1 /*
2 * *************************************************************************************************************************************************************
3 *
4 * TheseFoolishThings: Miscellaneous utilities
5 * http://tidalwave.it/projects/thesefoolishthings
6 *
7 * Copyright (C) 2009 - 2025 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.role.spi;
27
28 import javax.annotation.Nonnull;
29 import it.tidalwave.util.LazySupplier;
30 import static it.tidalwave.role.impl.ServiceLoaderLocator.lazySupplierOf;
31
32 /***************************************************************************************************************************************************************
33 *
34 * The provider of the singleton {@link OwnerRoleFactory}.
35 *
36 * @author Fabrizio Giudici
37 *
38 **************************************************************************************************************************************************************/
39 @FunctionalInterface
40 public interface OwnerRoleFactoryProvider
41 {
42 static class Inner // TODO: will go away with Java 17
43 {
44 private static final LazySupplier<OwnerRoleFactoryProvider> PROVIDER_REF =
45 lazySupplierOf(OwnerRoleFactoryProvider.class);
46 }
47
48 /***********************************************************************************************************************************************************
49 * Returns the singleton instance of {@link OwnerRoleFactoryProvider}
50 *
51 * @return the singleton instance
52 **********************************************************************************************************************************************************/
53 @Nonnull
54 public static OwnerRoleFactoryProvider getInstance ()
55 {
56 return Inner.PROVIDER_REF.get();
57 }
58
59 /***********************************************************************************************************************************************************
60 * Creates an {@link OwnerRoleFactory} for the given object
61 *
62 * @param owner the object
63 * @return {@code AsDelegate}
64 **********************************************************************************************************************************************************/
65 @Nonnull
66 public OwnerRoleFactory createRoleFactory (@Nonnull Object owner);
67 }