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1
18 package org.apache.activemq.kaha.impl.container;
19
20 import java.util.ArrayList  ;
21 import java.util.Collection ;
22 import java.util.Iterator ;
23 import java.util.LinkedList ;
24 import java.util.List ;
25
26 import org.apache.activemq.kaha.impl.index.IndexItem;
27 import org.apache.activemq.kaha.impl.index.IndexLinkedList;
28
29
34 class ContainerValueCollection extends ContainerCollectionSupport implements Collection {
35
36
37 ContainerValueCollection(MapContainerImpl container){
38 super(container);
39 }
40
41
42
43 public boolean contains(Object o){
44 return container.containsValue(o);
45 }
46
47
48 public Iterator iterator(){
49 IndexLinkedList list=container.getItemList();
50 return new ContainerValueCollectionIterator(container,list,list.getRoot());
51 }
52
53
54 public Object [] toArray(){
55 Object [] result = null;
56 IndexLinkedList list = container.getItemList();
57 synchronized(list){
58 result = new Object [list.size()];
59 IndexItem item = list.getFirst();
60 int count = 0;
61 while (item != null){
62 Object value=container.getValue(item);
63 result[count++] = value;
64
65 item = list.getNextEntry(item);
66 }
67
68
69 }
70 return result;
71 }
72
73 public Object [] toArray(Object [] result){
74 IndexLinkedList list=container.getItemList();
75 synchronized(list){
76 if(result.length<=list.size()){
77 IndexItem item = list.getFirst();
78 int count = 0;
79 while (item != null){
80 Object value=container.getValue(item);
81 result[count++] = value;
82
83 item = list.getNextEntry(item);
84 }
85 }
86 }
87 return result;
88 }
89
90
91 public boolean add(Object o){
92 throw new UnsupportedOperationException ("Can't add an object here");
93 }
94
95
96 public boolean remove(Object o){
97 return container.removeValue(o);
98 }
99
100
101 public boolean containsAll(Collection c){
102 boolean result = !c.isEmpty();
103 for (Iterator i = c.iterator(); i.hasNext(); ){
104 if (!contains(i.next())){
105 result = false;
106 break;
107 }
108 }
109 return result;
110 }
111
112
113 public boolean addAll(Collection c){
114 throw new UnsupportedOperationException ("Can't add everything here!");
115 }
116
117
118 public boolean removeAll(Collection c){
119 boolean result = true;
120 for (Iterator i = c.iterator(); i.hasNext(); ){
121 Object obj = i.next();
122 result&=remove(obj);
123 }
124 return result;
125 }
126
127
128 public boolean retainAll(Collection c){
129 List tmpList = new ArrayList ();
130 for (Iterator i = c.iterator(); i.hasNext(); ){
131 Object o = i.next();
132 if (!contains(o)){
133 tmpList.add(o);
134 }
135 }
136 for(Iterator i = tmpList.iterator(); i.hasNext();){
137 remove(i.next());
138 }
139 return !tmpList.isEmpty();
140 }
141
142
143 public void clear(){
144 container.clear();
145 }
146 }
147 |
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