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1 package com.teamkonzept.lib;
2
3 import java.util.*;
4 import org.apache.log4j.Category;
5
6 public abstract class TKIteratorPlugin
7 {
8 private static final Category CATEGORY = Category.getInstance(TKIteratorPlugin.class);
9
10 private TKVector list;
11 private int index;
12 private boolean doSort;
13 private Object  prevItem;
14 private boolean first;
15 private boolean initialized;
16
17 public String name;
18
19
22 public TKIteratorPlugin (TKHashtable hash, String name,
23 boolean doSort, boolean sortedForward) {
24 if ( hash != null ){
25 this.list = new TKVector (hash.keySet());
26 }
27 else{
28 this.list = new TKVector ();
29 }
30 this.index = 0;
31 this.first = true;
32 this.name = name;
33 this.doSort = doSort;
34 this.prevItem = null;
35 this.initialized = true;
36
37 if ( doSort ){
38 if ( sortedForward ){
39 this.list = this.list.sort();
40 }
41 else{
42 this.list = this.list.rsort();
43 }
44 }
45 init();
46 }
47
48
49 public TKIteratorPlugin (Enumeration list, String name,
50 boolean doSort, boolean sortedForward) {
51 this.list = new TKVector ();
52 if ( list != null ){
53 while ( list.hasMoreElements() ){
54 this.list.addElement(list.nextElement());
55 }
56 }
57 this.index = 0;
58 this.first = true;
59 this.name = name;
60 this.doSort = doSort;
61 this.prevItem = null;
62 this.initialized = true;
63
64 if ( doSort ){
65 if ( sortedForward ){
66 this.list = this.list.sort();
67 }
68 else{
69 this.list = this.list.rsort();
70 }
71 }
72 init();
73 }
74
75 public TKIteratorPlugin (Enumeration list, String name, boolean doSort) {
76 this (list,name,doSort,true);
77 }
78
79 public TKIteratorPlugin (Enumeration list, String name, boolean doSort, Object oneMore) {
80
81 this.list = new TKVector ();
82
83 if (oneMore != null) this.list.addElement(oneMore);
84
85 while ((list != null) && list.hasMoreElements())
86 this.list.addElement(list.nextElement());
87
88 this.index = 0;
89 this.first = true;
90 this.name = name;
91 this.doSort = doSort;
92 this.initialized = true;
93
94 if (doSort && (this.list != null)) this.list = this.list.sort();
95
96 init();
97 }
98
99 public TKIteratorPlugin (TKVector list, String name, boolean doSort) {
100
101 this.list = list;
102 this.index = 0;
103 this.first = true;
104 this.name = name;
105 this.doSort = doSort;
106 this.initialized = true;
107
108 if (doSort && (this.list != null)) this.list = this.list.sort();
109
110 init();
111 }
112
113 public TKIteratorPlugin (TKVector list, String name, boolean doSort, Object oneMore) {
114
115 if (oneMore == null) this.list = list;
116 else {
117 this.list = new TKVector();
118 this.list.addElement(oneMore);
119 this.list.concat(list);
120 }
121
122 this.index = 0;
123 this.first = true;
124 this.name = name;
125 this.doSort = doSort;
126 this.initialized = true;
127
128 if (doSort && (this.list != null)) this.list = this.list.sort();
129
130 init();
131 }
132
133 public TKIteratorPlugin (TKHashtable list, String name, boolean doSort) {
134
135 Enumeration e = list == null ? null : list.keys();
136
137 TKVector tmp = new TKVector ();
138 while ((e != null) && e.hasMoreElements())
139 tmp.addElement(e.nextElement());
140
141 tmp = doSort ? tmp.sort() : tmp;
142
143 this.list = new TKVector();
144 e = tmp.elements();
145 while (e.hasMoreElements())
146 this.list.addElement(list.get(e.nextElement()));
147
148 this.index = 0;
149 this.first = true;
150 this.name = name;
151 this.doSort = doSort;
152 this.initialized = true;
153
154 init();
155 }
156
157 public TKIteratorPlugin (TKHashtable list, String name, boolean doSort, Object oneMore) {
158
159 TKVector tmp = new TKVector ();
160
161 Enumeration e = list == null ? null : list.keys();
162 while ((e != null) && e.hasMoreElements())
163 tmp.addElement(e.nextElement());
164
165 tmp = doSort ? tmp.sort() : tmp;
166
167 this.list = new TKVector();
168 if (oneMore != null) this.list.addElement(oneMore);
169
170 e = tmp.elements();
171 while (e.hasMoreElements())
172 this.list.addElement(list.get(e.nextElement()));
173
174 this.index = 0;
175 this.first = true;
176 this.name = name;
177 this.doSort = doSort;
178 this.initialized = true;
179
180 init();
181 }
182
183 public void init () {}
184
185 public abstract boolean applyThis (Object item, TKTemplate template, String path);
186
187 public void applyAfter (Object item, TKTemplate template, String path) {}
189
190 public boolean applyChilds (TKTemplate template, int i, String currListName, String path) { return false; }
191
192 public boolean apply (TKTemplate template, String currListName, String path) {
193
194 return apply (template, -1, currListName, path);
195 }
196
197 public boolean apply (TKTemplate template, int i, String currListName, String path)
198 {
199 path = path == null || path.length() == 0 ? name : path+'.'+name;
200 if (!currListName.equalsIgnoreCase(name)) return applyChilds (template,i,currListName,path);
201
202 template.setEnumerationContext( name, new Integer (i) );
204 if (i >= 0 && index != i)
205 {
206 index = i;
207 if (index == 0)
208 {
209 first = true;
210 prevItem = null;
211 if (!initialized) init();
212 initialized = true;
213 }
214 }
215
216 while ((list != null) && (index < list.size()))
217 {
218 try {
219 Object item = list.get(index++);
220 if (item == null) continue;
221
222 initialized = false;
223 if (prevItem != null) applyAfter (prevItem,template,path);
224
225 if (this.first) template.set(path+".FIRST_INDEX",new Boolean (true));
226 this.first = false;
227
228 if (applyThis (item,template,path)) {
229
230 prevItem = item;
231 return true;
232
233 } else prevItem = null;
234
235 } catch ( Throwable th )
236 {
237 CATEGORY.error("apply", th);
238 throw new Error ( th.getMessage() );
239 }
240 }
241
242 if (prevItem != null) applyAfter (prevItem,template,path);
243
244 index = 0;
245 first = true;
246 prevItem = null;
247 if (!initialized) init();
248 initialized = true;
249
250 return false;
251 }
252 }
253 |
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