|
1
22 package org.jboss.repository.spi;
23
24 import java.text.ParseException  ;
25 import java.util.ArrayList ;
26 import java.util.Arrays ;
27 import java.util.HashMap ;
28 import java.util.Map ;
29 import java.util.StringTokenizer ;
30 import java.util.Collections ;
31 import java.util.TreeSet ;
32 import java.util.Iterator ;
33
34 import org.jboss.repository.spi.CommonNames;
35 import org.jboss.util.JBossStringBuilder;
36
37
41 public class Key implements Comparable
42 {
43 private String [] name;
44 private Map attributes;
45 private int level;
46
47 public Key(String nameExpr)
48 throws ParseException
49 {
50 parseName(nameExpr);
51 defineLevel();
52 }
53 public Key(String [] name, Map attributes)
54 {
55 this.name = name;
56 this.attributes = attributes;
57 defineLevel();
58 }
59
60 public Key(String name, Map attributes)
61 {
62 this.name = new String [] {name};
63 this.attributes = attributes;
64 defineLevel();
65 }
66
67 public String [] getName()
68 {
69 return name;
70 }
71 public int getLevel()
72 {
73 return level;
74 }
75 public Map getAttributes()
76 {
77 return Collections.unmodifiableMap(attributes);
78 }
79
80
81 public int compareTo(Object obj)
82 {
83 if( obj instanceof Key == false )
84 throw new ClassCastException ("Argument is not a Key, type="+obj.getClass());
85
86 Key key = (Key) obj;
87 int compare = -name.length + key.name.length;
88 if (compare != 0)
89 {
90 return compare;
91 }
92
93 for (int i = 0 ; i < name.length ; i++)
94 {
95 compare = name[i].compareTo(key.name[i]);
96 if (compare != 0)
97 {
98 return compare;
99 }
100 }
101
102 if( compare == 0 )
103 {
104 Map keyAttrs = key.attributes;
105 if( attributes == null )
106 compare = keyAttrs == null ? 0 : keyAttrs.size();
107 else if( keyAttrs == null )
108 compare = attributes == null ? 0 : attributes.size();
109 else
110 {
111 TreeSet set = new TreeSet (attributes.keySet());
112 set.addAll(keyAttrs.keySet());
113 Iterator keys = set.iterator();
114 while( keys.hasNext() && compare == 0 )
115 {
116 String key1 = (String ) keys.next();
117 String value1 = (String ) attributes.get(key1);
118 String value2 = (String ) keyAttrs.get(key1);
119
120 if (value1 == null && value2 == null)
121 compare = 0;
122 if( value1 == null )
123 compare = -1;
124 else if( value2 == null )
125 compare = 1;
126 else
127 compare = value1.compareTo(value2);
128 }
129 }
130 }
131 return compare;
132 }
133 public boolean equals(Object obj)
134 {
135 return compareTo(obj) == 0;
136 }
137 public int hashCode()
138 {
139 int hashCode = attributes.hashCode();
140 for (int i = 0 ; i < name.length ; i++)
141 {
142 hashCode += name[i].hashCode();
143 }
144 return hashCode;
145 }
146
147 protected void defineLevel()
148 {
149 level = CommonNames.DOMAIN_LEVEL;
150 if( attributes.containsKey(CommonNames.DOMAIN) )
151 level = CommonNames.DOMAIN_LEVEL;
152 if( attributes.containsKey(CommonNames.CLUSTER) )
153 level = CommonNames.CLUSTER_LEVEL;
154 if( attributes.containsKey(CommonNames.SERVER) )
155 level = CommonNames.SERVER_LEVEL;
156 if( attributes.containsKey(CommonNames.APPLICATION) )
157 level = CommonNames.APPLICATION_LEVEL;
158 if( attributes.containsKey(CommonNames.DEPLOYMENT) )
159 level = CommonNames.DEPLOYMENT_LEVEL;
160 if( attributes.containsKey(CommonNames.SESSION) )
161 level = CommonNames.SESSION_LEVEL;
162 }
163
164 protected void parseName(String nameExpr)
165 throws ParseException
166 {
167 int colon = nameExpr.indexOf(':');
168 if( colon < 0 )
169 parseNamePart(nameExpr);
170 else
171 {
172 parseNamePart(nameExpr.substring(0, colon));
173 StringTokenizer tokenizer = new StringTokenizer (nameExpr.substring(colon + 1), ",=");
175 while( tokenizer.hasMoreTokens() )
176 {
177 String key = tokenizer.nextToken();
178 if( tokenizer.hasMoreTokens() == false )
179 {
180 throw new ParseException ("No value for key: "+key, attributes.size());
181 }
182 String value = tokenizer.nextToken();
183
184 if (attributes == null)
185 {
186 attributes = new HashMap ();
187 }
188 attributes.put(key, value);
189 }
190 }
191 }
192
193 private void parseNamePart(String namePart)
194 {
195 ArrayList names = new ArrayList ();
196 StringTokenizer tokenizer = new StringTokenizer (namePart, ",");
197 while (tokenizer.hasMoreTokens())
198 {
199 names.add(tokenizer.nextToken());
200 }
201 name = (String [])names.toArray(new String [names.size()]);
202 }
203
204 public String toString()
205 {
206 JBossStringBuilder sb = new JBossStringBuilder();
207 sb.append("[Key[");
208 sb.append(Arrays.asList(name));
209 sb.append(":");
210
211 boolean first = true;
212 for (Iterator it = attributes.keySet().iterator() ; it.hasNext() ; )
213 {
214 Object key = it.next();
215
216 if (first)
217 {
218 first = false;
219 }
220 else
221 {
222 sb.append(", ");
223 }
224
225 sb.append(key);
226 sb.append("=");
227 sb.append(attributes.get(key));
228 }
229
230 sb.append("]]");
231 return sb.toString();
232 }
233
234 }
235 |
Popular Tags |
Java API By Example, From Geeks To Geeks.