I have massive deja vu about this but I can't quite put my finger on what was wrong when I noticed similar behavior. I believe it came down to user error.
Be sure to check your matchers...it's subtly easy to get those wrong. Also, there are some criteria that your class and method must meet to be intercepted, as outlined here: http://google-guice.googlecode.com/svn/trunk/javadoc/com/google/inject/Binder.html#bindInterceptor(com.google.inject.matcher.Matcher<? super java.lang.Class<?>>, com.google.inject.matcher.Matcher<? super java.lang.reflect.Method>, org.aopalliance.intercept.MethodInterceptor...) -Fred On Wed, Nov 3, 2010 at 4:05 PM, Jesse Greenwald <[email protected]>wrote: > Hi, > > I'm seeing some strange behavior. I have a MethodInterceptor that I > use to collect timing information on method calls. It works great, > except it doesn't seem work consistently. Without changing any code, > it will work on some runs and not on others. > > More specifically, I have two classes (say Foo & Bar) that extend from > a base class (say Base). Sometimes the method interceptor will work > on one, but usually not both. I ran it using a debugger and noticed > that the backtraces are significantly different between when it works > and when it doesn't. It seems that maybe something is going wrong > with code generation for the wrapper class? > > Below are some simplified examples of my classes, interceptor code, > and the backtraces I'm seeing. > > Any help is appreciated. > > Thanks, > Jesse > > > =====Foo ===== > class Foo extends Base { > public Foo() { > super() > } > } > > ===== Bar ===== > class Bar extends Base { > public Bar() { > super() > } > } > > ===== Base ===== > class Base { > > public Base() { > new Thread(this).start(); > } > > public void run() { > doWork() > } > > @TimeLogged > protected void doWork() { > } > > } > > ===== Injection Code ===== > bindInterceptor(Matchers.subclassesOf(Base.class), > Matchers.annotatedWith(TimeLogged.class), > new TimeLoggerIntercepter()); > > ===== Broken Backtrace ===== > Foo$$EnhancerByGuice$$4b1ef8b7(Base<T,V>).doWork(HashMap<File,V>) > line: 283 > Foo$$EnhancerByGuice$$4b1ef8b7.doWork(HashMap) line: not available > Foo$$EnhancerByGuice$$4b1ef8b7(Base<T,V>).run() line: 188 > Foo$$EnhancerByGuice$$4b1ef8b7.run() line: not available > Base$1.run() line: 48 > Thread.run() line: 619 > > ===== Working Backtrace ===== > Bar$$EnhancerByGuice$$78113831(Base<T,V>).doWork(HashMap<File,V>) > line: 283 > Bar$$EnhancerByGuice$$78113831.CGLIB$doWork$20(HashMap) line: not > available > Bar$$EnhancerByGuice$$78113831$$FastClassByGuice$$ae4cd253.invoke(int, > Object, Object[]) line: not available > MethodProxy.invokeSuper(Object, Object[]) line: 228 > InterceptorStackCallback$InterceptedMethodInvocation.proceed() line: > 64 > TimeLoggerIntercepter.invoke(MethodInvocation) line: 32 > InterceptorStackCallback$InterceptedMethodInvocation.proceed() line: > 64 > InterceptorStackCallback.intercept(Object, Method, Object[], > MethodProxy) line: 44 > Bar$$EnhancerByGuice$$78113831.doWork(HashMap) line: not available > Bar$$EnhancerByGuice$$78113831(Base<T,V>).run() line: 188 > Bar$$EnhancerByGuice$$78113831.CGLIB$run$8() line: not available > Bar$$EnhancerByGuice$$78113831$$FastClassByGuice$$ae4cd253.invoke(int, > Object, Object[]) line: not available > MethodProxy.invokeSuper(Object, Object[]) line: 228 > ProxyFactory$1.intercept(Object, Method, Object[], MethodProxy) line: > 53 > Bar$$EnhancerByGuice$$78113831.run() line: not available > Base$1.run() line: 48 > Thread.run() line: 619 > > -- > You received this message because you are subscribed to the Google Groups > "google-guice" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<google-guice%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/google-guice?hl=en. > > -- You received this message because you are subscribed to the Google Groups "google-guice" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-guice?hl=en.
