Coverage Report - org.dozer.util.CollectionUtils
 
Classes in this File Line Coverage Branch Coverage Complexity
CollectionUtils
97%
37/38
88%
16/18
1.846
 
 1  
 /**
 2  
  * Copyright 2005-2013 Dozer Project
 3  
  *
 4  
  * Licensed under the Apache License, Version 2.0 (the "License");
 5  
  * you may not use this file except in compliance with the License.
 6  
  * You may obtain a copy of the License at
 7  
  *
 8  
  *      http://www.apache.org/licenses/LICENSE-2.0
 9  
  *
 10  
  * Unless required by applicable law or agreed to in writing, software
 11  
  * distributed under the License is distributed on an "AS IS" BASIS,
 12  
  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 13  
  * See the License for the specific language governing permissions and
 14  
  * limitations under the License.
 15  
  */
 16  
 package org.dozer.util;
 17  
 
 18  
 import java.lang.reflect.Array;
 19  
 import java.util.ArrayList;
 20  
 import java.util.Collection;
 21  
 import java.util.HashSet;
 22  
 import java.util.List;
 23  
 import java.util.Set;
 24  
 import java.util.SortedSet;
 25  
 import java.util.TreeSet;
 26  
 
 27  
 /**
 28  
  * Internal class that contains various Collection utilities specific to Dozer requirements. Not intended for direct use
 29  
  * by application code.
 30  
  * 
 31  
  * @author tierney.matt
 32  
  * @author garsombke.franz
 33  
  */
 34  
 public final class CollectionUtils {
 35  
 
 36  0
   private CollectionUtils() {}
 37  
 
 38  
   public static boolean isArray(Class<?> aClass) {
 39  175785
     return aClass.isArray();
 40  
   }
 41  
 
 42  
   public static boolean isCollection(Class<?> aClass) {
 43  175003
     return Collection.class.isAssignableFrom(aClass);
 44  
   }
 45  
 
 46  
   public static boolean isList(Class<?> aClass) {
 47  1235
     return List.class.isAssignableFrom(aClass);
 48  
   }
 49  
 
 50  
   public static boolean isSet(Class<?> aClass) {
 51  938
     return Set.class.isAssignableFrom(aClass);
 52  
   }
 53  
 
 54  
   public static boolean isPrimitiveArray(Class<?> aClass) {
 55  232
     return aClass.isArray() && aClass.getComponentType().isPrimitive();
 56  
   }
 57  
 
 58  
   public static int getLengthOfCollection(Object value) {
 59  109
     if (isArray(value.getClass())) {
 60  19
       return Array.getLength(value);
 61  
     } else {
 62  90
       return ((Collection<?>) value).size();
 63  
     }
 64  
   }
 65  
 
 66  
   public static Object getValueFromCollection(Object collection, int index) {
 67  40
     if (isArray(collection.getClass())) {
 68  3
       return Array.get(collection, index);
 69  
     } else {
 70  37
       return ((Collection<?>) collection).toArray()[index];
 71  
     }
 72  
   }
 73  
 
 74  
   public static <T extends Set<?>> Set<?> createNewSet(Class<T> destType) {
 75  
     Set<Object> result;
 76  55
     if (SortedSet.class.isAssignableFrom(destType)) {
 77  8
       result = new TreeSet<Object>();
 78  
     } else {
 79  47
       result = new HashSet<Object>();
 80  
     }
 81  55
     return result;
 82  
   }
 83  
 
 84  
   public static <T extends Set<?>> Set<?> createNewSet(Class<T> destSetType, Collection<?> srcValue) {
 85  52
     Set<Object> result = (Set<Object>) createNewSet(destSetType);
 86  52
     if (srcValue != null) {
 87  52
       result.addAll(srcValue);
 88  
     }
 89  52
     return result;
 90  
   }
 91  
 
 92  
  public static <T> Object convertListToArray(List<T> list, Class<T> destEntryType) {
 93  
     
 94  99
     Object outArray = Array.newInstance(destEntryType, list.size());
 95  99
     int count = 0;
 96  99
     int size = list.size();
 97  41318
     for (int i = 0; i < size; i++) {
 98  41219
       Object element = list.get(i);
 99  41219
       Array.set(outArray, count, element);
 100  41219
       count++;
 101  
     }
 102  99
     if(destEntryType.isPrimitive())
 103  2
       return outArray;
 104  
     else
 105  97
     return (T[]) outArray;
 106  
   }
 107  
 
 108  
   public static List<Object> convertPrimitiveArrayToList(Object primitiveArray) {
 109  9
     int length = Array.getLength(primitiveArray);
 110  9
     List<Object> result = new ArrayList<Object>(length);
 111  
 
 112  
     // wrap and copy elements
 113  36
     for (int i = 0; i < length; i++) {
 114  27
       result.add(Array.get(primitiveArray, i));
 115  
     }
 116  9
     return result;
 117  
   }
 118  
 
 119  
 
 120  
   public static <E> Set<E> intersection(final Set<E> set1, final Set<?> set2) {
 121  8647
     Set<E> intersection = new HashSet<E>(set1);
 122  8647
     intersection.retainAll(set2);
 123  8647
     return intersection;
 124  
   }
 125  
 }