Package org.eclipse.jgit.revwalk

Class BitmapWalker

java.lang.Object

org.eclipse.jgit.revwalk.BitmapWalker

public final class BitmapWalker
extends Object

Helper class to do ObjectWalks with pack index bitmaps.

Since:

4.10

Constructor Summary

Constructors

Constructor	Description
BitmapWalker(ObjectWalk walker, BitmapIndex bitmapIndex, ProgressMonitor pm)	Create a BitmapWalker.

Method Summary

Modifier and Type	Method	Description
BitmapIndex.BitmapBuilder	findObjects(Iterable<? extends ObjectId> start, BitmapIndex.BitmapBuilder seen, boolean ignoreMissing)	Return, as a bitmap, the objects reachable from the objects in start.
long	getCountOfBitmapIndexMisses()	Return the number of objects that had to be walked because they were not covered by a bitmap.
void	setPrevBitmap(BitmapIndex.Bitmap prevBitmap)	Set the bitmap associated with the cached commit for the walker.
void	setPrevCommit(AnyObjectId prevCommit)	Set the cached commit for the walker.

Methods inherited from class java.lang.Object

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

Constructor Detail

BitmapWalker

public BitmapWalker(ObjectWalk walker,
                    BitmapIndex bitmapIndex,
                    ProgressMonitor pm)

Create a BitmapWalker.

Parameters:

walker - walker to use when traversing the object graph.

bitmapIndex - index to obtain bitmaps from.

pm - progress monitor to report progress on.

Method Detail

setPrevCommit

public void setPrevCommit(AnyObjectId prevCommit)

Set the cached commit for the walker.

Parameters:

prevCommit - the cached commit.

Since:

5.8

setPrevBitmap

public void setPrevBitmap(BitmapIndex.Bitmap prevBitmap)

Set the bitmap associated with the cached commit for the walker.

Parameters:

prevBitmap - the bitmap associated with the cached commit.

Since:

5.8

getCountOfBitmapIndexMisses

public long getCountOfBitmapIndexMisses()

Return the number of objects that had to be walked because they were not covered by a bitmap.

Returns:

the number of objects that had to be walked because they were not covered by a bitmap.

findObjects

public BitmapIndex.BitmapBuilder findObjects(Iterable<? extends ObjectId> start,
                                             BitmapIndex.BitmapBuilder seen,
                                             boolean ignoreMissing)
                                      throws MissingObjectException,
                                             IncorrectObjectTypeException,
                                             IOException

Return, as a bitmap, the objects reachable from the objects in start.

Parameters:

start - the objects to start the object traversal from.

seen - the objects to skip if encountered during traversal.

ignoreMissing - true to ignore missing objects, false otherwise.

Returns:

as a bitmap, the objects reachable from the objects in start.

Throws:

MissingObjectException - the object supplied is not available from the object database. This usually indicates the supplied object is invalid, but the reference was constructed during an earlier invocation to RevWalk.lookupAny(AnyObjectId, int).

IncorrectObjectTypeException - the object was not parsed yet and it was discovered during parsing that it is not actually the type of the instance passed in. This usually indicates the caller used the wrong type in a RevWalk.lookupAny(AnyObjectId, int) call.

IOException - a pack file or loose object could not be read.