org.apache.log.output.io.rotate

Class RevolvingFileStrategy

public class RevolvingFileStrategy extends Object implements FileStrategy

strategy for naming log files based on appending revolving suffix. If the initial rotation is not specified then the class will attempt to calculate the rotation number via the following algorithm. It will search for the file with the highest number in the rotation. It will then increment its rotation number and use that number. If all files in rotation are present then it will then set the initial rotation to the next rotation after the most recently created file.

Author: Avalon Development Team Bernhard Huber Peter Donald David Gray

Field Summary
File	m_baseFile
DecimalFormat	m_decimalFormat
int	m_maxRotations
int	m_rotation
static String	PATTERN

Constructor Summary
	RevolvingFileStrategy(File baseFile, int maxRotations) Creation of a new instane ofthe revolving file strategy.
	RevolvingFileStrategy(File baseFile, int initialRotation, int maxRotations) Creation of a new instane ofthe revolving file strategy.

Method Summary
int	calculateInitialRotation() Method that searches through files that match the pattern for resolving file and determine the last generation written to.
int	calculateRotationForFile(File file) Return the rotation for the specified file
int[]	calculateRotations(File[] matchingFiles) Generate an array of rotation numbers for all the files specified.
int	getCurrentRotation() Retrieve the current rotation number.
File[]	getMatchingFiles() Get a list of files that could have been part of the rotation.
File	nextFile() Calculate the real file name from the base filename.