content: /*
   * Copyright (C) 2020 ActiveJ LLC.
   *
   * Licensed 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 io.activej.dataflow.dataset.impl;
  
  import io.activej.common.annotation.ExposedInternals;
  import io.activej.dataflow.dataset.Dataset;
  import io.activej.dataflow.dataset.SortedDataset;
  import io.activej.dataflow.graph.DataflowContext;
  import io.activej.dataflow.graph.StreamId;
  
  import java.util.Collection;
  import java.util.Comparator;
  import java.util.List;
  import java.util.function.Function;
  
  @ExposedInternals
  public final class AlreadySorted<K, T> extends SortedDataset<K, T> {
  	public final Dataset<T> dataset;
  
  	public AlreadySorted(Dataset<T> dataset, Comparator<K> keyComparator, Class<K> keyType, Function<T, K> keyFunction) {
  		super(dataset.streamSchema(), keyComparator, keyType, keyFunction);
  		this.dataset = dataset;
  	}
  
  	@Override
  	public List<StreamId> channels(DataflowContext context) {
  		return dataset.channels(context);
  	}
  
  	@Override
  	public Collection<Dataset<?>> getBases() {
  		return List.of(dataset);
  	}
  }
  