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1 package org.sapia.validator;
2
3 import java.util.ArrayList  ;
4 import java.util.HashMap ;
5 import java.util.List ;
6 import java.util.Map ;
7 import java.util.StringTokenizer ;
8
9
20 class Hierarchy {
21 private ErrorMessage _msg;
22 private Hierarchy _parent;
23 private Map _children = new HashMap ();
24
25
28 Hierarchy(Hierarchy parent) {
29 _parent = parent;
30 }
31
32 void bind(ErrorMessage msg) {
33 if (msg.getLocale() == null) {
34 _msg = msg;
35 } else {
36 String [] path = split(msg.getLocale());
37
38 bind(msg, path, 0);
39 }
40 }
41
42 ErrorMessage lookup(String locale) {
43 if ((locale == null) || (locale.length() == 0)) {
44 return _msg;
45 }
46
47 String [] path = split(locale);
48
49 return lookup(path, 0);
50 }
51
52 ErrorMessage reverseLookup(String locale) {
53 if ((locale == null) || (locale.length() == 0)) {
54 return _msg;
55 }
56
57 String [] path = split(locale);
58
59 return reverselookup(path, 0);
60 }
61
62 private ErrorMessage reverselookup(String [] path, int index) {
63 if (index >= path.length) {
64 if ((_msg == null) && (_parent != null)) {
65 return _parent.reverse();
66 }
67
68 return _msg;
69 }
70
71 Hierarchy h = (Hierarchy) _children.get(path[index]);
72 if (h == null) {
73 if(_msg != null){
74 return _msg;
75 }
76 else if (_parent != null) {
77 return _parent.reverse();
78 }
79 return null;
80 } else {
81 return h.reverselookup(path, ++index);
82 }
83 }
84
85 private ErrorMessage reverse() {
86 if (_msg != null) {
87 return _msg;
88 } else if (_parent != null) {
89 return _parent.reverse();
90 } else {
91 return null;
92 }
93 }
94
95 private ErrorMessage lookup(String [] path, int index) {
96 if (index >= path.length) {
97 return _msg;
98 }
99
100 Hierarchy h = (Hierarchy) _children.get(path[index]);
101
102 if (h == null) {
103 return null;
104 } else {
105 return h.lookup(path, ++index);
106 }
107 }
108
109 private void bind(ErrorMessage msg, String [] path, int index) {
110 if (index >= path.length) {
111 _msg = msg;
112 } else {
113 Hierarchy h = (Hierarchy) _children.get(path[index]);
114 if (h == null) {
115 h = new Hierarchy(this);
116 _children.put(path[index], h);
117 }
118
119 h.bind(msg, path, ++index);
120 }
121 }
122
123 public ErrorMessage getMessage() {
124 return _msg;
125 }
126
127 private static String [] split(String path) {
128 List parts = new ArrayList ();
129
130 StringTokenizer st = new StringTokenizer (path, "/");
131
132 String token;
133
134 while (st.hasMoreTokens()) {
135 token = st.nextToken();
136 parts.add(token);
137 }
138
139 return (String []) parts.toArray(new String [parts.size()]);
140 }
141 }
142
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