CODEWITHSUNDEEP
byte-buddy
hao117
hao117

Reputation: 3

[byte-buddy]Why only last interceptor works

There is a method testFooin my code which looks like this: 

newClassBuilder = newClassBuilder.method(ElementMatchers.nameStartsWith("test"))
                                .intercept(MethodDelegation.to(new InstMethodsInter(new MethodInterceptor1())));
newClassBuilder = newClassBuilder.method(ElementMatchers.named("testFoo"))
                                .intercept(MethodDelegation.to(new InstMethodsInter(new MethodInterceptor2())));
newClassBuilder = newClassBuilder.method(ElementMatchers.nameEndsWith("Foo"))
                               .intercept(MethodDelegation.to(new InstMethodsInter(new MethodInterceptor3())));

only MethodInterceptor3 works.
I have lots of interceptors. What do I need to do?

Upvotes: 0

Views: 39

Answers (1)

Rafael Winterhalter
Rafael Winterhalter

Reputation: 44032

You have to add a most-specific matcher yourself and specify the interceptors yourself there:

newClassBuilder.method(ElementMatchers.nameStartsWith("test").and(ElementMatchers.named("testFoo"))
                            .intercept(MethodDelegation.to(new InstMethodsInter(new MethodInterceptor1()).andThen(MethodDelegation.to(InstMethodsInter(new MethodInterceptor2()))));

This is necessary as the later matcher override any previous matcher that also matches a method. The most specific matcher needs to be applied last and interceptors are not stacked.

However, it seems like you should refactor your interception logic here to make this unnecessary.

Upvotes: 0

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