Package org.apache.commons.io.file

Class CountingPathVisitor

java.lang.Object

java.nio.file.SimpleFileVisitor<Path>

org.apache.commons.io.file.SimplePathVisitor

org.apache.commons.io.file.CountingPathVisitor

All Implemented Interfaces:

FileVisitor<Path>, PathVisitor

Direct Known Subclasses:

AccumulatorPathVisitor, CleaningPathVisitor, CopyDirectoryVisitor, DeletingPathVisitor

public class CountingPathVisitor
extends SimplePathVisitor

Counts files, directories, and sizes, as a visit proceeds.

Since:

2.7

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	CountingPathVisitor.AbstractBuilder<T,B extends CountingPathVisitor.AbstractBuilder<T,B>>	Builds instances of CountingPathVisitor.
static class	CountingPathVisitor.Builder	Builds instances of CountingPathVisitor.

Constructor Summary

Constructors

Constructor	Description
CountingPathVisitor(Counters.PathCounters pathCounters)	Constructs a new instance.
CountingPathVisitor(Counters.PathCounters pathCounters, PathFilter fileFilter, PathFilter directoryFilter)	Constructs a new instance.
CountingPathVisitor(Counters.PathCounters pathCounters, PathFilter fileFilter, PathFilter directoryFilter, IOBiFunction<Path,IOException,FileVisitResult> visitFileFailed)	Deprecated. Use CountingPathVisitor.Builder.

Method Summary

Modifier and Type	Method	Description
protected boolean	accept(Path file, BasicFileAttributes attributes)	Tests whether the given file is accepted by the file filter.
boolean	equals(Object obj)
Counters.PathCounters	getPathCounters()	Gets the visitation counts.
int	hashCode()
FileVisitResult	postVisitDirectory(Path dir, IOException exc)
FileVisitResult	preVisitDirectory(Path dir, BasicFileAttributes attributes)
String	toString()
protected void	updateDirCounter(Path dir, IOException exc)	Updates the counter for visiting the given directory.
protected void	updateFileCounters(Path file, BasicFileAttributes attributes)	Updates the counters for visiting the given file.
FileVisitResult	visitFile(Path file, BasicFileAttributes attributes)
static CountingPathVisitor	withBigIntegerCounters()	Constructs a new instance configured with a BigInteger Counters.PathCounters.
static CountingPathVisitor	withLongCounters()	Constructs a new instance configured with a long Counters.PathCounters.

Methods inherited from class org.apache.commons.io.file.SimplePathVisitor

visitFileFailed

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Details

CountingPathVisitor

public CountingPathVisitor(Counters.PathCounters pathCounters)

Constructs a new instance.

Parameters:

pathCounters - How to count path visits.

See Also:

• CountingPathVisitor.Builder

CountingPathVisitor

public CountingPathVisitor(Counters.PathCounters pathCounters,
 PathFilter fileFilter,
 PathFilter directoryFilter)

Constructs a new instance.

Parameters:

pathCounters - How to count path visits.

fileFilter - Filters which files to count.

directoryFilter - Filters which directories to count.

Since:

2.9.0

See Also:

• CountingPathVisitor.Builder

CountingPathVisitor

@Deprecated
public CountingPathVisitor(Counters.PathCounters pathCounters,
 PathFilter fileFilter,
 PathFilter directoryFilter,
 IOBiFunction<Path,IOException,FileVisitResult> visitFileFailed)

Deprecated.

Use CountingPathVisitor.Builder.

Constructs a new instance.

Parameters:

pathCounters - How to count path visits.

fileFilter - Filters which files to count.

directoryFilter - Filters which directories to count.

visitFileFailed - Called on SimplePathVisitor.visitFileFailed(Path, IOException).

Since:

2.12.0

Method Details

withBigIntegerCounters

public static CountingPathVisitor withBigIntegerCounters()

Constructs a new instance configured with a BigInteger Counters.PathCounters.

Returns:

a new instance configured with a BigInteger Counters.PathCounters.

withLongCounters

public static CountingPathVisitor withLongCounters()

Constructs a new instance configured with a long Counters.PathCounters.

Returns:

a new instance configured with a long Counters.PathCounters.

accept

protected boolean accept(Path file,
 BasicFileAttributes attributes)

Tests whether the given file is accepted by the file filter.

Parameters:

file - the visited file.

attributes - the visited file attributes.

Returns:

true to copy the given file, false if not.

Since:

2.20.0

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

getPathCounters

public Counters.PathCounters getPathCounters()

Gets the visitation counts.

Returns:

the visitation counts.

hashCode

public int hashCode()

Overrides:

hashCode in class Object

postVisitDirectory

public FileVisitResult postVisitDirectory(Path dir,
 IOException exc)
                                   throws IOException

Specified by:

postVisitDirectory in interface FileVisitor<Path>

Overrides:

postVisitDirectory in class SimpleFileVisitor<Path>

Throws:

IOException

preVisitDirectory

public FileVisitResult preVisitDirectory(Path dir,
 BasicFileAttributes attributes)
                                  throws IOException

Specified by:

preVisitDirectory in interface FileVisitor<Path>

Overrides:

preVisitDirectory in class SimpleFileVisitor<Path>

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object

updateDirCounter

protected void updateDirCounter(Path dir,
 IOException exc)

Updates the counter for visiting the given directory.

Parameters:

dir - the visited directory.

exc - Encountered exception.

Since:

2.9.0

updateFileCounters

protected void updateFileCounters(Path file,
 BasicFileAttributes attributes)

Updates the counters for visiting the given file.

Parameters:

file - the visited file.

attributes - the visited file attributes.

visitFile

public FileVisitResult visitFile(Path file,
 BasicFileAttributes attributes)
                          throws IOException

Specified by:

visitFile in interface FileVisitor<Path>

Overrides:

visitFile in class SimpleFileVisitor<Path>

Throws:

IOException