| Classes in this File | Line Coverage | Branch Coverage | Complexity | ||||
| IsSame |
|
| 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; | |
| 18 | ||
| 19 | import java.io.Serializable; | |
| 20 | ||
| 21 | import org.apache.commons.functor.BinaryPredicate; | |
| 22 | import org.apache.commons.functor.UnaryPredicate; | |
| 23 | import org.apache.commons.functor.adapter.RightBoundPredicate; | |
| 24 | ||
| 25 | /** | |
| 26 | * {@link #test Tests} the reference (==) equality of its arguments. | |
| 27 | * | |
| 28 | * @param <L> the left argument type. | |
| 29 | * @param <R> the right argument type. | |
| 30 | * @version $Revision: 1160410 $ $Date: 2011-08-22 22:06:40 +0200 (Mon, 22 Aug 2011) $ | |
| 31 | * @author Matt Benson | |
| 32 | */ | |
| 33 | public final class IsSame<L, R> implements BinaryPredicate<L, R>, Serializable { | |
| 34 | // static attributes | |
| 35 | // ------------------------------------------------------------------------ | |
| 36 | /** | |
| 37 | * Basic IsSame<Object, Object> instance. | |
| 38 | */ | |
| 39 | 2 | public static final IsSame<Object, Object> INSTANCE = IsSame.<Object, Object>instance(); |
| 40 | /** | |
| 41 | * serialVersionUID declaration. | |
| 42 | */ | |
| 43 | private static final long serialVersionUID = 7024585699909734072L; | |
| 44 | ||
| 45 | // constructor | |
| 46 | // ------------------------------------------------------------------------ | |
| 47 | /** | |
| 48 | * Create a new IsSame. | |
| 49 | */ | |
| 50 | 26 | public IsSame() { |
| 51 | 26 | } |
| 52 | ||
| 53 | // predicate interface | |
| 54 | // ------------------------------------------------------------------------ | |
| 55 | /** | |
| 56 | * {@inheritDoc} | |
| 57 | */ | |
| 58 | public boolean test(L left, R right) { | |
| 59 | 26 | return left == right; |
| 60 | } | |
| 61 | ||
| 62 | /** | |
| 63 | * {@inheritDoc} | |
| 64 | */ | |
| 65 | public boolean equals(Object that) { | |
| 66 | 44 | return that instanceof IsSame<?, ?>; |
| 67 | } | |
| 68 | ||
| 69 | /** | |
| 70 | * {@inheritDoc} | |
| 71 | */ | |
| 72 | public int hashCode() { | |
| 73 | 60 | return "IsSame".hashCode(); |
| 74 | } | |
| 75 | ||
| 76 | /** | |
| 77 | * {@inheritDoc} | |
| 78 | */ | |
| 79 | public String toString() { | |
| 80 | 44 | return "IsSame"; |
| 81 | } | |
| 82 | ||
| 83 | // static methods | |
| 84 | // ------------------------------------------------------------------------ | |
| 85 | /** | |
| 86 | * Get an IsSame instance. | |
| 87 | * @param <L> the left argument type. | |
| 88 | * @param <R> the right argument type. | |
| 89 | * @return IsSame | |
| 90 | */ | |
| 91 | public static <L, R> IsSame<L, R> instance() { | |
| 92 | 12 | return new IsSame<L, R>(); |
| 93 | } | |
| 94 | ||
| 95 | /** | |
| 96 | * Get an IsSame UnaryPredicate. | |
| 97 | * @param <L> the left argument type. | |
| 98 | * @param <R> the right argument type. | |
| 99 | * @param object bound comparison object | |
| 100 | * @return UnaryPredicate<L> | |
| 101 | */ | |
| 102 | public static <L, R> UnaryPredicate<L> as(R object) { | |
| 103 | 0 | return new RightBoundPredicate<L>(new IsSame<L, R>(), object); |
| 104 | } | |
| 105 | } |