Module org.eclipse.jgit

Package org.eclipse.jgit.internal.storage.midx

Interface MultiPackIndex

public interface MultiPackIndex

An index over multiple packs

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static class	MultiPackIndex.PackOffset	(packId, offset) coordinates of an object

Method Summary

Modifier and Type	Method	Description
MultiPackIndex.PackOffset	find(AnyObjectId objectId)	Obtain the location of the object.
int	findPosition(AnyObjectId objectId)	Position of the object in this midx, when all covered objects are ordered by SHA1.
long	getMemorySize()	Memory size of this multipack index
int	getObjectCount()	Number of objects in this midx
String[]	getPackNames()	Obtain the array of packfiles in the MultiPackIndex.
boolean	hasObject(AnyObjectId oid)	Does this index contains the object
void	resolve(Set<ObjectId> matches, AbbreviatedObjectId id, int matchLimit)	Find objects matching the prefix abbreviation.

Method Details

getPackNames

String[] getPackNames()

Obtain the array of packfiles in the MultiPackIndex.

The pack ids correspond to positions in this list.

Returns:

array of packnames refered in this multipak index

hasObject

boolean hasObject(AnyObjectId oid)

Does this index contains the object

Parameters:

oid - object id

Returns:

true of the index knows this the object

find

MultiPackIndex.PackOffset find(AnyObjectId objectId)

Obtain the location of the object.

The returned object can be reused by the implementations. Callers must create a #copy() if they want to keep a reference.

Parameters:

objectId - objectId to read.

Returns:

mutable instance with the location or null if not found.

findPosition

int findPosition(AnyObjectId objectId)

Position of the object in this midx, when all covered objects are ordered by SHA1.

As the midx removes duplicates, this position is NOT equivalent to "position in pack + total count of objects in previous packs in the stack".

Parameters:

objectId - an object id

Returns:

position of the object in this multipack index

getObjectCount

int getObjectCount()

Number of objects in this midx

This number doesn't match with the sum of objects in each covered pack because midx removes duplicates.

Returns:

number of objects in this midx

resolve

void resolve(Set<ObjectId> matches,
 AbbreviatedObjectId id,
 int matchLimit)

Find objects matching the prefix abbreviation.

Parameters:

matches - set to add any located ObjectIds to. This is an output parameter.

id - prefix to search for.

matchLimit - maximum number of results to return. At most this many ObjectIds should be added to matches before returning.

getMemorySize

long getMemorySize()

Memory size of this multipack index

Returns:

size of this multipack index in memory, in bytes