|
1
9 package org.jboss.portal.server.util;
10
11 import org.jboss.portal.common.util.Tools;
12
13 import java.util.ArrayList  ;
14 import java.util.HashMap ;
15 import java.util.List ;
16 import java.util.Map ;
17 import java.util.Collections ;
18 import java.util.Iterator ;
19 import java.util.Set ;
20
21
27 public class Properties
28 {
29
30 private Map content;
31
32 public Properties()
33 {
34 }
35
36
41 public void addProperty(String name, String value)
42 {
43 if (name == null)
44 {
45 throw new IllegalArgumentException ("Name cannot be null");
46 }
47 if (value == null)
48 {
49 throw new IllegalArgumentException ("Value cannot be null");
50 }
51 if (content == null)
52 {
53 content = new HashMap ();
54 }
55 Object o = content.get(name);
56 if (o == null)
57 {
58 content.put(name, value);
59 }
60 else if (o instanceof String )
61 {
62 ArrayList values = new ArrayList ();
63 values.add(o);
64 values.add(value);
65 content.put(name, values);
66 }
67 else
68 {
69 ArrayList values = (ArrayList )o;
70 values.add(value);
71 }
72 }
73
74
79 public void setProperty(String name, String value)
80 {
81 if (name == null)
82 {
83 throw new IllegalArgumentException ("Name cannot be null");
84 }
85 if (value == null)
86 {
87 throw new IllegalArgumentException ("Value cannot be null");
88 }
89 if (content == null)
90 {
91 content = new HashMap ();
92 }
93 content.put(name, value);
94 }
95
96
99 public void clear()
100 {
101 if (content != null)
102 {
103 content.clear();
104 }
105 }
106
107 public String getProperty(String name)
108 {
109 if (name == null)
110 {
111 throw new IllegalArgumentException ("Name cannot be null");
112 }
113 if (content == null)
114 {
115 return null;
116 }
117 Object o = content.get(name);
118 if (o == null)
119 {
120 return null;
121 }
122 else if (o instanceof String )
123 {
124 return (String )o;
125 }
126 else
127 {
128 return (String )((ArrayList )o).get(0);
129 }
130 }
131
132
137 public List getProperties(String name)
138 {
139 if (name == null)
140 {
141 throw new IllegalArgumentException ("Name cannot be null");
142 }
143 if (content == null)
144 {
145 return Collections.EMPTY_LIST;
146 }
147 Object o = content.get(name);
148 if (o == null)
149 {
150 return Collections.EMPTY_LIST;
151 }
152 if (o instanceof String )
153 {
154 return Collections.singletonList(o);
155 }
156 else
157 {
158 return (List )o;
159 }
160 }
161
162 public Set getPropertyNames()
163 {
164 if (content == null)
165 {
166 return Collections.EMPTY_SET;
167 }
168 return content.keySet();
169 }
170 }
171 |
Popular Tags |
Java API By Example, From Geeks To Geeks.