public class AccumulatorPathVisitor extends CountingPathVisitor
Use with care on large file trees as each visited Path element is remembered.
Path dir = PathUtils.current(); // We are interested in files older than one day Instant cutoff = Instant.now().minus(Duration.ofDays(1)); AccumulatorPathVisitor visitor = AccumulatorPathVisitor.withLongCounters(new AgeFileFilter(cutoff)); // // Walk one dir Files.walkFileTree(dir, Collections.emptySet(), 1, visitor); System.out.println(visitor.getPathCounters()); System.out.println(visitor.getFileList()); // visitor.getPathCounters().reset(); // // Walk dir tree Files.walkFileTree(dir, visitor); System.out.println(visitor.getPathCounters()); System.out.println(visitor.getDirList()); System.out.println(visitor.getFileList());
Modifier and Type | Field and Description |
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private java.util.List<java.nio.file.Path> |
dirList |
private java.util.List<java.nio.file.Path> |
fileList |
EMPTY_STRING_ARRAY
Constructor and Description |
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AccumulatorPathVisitor()
Constructs a new instance.
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AccumulatorPathVisitor(Counters.PathCounters pathCounter)
Constructs a new instance that counts file system elements.
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AccumulatorPathVisitor(Counters.PathCounters pathCounter,
PathFilter fileFilter,
PathFilter dirFilter)
Constructs a new instance.
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AccumulatorPathVisitor(Counters.PathCounters pathCounter,
PathFilter fileFilter,
PathFilter dirFilter,
IOBiFunction<java.nio.file.Path,java.io.IOException,java.nio.file.FileVisitResult> visitFileFailed)
Constructs a new instance.
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Modifier and Type | Method and Description |
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private void |
add(java.util.List<java.nio.file.Path> list,
java.nio.file.Path dir) |
boolean |
equals(java.lang.Object obj) |
java.util.List<java.nio.file.Path> |
getDirList()
Gets a copy of the list of visited directories.
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java.util.List<java.nio.file.Path> |
getFileList()
Gets a copy of the list of visited files.
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int |
hashCode() |
java.util.List<java.nio.file.Path> |
relativizeDirectories(java.nio.file.Path parent,
boolean sort,
java.util.Comparator<? super java.nio.file.Path> comparator)
Relativizes each directory path with
Path.relativize(Path) against the given parent , optionally
sorting the result. |
java.util.List<java.nio.file.Path> |
relativizeFiles(java.nio.file.Path parent,
boolean sort,
java.util.Comparator<? super java.nio.file.Path> comparator)
Relativizes each file path with
Path.relativize(Path) against the given parent , optionally
sorting the result. |
protected void |
updateDirCounter(java.nio.file.Path dir,
java.io.IOException exc)
Updates the counter for visiting the given directory.
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protected void |
updateFileCounters(java.nio.file.Path file,
java.nio.file.attribute.BasicFileAttributes attributes)
Updates the counters for visiting the given file.
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static AccumulatorPathVisitor |
withBigIntegerCounters()
Constructs a new instance configured with a BigInteger
Counters.PathCounters . |
static AccumulatorPathVisitor |
withBigIntegerCounters(PathFilter fileFilter,
PathFilter dirFilter)
Constructs a new instance configured with a BigInteger
Counters.PathCounters . |
static AccumulatorPathVisitor |
withLongCounters()
Constructs a new instance configured with a long
Counters.PathCounters . |
static AccumulatorPathVisitor |
withLongCounters(PathFilter fileFilter,
PathFilter dirFilter)
Constructs a new instance configured with a long
Counters.PathCounters . |
defaultDirFilter, defaultFileFilter, getPathCounters, postVisitDirectory, preVisitDirectory, toString, visitFile
visitFileFailed
private final java.util.List<java.nio.file.Path> dirList
private final java.util.List<java.nio.file.Path> fileList
public AccumulatorPathVisitor()
public AccumulatorPathVisitor(Counters.PathCounters pathCounter)
pathCounter
- How to count path visits.public AccumulatorPathVisitor(Counters.PathCounters pathCounter, PathFilter fileFilter, PathFilter dirFilter)
pathCounter
- How to count path visits.fileFilter
- Filters which files to count.dirFilter
- Filters which directories to count.public AccumulatorPathVisitor(Counters.PathCounters pathCounter, PathFilter fileFilter, PathFilter dirFilter, IOBiFunction<java.nio.file.Path,java.io.IOException,java.nio.file.FileVisitResult> visitFileFailed)
pathCounter
- How to count path visits.fileFilter
- Filters which files to count.dirFilter
- Filters which directories to count.visitFileFailed
- Called on SimplePathVisitor.visitFileFailed(Path, IOException)
.public static AccumulatorPathVisitor withBigIntegerCounters()
Counters.PathCounters
.Counters.PathCounters
.public static AccumulatorPathVisitor withBigIntegerCounters(PathFilter fileFilter, PathFilter dirFilter)
Counters.PathCounters
.fileFilter
- Filters files to accumulate and count.dirFilter
- Filters directories to accumulate and count.Counters.PathCounters
.public static AccumulatorPathVisitor withLongCounters()
Counters.PathCounters
.Counters.PathCounters
.public static AccumulatorPathVisitor withLongCounters(PathFilter fileFilter, PathFilter dirFilter)
Counters.PathCounters
.fileFilter
- Filters files to accumulate and count.dirFilter
- Filters directories to accumulate and count.Counters.PathCounters
.private void add(java.util.List<java.nio.file.Path> list, java.nio.file.Path dir)
public boolean equals(java.lang.Object obj)
equals
in class CountingPathVisitor
public java.util.List<java.nio.file.Path> getDirList()
public java.util.List<java.nio.file.Path> getFileList()
public int hashCode()
hashCode
in class CountingPathVisitor
public java.util.List<java.nio.file.Path> relativizeDirectories(java.nio.file.Path parent, boolean sort, java.util.Comparator<? super java.nio.file.Path> comparator)
Path.relativize(Path)
against the given parent
, optionally
sorting the result.parent
- A parent pathsort
- Whether to sortcomparator
- How to sort, null uses default sorting.public java.util.List<java.nio.file.Path> relativizeFiles(java.nio.file.Path parent, boolean sort, java.util.Comparator<? super java.nio.file.Path> comparator)
Path.relativize(Path)
against the given parent
, optionally
sorting the result.parent
- A parent pathsort
- Whether to sortcomparator
- How to sort, null uses default sorting.protected void updateDirCounter(java.nio.file.Path dir, java.io.IOException exc)
CountingPathVisitor
updateDirCounter
in class CountingPathVisitor
dir
- the visited directory.exc
- Encountered exception.protected void updateFileCounters(java.nio.file.Path file, java.nio.file.attribute.BasicFileAttributes attributes)
CountingPathVisitor
updateFileCounters
in class CountingPathVisitor
file
- the visited file.attributes
- the visited file attributes.