net.logAnalyzer.handlers
Class OnDemandLogHandler

java.lang.Object
  net.logAnalyzer.handlers.AbstractLogHandler
      net.logAnalyzer.handlers.OnDemandLogHandler

All Implemented Interfaces:

LALogHandler, java.lang.Runnable

public class OnDemandLogHandler

extends AbstractLogHandler

This log handler parses messages on demand. It must be used to handle large log files with small memory needs.

Version:

0.1

Author:

Karim REFEYTON

Constructor Summary

OnDemandLogHandler(FilesSetReader input, java.lang.String pattern)

Method Summary

int	getSize() Returns the number of messages read.
protected void	initParsing() Modification to the inherited behavior.
protected LAMessage	loadMessage(int index) Modification to the inherited behavior.
protected void	releaseParsing() Returns to the start of the files set.
protected void	saveMessage(LAMessage message, long pointer) Modification to the inherited behavior.

Methods inherited from class net.logAnalyzer.handlers.AbstractLogHandler

addLogHandlerListener, fireEndParsing, fireStartParsing, fireStepParsing, getAnalyzers, getConverter, getConverter, getConverterIndex, getConverters, getFileLength, getFilePointer, getLastException, getMaxRecords, getMessage, getMessageConverter, getMessages, getPercentDone, getReader, isParsing, parse, parseMessage, readNextLine, removeLogHandlerListener, run, setAnalyzers, setMaxRecords

Methods inherited from class java.lang.Object

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

Constructor Detail

OnDemandLogHandler

public OnDemandLogHandler(FilesSetReader input,
                          java.lang.String pattern)
                   throws java.io.FileNotFoundException,
                          NoConverterException

Parameters:

input -

pattern -

Throws:

java.io.FileNotFoundException

NoConverterException

Method Detail

getSize

public int getSize()

Returns the number of messages read.

Specified by:

getSize in interface LALogHandler

Specified by:

getSize in class AbstractLogHandler

Returns:

physical number of messages.

See Also:

LALogHandler.getSize()

loadMessage

protected LAMessage loadMessage(int index)

Modification to the inherited behavior.

Specified by:

loadMessage in class AbstractLogHandler

Parameters:

index - Index of the messageLabel to load.

Returns:

Message.

See Also:

AbstractLogHandler.loadMessage(int)

saveMessage

protected void saveMessage(LAMessage message,
                           long pointer)

Modification to the inherited behavior.

Specified by:

saveMessage in class AbstractLogHandler

Parameters:

message - Parsed messageLabel.

pointer - File pointer to the start of the messageLabel.

See Also:

AbstractLogHandler.saveMessage(LAMessage, long)

initParsing

protected void initParsing()
                    throws java.io.IOException

Modification to the inherited behavior.

Overrides:

initParsing in class AbstractLogHandler

Throws:

java.io.IOException - If an error occures.

See Also:

AbstractLogHandler.initParsing()

releaseParsing

protected void releaseParsing()
                       throws java.io.IOException

Returns to the start of the files set.

Overrides:

releaseParsing in class AbstractLogHandler

Throws:

java.io.IOException - If an error occures.

See Also:

AbstractLogHandler.releaseParsing()