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.type;
  
  import java.util.Objects;
  import org.apache.beam.sdk.extensions.euphoria.core.client.util.Triple;
  import org.apache.beam.sdk.values.KV;
  import org.apache.beam.sdk.values.TypeDescriptor;
  import org.apache.beam.sdk.values.TypeParameter;
  import org.checkerframework.checker.nullness.qual.Nullable;
  
  /**
   * A collections of {@link TypeDescriptor} construction methods.
   *
   * @deprecated Use Java SDK directly, Euphoria is scheduled for removal in a future release.
   */
  @SuppressWarnings({
    "nullness" // TODO(https://github.com/apache/beam/issues/20497)
  })
  @Deprecated
  public class TypeUtils {
  
    /**
     * Creates composite {@link TypeDescriptor} of {@code <KV<K,V>}. Provided that both given
     * parameters are non null.
     *
     * @param key key type descriptor
     * @param value value type descriptor
     * @param <K> key tye parameter
     * @param <V> value type parameter
     * @return {@link TypeDescriptor} of {@code <KV<K,V>} when {@code key} and {@code value} are not
     *     null, null otherwise
     */
    public static @Nullable <K, V> TypeDescriptor<KV<K, V>> keyValues(
        TypeDescriptor<K> key, TypeDescriptor<V> value) {
  
      if (Objects.isNull(key) || Objects.isNull(value)) {
        return null;
      }
  
      return new TypeDescriptor<KV<K, V>>() {}.where(new TypeParameter<K>() {}, key)
          .where(new TypeParameter<V>() {}, value);
    }
  
    /**
     * Creates composite {@link TypeDescriptor} of {@code <KV<K,V>}. Provided that both given
     * parameters are non null.
     *
     * @param key key type descriptor
     * @param value value type descriptor
     * @param <K> key type parameter
     * @param <V> value type parameter
     * @return {@link TypeDescriptor} of {@code <KV<K,V>} when {@code key} and {@code value} are not
     *     null, null otherwise
     */
    public static @Nullable <K, V> TypeDescriptor<KV<K, V>> keyValues(Class<K> key, Class<V> value) {
  
      if (Objects.isNull(key) || Objects.isNull(value)) {
        return null;
      }
  
      return keyValues(TypeDescriptor.of(key), TypeDescriptor.of(value));
    }
  
    /**
     * Creates composite {@link TypeDescriptor} of {@code <Triple<K,V, ScoreT>}. Provided that all
     * given parameters are non null.
     *
     * @param key key type descriptor
     * @param value value type descriptor
     * @param score score type descriptor
     * @param <K> key type parameter
     * @param <V> value type parameter
     * @param <ScoreT> score type parameter
     * @return {@link TypeDescriptor} of {@code <Triple<K,V, ScoreT>} or {@code null} when any given
     *     parameter is {@code null}
     */
    public static <K, V, ScoreT> TypeDescriptor<Triple<K, V, ScoreT>> triplets(
        TypeDescriptor<K> key, TypeDescriptor<V> value, TypeDescriptor<ScoreT> score) {
  
      if (Objects.isNull(key) || Objects.isNull(value) || Objects.isNull(score)) {
        return null;
      }
  
      return new TypeDescriptor<Triple<K, V, ScoreT>>() {}.where(new TypeParameter<K>() {}, key)
          .where(new TypeParameter<V>() {}, value)
          .where(new TypeParameter<ScoreT>() {}, score);
    }
  }
  