Coverage Report - org.apache.commons.functor.core.comparator.IsWithinRange
 
Classes in this File Line Coverage Branch Coverage Complexity
IsWithinRange
95%
19/20
94%
17/18
2.833
 
 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.comparator;
 18  
 
 19  
 import java.io.Serializable;
 20  
 import org.apache.commons.functor.UnaryPredicate;
 21  
 
 22  
 /**
 23  
  * A {@link UnaryPredicate} that tests whether a {@link Comparable} object is
 24  
  * within a range. The range is defined in the constructor.
 25  
  *
 26  
  * @since 1.0
 27  
  * @version $Revision: 1171154 $ $Date: 2011-09-15 17:58:38 +0200 (Thu, 15 Sep 2011) $
 28  
  * @author  Jason Horman (jason@jhorman.org)
 29  
  */
 30  
 
 31  0
 public class IsWithinRange<A extends Comparable<A>> implements UnaryPredicate<A>, Serializable {
 32  
     /**
 33  
      * serialVersionUID declaration.
 34  
      */
 35  
     private static final long serialVersionUID = -7584005207181667878L;
 36  
 
 37  
     /** Hashcode of the name of this Predicate. */
 38  2
     private static final int NAME_HASH_CODE = "IsWithinRange".hashCode();
 39  
 
 40  
     /** Base Hashcode. */
 41  
     private static final int BASE_HASH_CODE = 29;
 42  
 
 43  
     /***************************************************
 44  
      *  Instance variables
 45  
      ***************************************************/
 46  
 
 47  
     /** The minimum value of the range. */
 48  
     private final A min;
 49  
     /** The maximum value of the range. */
 50  
     private final A max;
 51  
 
 52  
     /***************************************************
 53  
      *  Constructors
 54  
      ***************************************************/
 55  
 
 56  
     /**
 57  
      * Create a new IsWithinRange by passing in the range that will
 58  
      * be used in the {@link #test}.
 59  
      * @param min Comparable
 60  
      * @param max Comparable
 61  
      */
 62  24
     public IsWithinRange(A min, A max) {
 63  24
         if (min == null || max == null) {
 64  2
             throw new IllegalArgumentException("min and max must not be null");
 65  
         }
 66  22
         if (min.compareTo(max) > 0) {
 67  2
             throw new IllegalArgumentException("min must be <= max");
 68  
         }
 69  20
         this.min = min;
 70  20
         this.max = max;
 71  20
     }
 72  
 
 73  
     /***************************************************
 74  
      *  Instance methods
 75  
      ***************************************************/
 76  
 
 77  
     /**
 78  
      * {@inheritDoc}
 79  
      * Test if the passed in object is within the specified range.
 80  
      */
 81  
     public final boolean test(A o) {
 82  32
         return o.compareTo(min) >= 0 && o.compareTo(max) <= 0;
 83  
     }
 84  
 
 85  
     /**
 86  
      * {@inheritDoc}
 87  
      */
 88  
     public final boolean equals(Object o) {
 89  16
         if (this == o) {
 90  2
             return true;
 91  
         }
 92  14
         if (!(o instanceof IsWithinRange<?>)) {
 93  2
             return false;
 94  
         }
 95  12
         final IsWithinRange<?> isWithinRange = (IsWithinRange<?>) o;
 96  12
         return max.equals(isWithinRange.max) && min.equals(isWithinRange.min);
 97  
     }
 98  
 
 99  
     /**
 100  
      * {@inheritDoc}
 101  
      */
 102  
     public int hashCode() {
 103  14
         return BASE_HASH_CODE * min.hashCode() + max.hashCode() + NAME_HASH_CODE;
 104  
     }
 105  
 
 106  
     /**
 107  
      * {@inheritDoc}
 108  
      */
 109  
     public String toString() {
 110  6
         return "IsWithinRange(" + min + ", " + max + ")";
 111  
     }
 112  
 
 113  
     /**
 114  
      * Obtain an IsWithinRange instance.
 115  
      * @param <A>
 116  
      * @param min A
 117  
      * @param max A
 118  
      * @return IsWithinRange<A>
 119  
      */
 120  
     public static <A extends Comparable<A>> IsWithinRange<A> instance(A min, A max) {
 121  2
         return new IsWithinRange<A>(min, max);
 122  
     }
 123  
 }