org.apache.log4j.varia
Class ListAppender
java.lang.Object
org.apache.log4j.spi.ComponentBase
org.apache.log4j.AppenderSkeleton
org.apache.log4j.varia.ListAppender
- All Implemented Interfaces:
- Appender, Component, OptionHandler
- public final class ListAppender
- extends AppenderSkeleton
A very basic appender that takes the events and stores them in to a
java.util.List for late retrieval.
Note: This implemenation intentionally does not allow direct modification
of the internal List model to reduce the synchronization complexity that
this would require.
- Author:
- Paul Smith
- See Also:
ListModelAppender
Constructor Summary |
ListAppender()
Constructs a list appender. |
Method Summary |
protected void |
append(LoggingEvent event)
Subclasses of AppenderSkeleton should implement this method
to perform actual logging. |
void |
clearList()
Removes all the Events from the model |
void |
close()
Release any resources allocated within the appender such as file handles,
network connections, etc.
|
List |
getList()
Returns a writeable, BUT cloned List of all the LoggingEvents that are contained
in the internal model. |
Methods inherited from class org.apache.log4j.AppenderSkeleton |
activateOptions, addFilter, clearFilters, doAppend, finalize, getErrorHandler, getFilter, getFirstFilter, getLayout, getName, getThreshold, isActive, isAsSevereAsThreshold, isClosed, setErrorHandler, setLayout, setName, setThreshold |
ListAppender
public ListAppender()
- Constructs a list appender.
getList
public final List getList()
- Returns a writeable, BUT cloned List of all the LoggingEvents that are contained
in the internal model. You are free to modify this list without
worry of synchronization, but note that any modifications to the returned list
that you do will have NO impact on the internal model of this Appender.
- Returns:
- Modifiable List
append
protected void append(LoggingEvent event)
- Description copied from class:
AppenderSkeleton
- Subclasses of
AppenderSkeleton
should implement this method
to perform actual logging. See also AppenderSkeleton.doAppend
method.
- Specified by:
append
in class AppenderSkeleton
close
public void close()
- Description copied from interface:
Appender
- Release any resources allocated within the appender such as file handles,
network connections, etc.
It is a programming error to append to a closed appender.
clearList
public void clearList()
- Removes all the Events from the model
Copyright 2000-2005 Apache Software Foundation.