Package: MappingFinder
MappingFinder
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MappingFinder(Finder, Function) |
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MappingFinder(MappingFinder, Object) |
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computeResults() |
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Coverage
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.impl.finder;
27:
28: import javax.annotation.Nonnull;
29: import javax.annotation.concurrent.Immutable;
30: import java.util.List;
31: import java.util.function.Function;
32: import it.tidalwave.util.Finder;
33: import it.tidalwave.util.spi.SimpleFinderSupport;
34: import static java.util.stream.Collectors.*;
35:
36: /***************************************************************************************************************************************************************
37: *
38: * A {@link Finder} which retrieve results from another instance applying a {@link Function}.
39: *
40: * @author Fabrizio Giudici
41: *
42: **************************************************************************************************************************************************************/
43: @Immutable
44: public final class MappingFinder<T, U> extends SimpleFinderSupport<T>
45: {
46: private static final long serialVersionUID = -6359683808082070089L;
47:
48: @Nonnull
49: private final Finder<? extends U> delegate;
50:
51: @Nonnull
52: private final Function<? super U, ? extends T> decorator;
53:
54: public MappingFinder (@Nonnull final Finder<? extends U> delegate,
55: @Nonnull final Function<? super U, ? extends T> decorator)
56: {
57: this.delegate = delegate;
58: this.decorator = decorator;
59: }
60:
61: public MappingFinder (@Nonnull final MappingFinder<T, ?> other, @Nonnull final Object override)
62: {
63: super(other, override);
64: final MappingFinder<T, U> source = getSource(MappingFinder.class, other, override);
65: this.delegate = source.delegate;
66: this.decorator = source.decorator;
67: }
68:
69: @Override @Nonnull
70: protected List<T> computeResults()
71: {
72: return delegate.results().stream().map(decorator).collect(toList());
73: }
74: }