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/*
 * Copyright (C) 2010 The Guava Authors
 *
 * 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 com.google.common.collect;

import com.google.common.annotations.Beta;
import com.google.common.annotations.GwtCompatible;
import com.google.common.annotations.GwtIncompatible;
import com.google.common.base.Equivalence;
import com.google.common.base.Function;
import com.google.common.base.MoreObjects;
import com.google.common.collect.MapMaker.RemovalListener;
import com.google.common.collect.MapMaker.RemovalNotification;

import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.TimeUnit;

/**
 * A class exactly like {@link MapMaker}, except restricted in the types of maps it can build.
 * For the most part, you should probably just ignore the existence of this class.
 *
 * @param  the base type for all key types of maps built by this map maker
 * @param  the base type for all value types of maps built by this map maker
 * @author Kevin Bourrillion
 * @since 7.0
 * @deprecated This class existed only to support the generic paramterization necessary for the
 *     caching functionality in {@code MapMaker}. That functionality has been moved to {@link
 *     com.google.common.cache.CacheBuilder}, which is a properly generified class and thus needs no
 *     "Generic" equivalent; simple use {@code CacheBuilder} naturally. For general migration
 *     instructions, see the MapMaker Migration
 *     Guide.
 */
@Beta
@Deprecated
@GwtCompatible(emulated = true)
abstract class GenericMapMaker {
  @GwtIncompatible("To be supported")
  enum NullListener implements RemovalListener {
    INSTANCE;

    @Override
    public void onRemoval(RemovalNotification notification) {}
  }

  // Set by MapMaker, but sits in this class to preserve the type relationship
  @GwtIncompatible("To be supported")
  RemovalListener removalListener;

  // No subclasses but our own
  GenericMapMaker() {}

  /**
   * See {@link MapMaker#keyEquivalence}.
   */
  @GwtIncompatible("To be supported")
  abstract GenericMapMaker keyEquivalence(Equivalence equivalence);

  /**
   * See {@link MapMaker#initialCapacity}.
   */
  public abstract GenericMapMaker initialCapacity(int initialCapacity);

  /**
   * See {@link MapMaker#maximumSize}.
   */
  abstract GenericMapMaker maximumSize(int maximumSize);

  /**
   * See {@link MapMaker#concurrencyLevel}.
   */
  public abstract GenericMapMaker concurrencyLevel(int concurrencyLevel);

  /**
   * See {@link MapMaker#weakKeys}.
   */
  @GwtIncompatible("java.lang.ref.WeakReference")
  public abstract GenericMapMaker weakKeys();

  /**
   * See {@link MapMaker#weakValues}.
   */
  @GwtIncompatible("java.lang.ref.WeakReference")
  public abstract GenericMapMaker weakValues();

  /**
   * See {@link MapMaker#softValues}.
   *
   * @deprecated Caching functionality in {@code MapMaker} has been moved to {@link
   *     com.google.common.cache.CacheBuilder}, with {@link #softValues} being replaced by {@link
   *     com.google.common.cache.CacheBuilder#softValues}. Note that {@code CacheBuilder} is simply
   *     an enhanced API for an implementation which was branched from {@code MapMaker}.
   */
  @Deprecated
  @GwtIncompatible("java.lang.ref.SoftReference")
  abstract GenericMapMaker softValues();

  /**
   * See {@link MapMaker#expireAfterWrite}.
   */
  abstract GenericMapMaker expireAfterWrite(long duration, TimeUnit unit);

  /**
   * See {@link MapMaker#expireAfterAccess}.
   */
  @GwtIncompatible("To be supported")
  abstract GenericMapMaker expireAfterAccess(long duration, TimeUnit unit);

  /*
   * Note that MapMaker's removalListener() is not here, because once you're interacting with a
   * GenericMapMaker you've already called that, and shouldn't be calling it again.
   */

  @SuppressWarnings("unchecked") // safe covariant cast
  @GwtIncompatible("To be supported")
   RemovalListener getRemovalListener() {
    return (RemovalListener) MoreObjects.firstNonNull(removalListener, NullListener.INSTANCE);
  }

  /**
   * See {@link MapMaker#makeMap}.
   */
  public abstract  ConcurrentMap makeMap();

  /**
   * See {@link MapMaker#makeCustomMap}.
   */
  @GwtIncompatible("MapMakerInternalMap")
  abstract  MapMakerInternalMap makeCustomMap();

  /**
   * See {@link MapMaker#makeComputingMap}.
   */
  @Deprecated
  abstract  ConcurrentMap makeComputingMap(
      Function computingFunction);
}
    

    

    

            

    

            



    
    






    
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