Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
Conditional |
|
| 1.0;1 |
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 org.apache.commons.functor.BinaryFunction; | |
20 | import org.apache.commons.functor.BinaryPredicate; | |
21 | import org.apache.commons.functor.BinaryProcedure; | |
22 | import org.apache.commons.functor.Function; | |
23 | import org.apache.commons.functor.Predicate; | |
24 | import org.apache.commons.functor.Procedure; | |
25 | import org.apache.commons.functor.UnaryFunction; | |
26 | import org.apache.commons.functor.UnaryPredicate; | |
27 | import org.apache.commons.functor.UnaryProcedure; | |
28 | ||
29 | /** | |
30 | * Utility methods for creating conditional functors. | |
31 | * @version $Revision: 1166380 $ $Date: 2011-09-07 22:18:14 +0200 (Wed, 07 Sep 2011) $ | |
32 | * @author Rodney Waldhoff | |
33 | */ | |
34 | public final class Conditional { | |
35 | ||
36 | // constructor - for beanish apis | |
37 | // ------------------------------------------------------------------------ | |
38 | ||
39 | /** | |
40 | * <p>{@code Conditional} instances should NOT be constructed in | |
41 | * standard programming. Instead, the methods of the class should be invoked | |
42 | * statically.</p> | |
43 | * | |
44 | * <p>This constructor is public to permit tools that require a JavaBean | |
45 | * instance to operate.</p> | |
46 | */ | |
47 | 2 | public Conditional() { } |
48 | ||
49 | // ------------------------------------------------------------------------ | |
50 | ||
51 | /** | |
52 | * Create a guarded Procedure. | |
53 | * @param q if | |
54 | * @param r then | |
55 | * @return Procedure | |
56 | */ | |
57 | public static Procedure procedure(Predicate q, Procedure r) { | |
58 | 0 | return new ConditionalProcedure(q, r); |
59 | } | |
60 | ||
61 | /** | |
62 | * Create a conditional Procedure. | |
63 | * @param q if | |
64 | * @param r then | |
65 | * @param s else | |
66 | * @return Procedure | |
67 | */ | |
68 | public static Procedure procedure(Predicate q, Procedure r, Procedure s) { | |
69 | 0 | return new ConditionalProcedure(q, r, s); |
70 | } | |
71 | ||
72 | /** | |
73 | * Create a conditional Function. | |
74 | * @param q if | |
75 | * @param r then | |
76 | * @param s else | |
77 | * @return Function<T> | |
78 | */ | |
79 | public static <T> Function<T> function(Predicate q, Function<? extends T> r, Function<? extends T> s) { | |
80 | 0 | return new ConditionalFunction<T>(q, r, s); |
81 | } | |
82 | ||
83 | /** | |
84 | * Create a conditional Predicate. | |
85 | * @param q if | |
86 | * @param r then | |
87 | * @param s else | |
88 | * @return Predicate | |
89 | */ | |
90 | public static Predicate predicate(Predicate q, Predicate r, Predicate s) { | |
91 | 0 | return new ConditionalPredicate(q, r, s); |
92 | } | |
93 | ||
94 | /** | |
95 | * Create a guarded UnaryProcedure. | |
96 | * @param q if | |
97 | * @param r then | |
98 | * @return UnaryProcedure<A> | |
99 | */ | |
100 | public static <A> UnaryProcedure<A> procedure(UnaryPredicate<? super A> q, UnaryProcedure<? super A> r) { | |
101 | 0 | return new ConditionalUnaryProcedure<A>(q, r); |
102 | } | |
103 | ||
104 | /** | |
105 | * Create a conditional UnaryProcedure. | |
106 | * @param q if | |
107 | * @param r then | |
108 | * @param s else | |
109 | * @return UnaryProcedure<A> | |
110 | */ | |
111 | public static <A> UnaryProcedure<A> procedure(UnaryPredicate<? super A> q, UnaryProcedure<? super A> r, | |
112 | UnaryProcedure<? super A> s) { | |
113 | 2 | return new ConditionalUnaryProcedure<A>(q, r, s); |
114 | } | |
115 | ||
116 | /** | |
117 | * Create a conditional UnaryFunction. | |
118 | * @param q if | |
119 | * @param r then | |
120 | * @param s else | |
121 | * @return UnaryFunction<A, T> | |
122 | */ | |
123 | public static <A, T> UnaryFunction<A, T> function(UnaryPredicate<? super A> q, | |
124 | UnaryFunction<? super A, ? extends T> r, UnaryFunction<? super A, ? extends T> s) { | |
125 | 2 | return new ConditionalUnaryFunction<A, T>(q, r, s); |
126 | } | |
127 | ||
128 | /** | |
129 | * Create a conditional UnaryPredicate. | |
130 | * @param q if | |
131 | * @param r then | |
132 | * @param s else | |
133 | * @return UnaryPredicate<A> | |
134 | */ | |
135 | public static <A> UnaryPredicate<A> predicate(UnaryPredicate<? super A> q, UnaryPredicate<? super A> r, | |
136 | UnaryPredicate<? super A> s) { | |
137 | 2 | return new ConditionalUnaryPredicate<A>(q, r, s); |
138 | } | |
139 | ||
140 | /** | |
141 | * Create a guarded BinaryProcedure. | |
142 | * @param q if | |
143 | * @param r then | |
144 | * @return BinaryProcedure<L, R> | |
145 | */ | |
146 | public static <L, R> BinaryProcedure<L, R> procedure(BinaryPredicate<? super L, ? super R> q, | |
147 | BinaryProcedure<? super L, ? super R> r) { | |
148 | 0 | return new ConditionalBinaryProcedure<L, R>(q, r); |
149 | } | |
150 | ||
151 | /** | |
152 | * Create a conditional BinaryProcedure. | |
153 | * @param q if | |
154 | * @param r then | |
155 | * @param s else | |
156 | * @return BinaryProcedure<L, R> | |
157 | */ | |
158 | public static <L, R> BinaryProcedure<L, R> procedure(BinaryPredicate<? super L, ? super R> q, | |
159 | BinaryProcedure<? super L, ? super R> r, BinaryProcedure<? super L, ? super R> s) { | |
160 | 2 | return new ConditionalBinaryProcedure<L, R>(q, r, s); |
161 | } | |
162 | ||
163 | /** | |
164 | * Create a conditional BinaryFunction. | |
165 | * @param q if | |
166 | * @param r then | |
167 | * @param s else | |
168 | * @return BinaryFunction<L, R, T> | |
169 | */ | |
170 | public static <L, R, T> BinaryFunction<L, R, T> function(BinaryPredicate<? super L, ? super R> q, | |
171 | BinaryFunction<? super L, ? super R, ? extends T> r, BinaryFunction<? super L, ? super R, ? extends T> s) { | |
172 | 6 | return new ConditionalBinaryFunction<L, R, T>(q, r, s); |
173 | } | |
174 | ||
175 | /** | |
176 | * Create a conditional BinaryPredicate. | |
177 | * @param q if | |
178 | * @param r then | |
179 | * @param s else | |
180 | * @return BinaryPredicate<L, R> | |
181 | */ | |
182 | public static <L, R> BinaryPredicate<L, R> predicate(BinaryPredicate<? super L, ? super R> q, | |
183 | BinaryPredicate<? super L, ? super R> r, BinaryPredicate<? super L, ? super R> s) { | |
184 | 2 | return new ConditionalBinaryPredicate<L, R>(q, r, s); |
185 | } | |
186 | ||
187 | } |