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.client.functional;
  
  import org.apache.beam.sdk.extensions.euphoria.core.annotation.audience.Audience;
  
  /**
   * A function that is composition of two unary functions.
   *
   * @deprecated Use Java SDK directly, Euphoria is scheduled for removal in a future release.
   */
  @Audience(Audience.Type.CLIENT)
  @Deprecated
  public class CompositeUnaryFunction<InputT, OutputT, X> implements UnaryFunction<InputT, OutputT> {
  
    private final UnaryFunction<InputT, X> first;
    private final UnaryFunction<X, OutputT> second;
  
    private CompositeUnaryFunction(UnaryFunction<InputT, X> first, UnaryFunction<X, OutputT> second) {
      this.first = first;
      this.second = second;
    }
  
    public static <InputT, OutputT, X> CompositeUnaryFunction<InputT, OutputT, X> of(
        UnaryFunction<InputT, X> first, UnaryFunction<X, OutputT> second) {
      return new CompositeUnaryFunction<>(first, second);
    }
  
    @Override
    @SuppressWarnings("unchecked")
    public OutputT apply(InputT what) {
      return second.apply(first.apply(what));
    }
  }
  