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Java Source Code / Java Documentation » Development » LogKit » org.apache.log 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   org.apache.log.Hierarchy

Hierarchy
public class Hierarchy (Code)
This class encapsulates a basic independent log hierarchy. The hierarchy is essentially a safe wrapper around root logger.
author:
   Avalon Development Team
author:
   Peter Donald



Constructor Summary
public  Hierarchy()
     Create a hierarchy object.

Method Summary
public synchronized  voidaddLoggerListener(LoggerListener loggerListener)
     Set the LoggerListener associated with hierarchy.
public static  HierarchygetDefaultHierarchy()
     Retrieve the default hierarchy.

In most cases the default LogHierarchy is the only one used in an application.

public  LoggergetLoggerFor(String category)
     Retrieve a logger for named category.
final public  LoggergetRootLogger()
     Utility method to retrieve logger for hierarchy.
public  voidlog(String message, Throwable throwable)
     Logs an error message to error handler.
public  voidlog(String message)
     Logs an error message to error handler.
public synchronized  voidremoveLoggerListener(LoggerListener loggerListener)
     Remove the LoggerListener associated with hierarchy.
public  voidsetDefaultLogTarget(LogTarget target)
     Set the default log target for hierarchy.
public  voidsetDefaultLogTargets(LogTarget[] targets)
     Set the default log targets for this hierarchy.
public  voidsetDefaultPriority(Priority priority)
     Set the default priority for hierarchy.
public  voidsetErrorHandler(ErrorHandler errorHandler)
     Set the ErrorHandler associated with hierarchy.


Constructor Detail
Hierarchy
public Hierarchy()(Code)
Create a hierarchy object. The default LogTarget writes to stdout.




Method Detail
addLoggerListener
public synchronized void addLoggerListener(LoggerListener loggerListener)(Code)
Set the LoggerListener associated with hierarchy. This is a unicast listener, so only one LoggerListener is allowed.
Parameters:
  loggerListener - the LoggerListener
throws:
  UnsupportedOperationException - if no more LoggerListeners arepermitted.



getDefaultHierarchy
public static Hierarchy getDefaultHierarchy()(Code)
Retrieve the default hierarchy.

In most cases the default LogHierarchy is the only one used in an application. However when security is a concern or multiple independent applications will be running in same JVM it is advantageous to create new Hierarchies rather than reuse default.

the default Hierarchy



getLoggerFor
public Logger getLoggerFor(String category)(Code)
Retrieve a logger for named category.
Parameters:
  category - the context the Logger



getRootLogger
final public Logger getRootLogger()(Code)
Utility method to retrieve logger for hierarchy. This method is intended for use by sub-classes which can take responsibility for manipulating Logger directly. the Logger



log
public void log(String message, Throwable throwable)(Code)
Logs an error message to error handler. Default Error Handler is stderr.
Parameters:
  message - a message to log
Parameters:
  throwable - a Throwable to log



log
public void log(String message)(Code)
Logs an error message to error handler. Default Error Handler is stderr.
Parameters:
  message - a message to log



removeLoggerListener
public synchronized void removeLoggerListener(LoggerListener loggerListener)(Code)
Remove the LoggerListener associated with hierarchy. Perform this step before adding a new one if you want to change it.
Parameters:
  loggerListener - the LoggerListener



setDefaultLogTarget
public void setDefaultLogTarget(LogTarget target)(Code)
Set the default log target for hierarchy. This is the target inherited by loggers if no other target is specified.
Parameters:
  target - the default target



setDefaultLogTargets
public void setDefaultLogTargets(LogTarget[] targets)(Code)
Set the default log targets for this hierarchy. These are the targets inherited by loggers if no other targets are specified
Parameters:
  targets - the default targets



setDefaultPriority
public void setDefaultPriority(Priority priority)(Code)
Set the default priority for hierarchy. This is the priority inherited by loggers if no other priority is specified.
Parameters:
  priority - the default priority



setErrorHandler
public void setErrorHandler(ErrorHandler errorHandler)(Code)
Set the ErrorHandler associated with hierarchy.
Parameters:
  errorHandler - the ErrorHandler



Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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