1   /*
2    * Copyright (C) 2010 The Guava Authors
3    *
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    *
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    *
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS-IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */
16  
17  package com.google.common.collect;
18  
19  import com.google.common.annotations.Beta;
20  import com.google.common.annotations.GwtCompatible;
21  import com.google.common.base.Function;
22  
23  import java.util.concurrent.ConcurrentMap;
24  import java.util.concurrent.TimeUnit;
25  
26  /**
27   * A class exactly like {@link MapMaker}, except restricted in the types of maps it can build.
28   * For the most part, you should probably just ignore the existence of this class.
29   *
30   * @param <K0> the base type for all key types of maps built by this map maker
31   * @param <V0> the base type for all value types of maps built by this map maker
32   * @author Kevin Bourrillion
33   * @since 7.0
34   * @deprecated This class existed only to support the generic paramterization necessary for the
35   *     caching functionality in {@code MapMaker}. That functionality has been moved to {@link
36   *     com.google.common.cache.CacheBuilder}, which is a properly generified class and thus needs no
37   *     "Generic" equivalent; simple use {@code CacheBuilder} naturally. For general migration
38   *     instructions, see the <a
39   *     href="http://code.google.com/p/guava-libraries/wiki/MapMakerMigration">MapMaker Migration
40   *     Guide</a>.
41   */
42  @Beta
43  @Deprecated
44  @GwtCompatible(emulated = true)
45  abstract class GenericMapMaker<K0, V0> {
46  
47    // Set by MapMaker, but sits in this class to preserve the type relationship
48  
49    // No subclasses but our own
50    GenericMapMaker() {}
51  
52    /**
53     * See {@link MapMaker#initialCapacity}.
54     */
55    public abstract GenericMapMaker<K0, V0> initialCapacity(int initialCapacity);
56  
57    /**
58     * See {@link MapMaker#maximumSize}.
59     */
60    abstract GenericMapMaker<K0, V0> maximumSize(int maximumSize);
61  
62    /**
63     * See {@link MapMaker#concurrencyLevel}.
64     */
65    public abstract GenericMapMaker<K0, V0> concurrencyLevel(int concurrencyLevel);
66  
67    /**
68     * See {@link MapMaker#expireAfterWrite}.
69     */
70    abstract GenericMapMaker<K0, V0> expireAfterWrite(long duration, TimeUnit unit);
71  
72    /*
73     * Note that MapMaker's removalListener() is not here, because once you're interacting with a
74     * GenericMapMaker you've already called that, and shouldn't be calling it again.
75     */
76  
77    /**
78     * See {@link MapMaker#makeMap}.
79     */
80    public abstract <K extends K0, V extends V0> ConcurrentMap<K, V> makeMap();
81  
82    /**
83     * See {@link MapMaker#makeComputingMap}.
84     */
85    @Deprecated
86    abstract <K extends K0, V extends V0> ConcurrentMap<K, V> makeComputingMap(
87        Function<? super K, ? extends V> computingFunction);
88  }