aspectj

问题 I am using Equinox, so the Equinox Aspect project seems like a no-brainer, but that project appears to be inactive and has only one page of documentation that leaves me hanging at the end. Other than that project, I do not see many options for using AOP in OSGI. Let me know what you all think and what the possibilities are, thanks :) 回答1: I don't know of any alternative, but I didn't think Equinox Aspects was inactive. It's even receiving new features in the upcoming Helios release. 回答2: The

问题 I have a situation as follows: I have a LoggingAspect with several pointcuts matching specific method executions in my main application. The corresponding advice bodies basically all look similar, causing a lot of code duplication: void around() : download() { String message = "Downloading, verifying (MD5) and unpacking"; SimpleLogger.verbose(message, IndentMode.INDENT_AFTER); proceed(); SimpleLogger.verbose(message + " - done", IndentMode.DEDENT_BEFORE); } There is some variation, though.

问题 I tried to test the performance of AOP on Spring framework 4.1.6 and AOP methods were clean, jdk dynamic proxy and aspectJ. I made one to five simple advices to them and checked elapsed time for each. result: jdk dynamic proxy: aspect1: 2.499 sec. aspect2: 2.574 aspect3: 2.466 aspect4: 2.436 aspect5: 2.563 aspectJ (ctw): aspect1: 2.648 aspect2: 2.562 aspect3: 2.635 aspect4: 2.520 aspect5: 2.574 clean (no aspect): aspect1: 2.699 aspect2: 2.513 aspect3: 2.527 aspect4: 2.458 aspect5: 2.402

问题 I try to hijack/intercept a method of a class in EclipseLink. I had tried Spring AOP and AspectJ and I failed. I want to do something when class org.eclipse.persistence.internal.localization.i18n.TraceLocalizationResource throw exception while calling method getString(..); My implementation as below: @AfterThrowing(pointcut = "execution(* org.eclipse.persistence.internal.localization.i18n.TraceLocalizationResource.getString(..))",throwing="error") public void logAfterThrowing(JoinPoint

问题 I banged my head for two days to integrate aspectj with maven, But did not work. I am writing a simple program with two advices (which works fine in eclipse, so I am sure it's not a code side error). I have recently started using maven for project building. Can't think of why I am not able to kick off aspectj compiler. During compilation through maven - I get only class file for java without weaving. .aj file is not compiled. Please Help!!!! the first aspect file - ExceptionAspects.aj package

问题 Is it possible to capture any field with a specific annotation? My end goal is to inject a value into that field, but currently my pointcut is wrong (not sure of the correct syntax). @Pointcut("execution(* *(..)) && @annotation(com.mycompany.MyAnnotation)") private void annotatedField(){} @Around("annotatedField()") public Object injectValue(final ProceedingJoinPoint proceedingJoinPoint) throws Throwable {} I believe the pointcut is stating any Method with the annotation. and I want to change

问题 Can I implement Strategy Pattern using AOP. I would like to either 1. Override the default algorithm 2. Or Would like to dynamically select any of the given algorithm. Thanks, 回答1: Look at "AspectJ Cookbook" by Russell Miles. It provides implementation of almost all classical design patterns from the point of AspectJ's view. Here is direct link to strategy pattern http://books.google.com/books?id=AKuBlJGl7iUC&lpg=PP1&pg=PA230#v=onepage&q&f=true. 来源： https://stackoverflow.com/questions/7244165

问题 Is there any way to specify -javaagent argument when starting an APK on Android? I'd like to specify aspectj's aspectjweaver.jar to java vm argument for a loading time instrumentation. Thanks a lot. 回答1: No. The Dalvik VM running application code in Android is not a JVM. Android does, however support instrumentation through Instrumentation classes. You may be able to find a port of aspectj for Android that already supports this, though you may also need to write it yourself. Don't forget to

问题 I configured everything like they say here. And it still won't run. It just gives me an LogManager exception. Does anyone successfully run AspectJ there? 回答1: Here is a possible workaround/solution (from http://wiki.eclipse.org/LTWJboss7): The IllegalStateException is thrown by jBoss7 because there is a bug that limits access to java.util.logging: https://issues.jboss.org/browse/AS7-1 - There a partial solution to avoid this problem is suggested, regarding changing the way the loadmanager is

问题 I have a general AOP question, please clarify me on this situation, let's assume we have an execution pointcut that catches a method execution : In our aspect we have a : pointcut pointcut_CatchMethod(Activity activity) : execution(String methodA(..)) && target(activity); Here, we have a methodA() in target activity. and we have 2 advices before and around. Like : before(Activity activity) : pointcut_CatchMethod(activity){ //Do something... } String around(Activity activity) : pointcut