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.util.construction;
  
  import java.util.Map;
  import org.apache.beam.sdk.coders.Coder;
  import org.apache.beam.sdk.runners.AppliedPTransform;
  import org.apache.beam.sdk.runners.PTransformOverrideFactory;
  import org.apache.beam.sdk.transforms.Create;
  import org.apache.beam.sdk.transforms.Create.Values;
  import org.apache.beam.sdk.transforms.PTransform;
  import org.apache.beam.sdk.values.PBegin;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.PCollection.IsBounded;
  import org.apache.beam.sdk.values.TupleTag;
  import org.apache.beam.sdk.values.WindowingStrategy;
  import org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.collect.Iterables;
  
  /** An implementation of {@link Create} that returns a primitive {@link PCollection}. */
  public class PrimitiveCreate<T> extends PTransform<PBegin, PCollection<T>> {
    private final Create.Values<T> transform;
    private final Coder<T> coder;
  
    private PrimitiveCreate(Create.Values<T> transform, Coder<T> coder) {
      this.transform = transform;
      this.coder = coder;
    }
  
    @Override
    public PCollection<T> expand(PBegin input) {
      return PCollection.createPrimitiveOutputInternal(
          input.getPipeline(), WindowingStrategy.globalDefault(), IsBounded.BOUNDED, coder);
    }
  
    public Iterable<T> getElements() {
      return transform.getElements();
    }
  
    /** A {@link PTransformOverrideFactory} that creates instances of {@link PrimitiveCreate}. */
    public static class Factory<T>
        implements PTransformOverrideFactory<PBegin, PCollection<T>, Values<T>> {
      @Override
      public PTransformReplacement<PBegin, PCollection<T>> getReplacementTransform(
          AppliedPTransform<PBegin, PCollection<T>, Values<T>> transform) {
        return PTransformReplacement.of(
            transform.getPipeline().begin(),
            new PrimitiveCreate<>(
                transform.getTransform(),
                ((PCollection<T>) Iterables.getOnlyElement(transform.getOutputs().values()))
                    .getCoder()));
      }
  
      @Override
      public Map<PCollection<?>, ReplacementOutput> mapOutputs(
          Map<TupleTag<?>, PCollection<?>> outputs, PCollection<T> newOutput) {
        return ReplacementOutputs.singleton(outputs, newOutput);
      }
    }
  }
  