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1 package org.sapia.archie.impl;
2
3 import java.util.ArrayList  ;
4 import java.util.Iterator ;
5 import java.util.List ;
6 import java.util.Map ;
7
8 import org.sapia.archie.AbstractNode;
9 import org.sapia.archie.Entry;
10 import org.sapia.archie.NameParser;
11 import org.sapia.archie.NamePart;
12 import org.sapia.archie.NodeFactory;
13 import org.sapia.archie.ProcessingException;
14
15
16
27 public class MultiValueNode extends AbstractNode {
28 protected Map _valueLists;
29
30 protected MultiValueNode(Map children, Map values, NodeFactory fac)
31 throws ProcessingException {
32 super(children, fac);
33 _valueLists = values;
34 }
35
36 protected MultiValueNode(NameParser parser, Map children, Map values, NodeFactory fac)
37 throws ProcessingException {
38 super(parser, children, fac);
39 _valueLists = values;
40 }
41
42
51 public Object getValue(NamePart name) {
52 List values = (List ) _valueLists.get(name);
53
54 if (values == null) {
55 return null;
56 }
57
58 Object selected = onSelect(values);
59 if(selected != null){
60 selected = onRead(name, selected);
61 }
62 return selected;
63 }
64
65
68 public Object removeValue(NamePart name) {
69 Object val = getValue(name);
70 _valueLists.remove(name);
71 return val;
72 }
73
74
77 public Iterator getEntries() {
78 Map.Entry entry;
79 Iterator itr = _valueLists.entrySet().iterator();
80 List values;
81 List entries = new ArrayList ();
82 while(itr.hasNext()){
83 entry = (Map.Entry )itr.next();
84 values = (List )entry.getValue();
85 for(int i = 0; i < values.size(); i++){
86 entries.add(new Entry(entry.getKey().toString(), values.get(i)));
87 }
88 }
89 return entries.iterator();
90 }
91
92
95 public boolean putValue(NamePart name, Object value, boolean overwrite) {
96 List values = (List ) _valueLists.get(name);
97
98 if (values == null) {
99 values = new ArrayList ();
100 _valueLists.put(name, values);
101 }
102
103 if (!overwrite && (values.size() != 0)) {
104 return false;
105 }
106
107 Object toBind = onWrite(name, value);
108 if(toBind != null){
109 values.add(toBind);
110 }
111 return true;
112 }
113
114
117 public Iterator getValueNames() {
118 return _valueLists.keySet().iterator();
119 }
120
121
124 public int getValueCount() {
125 return _valueLists.size();
126 }
127
128
131 public int getChildrenCount() {
132 return _valueLists.size();
133 }
134
135
138 public Iterator getChildrenNames() {
139 return _valueLists.keySet().iterator();
140 }
141
142
145 public Iterator getChildren() {
146 return super.getChildren();
147 }
148
149
158 protected Object onSelect(List values) {
159 if (values.size() > 0) {
160 Object toReturn = values.remove(0);
161 values.add(toReturn);
162
163 return toReturn;
164 }
165
166 return null;
167 }
168
169
179 protected Object onRead(NamePart np, Object selected){
180 return selected;
181 }
182
183
192 protected Object onWrite(NamePart np, Object toBind){
193 return toBind;
194 }
195
196 static class ValueIterator implements Iterator {
197 Iterator _lists;
198 Iterator _current;
199
200 ValueIterator(Iterator lists) {
201 _lists = lists;
202 }
203
204 public boolean hasNext() {
205 if (_current != null) {
206 if (_current.hasNext()) {
207 return true;
208 } else if (_lists.hasNext()) {
209 _current = ((List ) _lists.next()).iterator();
210
211 return _current.hasNext();
212 } else {
213 return false;
214 }
215 } else if (_lists.hasNext()) {
216 _current = ((List ) _lists.next()).iterator();
217
218 return hasNext();
219 }
220
221 return false;
222 }
223
224 public Object next() {
225 if (_current == null) {
226 if (hasNext()) {
227 return _current.next();
228 }
229 }
230
231 return _current.next();
232 }
233
234 public void remove() {
235 }
236 }
237 }
238 |
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