1 /*
2 * *************************************************************************************************************************************************************
3 *
4 * TheseFoolishThings: Miscellaneous utilities
5 * http://tidalwave.it/projects/thesefoolishthings
6 *
7 * Copyright (C) 2009 - 2024 by Tidalwave s.a.s. (http://tidalwave.it)
8 *
9 * *************************************************************************************************************************************************************
10 *
11 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License.
12 * You may obtain a copy of the License at
13 *
14 * http://www.apache.org/licenses/LICENSE-2.0
15 *
16 * 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
17 * CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.
18 *
19 * *************************************************************************************************************************************************************
20 *
21 * git clone https://bitbucket.org/tidalwave/thesefoolishthings-src
22 * git clone https://github.com/tidalwave-it/thesefoolishthings-src
23 *
24 * *************************************************************************************************************************************************************
25 */
26 package it.tidalwave.util.spi;
27
28 import javax.annotation.Nonnull;
29 import java.util.ArrayList;
30 import java.util.Collections;
31 import java.util.HashMap;
32 import java.util.List;
33 import java.util.Map;
34 import java.util.Optional;
35 import it.tidalwave.util.Id;
36 import lombok.RequiredArgsConstructor;
37
38 /***************************************************************************************************************************************************************
39 *
40 * An implementation of {@link FinderWithIdSupport} based on a {@link Map}.
41 *
42 * @param <T> the product abstract type
43 * @param <I> the product concrete type
44 * @param <F> the {@code Finder} type
45 * @since 3.2-ALPHA-15
46 *
47 * @author Fabrizio Giudici
48 * @it.tidalwave.javadoc.experimental
49 *
50 **************************************************************************************************************************************************************/
51 @RequiredArgsConstructor
52 public class FinderWithIdMapSupport<T, I extends T, F extends ExtendedFinderSupport<T, F>>
53 extends FinderWithIdSupport<T, I, F>
54 {
55 private static final long serialVersionUID = 1L;
56
57 @Nonnull
58 private final Map<Id, I> mapById;
59
60 public FinderWithIdMapSupport()
61 {
62 mapById = Collections.emptyMap();
63 }
64
65 public FinderWithIdMapSupport (@Nonnull final FinderWithIdMapSupport<T, I, F> other,
66 @Nonnull final Object override)
67 {
68 super(other, override);
69 final FinderWithIdMapSupport<T, I, F> source = getSource(FinderWithIdMapSupport.class, other, override);
70 mapById = new HashMap<>(source.mapById);
71 }
72
73 @Override @Nonnull
74 protected List<T> findAll()
75 {
76 return new ArrayList<>(mapById.values());
77 }
78
79 @Override @Nonnull
80 protected Optional<T> findById (@Nonnull final Id id)
81 {
82 return Optional.ofNullable(mapById.get(id));
83 }
84 }
85