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Package: AsDelegate
AsDelegate
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| AsDelegate(Function, Object, Collection) |
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| AsDelegate(Object) |
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| AsDelegate(Object, Collection) |
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| AsDelegate(Object, Object) |
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| asMany(Class) |
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| lambda$new$1(Function, Object) |
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| maybeAs(Class) |
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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.impl;
27:
28: import jakarta.annotation.Nonnull;
29: import java.util.ArrayList;
30: import java.util.Collection;
31: import java.util.Collections;
32: import java.util.List;
33: import java.util.Optional;
34: import java.util.function.Function;
35: import it.tidalwave.util.As;
36: import it.tidalwave.util.LazySupplier;
37: import it.tidalwave.util.Parameters;
38: import it.tidalwave.util.RoleFactory;
39: import it.tidalwave.role.spi.OwnerRoleFactory;
40: import it.tidalwave.role.spi.OwnerRoleFactoryProvider;
41: import static it.tidalwave.util.Parameters.r;
42:
43: /***************************************************************************************************************************************************************
44: *
45: * An implementation of {@link As} that keeps some local roles and queries {@link OwnerRoleFactory}.
46: *
47: * @author Fabrizio Giudici
48: *
49: **************************************************************************************************************************************************************/
50: public class AsDelegate implements As
51: {
52: @Nonnull
53: private final LazySupplier<OwnerRoleFactory> ownerRoleFactory;
54:
55: @Nonnull
56: private final List<Object> roles = new ArrayList<>();
57:
58: /***********************************************************************************************************************************************************
59: * Constructor for use in composition.
60: * @param owner the owner
61: * @since 3.2-ALPHA-3 (refactored)
62: **********************************************************************************************************************************************************/
63: public AsDelegate (@Nonnull final Object owner)
64: {
65: this(owner, Collections.emptyList());
66: }
67:
68: /***********************************************************************************************************************************************************
69: * Constructor for use in composition. In addition to the mandatory owner, it accepts a single pre-instantiated role, or a {@link RoleFactory} that will be
70: * invoked to create additional roles.
71: * @param owner the owner
72: * @param role the role or {@link it.tidalwave.util.RoleFactory}
73: * @since 3.2-ALPHA-3
74: **********************************************************************************************************************************************************/
75: public AsDelegate (@Nonnull final Object owner, @Nonnull final Object role)
76: {
77: this(owner, r(Parameters.mustNotBeArrayOrCollection(role, "role")));
78: }
79:
80: /***********************************************************************************************************************************************************
81: * Constructor for use in composition. In addition to the mandatory owner, it accepts a collection of pre-instantiated roles, or instances of
82: * {@link RoleFactory} that will be invoked to create additional roles.
83: * @param owner the owner
84: * @param roles roles or {@link it.tidalwave.util.RoleFactory} instances
85: * @since 3.2-ALPHA-3 (refactored)
86: **********************************************************************************************************************************************************/
87: public AsDelegate (@Nonnull final Object owner, @Nonnull final Collection<Object> roles)
88: {
89: this(o -> OwnerRoleFactoryProvider.getInstance().createRoleFactory(o), owner, roles);
90: }
91:
92: /***********************************************************************************************************************************************************
93: * Constructor for use in tests. This constructor doesn't call {@link OwnerRoleFactoryProvider#getInstance()}.
94: * @param systemRoleFactoryFunction the factory
95: * @param owner the owner
96: * @param roles roles or {@link it.tidalwave.util.RoleFactory} instances
97: * @since 3.2-ALPHA-3 (refactored)
98: **********************************************************************************************************************************************************/
99: public AsDelegate (@Nonnull final Function<Object, OwnerRoleFactory> systemRoleFactoryFunction,
100: @Nonnull final Object owner,
101: @Nonnull final Collection<Object> roles)
102: {
103: ownerRoleFactory = LazySupplier.of(() -> systemRoleFactoryFunction.apply(owner));
104: this.roles.addAll(RoleFactory.resolveFactories(owner, roles));
105: }
106:
107: /***********************************************************************************************************************************************************
108: * {@inheritDoc}
109: **********************************************************************************************************************************************************/
110: @Override @Nonnull
111: public <T> Optional<T> maybeAs (@Nonnull final Class<? extends T> type)
112: {
113:• for (final var role : roles)
114: {
115:• if (type.isAssignableFrom(role.getClass()))
116: {
117: return Optional.of(type.cast(role));
118: }
119: }
120:
121: final var r = ownerRoleFactory.get().findRoles(type);
122:• return r.isEmpty() ? Optional.empty() : Optional.of(r.iterator().next());
123: }
124:
125: /***********************************************************************************************************************************************************
126: * {@inheritDoc}
127: **********************************************************************************************************************************************************/
128: @Override @Nonnull
129: public <T> Collection<T> asMany (@Nonnull final Class<? extends T> type)
130: {
131: final var results = new ArrayList<T>();
132:
133:• for (final var role : roles)
134: {
135:• if (type.isAssignableFrom(role.getClass()))
136: {
137: results.add(type.cast(role));
138: }
139: }
140:
141: results.addAll(ownerRoleFactory.get().findRoles(type));
142: return results;
143: }
144: }