AbstractCollectionDoubleCollection


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.collections.primitives.adapters;
18  
19  import java.util.Collection  ;
20  
21  import org.apache.commons.collections.primitives.DoubleCollection;
22  import org.apache.commons.collections.primitives.DoubleIterator;
23  
24  /**
25   * @since Commons Primitives 1.0
26   * @version $Revision: 480462 $ $Date: 2006-11-29 00:15:00 -0800 (Wed, 29 Nov 2006) $
27   * @author Rodney Waldhoff 
28   */
29  abstract class AbstractCollectionDoubleCollection implements DoubleCollection {
30      protected AbstractCollectionDoubleCollection() {
31      }
32  
33      public boolean add(double element) {
34          return getCollection().add(new Double  (element));
35      }
36          
37      public boolean addAll(DoubleCollection c) {
38          return getCollection().addAll(DoubleCollectionCollection.wrap(c));
39      }
40      
41      public void clear() {
42          getCollection().clear();
43      }
44  
45      public boolean contains(double element) {
46          return getCollection().contains(new Double  (element));
47      }
48      
49      public boolean containsAll(DoubleCollection c) {
50          return getCollection().containsAll(DoubleCollectionCollection.wrap(c));
51      }        
52      
53      public String   toString() {
54          return getCollection().toString();
55      }
56  
57      public boolean isEmpty() {
58          return getCollection().isEmpty();
59      }
60      
61      /**
62       * {@link IteratorDoubleIterator#wrap wraps} the 
63       * {@link java.util.Iterator Iterator}
64       * returned by my underlying 
65       * {@link Collection Collection}, 
66       * if any.
67       */
68      public DoubleIterator iterator() {
69          return IteratorDoubleIterator.wrap(getCollection().iterator());
70      }
71       
72      public boolean removeElement(double element) {
73          return getCollection().remove(new Double  (element));
74      }
75      
76      public boolean removeAll(DoubleCollection c) {
77          return getCollection().removeAll(DoubleCollectionCollection.wrap(c));
78      }
79          
80      public boolean retainAll(DoubleCollection c) {
81          return getCollection().retainAll(DoubleCollectionCollection.wrap(c));
82      }
83      
84      public int size() {
85          return getCollection().size();
86      }
87      
88      public double[] toArray() {
89          Object  [] src = getCollection().toArray();
90          double[] dest = new double[src.length];
91          for(int i=0;i<src.length;i++) {
92              dest[i] = ((Number  )(src[i])).doubleValue();
93          }
94          return dest;
95      }
96      
97      public double[] toArray(double[] dest) {
98          Object  [] src = getCollection().toArray();
99          if(dest.length < src.length) {
100             dest = new double[src.length];
101         }
102         for(int i=0;i<src.length;i++) {
103             dest[i] = ((Number  )(src[i])).doubleValue();
104         }
105         return dest;
106     }
107     
108     protected abstract Collection   getCollection();
109     
110 }
111
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