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.dci.annotation;
27
28 import java.lang.annotation.Documented;
29 import java.lang.annotation.ElementType;
30 import java.lang.annotation.Retention;
31 import java.lang.annotation.RetentionPolicy;
32 import java.lang.annotation.Target;
33 import jakarta.annotation.Nonnull;
34 import lombok.AccessLevel;
35 import lombok.NoArgsConstructor;
36
37 /***************************************************************************************************************************************************************
38 *
39 * Designates a DCI role implementation for a given owner object.
40 *
41 * @author Fabrizio Giudici
42 *
43 **************************************************************************************************************************************************************/
44 @Target(ElementType.TYPE)
45 @Documented
46 @Retention(RetentionPolicy.RUNTIME)
47 public @interface DciRole
48 {
49 @NoArgsConstructor(access = AccessLevel.PRIVATE)
50 public static final class NoContext
51 {
52 }
53
54 /***********************************************************************************************************************************************************
55 * The datum type to which this role can be associated. Multiple data types can be specified.
56 *
57 * @return the datum type
58 **********************************************************************************************************************************************************/
59 @Nonnull
60 public Class<?>[] datumType();
61
62 /***********************************************************************************************************************************************************
63 * The context type to which this role is restricted. If no context is specified, this role will always be
64 * associated.
65 *
66 * @return the context type
67 **********************************************************************************************************************************************************/
68 public Class<?> context() default NoContext.class;
69 }