|
1
10
11 package com.triactive.jdo.test;
12
13 import java.util.ArrayList  ;
14 import java.util.Collection ;
15 import java.util.HashSet ;
16 import java.util.Iterator ;
17 import java.util.LinkedList ;
18 import java.util.Vector ;
19 import javax.jdo.InstanceCallbacks;
20 import javax.jdo.JDOHelper;
21 import javax.jdo.PersistenceManager;
22 import junit.framework.Assert;
23
24
25 public class CollectionWidget extends Widget implements HasSCOFields, InstanceCallbacks
26 {
27 private Collection normalCollection;
28 private Collection normalObjectCollection;
29 private int numWidgets;
30
31
32 public CollectionWidget()
33 {
34 normalCollection = newCollection();
35 normalObjectCollection = newCollection();
36 numWidgets = 0;
37 }
38
39
40 private Collection newCollection()
41 {
42 switch (r.nextInt(4))
43 {
44 case 0:
45 default:
46 return new HashSet ();
47 case 1:
48 return new ArrayList ();
49 case 2:
50 return new LinkedList ();
51 case 3:
52 return new Vector ();
53 }
54 }
55
56
57 public int getNumWidgets()
58 {
59 return numWidgets;
60 }
61
62
63 public Object [] getSCOFieldValues()
64 {
65 return new Object [] { normalCollection, normalObjectCollection };
66 }
67
68
69 public Object clone()
70 {
71 CollectionWidget sw = (CollectionWidget)super.clone();
72
73 HashSet ns = new HashSet ();
74 HashSet nos = new HashSet ();
75
76 Iterator i = normalCollection.iterator();
77
78 while (i.hasNext())
79 {
80 Widget w = (Widget)((Widget)i.next()).clone();
81
82 ns.add(w);
83 nos.add(w);
84 }
85
86 sw.normalCollection = ns;
87 sw.normalObjectCollection = nos;
88
89 return sw;
90 }
91
92
93
96
97 public void fillRandom()
98 {
99 fillRandom(r.nextInt(5));
100 }
101
102
103 public void fillRandom(int numWidgets)
104 {
105 fillRandom(numWidgets, false);
106 }
107
108
109
113
114 public void fillRandom(int numWidgets, boolean includeCollectionWidgets)
115 {
116 super.fillRandom();
117
118
121 Iterator i = normalCollection.iterator();
122
123 while (i.hasNext())
124 {
125 Object obj = i.next();
126 i.remove();
127
128 Assert.assertTrue("normalCollection.contains() did not return false after removing existing object", !normalCollection.contains(obj));
129 Assert.assertTrue("normalObjectCollection.remove() did not return true after removing existing object", normalObjectCollection.remove(obj));
130 Assert.assertTrue("normalObjectCollection.remove() did not return false attempting to remove non-existent object", !normalObjectCollection.remove(obj));
131
132 if (JDOHelper.isPersistent(this))
133 JDOHelper.getPersistenceManager(this).deletePersistent(obj);
134 }
135
136 Assert.assertTrue("normalCollection should have been empty", normalCollection.isEmpty());
137 Assert.assertTrue("normalObjectCollection should have been empty", normalObjectCollection.isEmpty());
138
139
143 this.numWidgets = numWidgets;
144
145 while (numWidgets-- > 0)
146 {
147 Widget obj;
148
149 switch (r.nextInt(includeCollectionWidgets ? 6 : 5))
150 {
151 case 0:
152 default:
153 obj = new Widget();
154 obj.fillRandom();
155 normalCollection.add(obj);
156 normalObjectCollection.add(obj);
157 break;
158
159 case 1:
160 obj = new DateWidget();
161 obj.fillRandom();
162 normalCollection.add(obj);
163 normalObjectCollection.add(obj);
164 break;
165
166 case 2:
167 obj = new StringWidget();
168 obj.fillRandom();
169 normalCollection.add(obj);
170 normalObjectCollection.add(obj);
171 break;
172
173 case 3:
174 obj = new BinaryWidget();
175 obj.fillRandom();
176 normalCollection.add(obj);
177 normalObjectCollection.add(obj);
178 break;
179
180 case 4:
181 obj = new FloatWidget();
182 obj.fillRandom();
183 normalCollection.add(obj);
184 normalObjectCollection.add(obj);
185 break;
186
187 case 5:
188 obj = new CollectionWidget();
189 obj.fillRandom();
190 normalCollection.add(obj);
191 normalObjectCollection.add(obj);
192 break;
193 }
194 }
195
196 validate();
197 }
198
199
200 private void validate()
201 {
202 Assert.assertEquals("numWidgets != normalCollection.size(): " + this, numWidgets, normalCollection.size());
203 Assert.assertEquals("numWidgets != normalObjectCollection.size(): " + this, numWidgets, normalObjectCollection.size());
204 }
205
206
207
218
219 public boolean compareTo(Object obj)
220 {
221 validate();
222
223 if (obj == this)
224 return true;
225
226 if (!(obj instanceof CollectionWidget) || !super.compareTo(obj))
227 return false;
228
229 CollectionWidget w = (CollectionWidget)obj;
230
231 w.validate();
232
233 return compareCollection(normalCollection, w.normalCollection) &&
234 compareCollection(normalObjectCollection, w.normalObjectCollection);
235 }
236
237
238
244
245 public String toString()
246 {
247 StringBuffer s = new StringBuffer (super.toString());
248
249 s.append(" normalCollection = ").append(normalCollection);
250 s.append('\n');
251 s.append(" normalObjectCollection = ").append(normalObjectCollection);
252 s.append('\n');
253 s.append(" numWidgets = ").append(numWidgets);
254 s.append('\n');
255
256 return s.toString();
257 }
258
259
260 public void jdoPostLoad() {}
261 public void jdoPreClear() {}
262 public void jdoPreStore() {}
263
264
265 public void jdoPreDelete()
266 {
267 PersistenceManager myPM = JDOHelper.getPersistenceManager(this);
268 Object [] elements = normalCollection.toArray();
269
270 normalCollection.clear();
271 normalObjectCollection.clear();
272
273 myPM.deletePersistentAll(elements);
274 }
275 }
276 |
Popular Tags |
Java API By Example, From Geeks To Geeks.