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1
21 package com.db4o.test;
22
23 import java.util.*;
24
25 import com.db4o.query.*;
26
27
28
31 public class NestedLists {
32
33 static final int DEPTH = 10;
34
35 List list;
36 String  name;
37
38 public void storeOne() {
39 nest(DEPTH);
40 name = "root";
41 }
42
43 private void nest(int depth) {
44 if(depth > 0) {
45 list = Test.objectContainer().collections().newLinkedList();
46 NestedLists nl = new NestedLists();
47 nl.name = "nested";
48 nl.nest(depth - 1);
49 list.add(nl);
50 }
51 }
52
53
54
55 public void test() {
56 Query q = Test.query();
57 q.constrain(NestedLists.class);
58 q.descend("name").constrain("root");
59 NestedLists nl = (NestedLists)q.execute().next();
60 for (int i = 0; i < DEPTH - 1; i++) {
61 nl = nl.checkNest();
62 }
63 }
64
65 private NestedLists checkNest() {
66 Test.ensure(list != null);
67 NestedLists nl = (NestedLists)list.get(0);
68 Test.ensure(nl.name.equals("nested"));
69 return nl;
70 }
71
72 public String toString() {
73 String str = "NestedList ";
74 if(name != null) {
75 str += name;
76 }
77 if(list != null) {
78 str += " list valid";
79 }else {
80 str += " list INVALID";
81 }
82 return str;
83 }
84
85
86 }
87 |
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