Re: How to get the signature of the method you are in?

From:
"Daniel Pitts" <googlegroupie@coloraura.com>
Newsgroups:
comp.lang.java.programmer
Date:
29 Mar 2007 08:10:38 -0700
Message-ID:
<1175181038.587474.253700@n59g2000hsh.googlegroups.com>
On Mar 29, 2:56 am, "Lethal Possum" <lethal.pos...@gmail.com> wrote:

Hello everyone,

I use the following code to do some benchmarking of my application:

public void go(String arg) {
   if (TRACE) {
      long start = System.currentTimeMillis();
      try {
         _impl.go(arg);
      } finally {
         long stop = System.currentTimeMillis();
         Log.trace(_impl.getClass(), "go(String arg)", stop - start);
      }
   } else {
      _impl.go(arg);
   }

}

I was wondering what would be the most efficient way to generate the
"go(String arg)" message automatically. A solution would be to do
something like:

Throwable t = new Throwable();
StackTraceElement s = t.getStackTrace()[0];
String message = s.getMethodName();

But this strikes me as neither very elegant or efficient. And it
doesn't include the full method signature, only the method name. Maybe
someone have a better idea?

Thanks in advance for your suggestions,

Thomas


You can also look into creating a tracing Proxy class

look for java.lang.reflect.Proxy

It basically allows you to trap method calls. If TRACE doesn't
change, you could even make a factory the returns the _impl object if !
TRACE, and return the proxy if TRACE. That provides even better
performance.

Beyond that, you might even look into AspectJ or other Aspect Oriented
Programming (AOP) frameworks.

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