code: /*
   * Copyright 2012-2018 Chronicle Map Contributors
   *
   * 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 net.openhft.chronicle.set;
  
  import net.openhft.chronicle.hash.HashQueryContext;
  import org.jetbrains.annotations.Nullable;
  
  /**
   * A context of {@link ChronicleSet} operations with <i>individual keys</i>
   * (most: {@code contains()}, {@code add()}, etc., opposed to <i>bulk</i> operations).
   *
   * @param <K> the set key type
   * @param <R> the return type of {@link SetEntryOperations} specialized for the queried set
   * @see ChronicleSet#queryContext(Object)
   */
  public interface SetQueryContext<K, R> extends HashQueryContext<K>, SetContext<K, R> {
  
      @Override
      @Nullable
      SetEntry<K> entry();
  
      @Override
      @Nullable
      SetAbsentEntry<K> absentEntry();
  }
  