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1
55 package org.jboss.axis.utils;
56
57 import java.util.Hashtable  ;
58 import java.util.Vector ;
59
60
71 public class LockableHashtable extends Hashtable
72 {
73
74
77 Vector lockedEntries = new Vector ();
78
79
82 private Hashtable parent = null;
83
84 public LockableHashtable()
85 {
86 super();
87 }
88
89 public LockableHashtable(int p1, float p2)
90 {
91 super(p1, p2);
92 }
93
94 public LockableHashtable(java.util.Map p1)
95 {
96 super(p1);
97 }
98
99 public LockableHashtable(int p1)
100 {
101 super(p1);
102 }
103
104
107 public synchronized void setParent(Hashtable parent)
108 {
109 this.parent = parent;
110 }
111
112
116 public synchronized Object get(Object key)
117 {
118 Object ret = super.get(key);
119 if ((ret == null) && (parent != null))
120 {
121 ret = parent.get(key);
122 }
123 return ret;
124 }
125
126
130 public synchronized Object put(Object p1, Object p2, boolean locked)
131 {
132 if (this.containsKey(p1) && lockedEntries.contains(p1))
133 {
134 return null;
135 }
136 if (locked) lockedEntries.add(p1);
137 return super.put(p1, p2);
138 }
139
140
143 public synchronized Object put(Object p1, Object p2)
144 {
145 return put(p1, p2, false);
146 }
147
148
151 public synchronized Object remove(Object p1)
152 {
153 if (lockedEntries.contains(p1))
154 {
155 return null;
156 }
157 if (lockedEntries.contains(p1)) lockedEntries.remove(p1);
158 return super.remove(p1);
159 }
160
161
164 public boolean isKeyLocked(Object key)
165 {
166 return lockedEntries.contains(key);
167 }
168 }
169 |
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