Module org.eclipse.jgit

Package org.eclipse.jgit.internal.storage.commitgraph

Class ChangedPathFilter

java.lang.Object

org.eclipse.jgit.internal.storage.commitgraph.ChangedPathFilter

public class ChangedPathFilter
extends Object

A changed path filter for a commit.

Since:

6.7

Field Summary

Fields

Modifier and Type	Field	Description
static final int	BITS_PER_ENTRY	The minimum bits per entry, as described in man gitformat-commit-graph(5).
static final ChangedPathFilter	FULL	A filter that matches every path.
static final int	PATH_HASH_COUNT	The number of times a path is hashed, as described in man gitformat-commit-graph(5).

Method Summary

Modifier and Type	Method	Description
static ChangedPathFilter	fromFile(byte[] data, int offset, int length)	Returns a filter read from a file.
static ChangedPathFilter	fromPaths(Set<ByteBuffer> paths)	Returns a filter that matches all given paths.
boolean	maybeContains(byte[] path)	Checks if this changed path filter could contain path.
void	writeTo(ByteArrayOutputStream s)	Writes this filter to the given stream.

Methods inherited from class java.lang.Object

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

Field Details

PATH_HASH_COUNT

public static final int PATH_HASH_COUNT

The number of times a path is hashed, as described in man gitformat-commit-graph(5). The value of this constant is the only value JGit currently supports.

See Also:

• Constant Field Values

BITS_PER_ENTRY

public static final int BITS_PER_ENTRY

The minimum bits per entry, as described in man gitformat-commit-graph(5). The value of this constant is the only value JGit currently supports.

See Also:

• Constant Field Values

FULL

public static final ChangedPathFilter FULL

A filter that matches every path.

Method Details

fromPaths

public static ChangedPathFilter fromPaths(Set<ByteBuffer> paths)

Returns a filter that matches all given paths.

Because of the nature of Bloom filters, this filter may also match paths not in the given set.

Parameters:

paths - the paths that the filter must match

Returns:

the corresponding filter

fromFile

public static ChangedPathFilter fromFile(byte[] data,
 int offset,
 int length)

Returns a filter read from a file.

Parameters:

data - data (read from a commit graph file)

offset - offset into data

length - length of data

Returns:

the corresponding filter

maybeContains

public boolean maybeContains(byte[] path)

Checks if this changed path filter could contain path.

Parameters:

path - path to check existence of

Returns:

true if the filter could contain path, false if the filter definitely does not contain path

writeTo

public void writeTo(ByteArrayOutputStream s)

Writes this filter to the given stream.

Parameters:

s - stream to write to