LoggingEvent.getCallerData() fails when called from a sub class
---------------------------------------------------------------
Key: LBCLASSIC-303
URL: http://jira.qos.ch/browse/LBCLASSIC-303
Project: logback-classic
Issue Type: Bug
Affects Versions: 1.0.0
Reporter: Greg Thomas
Assignee: Logback dev list
This is probably best demonstrated with a code example;
package com.example;
import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.spi.LoggingEvent;
public class Test {
Logger logger;
public static void main(String[] args) {
Test test = new Test();
test.go();
}
private void go() {
SuperClass anotherClass = new SuperClass();
anotherClass.go();
anotherClass = new SubClass();
anotherClass.go();
}
private class SuperClass {
public void go() {
LoggerContext lc = new LoggerContext();
lc.setName("default");
// ... a logger
logger = lc.getLogger("root");
LoggingEvent le = new
LoggingEvent(this.getClass().getName(),
logger, Level.DEBUG, "Test logging
event", new Exception(
"test Ex"), new
String[] { "something" });
StackTraceElement[] callerData = le.getCallerData();
System.out.println("LoggingEvent in " +
this.getClass().getName() + " has "
+ callerData.length + " stack trace
elements:");
for (StackTraceElement stackTraceElement : callerData) {
System.out.println("Element=" +
stackTraceElement);
}
}
}
private class SubClass extends SuperClass {
}
}
The output of this is as follows;
LoggingEvent in com.example.Test$SuperClass has 2 stack trace elements:
Element=com.example.Test.go(Test.java:20)
Element=com.example.Test.main(Test.java:14)
LoggingEvent in com.example.Test$SubClass has 0 stack trace elements:
This is despite exactly the same go() method being called; it's not being
modified in the subclass. Note that although the example uses inner classes,
the same behaviour is exhibited in regular classes too.
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