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1 package com.ibatis.struts.httpmap;
2
3 import java.util.*;
4
5
11 public abstract class BaseHttpMap implements Map {
12
13 public int size() {
14 return keySet().size();
15 }
16
17 public boolean isEmpty() {
18 return keySet().size() == 0;
19 }
20
21 public boolean containsKey(Object key) {
22 return keySet().contains(key);
23 }
24
25 public boolean containsValue(Object value) {
26 return values().contains(value);
27 }
28
29 public Object get(Object key) {
30 return getValue(key);
31 }
32
33 public Object put(Object key, Object value) {
34 Object old = getValue(key);
35 putValue(key, value);
36 return old;
37 }
38
39 public Object remove(Object key) {
40 Object old = getValue(key);
41 removeValue(key);
42 return old;
43 }
44
45 public void putAll(Map map) {
46 Iterator i = map.keySet().iterator();
47 while (i.hasNext()) {
48 Object key = i.next();
49 putValue(key, map.get(key));
50 }
51 }
52
53 public void clear() {
54 Iterator i = keySet().iterator();
55 while (i.hasNext()) {
56 removeValue(i.next());
57 }
58 }
59
60 public Set keySet() {
61 Set keySet = new HashSet();
62 Enumeration enum = getNames();
63 while (enum.hasMoreElements()) {
64 keySet.add(enum.nextElement());
65 }
66 return keySet;
67 }
68
69 public Collection values() {
70 List list = new ArrayList();
71 Enumeration enum = getNames();
72 while (enum.hasMoreElements()) {
73 list.add(getValue(enum.nextElement()));
74 }
75 return list;
76 }
77
78 public Set entrySet() {
79 return new HashSet();
80 }
81
82
83 protected abstract Enumeration getNames();
84
85 protected abstract Object getValue(Object key);
86
87 protected abstract void putValue(Object key, Object value);
88
89 protected abstract void removeValue(Object key);
90
91 }
92 |
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