org.grouplens.lenskit.util.io

Class UpToDateChecker

java.lang.Object

org.grouplens.lenskit.util.io.UpToDateChecker

public class UpToDateChecker
extends Object

Utility class for detecting if a file is up-to-date.

Since:

1.1

Constructor Summary

Constructors

Constructor and Description
UpToDateChecker()

Method Summary

Modifier and Type	Method and Description
void	addInput(File file) Add an input file.
void	addInput(long ts) Add an input timestamp.
void	addOutput(File file) Add an output file to check.
void	addOutput(long ts) Add an output timestamp.
boolean	isUpToDate() Query if the output is up to date.
boolean	isUpToDate(long ts) Query if a particular output is up to date.

Methods inherited from class java.lang.Object

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

Constructor Detail

UpToDateChecker

public UpToDateChecker()

Method Detail

isUpToDate

public boolean isUpToDate()

Query if the output is up to date.

Returns:

true if all outputs are up to date with respect to the inputs.

isUpToDate

public boolean isUpToDate(long ts)

Query if a particular output is up to date.

Parameters:

ts - An output timestamp.

Returns:

true if an output with modification time ts is up to date with respect to the input resources.

addInput

public void addInput(long ts)

Add an input timestamp.

Parameters:

ts - The modification time of an input source, in milliseconds since the epoch.

addInput

public void addInput(File file)

Add an input file.

Parameters:

file - The input file.

addOutput

public void addOutput(long ts)

Add an output timestamp.

Parameters:

ts - An output timestamp.

addOutput

public void addOutput(File file)

Add an output file to check.

Parameters:

file - The file to add to the output files to check.