Package org.apache.commons.logging.impl

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

Implementation of the org.apache.commons.logging.Log interface that wraps the standard JDK logging mechanisms that are available in SourceForge's Lumberjack for JDKs prior to 1.4.

Implementation of the org.apache.commons.logging.Log interface that wraps the standard JDK logging mechanisms that were introduced in the Merlin release (JDK 1.4).

Concrete subclass of {@link LogFactory} specific to log4j.

Implementation of {@link Log} that maps directly to a Log4J Category.

Implementation of {@link Log} that maps directly to a Log4J Logger.

Concrete subclass of {@link LogFactory} that implements the following algorithm to dynamically select a logging implementation class to instantiate a wrapper for.

• Use a factory configuration attribute named org.apache.commons.logging.Log to identify the requested implementation class.
• Use the org.apache.commons.logging.Log system property to identify the requested implementation class.
• If Log4J is available, return an instance of org.apache.commons.logging.impl.Log4JLogger.
• If JDK 1.4 or later is available, return an instance of org.apache.commons.logging.impl.Jdk14Logger.
• Otherwise, return an instance of org.apache.commons.logging.impl.SimpleLog.

If the selected {@link Log} implementation class has a setLogFactory() method that accepts a {@link LogFactory} parameter, this method will be called on each newly created instance to identify the associated factory.

Implementation of org.apache.commons.logging.Log that wraps the avalon-logkit logging system.

Trivial implementation of Log that throws away all messages.

Simple implementation of Log that sends all enabled log messages, for all defined loggers, to System.err.