org.eclipse.jgit.internal.storage.dfs

Class DfsPackDescription

java.lang.Object

org.eclipse.jgit.internal.storage.dfs.DfsPackDescription

All Implemented Interfaces:

Comparable<DfsPackDescription>

public class DfsPackDescription
extends Object
implements Comparable<DfsPackDescription>

Description of a DFS stored pack/index file.

Implementors may extend this class and add additional data members.

Instances of this class are cached with the DfsPackFile, and should not be modified once initialized and presented to the JGit DFS library.

Constructor Summary

Constructors

Constructor and Description
DfsPackDescription(DfsRepositoryDescription repoDesc, String name) Initialize a description by pack name and repository.

Method Summary

Methods

Modifier and Type	Method and Description
void	addFileExt(PackExt ext) Adds the pack file extension to the known list.
DfsPackDescription	clearPackStats() Discard the pack statistics, if it was populated.
int	compareTo(DfsPackDescription b) Sort packs according to the optimal lookup ordering.
boolean	equals(Object b)
long	getDeltaCount()
String	getFileName(PackExt ext)
long	getFileSize(PackExt ext)
int	getIndexVersion()
long	getLastModified()
long	getObjectCount()
DfsObjDatabase.PackSource	getPackSource()
PackWriter.Statistics	getPackStats()
DfsRepositoryDescription	getRepositoryDescription()
boolean	hasFileExt(PackExt ext)
int	hashCode()
DfsPackDescription	setDeltaCount(long cnt)
DfsPackDescription	setFileSize(PackExt ext, long bytes)
DfsPackDescription	setIndexVersion(int version)
DfsPackDescription	setLastModified(long timeMillis)
DfsPackDescription	setObjectCount(long cnt)
DfsPackDescription	setPackSource(DfsObjDatabase.PackSource source)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Detail

DfsPackDescription

public DfsPackDescription(DfsRepositoryDescription repoDesc,
                  String name)

Initialize a description by pack name and repository.

The corresponding index file is assumed to exist. If this is not true implementors must extend the class and override getFileName(PackExt).

Callers should also try to fill in other fields if they are reasonably free to access at the time this instance is being initialized.

Parameters:

name - name of the pack file. Must end with ".pack".

repoDesc - description of the repo containing the pack file.

Method Detail

getRepositoryDescription

public DfsRepositoryDescription getRepositoryDescription()

Returns:

description of the repository.

addFileExt

public void addFileExt(PackExt ext)

Adds the pack file extension to the known list.

Parameters:

ext - the file extension

hasFileExt

public boolean hasFileExt(PackExt ext)

Parameters:

ext - the file extension

Returns:

whether the pack file extensions is known to exist.

getFileName

public String getFileName(PackExt ext)

Parameters:

ext - the file extension

Returns:

name of the file.

getPackSource

public DfsObjDatabase.PackSource getPackSource()

Returns:

the source of the pack.

setPackSource

public DfsPackDescription setPackSource(DfsObjDatabase.PackSource source)

Parameters:

source - the source of the pack.

Returns:

this

getLastModified

public long getLastModified()

Returns:

time the pack was created, in milliseconds.

setLastModified

public DfsPackDescription setLastModified(long timeMillis)

Parameters:

timeMillis - time the pack was created, in milliseconds. 0 if not known.

Returns:

this

setFileSize

public DfsPackDescription setFileSize(PackExt ext,
                             long bytes)

Parameters:

ext - the file extension.

bytes - size of the file in bytes. If 0 the file is not known and will be determined on first read.

Returns:

this

getFileSize

public long getFileSize(PackExt ext)

Parameters:

ext - the file extension.

Returns:

size of the file, in bytes. If 0 the file size is not yet known.

getObjectCount

public long getObjectCount()

Returns:

number of objects in the pack.

setObjectCount

public DfsPackDescription setObjectCount(long cnt)

Parameters:

cnt - number of objects in the pack.

Returns:

this

getDeltaCount

public long getDeltaCount()

Returns:

number of delta compressed objects in the pack.

setDeltaCount

public DfsPackDescription setDeltaCount(long cnt)

Parameters:

cnt - number of delta compressed objects in the pack.

Returns:

this

getPackStats

public PackWriter.Statistics getPackStats()

Returns:

statistics from PackWriter, if the pack was built with it. Generally this is only available for packs created by DfsGarbageCollector or DfsPackCompactor, and only when the pack is being committed to the repository.

clearPackStats

public DfsPackDescription clearPackStats()

Discard the pack statistics, if it was populated.

Returns:

this

getIndexVersion

public int getIndexVersion()

Returns:

the version of the index file written.

setIndexVersion

public DfsPackDescription setIndexVersion(int version)

Parameters:

version - the version of the index file written.

Returns:

this

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object b)

Overrides:

equals in class Object

compareTo

public int compareTo(DfsPackDescription b)

Sort packs according to the optimal lookup ordering.

This method tries to position packs in the order readers should examine them when looking for objects by SHA-1. The default tries to sort packs with more recent modification dates before older packs, and packs with fewer objects before packs with more objects.

Specified by:

compareTo in interface Comparable<DfsPackDescription>

Parameters:

b - the other pack.

toString

public String toString()

Overrides:

toString in class Object