| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| BinaryProcedureUnaryProcedure |
|
| 1.8571428571428572;1.857 |
| 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.adapter; | |
| 18 | ||
| 19 | import org.apache.commons.functor.BinaryProcedure; | |
| 20 | import org.apache.commons.functor.UnaryProcedure; | |
| 21 | ||
| 22 | /** | |
| 23 | * Adapts a BinaryProcedure as a UnaryProcedure by sending the same argument to both sides of the BinaryProcedure. | |
| 24 | * @param <A> the argument type. | |
| 25 | * @version $Revision: 1160375 $ $Date: 2011-08-22 21:17:24 +0200 (Mon, 22 Aug 2011) $ | |
| 26 | * @author Matt Benson | |
| 27 | */ | |
| 28 | public final class BinaryProcedureUnaryProcedure<A> implements UnaryProcedure<A> { | |
| 29 | /** | |
| 30 | * The adapted procedure. | |
| 31 | */ | |
| 32 | private final BinaryProcedure<? super A, ? super A> procedure; | |
| 33 | ||
| 34 | /** | |
| 35 | * Create a new BinaryProcedureUnaryProcedure. | |
| 36 | * @param procedure to adapt | |
| 37 | */ | |
| 38 | 18 | public BinaryProcedureUnaryProcedure(BinaryProcedure<? super A, ? super A> procedure) { |
| 39 | 18 | if (null == procedure) { |
| 40 | 0 | throw new IllegalArgumentException("BinaryProcedure argument was null"); |
| 41 | } | |
| 42 | 18 | this.procedure = procedure; |
| 43 | 18 | } |
| 44 | ||
| 45 | /** | |
| 46 | * {@inheritDoc} | |
| 47 | */ | |
| 48 | public void run(A obj) { | |
| 49 | 2 | procedure.run(obj, obj); |
| 50 | 2 | }; |
| 51 | ||
| 52 | /** | |
| 53 | * {@inheritDoc} | |
| 54 | */ | |
| 55 | @Override | |
| 56 | public boolean equals(Object obj) { | |
| 57 | 20 | return obj == this || obj instanceof BinaryProcedureUnaryProcedure<?> |
| 58 | && equals((BinaryProcedureUnaryProcedure<?>) obj); | |
| 59 | } | |
| 60 | ||
| 61 | /** | |
| 62 | * Learn whether another BinaryProcedureUnaryProcedure is equal to | |
| 63 | * <code>this</code>. | |
| 64 | * | |
| 65 | * @param that BinaryProcedureUnaryProcedure to check | |
| 66 | * | |
| 67 | * @return whether equal | |
| 68 | */ | |
| 69 | public boolean equals(BinaryProcedureUnaryProcedure<?> that) { | |
| 70 | 12 | return that != null && that.procedure.equals(this.procedure); |
| 71 | } | |
| 72 | ||
| 73 | /** | |
| 74 | * {@inheritDoc} | |
| 75 | */ | |
| 76 | @Override | |
| 77 | public int hashCode() { | |
| 78 | 20 | return ("BinaryProcedureUnaryProcedure".hashCode() << 2) | procedure.hashCode(); |
| 79 | } | |
| 80 | ||
| 81 | /** | |
| 82 | * {@inheritDoc} | |
| 83 | */ | |
| 84 | @Override | |
| 85 | public String toString() { | |
| 86 | 16 | return "BinaryProcedureUnaryProcedure<" + procedure + ">"; |
| 87 | } | |
| 88 | ||
| 89 | /** | |
| 90 | * Adapt a BinaryProcedure as a UnaryProcedure. | |
| 91 | * @param <A> argument type | |
| 92 | * @param procedure BinaryProcedure to adapt | |
| 93 | * @return UnaryProcedure<A> | |
| 94 | */ | |
| 95 | public static <A> UnaryProcedure<A> adapt(BinaryProcedure<? super A, ? super A> procedure) { | |
| 96 | 4 | return null == procedure ? null : new BinaryProcedureUnaryProcedure<A>(procedure); |
| 97 | } | |
| 98 | ||
| 99 | } |