CODEWITHSUNDEEP
javaspringproxyaspectj
blow
blow

Reputation: 13209

spring and aspectj, intercept method of a non-proxy object

i want to intercept method from a non-proxied object.

I have a class instance MyClass myClassInstance=new MyClass() and i want to intercept call of myClassInstance methods.

I know all works good with proxies, but i need aspect on non proxied.

Is this possible?

Thanks.

Upvotes: 3

Views: 2726

Answers (3)

Dave
Dave

Reputation: 898

You can enable load time weaving in Spring. Then the class loader will weave whatever aspects you define into your classes when they are loaded - regardless of whether they are being created by Spring.

You'll need to enable LTW by adding this line to your context file:

See: http://static.springsource.org/spring/docs/3.0.0.M4/spring-framework-reference/html/ch07s08.html#aop-aj-ltw

Upvotes: 0

Bozho
Bozho

Reputation: 597314

It is possible, but it is not desirable.

You can use @Configurable and AspectJ will intercept calls. Read the 7.8.1 Using AspectJ to dependency inject domain objects with Spring section of the docs about it.

In short - AspectJ plugs some "magic" either compile-time or load-time (with a respective weaver), which modifies the classes so that they become part of the spring context.

As of why I think it is undesirable - this is dark magic that happens by modifying the classes' structure. It's not an object-oriented approach, and I think it will be hard to support. Imagine 6 months later a colleague of yours is debugging a nasty issue. It could take days before he realizes this magic is happening. This opinion is subjection though. The functionality is there and if you need it - use it.

Upvotes: 5

Michael Lloyd Lee mlk
Michael Lloyd Lee mlk

Reputation: 14661

Using Spring, I do not believe so (I appear to be wrong), using AspectJ I believe you can as long as you compile all the code with the AspectJ compiler. However I have never tried it.

Upvotes: 1

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