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.map.impl.stage.iter;
  
  import net.openhft.chronicle.hash.Data;
  import net.openhft.chronicle.hash.impl.stage.iter.HashSegmentIteration;
  import net.openhft.chronicle.map.MapEntry;
  import net.openhft.chronicle.map.impl.IterationContext;
  import net.openhft.chronicle.map.impl.stage.data.instance.WrappedValueInstanceDataHolder;
  import net.openhft.chronicle.map.impl.stage.entry.MapEntryStages;
  import net.openhft.chronicle.map.impl.stage.map.WrappedValueInstanceDataHolderAccess;
  import net.openhft.sg.StageRef;
  import net.openhft.sg.Staged;
  import org.jetbrains.annotations.NotNull;
  
  @Staged
  public abstract class MapSegmentIteration<K, V, R> extends HashSegmentIteration<K, MapEntry<K, V>>
          implements MapEntry<K, V>, IterationContext<K, V, R> {
  
      @StageRef
      MapEntryStages<K, V> entry;
      @StageRef
      WrappedValueInstanceDataHolder<V> wrappedValueInstanceDataHolder;
      @StageRef
      WrappedValueInstanceDataHolderAccess<K, V, ?> wrappedValueInstanceDataHolderAccess;
  
      @Override
      public void hookAfterEachIteration() {
          throwExceptionIfClosed();
  
          wrappedValueInstanceDataHolder.closeValue();
      }
  
      @Override
      public void doReplaceValue(Data<V> newValue) {
          throwExceptionIfClosed();
  
          checkOnEachPublicOperation.checkOnEachPublicOperation();
          try {
              entry.innerDefaultReplaceValue(newValue);
          } finally {
              s.innerWriteLock.unlock();
          }
      }
  
      @NotNull
      @Override
      public WrappedValueInstanceDataHolderAccess<K, V, ?> context() {
          return wrappedValueInstanceDataHolderAccess;
      }
  }
  