org.apache.oodt.commons.util

Class MemoryLogger

java.lang.Object

org.apache.oodt.commons.util.MemoryLogger

All Implemented Interfaces:

PropertyChangeListener, EventListener, LogListener

public class MemoryLogger
extends Object
implements LogListener

In-memory logger. This logger maintains log messages in memory.

Author:

Kelly

Field Summary

Fields

Modifier and Type	Field and Description
static int	DEF_SIZE The default size of the message cache, 32.

Constructor Summary

Constructors

Constructor and Description
MemoryLogger() Create a memory logger.
MemoryLogger(int size) Create a memory logger.

Method Summary

Modifier and Type	Method and Description
List	getMessages() Get the list of messages logged so far.
int	getSize() Get the maximum size of the cache.
void	messageLogged(LogEvent event) A message got logged.
void	propertyChange(PropertyChangeEvent ignore)
void	setSize(int size) Set the maximum size of the cache.
void	streamStarted(LogEvent ignore) A stream got started.
void	streamStopped(LogEvent ignore) A stream was stopped.

Methods inherited from class java.lang.Object

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

Field Detail

DEF_SIZE

public static final int DEF_SIZE

The default size of the message cache, 32.

See Also:

Constant Field Values

Constructor Detail

MemoryLogger

public MemoryLogger()

Create a memory logger. The size of the message cache comes from the system property org.apache.oodt.commons.util.MemoryLogger.size, or DEF_SIZE if that property isn't specified.

MemoryLogger

public MemoryLogger(int size)

Create a memory logger.

Parameters:

size - Size of the message cache.

Method Detail

getMessages

public List getMessages()

Get the list of messages logged so far. This returns a list of Strings in time order.

Returns:

A list of message strings.

getSize

public int getSize()

Get the maximum size of the cache.

Returns:

The maximum size of the cache.

setSize

public void setSize(int size)

Set the maximum size of the cache.

Parameters:

size - The new maximum cache size.

streamStarted

public void streamStarted(LogEvent ignore)

Description copied from interface: LogListener

A stream got started. The event contains the details of stream start, including

• The name of the stream, from LogEvent.getStream().
• The time the stream got started, from LogEvent.getTimestamp()
• The source of the new stream start, from EventObject.getSource() (always a String).

Specified by:

streamStarted in interface LogListener

Parameters:

ignore - The logging event.

streamStopped

public void streamStopped(LogEvent ignore)

Description copied from interface: LogListener

A stream was stopped. The event contains the detail of the stream stop, which is the name of the stream, from LogEvent.getStream() or EventObject.getSource() (always a String).

Specified by:

streamStopped in interface LogListener

Parameters:

ignore - The logging event.

propertyChange

public void propertyChange(PropertyChangeEvent ignore)

Specified by:

propertyChange in interface PropertyChangeListener

messageLogged

public void messageLogged(LogEvent event)

Description copied from interface: LogListener

A message got logged. The event contains the details of the message, including

• The timestamp of the message, from LogEvent.getTimestamp().
• The source of the message, from EventObject.getSource(), which is always a String.
• The category of the message, from LogEvent.getCategory().
• The message text, from LogEvent.getMessage().

Specified by:

messageLogged in interface LogListener

Parameters:

event - The logging event.