1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
|
import org.aspectj.testing.Tester;
/**
* test time of creation and existence of aspect of eachobject(P)
* where P is not instanceof
*/
public class Tricky1 {
public static void main(String[] args) {
// the ReceptionAspect isn't created until just before the m message is received
C c = new C();
c.foo();
c.m();
Tester.checkEqual(c.history.toString(), "C.foo, SubReceptionAspect1.before, C.m, ");
Tester.check(!SubReceptionAspect2.hasAspect(c), "!Sub2.hasAspect");
// if m1 is called first, then a single SubReceptionAspect is created instead
// no matter how many times m1 is called
c = new C();
c.m1();
c.m1();
Tester.checkEqual(c.history.toString(),
"SubReceptionAspect2.before, C.m1, SubReceptionAspect2.before, C.m1, ");
Tester.check(!SubReceptionAspect1.hasAspect(c), "!Sub1.hasAspect");
// calling both m and m1 should prduce one of each aspect
c = new C();
c.m();
c.m1();
Tester.check(SubReceptionAspect1.hasAspect(c), "Sub1.hasAspect");
Tester.check(SubReceptionAspect2.hasAspect(c), "Sub2.hasAspect");
// be sure nothing unexpected happens on subtypes
c = new SubC();
c.foo();
c.m();
Tester.checkEqual(c.history.toString(), "C.foo, SubReceptionAspect1.before, SubC.m, ");
}
}
class C {
// records what methods are called and advice are run
public StringBuffer history = new StringBuffer();
public void m() {
history.append("C.m, ");
}
public void m1() {
history.append("C.m1, ");
}
public void foo() {
history.append("C.foo, ");
}
}
class SubC extends C {
public void m() {
history.append("SubC.m, ");
}
}
abstract aspect ReceptionAspect perthis(targets()) {
abstract pointcut targets();
protected void noteBefore(C c) {
c.history.append("ReceptionAspect.before, ");
}
before (C c): target(c) && execution(* *(..)) {
noteBefore(c);
}
}
aspect SubReceptionAspect1 extends ReceptionAspect {
pointcut targets(): execution(void m());
protected void noteBefore(C c) {
c.history.append("SubReceptionAspect1.before, ");
}
}
aspect SubReceptionAspect2 extends ReceptionAspect {
pointcut targets(): execution(void m1());
protected void noteBefore(C c) {
c.history.append("SubReceptionAspect2.before, ");
}
}
|
