The main distro/cvs/etc has moved to java.net. Right now ongoing work on this library has mostly stopped in favor of work on DynAOP.
It provides all the spiffies I want, and that others seem to want in very few classes. Its very optimized for wrapping objects and executing invocation stacks (ie, intercepted method calls) rather than for adding new interceptors. Making a typical call to an intercepted method doesn't involve any reflection (it uses cglib). The first time an instance of a given class is wrapped it is slow (bytecode generation) and when a new interceptor is added it is slow (needs to traverse its cache and figure out what it applies to) but the common stuff is fast and that's what counts =)
Using it is pretty easy, and works like:
InterceptionBroker broker = new InterceptionBroker();
broker.addInterceptor(new LoggingInterceptor(), new Signature()
{
public boolean match(Method m)
{
// Match every method call on every object
return true;
}
});
Map example = new HashMap();
Map same = broker.wrap(example);
// same is the interception wrapped version of example
example.put("foo", "bar"); // Will not be intercepted
same.get("foo"); // Will be intercepted and logged
In addition to providing the basic interception broker, base implementations for several (eventually most) of the common uses for interception are implemented in the library. This includes managed transactions, actor-based security constraints, logging, etc.
Source Tarball -- Binary Tarball
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