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1 package com.tirsen.nanning.config;
2
3 import com.tirsen.nanning.AspectException;
4 import com.tirsen.nanning.AspectInstance;
5 import com.tirsen.nanning.MixinInstance;
6
7 public class Introductor extends AbstractAspect {
8 protected Class  interfaceClass;
9 protected Class targetClass;
10
11 public Introductor(Class interfaceClass, Class targetClass) {
12 this.interfaceClass = interfaceClass;
13 this.targetClass = targetClass;
14 }
15
16 public void introduce(AspectInstance aspectInstance) {
17 if (shouldIntroduce(aspectInstance)) {
18 MixinInstance mixinInstance = new MixinInstance();
19 mixinInstance.setInterfaceClass(interfaceClass);
20 if (targetClass != null) {
21 try {
22 mixinInstance.setTarget(targetClass.newInstance());
23 } catch (Exception e) {
24 throw new AspectException("could not instantiate target " + e);
25 }
26 }
27 aspectInstance.addMixin(mixinInstance);
28 }
29 }
30
31 public boolean shouldIntroduce(AspectInstance aspectInstance) {
32 return true;
33 }
34
35 public Class getInterfaceClass() {
36 return interfaceClass;
37 }
38
39 public Class getTargetClass() {
40 return targetClass;
41 }
42 }
43 |
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