Package org.eclipse.jgit.internal.storage.file

Class PackBitmapIndexBuilder

java.lang.Object

org.eclipse.jgit.internal.storage.file.PackBitmapIndex

org.eclipse.jgit.internal.storage.file.PackBitmapIndexBuilder

public class PackBitmapIndexBuilder
extends PackBitmapIndex

Helper for constructing PackBitmapIndexes.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PackBitmapIndexBuilder.StoredEntry	Data object for the on disk representation of a bitmap entry.

Nested classes/interfaces inherited from class org.eclipse.jgit.internal.storage.file.PackBitmapIndex

PackBitmapIndex.SupplierWithIOException<T>

Field Summary

Fields inherited from class org.eclipse.jgit.internal.storage.file.PackBitmapIndex

FLAG_REUSE

Constructor Summary

Constructors

Constructor	Description
PackBitmapIndexBuilder(List<ObjectToPack> objects)	Creates a PackBitmapIndex used for building the contents of an index file.

Method Summary

Modifier and Type	Method	Description
void	addBitmap(AnyObjectId objectId, com.googlecode.javaewah.EWAHCompressedBitmap bitmap, int flags)	Stores the bitmap for the objectId.
void	addBitmap(AnyObjectId objectId, BitmapIndex.Bitmap bitmap, int flags)	Stores the bitmap for the objectId.
int	findPosition(AnyObjectId objectId)	Finds the position in the bitmap of the object.
com.googlecode.javaewah.EWAHCompressedBitmap	getBitmap(AnyObjectId objectId)	Returns the previously constructed bitmap for the object.
int	getBitmapCount()	Returns the number of bitmaps in this bitmap index.
com.googlecode.javaewah.EWAHCompressedBitmap	getBlobs()	Get the blob object bitmap.
com.googlecode.javaewah.EWAHCompressedBitmap	getCommits()	Get the commit object bitmap.
List<PackBitmapIndexBuilder.StoredEntry>	getCompressedBitmaps()	Get list of xor compressed entries that need to be written.
ObjectId	getObject(int position)	Get the object at the bitmap position.
int	getObjectCount()	Obtain the total number of objects described by this index.
ObjectIdOwnerMap<ObjectIdOwnerMap.Entry>	getObjectSet()	Get set of objects included in the pack.
int	getOptions()	Get the index storage options.
com.googlecode.javaewah.EWAHCompressedBitmap	getTags()	Get the tag object bitmap.
com.googlecode.javaewah.EWAHCompressedBitmap	getTrees()	Get the tree object bitmap.
com.googlecode.javaewah.EWAHCompressedBitmap	ofObjectType(com.googlecode.javaewah.EWAHCompressedBitmap bitmap, int type)	Returns a bitmap containing positions for objects that have the given Git type.
void	processBitmapForWrite(BitmapCommit c, BitmapIndex.Bitmap bitmap, int flags)	Processes a commit and prepares its bitmap to write to the bitmap index file.
void	resetBitmaps(int size)	Remove all the bitmaps entries added.

Methods inherited from class org.eclipse.jgit.internal.storage.file.PackBitmapIndex

open, read, read

Methods inherited from class java.lang.Object

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

Constructor Detail

PackBitmapIndexBuilder

public PackBitmapIndexBuilder(List<ObjectToPack> objects)

Creates a PackBitmapIndex used for building the contents of an index file.

Parameters:

objects - objects sorted by name. The list must be initially sorted by ObjectId (name); it will be resorted in place.

Method Detail

getObjectSet

public ObjectIdOwnerMap<ObjectIdOwnerMap.Entry> getObjectSet()

Get set of objects included in the pack.

Returns:

set of objects included in the pack.

addBitmap

public void addBitmap(AnyObjectId objectId,
                      BitmapIndex.Bitmap bitmap,
                      int flags)

Stores the bitmap for the objectId.

Parameters:

objectId - the object id key for the bitmap.

bitmap - the bitmap

flags - the flags to be stored with the bitmap

processBitmapForWrite

public void processBitmapForWrite(BitmapCommit c,
                                  BitmapIndex.Bitmap bitmap,
                                  int flags)

Processes a commit and prepares its bitmap to write to the bitmap index file.

Parameters:

c - the commit corresponds to the bitmap.

bitmap - the bitmap to be written.

flags - the flags of the commit.

addBitmap

public void addBitmap(AnyObjectId objectId,
                      com.googlecode.javaewah.EWAHCompressedBitmap bitmap,
                      int flags)

Stores the bitmap for the objectId.

Parameters:

objectId - the object id key for the bitmap.

bitmap - the bitmap

flags - the flags to be stored with the bitmap

ofObjectType

public com.googlecode.javaewah.EWAHCompressedBitmap ofObjectType(com.googlecode.javaewah.EWAHCompressedBitmap bitmap,
                                                                 int type)

Returns a bitmap containing positions for objects that have the given Git type.

Specified by:

ofObjectType in class PackBitmapIndex

Parameters:

bitmap - the object bitmap.

type - the Git type.

Returns:

the object bitmap with only objects of the Git type.

findPosition

public int findPosition(AnyObjectId objectId)

Finds the position in the bitmap of the object.

Specified by:

findPosition in class PackBitmapIndex

Parameters:

objectId - the id for which the bitmap position will be found.

Returns:

the bitmap id or -1 if the object was not found.

getObject

public ObjectId getObject(int position)
                   throws IllegalArgumentException

Get the object at the bitmap position.

Specified by:

getObject in class PackBitmapIndex

Parameters:

position - the id for which the object will be found.

Returns:

the ObjectId.

Throws:

IllegalArgumentException - when the item is not found.

getCommits

public com.googlecode.javaewah.EWAHCompressedBitmap getCommits()

Get the commit object bitmap.

Returns:

the commit object bitmap.

getTrees

public com.googlecode.javaewah.EWAHCompressedBitmap getTrees()

Get the tree object bitmap.

Returns:

the tree object bitmap.

getBlobs

public com.googlecode.javaewah.EWAHCompressedBitmap getBlobs()

Get the blob object bitmap.

Returns:

the blob object bitmap.

getTags

public com.googlecode.javaewah.EWAHCompressedBitmap getTags()

Get the tag object bitmap.

Returns:

the tag object bitmap.

getOptions

public int getOptions()

Get the index storage options.

Returns:

the index storage options.

getBitmapCount

public int getBitmapCount()

Returns the number of bitmaps in this bitmap index.

Specified by:

getBitmapCount in class PackBitmapIndex

Returns:

the number of bitmaps in this bitmap index.

resetBitmaps

public void resetBitmaps(int size)

Remove all the bitmaps entries added.

Parameters:

size - the expected number of bitmap entries to be written.

getObjectCount

public int getObjectCount()

Obtain the total number of objects described by this index. getObjectCount() - 1 is the largest bit that will be set in a bitmap.

Specified by:

getObjectCount in class PackBitmapIndex

Returns:

number of objects in this index, and likewise in the associated pack that this index was generated from.

getCompressedBitmaps

public List<PackBitmapIndexBuilder.StoredEntry> getCompressedBitmaps()

Get list of xor compressed entries that need to be written.

Returns:

a list of the xor compressed entries.

getBitmap

public com.googlecode.javaewah.EWAHCompressedBitmap getBitmap(AnyObjectId objectId)

Returns the previously constructed bitmap for the object.

Specified by:

getBitmap in class PackBitmapIndex

Parameters:

objectId - the id for which the bitmap will be found.

Returns:

the bitmap or null if the object was not found.