Package: RoleFactory

RoleFactory

name	instruction	branch	complexity	line	method
getRoleType()	M: 0 C: 8 100%	M: 0 C: 0 100%	M: 0 C: 1 100%	M: 0 C: 1 100%	M: 0 C: 1 100%
resolveFactories(Object, Iterable)	M: 0 C: 34 100%	M: 0 C: 4 100%	M: 0 C: 3 100%	M: 0 C: 7 100%	M: 0 C: 1 100%

Coverage

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.util;
27:
28: import javax.annotation.Nonnull;
29: import java.util.ArrayList;
30: import java.util.Collection;
31: import java.util.List;
32: import java.util.Optional;
33:
34: /***************************************************************************************************************************************************************
35: *
36: * A factory of roles.
37: *
38: * @param <T> the type of the owner
39: * @author Fabrizio Giudici
40: *
41: **************************************************************************************************************************************************************/
42: @FunctionalInterface
43: public interface RoleFactory<T, R>
44: {
45: /***********************************************************************************************************************************************************
46: * {@return one or more roles — if multiple ones have to be returned, they must be wrapped in a {@link java.util.Collection}}.
47: * @param owner the owner
48: **********************************************************************************************************************************************************/
49: @Nonnull
50: public Optional<R> createRoleFor (@Nonnull T owner);
51:
52: /***********************************************************************************************************************************************************
53: * {@return the role type}.
54: * @since 4.0-ALPHA-2
55: **********************************************************************************************************************************************************/
56: @Nonnull @SuppressWarnings("unchecked")
57: public default Class<R> getRoleType()
58: {
59: return (Class<R>)ReflectionUtils.getTypeArguments(RoleFactory.class, getClass()).get(1);
60: }
61:
62: /***********************************************************************************************************************************************************
63: * {@return a collection of roles resolving factories}; that is, any factory in the collection is invoked so it can eventually create another role.
64: * @param roleOrFactories a collection of roles or {@link RoleFactory} instances
65: * @param owner the role owner
66: * @since 4.0-ALPHA-2
67: **********************************************************************************************************************************************************/
68: @Nonnull @SuppressWarnings("unchecked")
69: public static <T> Collection<Object> resolveFactories (@Nonnull final T owner, @Nonnull final Iterable<Object> roleOrFactories)
70: {
71: final List<Object> result = new ArrayList<>();
72:
73:• for (final var roleOrFactory : roleOrFactories)
74: {
75:• if (roleOrFactory instanceof RoleFactory)
76: {
77: ((RoleFactory<T, ?>)roleOrFactory).createRoleFor(owner).ifPresent(result::add);
78: }
79: else
80: {
81: result.add(roleOrFactory);
82: }
83: }
84:
85: return result;
86: }
87: }