Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
TransformedProcedure |
|
| 1.5;1.5 | ||||
TransformedProcedure$1 |
|
| 1.5;1.5 | ||||
TransformedProcedure$Helper |
|
| 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.Function; | |
22 | import org.apache.commons.functor.Procedure; | |
23 | import org.apache.commons.functor.UnaryProcedure; | |
24 | ||
25 | /** | |
26 | * A Procedure composed of a Function 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 TransformedProcedure implements Procedure, Serializable { | |
31 | /** | |
32 | * serialVersionUID declaration. | |
33 | */ | |
34 | private static final long serialVersionUID = -4111958123789033410L; | |
35 | ||
36 | /** Base hash integer used to shift hash */ | |
37 | private static final int HASH_SHIFT = 2; | |
38 | ||
39 | /** | |
40 | * Type-remembering helper | |
41 | * @param <X> | |
42 | */ | |
43 | 0 | private static final class Helper<X> implements Procedure, Serializable { |
44 | /** | |
45 | * serialVersionUID declaration. | |
46 | */ | |
47 | private static final long serialVersionUID = -4093503167446891318L; | |
48 | private Function<? extends X> function; | |
49 | private UnaryProcedure<? super X> procedure; | |
50 | ||
51 | /** | |
52 | * Create a new Helper. | |
53 | * @param function Function | |
54 | * @param procedure UnaryFunction | |
55 | */ | |
56 | 0 | private Helper(Function<? extends X> function, UnaryProcedure<? super X> procedure) { |
57 | 0 | this.function = function; |
58 | 0 | this.procedure = procedure; |
59 | 0 | } |
60 | ||
61 | /** | |
62 | * {@inheritDoc} | |
63 | */ | |
64 | public void run() { | |
65 | 0 | procedure.run(function.evaluate()); |
66 | 0 | } |
67 | } | |
68 | ||
69 | private final Helper<?> helper; | |
70 | ||
71 | /** | |
72 | * Create a new TransformedProcedure. | |
73 | * @param <X> | |
74 | * @param function Function | |
75 | * @param procedure UnaryProcedure | |
76 | */ | |
77 | 0 | public <X> TransformedProcedure(Function<? extends X> function, UnaryProcedure<? super X> procedure) { |
78 | 0 | this.helper = new Helper<X>(function, procedure); |
79 | 0 | } |
80 | ||
81 | /** | |
82 | * {@inheritDoc} | |
83 | */ | |
84 | public final void run() { | |
85 | 0 | helper.run(); |
86 | 0 | } |
87 | ||
88 | /** | |
89 | * {@inheritDoc} | |
90 | */ | |
91 | @Override | |
92 | public final boolean equals(Object obj) { | |
93 | 0 | return obj == this || obj instanceof TransformedProcedure |
94 | && equals((TransformedProcedure) obj); | |
95 | } | |
96 | ||
97 | /** | |
98 | * Learn whether another TransformedProcedure is equal to <code>this</code>. | |
99 | * @param that instance to test | |
100 | * @return whether equal | |
101 | */ | |
102 | public final boolean equals(TransformedProcedure that) { | |
103 | 0 | return that != null && that.helper.function.equals(this.helper.function) |
104 | && that.helper.procedure.equals(this.helper.procedure); | |
105 | } | |
106 | ||
107 | /** | |
108 | * {@inheritDoc} | |
109 | */ | |
110 | @Override | |
111 | public int hashCode() { | |
112 | 0 | int result = "TransformedProcedure".hashCode(); |
113 | 0 | result <<= HASH_SHIFT; |
114 | 0 | result |= helper.procedure.hashCode(); |
115 | 0 | result <<= HASH_SHIFT; |
116 | 0 | result |= helper.function.hashCode(); |
117 | 0 | return result; |
118 | } | |
119 | ||
120 | /** | |
121 | * {@inheritDoc} | |
122 | */ | |
123 | @Override | |
124 | public String toString() { | |
125 | 0 | return "TransformedProcedure<" + helper.function + "; " + helper.procedure + ">"; |
126 | } | |
127 | } |