Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
TransformedBinaryProcedure |
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| 1.5;1.5 | ||||
TransformedBinaryProcedure$1 |
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| 1.5;1.5 | ||||
TransformedBinaryProcedure$Helper |
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| 1.5;1.5 |
1 | /* | |
2 | * Licensed to the Apache Software Foundation (ASF) under one or more | |
3 | * contributor license agreements. See the NOTICE file distributed with | |
4 | * this work for additional information regarding copyright ownership. | |
5 | * The ASF licenses this file to You under the Apache License, Version 2.0 | |
6 | * (the "License"); you may not use this file except in compliance with | |
7 | * the License. You may obtain a copy of the License at | |
8 | * | |
9 | * http://www.apache.org/licenses/LICENSE-2.0 | |
10 | * | |
11 | * Unless required by applicable law or agreed to in writing, software | |
12 | * distributed under the License is distributed on an "AS IS" BASIS, | |
13 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
14 | * See the License for the specific language governing permissions and | |
15 | * limitations under the License. | |
16 | */ | |
17 | package org.apache.commons.functor.core.composite; | |
18 | ||
19 | import java.io.Serializable; | |
20 | ||
21 | import org.apache.commons.functor.BinaryFunction; | |
22 | import org.apache.commons.functor.BinaryProcedure; | |
23 | import org.apache.commons.functor.UnaryProcedure; | |
24 | ||
25 | /** | |
26 | * A BinaryProcedure composed of a BinaryFunction whose result is then run through a UnaryProcedure. | |
27 | * @version $Revision: 1171154 $ $Date: 2011-09-15 17:58:38 +0200 (Thu, 15 Sep 2011) $ | |
28 | * @author Matt Benson | |
29 | */ | |
30 | public class TransformedBinaryProcedure<L, R> implements BinaryProcedure<L, R>, Serializable { | |
31 | /** | |
32 | * serialVersionUID declaration. | |
33 | */ | |
34 | private static final long serialVersionUID = -7559182250073101798L; | |
35 | ||
36 | /** | |
37 | * Type-remembering helper | |
38 | * @param <X> | |
39 | */ | |
40 | 0 | private static final class Helper<X, L, R> implements BinaryProcedure<L, R>, Serializable { |
41 | /** | |
42 | * serialVersionUID declaration. | |
43 | */ | |
44 | private static final long serialVersionUID = -4229496007094829301L; | |
45 | private BinaryFunction<? super L, ? super R, ? extends X> function; | |
46 | private UnaryProcedure<? super X> procedure; | |
47 | ||
48 | /** | |
49 | * Create a new Helper. | |
50 | * @param function BinaryFunction | |
51 | * @param procedure UnaryFunction | |
52 | */ | |
53 | private Helper(BinaryFunction<? super L, ? super R, ? extends X> function, | |
54 | 0 | UnaryProcedure<? super X> procedure) { |
55 | 0 | this.function = function; |
56 | 0 | this.procedure = procedure; |
57 | 0 | } |
58 | ||
59 | /** | |
60 | * {@inheritDoc} | |
61 | */ | |
62 | public void run(L left, R right) { | |
63 | 0 | procedure.run(function.evaluate(left, right)); |
64 | 0 | } |
65 | } | |
66 | ||
67 | private final Helper<?, L, R> helper; | |
68 | ||
69 | /** | |
70 | * Create a new TransformedBinaryProcedure. | |
71 | * @param <X> | |
72 | * @param function BinaryFunction | |
73 | * @param procedure UnaryProcedure | |
74 | */ | |
75 | public <X> TransformedBinaryProcedure(BinaryFunction<? super L, ? super R, ? extends X> function, | |
76 | 0 | UnaryProcedure<? super X> procedure) { |
77 | 0 | this.helper = new Helper<X, L, R>(function, procedure); |
78 | 0 | } |
79 | ||
80 | /** | |
81 | * {@inheritDoc} | |
82 | */ | |
83 | public final void run(L left, R right) { | |
84 | 0 | helper.run(left, right); |
85 | 0 | } |
86 | ||
87 | /** | |
88 | * {@inheritDoc} | |
89 | */ | |
90 | @Override | |
91 | public final boolean equals(Object obj) { | |
92 | 0 | return obj == this || obj instanceof TransformedBinaryProcedure<?, ?> |
93 | && equals((TransformedBinaryProcedure<?, ?>) obj); | |
94 | } | |
95 | ||
96 | /** | |
97 | * Learn whether another TransformedBinaryProcedure is equal to <code>this</code>. | |
98 | * @param that instance to test | |
99 | * @return whether equal | |
100 | */ | |
101 | public final boolean equals(TransformedBinaryProcedure<?, ?> that) { | |
102 | 0 | return that != null && that.helper.function.equals(this.helper.function) |
103 | && that.helper.procedure.equals(this.helper.procedure); | |
104 | } | |
105 | ||
106 | /** | |
107 | * {@inheritDoc} | |
108 | */ | |
109 | @Override | |
110 | public int hashCode() { | |
111 | 0 | int result = "TransformedBinaryProcedure".hashCode(); |
112 | 0 | result <<= 2; |
113 | 0 | result |= helper.procedure.hashCode(); |
114 | 0 | result <<= 2; |
115 | 0 | result |= helper.function.hashCode(); |
116 | 0 | return result; |
117 | } | |
118 | ||
119 | /** | |
120 | * {@inheritDoc} | |
121 | */ | |
122 | @Override | |
123 | public String toString() { | |
124 | 0 | return "TransformedBinaryProcedure<" + helper.function + "; " + helper.procedure + ">"; |
125 | } | |
126 | } |