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1
21 package com.db4o.db4ounit.common.querying;
22
23 import com.db4o.*;
24 import com.db4o.config.*;
25 import com.db4o.query.*;
26
27 import db4ounit.*;
28 import db4ounit.extensions.*;
29
30 public class CascadeDeleteDeleted extends AbstractDb4oTestCase {
31
32 public static class CddMember {
33 public String  name;
34 }
35
36 public String name;
37
38 public Object untypedMember;
39
40 public CddMember typedMember;
41
42 public CascadeDeleteDeleted() {
43 }
44
45 public CascadeDeleteDeleted(String name) {
46 this.name = name;
47 }
48
49 protected void configure(Configuration config) {
50 config.objectClass(this).cascadeOnDelete(true);
51 }
52
53 protected void store() {
54 membersFirst("membersFirst commit");
55 membersFirst("membersFirst");
56
57 twoRef("twoRef");
58 twoRef("twoRef commit");
59 twoRef("twoRef delete");
60 twoRef("twoRef delete commit");
61 }
62
63 private void membersFirst(String name) {
64 CascadeDeleteDeleted cdd = new CascadeDeleteDeleted(name);
65 cdd.untypedMember = new CddMember();
66 cdd.typedMember = new CddMember();
67 db().set(cdd);
68 }
69
70 private void twoRef(String name) {
71 CascadeDeleteDeleted cdd = new CascadeDeleteDeleted(name);
72 cdd.untypedMember = new CddMember();
73 cdd.typedMember = new CddMember();
74 CascadeDeleteDeleted cdd2 = new CascadeDeleteDeleted(name);
75 cdd2.untypedMember = cdd.untypedMember;
76 cdd2.typedMember = cdd.typedMember;
77 db().set(cdd);
78 db().set(cdd2);
79
80 }
81
82 public void test() {
83 tMembersFirst("membersFirst commit");
84 tMembersFirst("membersFirst");
85 tTwoRef("twoRef");
86 tTwoRef("twoRef commit");
87 tTwoRef("twoRef delete");
88 tTwoRef("twoRef delete commit");
89 Assert.areEqual(0, countOccurences(CddMember.class));
90 }
91
92 private void tMembersFirst(String name) {
93 boolean commit = name.indexOf("commit") > 1;
94
95 Query q = newQuery(this.getClass());
96 q.descend("name").constrain(name);
97 ObjectSet objectSet = q.execute();
98 CascadeDeleteDeleted cdd = (CascadeDeleteDeleted) objectSet.next();
99 db().delete(cdd.untypedMember);
100 db().delete(cdd.typedMember);
101 if (commit) {
102 db().commit();
103 }
104 db().delete(cdd);
105 if (!commit) {
106 db().commit();
107 }
108 }
109
110 private void tTwoRef(String name) {
111 boolean commit = name.indexOf("commit") > 1;
112 boolean delete = name.indexOf("delete") > 1;
113 Query q = newQuery(this.getClass());
114 q.descend("name").constrain(name);
115 ObjectSet objectSet = q.execute();
116 CascadeDeleteDeleted cdd = (CascadeDeleteDeleted) objectSet.next();
117 CascadeDeleteDeleted cdd2 = (CascadeDeleteDeleted) objectSet.next();
118 if (delete) {
119 db().delete(cdd.untypedMember);
120 db().delete(cdd.typedMember);
121 }
122 db().delete(cdd);
123 if (commit) {
124 db().commit();
125 }
126 db().delete(cdd2);
127 if (!commit) {
128 db().commit();
129 }
130 }
131 }
132 |
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