content: /*
   * 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.sdk.runners;
  
  import com.google.auto.value.AutoValue;
  import java.util.Map;
  import java.util.stream.Collectors;
  import org.apache.beam.sdk.Pipeline;
  import org.apache.beam.sdk.annotations.Internal;
  import org.apache.beam.sdk.transforms.PTransform;
  import org.apache.beam.sdk.transforms.resourcehints.ResourceHints;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.PInput;
  import org.apache.beam.sdk.values.POutput;
  import org.apache.beam.sdk.values.PValues;
  import org.apache.beam.sdk.values.TupleTag;
  
  /**
   * <b><i>For internal use only; no backwards-compatibility guarantees.</i></b>
   *
   * <p>Inputs and outputs are stored in their expanded forms, as the condensed form of a composite
   * {@link PInput} or {@link POutput} is a language-specific concept, and {@link AppliedPTransform}
   * represents a possibly cross-language transform for which no appropriate composite type exists in
   * the Java SDK.
   *
   * @param <InputT> transform input type
   * @param <OutputT> transform output type
   * @param <TransformT> transform type
   */
  @Internal
  @AutoValue
  public abstract class AppliedPTransform<
      InputT extends PInput,
      OutputT extends POutput,
      TransformT extends PTransform<? super InputT, OutputT>> {
    // To prevent extension outside of this package.
    AppliedPTransform() {}
  
    public static <
            InputT extends PInput,
            OutputT extends POutput,
            TransformT extends PTransform<? super InputT, OutputT>>
        AppliedPTransform<InputT, OutputT, TransformT> of(
            String fullName,
            Map<TupleTag<?>, PCollection<?>> input,
            Map<TupleTag<?>, PCollection<?>> output,
            TransformT transform,
            ResourceHints resourceHints,
            Pipeline p) {
      return new AutoValue_AppliedPTransform<>(fullName, input, output, transform, resourceHints, p);
    }
  
    public abstract String getFullName();
  
    public abstract Map<TupleTag<?>, PCollection<?>> getInputs();
  
    public abstract Map<TupleTag<?>, PCollection<?>> getOutputs();
  
    public abstract TransformT getTransform();
  
    public abstract ResourceHints getResourceHints();
  
    public abstract Pipeline getPipeline();
  
    /** @return map of {@link TupleTag TupleTags} which are not side inputs. */
    public Map<TupleTag<?>, PCollection<?>> getMainInputs() {
      Map<TupleTag<?>, PCollection<?>> sideInputs =
          PValues.fullyExpand(getTransform().getAdditionalInputs());
      return getInputs().entrySet().stream()
          .filter(e -> !sideInputs.containsKey(e.getKey()))
          .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue));
    }
  }
  