCollectionView translator. */ |
| @SuppressWarnings({ |
| "rawtypes" // TODO(https://issues.apache.org/jira/browse/BEAM-10556) |
| }) |
| public class PCollectionViewTranslatorBatch<ElemT, ViewT> |
| implements BatchTransformTranslator<View.CreatePCollectionView<ElemT, ViewT>> { |
| @Override |
| public void translateNode( |
| View.CreatePCollectionView<ElemT, ViewT> transform, Twister2BatchTranslationContext context) { |
| BatchTSet<WindowedValue<ElemT>> inputDataSet = |
| context.getInputDataSet(context.getInput(transform)); |
| @SuppressWarnings("unchecked") |
| AppliedPTransform< |
| PCollection<ElemT>, |
| PCollection<ElemT>, |
| PTransform<PCollection<ElemT>, PCollection<ElemT>>> |
| application = |
| (AppliedPTransform< |
| PCollection<ElemT>, |
| PCollection<ElemT>, |
| PTransform<PCollection<ElemT>, PCollection<ElemT>>>) |
| context.getCurrentTransform(); |
| org.apache.beam.sdk.values.PCollectionView<ViewT> input; |
| PCollection<ElemT> inputPCol = context.getInput(transform); |
| final KvCoder coder = (KvCoder) inputPCol.getCoder(); |
| Coder inputKeyCoder = coder.getKeyCoder(); |
| WindowingStrategy windowingStrategy = inputPCol.getWindowingStrategy(); |
| WindowFn windowFn = windowingStrategy.getWindowFn(); |
| final WindowedValue.WindowedValueCoder wvCoder = |
| WindowedValue.FullWindowedValueCoder.of(coder.getValueCoder(), windowFn.windowCoder()); |
| BatchTSet<WindowedValue<ElemT>> inputGathered = |
| inputDataSet |
| .direct() |
| .map(new MapToTupleFunction<>(inputKeyCoder, wvCoder)) |
| .allGather() |
| .map(new ByteToWindowFunctionPrimitive(inputKeyCoder, wvCoder)); |
| try { |
| input = CreatePCollectionViewTranslation.getView(application); |
| } catch (IOException e) { |
| throw new RuntimeException(e); |
| } |
| context.setSideInputDataSet(input.getTagInternal().getId(), inputGathered); |
| } |
| } |