/*
 * 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.base.Function;

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 <K0> the base type for all key types of maps built by this map maker
 * @param <V0> the base type for all value types of maps built by this map maker
 * @author Kevin Bourrillion
 * @since 7.0
 */
@Beta
@GwtCompatible(emulated = true)
public abstract class GenericMapMaker<K0, V0> {

  // Set by MapMaker, but sits in this class to preserve the type relationship

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

  /**
   * See {@link MapMaker#initialCapacity}.
   */
  public abstract GenericMapMaker<K0, V0> initialCapacity(int initialCapacity);

  /**
   * See {@link MapMaker#maximumSize}.
   */
  abstract GenericMapMaker<K0, V0> maximumSize(int maximumSize);

  /**
   * See {@link MapMaker#strongKeys}.
   */
  abstract GenericMapMaker<K0, V0> strongKeys();

  /**
   * See {@link MapMaker#concurrencyLevel}.
   */
  public abstract GenericMapMaker<K0, V0> concurrencyLevel(int concurrencyLevel);

  /**
   * See {@link MapMaker#strongValues}.
   */
  abstract GenericMapMaker<K0, V0> strongValues();

  /**
   * See {@link MapMaker#expiration}.
   */
  @Deprecated
  public
  abstract GenericMapMaker<K0, V0> expiration(long duration, TimeUnit unit);

  /**
   * See {@link MapMaker#expireAfterWrite}.
   */
  abstract GenericMapMaker<K0, V0> expireAfterWrite(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.
   */

  /**
   * See {@link MapMaker#makeMap}.
   */
  public abstract <K extends K0, V extends V0> ConcurrentMap<K, V> makeMap();

  /**
   * See {@link MapMaker#makeComputingMap}.
   */
  @Deprecated
  public abstract <K extends K0, V extends V0> ConcurrentMap<K, V> makeComputingMap(
      Function<? super K, ? extends V> computingFunction);
}