[ https://issues.jboss.org/browse/SEAMCATCH-4?page=com.atlassian.jira.plugi... ] Jason Porter edited comment on SEAMCATCH-4 at 2/19/11 2:27 PM: --------------------------------------------------------------- Here are some examples. 1. Drop all frames in NoDefClassFoundError {code:java} public class NoClassFoundStackFrameFilter implements ExceptionStackFrameFilter<NoClassDefFoundError> { @Override public StackFrameFilterResult process(StackFrame frame) { return StackFrameFilterResult.BREAK; } } {code} 2. Truncate frames after a threshold (though no indication we did that we did) {code:java} public class TruncateExceptionStackFilter implements ExceptionStackFrameFilter<Throwable> { @Override public StackFrameFilterResult process(StackFrame frame) { if (frame.getIterationStatus().getIndex() >= 20) { return StackFrameFilterResult.DROP_REMAINING; } return StackFrameFilterResult.INCLUDE; } } {code} 3. Remove noise in between fire event and invoke observer {code:java} public class InvokeObserverStackFrameFilter implements ExceptionStackFrameFilter<Throwable> { @Override public StackFrameFilterResult process(StackFrame frame) { StackTraceElement el = frame.getStackTraceElement(); if (frame.isMarkSet("event.firing")) { if (isReflectionInvoke(el)) { frame.clearMark("event.firing"); return StackFrameFilterResult.DROP; } else { return StackFrameFilterResult.DROP; } } else if (el.getClassName().contains(".BeanManager") && el.getMethodName().equals("fireEvent")) { frame.mark("event.firing"); return StackFrameFilterResult.INCLUDE; } return StackFrameFilterResult.INCLUDE; } private boolean isReflectionInvoke(StackTraceElement candidate) { return candidate.getClassName().equals(Method.class.getName()) && candidate.getMethodName().equals("invoke"); } } {code} 4. Flatten reflections invoke into a single line {code:java} public class ReflectionInvokeStackFrameFilter implements ExceptionStackFrameFilter<Throwable> { @Override public StackFrameFilterResult process(StackFrame frame) { if (frame.isMarkSet("reflections.invoke")) { if (frame.getStackTraceElement().getMethodName().startsWith("invoke") || frame.getStackTraceElement().getClassName().contains("_WeldClientProxy")) { return StackFrameFilterResult.DROP; } else { frame.clearMark("reflections.invoke"); } } return StackFrameFilterResult.INCLUDE; } } {code} was (Author: dan.j.allen): Here are some examples. 1. Drop all frames in NoDefClassFoundError public class NoClassFoundStackFrameFilter implements ExceptionStackFrameFilter<NoClassDefFoundError> { @Override public StackFrameFilterResult process(StackFrame frame) { return StackFrameFilterResult.BREAK; } } 2. Truncate frames after a threshold (though no indication we did that we did) public class TruncateExceptionStackFilter implements ExceptionStackFrameFilter<Throwable> { @Override public StackFrameFilterResult process(StackFrame frame) { if (frame.getIterationStatus().getIndex() >= 20) { return StackFrameFilterResult.DROP_REMAINING; } return StackFrameFilterResult.INCLUDE; } } 3. Remove noise in between fire event and invoke observer public class InvokeObserverStackFrameFilter implements ExceptionStackFrameFilter<Throwable> { @Override public StackFrameFilterResult process(StackFrame frame) { StackTraceElement el = frame.getStackTraceElement(); if (frame.isMarkSet("event.firing")) { if (isReflectionInvoke(el)) { frame.clearMark("event.firing"); return StackFrameFilterResult.DROP; } else { return StackFrameFilterResult.DROP; } } else if (el.getClassName().contains(".BeanManager") && el.getMethodName().equals("fireEvent")) { frame.mark("event.firing"); return StackFrameFilterResult.INCLUDE; } return StackFrameFilterResult.INCLUDE; } private boolean isReflectionInvoke(StackTraceElement candidate) { return candidate.getClassName().equals(Method.class.getName()) && candidate.getMethodName().equals("invoke"); } } 4. Flatten reflections invoke into a single line public class ReflectionInvokeStackFrameFilter implements ExceptionStackFrameFilter<Throwable> { @Override public StackFrameFilterResult process(StackFrame frame) { if (frame.isMarkSet("reflections.invoke")) { if (frame.getStackTraceElement().getMethodName().startsWith("invoke") || frame.getStackTraceElement().getClassName().contains("_WeldClientProxy")) { return StackFrameFilterResult.DROP; } else { frame.clearMark("reflections.invoke"); } } return StackFrameFilterResult.INCLUDE; } } -- This message is automatically generated by JIRA. For more information on JIRA, see: http://www.atlassian.com/software/jira