org.apache.log4j

Class EnhancedThrowableRenderer

java.lang.Object

org.apache.log4j.EnhancedThrowableRenderer

All Implemented Interfaces:

ThrowableRenderer

public final class EnhancedThrowableRenderer
extends java.lang.Object
implements ThrowableRenderer

Enhanced implementation of ThrowableRenderer. Uses Throwable.getStackTrace if running on JDK 1.4 or later and delegates to DefaultThrowableRenderer.render on earlier virtual machines.

Since:

1.2.16

Field Summary

Fields

Modifier and Type	Field and Description
private java.lang.reflect.Method	getClassNameMethod StackTraceElement.getClassName() method.
private java.lang.reflect.Method	getStackTraceMethod Throwable.getStackTrace() method.

Constructor Summary

Constructors

Constructor and Description
EnhancedThrowableRenderer() Construct new instance.

Method Summary

Modifier and Type	Method and Description
java.lang.String[]	doRender(java.lang.Throwable throwable) Render Throwable.
private java.lang.Class	findClass(java.lang.String className) Find class given class name.
private java.lang.String	formatElement(java.lang.Object element, java.util.Map classMap) Format one element from stack trace.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

getStackTraceMethod

private java.lang.reflect.Method getStackTraceMethod

Throwable.getStackTrace() method.

getClassNameMethod

private java.lang.reflect.Method getClassNameMethod

StackTraceElement.getClassName() method.

Constructor Detail

EnhancedThrowableRenderer

public EnhancedThrowableRenderer()

Construct new instance.

Method Detail

doRender

public java.lang.String[] doRender(java.lang.Throwable throwable)

Render Throwable.

Specified by:

doRender in interface ThrowableRenderer

Parameters:

throwable - throwable, may not be null.

Returns:

String representation.

formatElement

private java.lang.String formatElement(java.lang.Object element,
                                       java.util.Map classMap)

Format one element from stack trace.

Parameters:

element - element, may not be null.

classMap - map of class name to location.

Returns:

string representation of element.

findClass

private java.lang.Class findClass(java.lang.String className)
                           throws java.lang.ClassNotFoundException

Find class given class name.

Parameters:

className - class name, may not be null.

Returns:

class, will not be null.

Throws:

java.lang.ClassNotFoundException - thrown if class can not be found.