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.extensions.euphoria.core.translate;
  
  import static org.apache.beam.vendor.guava.v32_1_2_jre.com.google.common.base.Preconditions.checkState;
  
  import org.apache.beam.sdk.extensions.euphoria.core.client.operator.CompositeOperator;
  import org.apache.beam.sdk.extensions.euphoria.core.client.operator.base.Operator;
  import org.apache.beam.sdk.values.PCollection;
  import org.apache.beam.sdk.values.PCollectionList;
  
  /**
   * A translator that expands {@link CompositeOperator composite operators}.
   *
   * @param <InputT> input type
   * @param <OutputT> output type
   * @param <OperatorT> operator type
   * @deprecated Use Java SDK directly, Euphoria is scheduled for removal in a future release.
   */
  @SuppressWarnings({
    "rawtypes" // TODO(https://github.com/apache/beam/issues/20447)
  })
  @Deprecated
  public class CompositeOperatorTranslator<InputT, OutputT, OperatorT extends Operator>
      implements OperatorTranslator<InputT, OutputT, OperatorT> {
  
    @SuppressWarnings("unchecked")
    @Override
    public PCollection<OutputT> translate(OperatorT operator, PCollectionList<InputT> inputs) {
      checkState(operator instanceof CompositeOperator, "Operator is not composite.");
      return ((CompositeOperator<InputT, OutputT>) operator).expand(inputs);
    }
  
    @Override
    public boolean canTranslate(OperatorT operator) {
      return operator instanceof CompositeOperator;
    }
  }
  