org.apache.commons.logging.impl: public class: AvalonLogger

org.apache.commons.logging.impl
public class: AvalonLogger [javadoc | source]

java.lang.Object
   org.apache.commons.logging.impl.AvalonLogger

All Implemented Interfaces:
Log

Implementation of commons-logging Log interface that delegates all logging calls to the Avalon logging abstraction: the Logger interface.

There are two ways in which this class can be used:

the instance can be constructed with an Avalon logger (by calling #AvalonLogger(Logger) ). In this case, it acts as a simple thin wrapping implementation over the logger. This is particularly useful when using a property setter.
the #setDefaultLogger class property can be called which sets the ancesteral Avalon logger for this class. Any AvalonLogger instances created through the LogFactory mechanisms will output to child loggers of this Logger.

Note: AvalonLogger does not implement Serializable because the constructors available for it make this impossible to achieve in all circumstances; there is no way to "reconnect" to an underlying Logger object on deserialization if one was just passed in to the constructor of the original object. This class was marked Serializable in the 1.0.4 release of commons-logging, but this never actually worked (a NullPointerException would be thrown as soon as the deserialized object was used), so removing this marker is not considered to be an incompatible change.

author:

 -  href="mailto:neeme@apache.org">Neeme Praks

version: $ - Revision: 424107 $ $Date: 2006-07-21 01:15:42 +0200 (fr, 21 jul 2006) $










    







    












    Constructor:
 public AvalonLogger(Logger logger) {
        this.logger = logger;
}
Constructs an AvalonLogger that outputs to the given
Logger instance.
Parameters:
logger -  the avalon logger implementation to delegate to
 public AvalonLogger(String name) {
        if (defaultLogger == null)
            throw new NullPointerException("default logger has to be specified if this constructor is used!");
        this.logger = defaultLogger.getChildLogger(name);
}
Constructs an AvalonLogger that will log to a child
of the Logger set by calling #setDefaultLogger .
Parameters:
name -  the name of the avalon logger implementation to delegate to










    Method from org.apache.commons.logging.impl.AvalonLogger Summary:

debug,   debug,   error,   error,   fatal,   fatal,   getLogger,   info,   info,   isDebugEnabled,   isErrorEnabled,   isFatalEnabled,   isInfoEnabled,   isTraceEnabled,   isWarnEnabled,   setDefaultLogger,   trace,   trace,   warn,   warn
Methods from java.lang.Object:

clone,   equals,   finalize,   getClass,   hashCode,   notify,   notifyAll,   toString,   wait,   wait,   wait
Method from org.apache.commons.logging.impl.AvalonLogger Detail:
 public  void debug(Object message) {
        if (getLogger().isDebugEnabled()) getLogger().debug(String.valueOf(message));
}
Logs a message with
org.apache.avalon.framework.logger.Logger.debug.
 public  void debug(Object message,
    Throwable t) {
        if (getLogger().isDebugEnabled()) getLogger().debug(String.valueOf(message), t);
}
Logs a message with
org.apache.avalon.framework.logger.Logger.debug.
 public  void error(Object message) {
        if (getLogger().isErrorEnabled()) getLogger().error(String.valueOf(message));
}
Logs a message with
org.apache.avalon.framework.logger.Logger.error.
 public  void error(Object message,
    Throwable t) {
        if (getLogger().isErrorEnabled()) getLogger().error(String.valueOf(message), t);
}
Logs a message with
org.apache.avalon.framework.logger.Logger.error.
 public  void fatal(Object message) {
        if (getLogger().isFatalErrorEnabled()) getLogger().fatalError(String.valueOf(message));
}
Logs a message with
org.apache.avalon.framework.logger.Logger.fatalError.
 public  void fatal(Object message,
    Throwable t) {
        if (getLogger().isFatalErrorEnabled()) getLogger().fatalError(String.valueOf(message), t);
}
Logs a message with
org.apache.avalon.framework.logger.Logger.fatalError.
 public Logger getLogger() {
        return logger;
}
Gets the Avalon logger implementation used to perform logging.
 public  void info(Object message) {
        if (getLogger().isInfoEnabled()) getLogger().info(String.valueOf(message));
}
Logs a message with
org.apache.avalon.framework.logger.Logger.info.
 public  void info(Object message,
    Throwable t) {
        if (getLogger().isInfoEnabled()) getLogger().info(String.valueOf(message), t);
}
Logs a message with
org.apache.avalon.framework.logger.Logger.info.
 public boolean isDebugEnabled() {
        return getLogger().isDebugEnabled();
}
Is logging to 
org.apache.avalon.framework.logger.Logger.debug enabled?
 public boolean isErrorEnabled() {
        return getLogger().isErrorEnabled();
}
Is logging to 
org.apache.avalon.framework.logger.Logger.error enabled?
 public boolean isFatalEnabled() {
        return getLogger().isFatalErrorEnabled();
}
Is logging to 
org.apache.avalon.framework.logger.Logger.fatalError enabled?
 public boolean isInfoEnabled() {
        return getLogger().isInfoEnabled();
}
Is logging to
org.apache.avalon.framework.logger.Logger.info enabled?
 public boolean isTraceEnabled() {
        return getLogger().isDebugEnabled();
}
Is logging to 
org.apache.avalon.framework.logger.Logger.debug enabled?
 public boolean isWarnEnabled() {
        return getLogger().isWarnEnabled();
}
Is logging to 
org.apache.avalon.framework.logger.Logger.warn enabled?
 public static  void setDefaultLogger(Logger logger) {
        defaultLogger = logger;
}
Sets the ancesteral Avalon logger from which the delegating loggers 
will descend.
 public  void trace(Object message) {
        if (getLogger().isDebugEnabled()) getLogger().debug(String.valueOf(message));
}
Logs a message with
org.apache.avalon.framework.logger.Logger.debug.
 public  void trace(Object message,
    Throwable t) {
        if (getLogger().isDebugEnabled()) getLogger().debug(String.valueOf(message), t);
}
Logs a message with
org.apache.avalon.framework.logger.Logger.debug.
 public  void warn(Object message) {
        if (getLogger().isWarnEnabled()) getLogger().warn(String.valueOf(message));
}
Logs a message with
org.apache.avalon.framework.logger.Logger.warn.
 public  void warn(Object message,
    Throwable t) {
        if (getLogger().isWarnEnabled()) getLogger().warn(String.valueOf(message), t);
}
Logs a message with
org.apache.avalon.framework.logger.Logger.warn.