Class PackBitmapIndexRemapper
java.lang.Object
org.eclipse.jgit.internal.storage.file.PackBitmapIndex
org.eclipse.jgit.internal.storage.file.PackBitmapIndexRemapper
- All Implemented Interfaces:
Iterable<PackBitmapIndexRemapper.Entry>
public class PackBitmapIndexRemapper
extends PackBitmapIndex
implements Iterable<PackBitmapIndexRemapper.Entry>
A PackBitmapIndex that remaps the bitmaps in the previous index to the
positions in the new pack index. Note, unlike typical PackBitmapIndex
implementations this implementation is not thread safe, as it is intended to
be used with a PackBitmapIndexBuilder, which is also not thread safe.
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Nested Class Summary
Nested ClassesModifier and TypeClassDescriptionstatic final class
An entry in the old PackBitmapIndex.Nested classes/interfaces inherited from class org.eclipse.jgit.internal.storage.file.PackBitmapIndex
PackBitmapIndex.SupplierWithIOException<T>
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Field Summary
FieldsModifier and TypeFieldDescriptionprivate final BitSet
(package private) final PackBitmapIndex
private final BasePackBitmapIndex
private final int[]
Fields inherited from class org.eclipse.jgit.internal.storage.file.PackBitmapIndex
FLAG_REUSE, packChecksum
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Constructor Summary
ConstructorsModifierConstructorDescriptionprivate
PackBitmapIndexRemapper
(BasePackBitmapIndex oldPackIndex, PackBitmapIndex newPackIndex) private
PackBitmapIndexRemapper
(PackBitmapIndex newPackIndex) -
Method Summary
Modifier and TypeMethodDescriptionint
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
Returns the number of bitmaps in this bitmap index.getObject
(int position) Get the object at the bitmap position.int
Obtain the total number of objects described by this index.iterator()
static PackBitmapIndexRemapper
newPackBitmapIndex
(BitmapIndex prevBitmapIndex, PackBitmapIndex newIndex) A PackBitmapIndex that maps the positions in the prevBitmapIndex to the ones in the newIndex.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.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
Methods inherited from interface java.lang.Iterable
forEach, spliterator
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Field Details
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oldPackIndex
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newPackIndex
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inflated
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prevToNewMapping
private final int[] prevToNewMapping
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Constructor Details
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PackBitmapIndexRemapper
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PackBitmapIndexRemapper
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Method Details
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newPackBitmapIndex
public static PackBitmapIndexRemapper newPackBitmapIndex(BitmapIndex prevBitmapIndex, PackBitmapIndex newIndex) A PackBitmapIndex that maps the positions in the prevBitmapIndex to the ones in the newIndex.- Parameters:
prevBitmapIndex
- the bitmap index with the old mapping.newIndex
- the bitmap index with the new mapping.- Returns:
- a bitmap index that attempts to do the mapping between the two.
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findPosition
Finds the position in the bitmap of the object.- Specified by:
findPosition
in classPackBitmapIndex
- Parameters:
objectId
- the id for which the bitmap position will be found.- Returns:
- the bitmap id or -1 if the object was not found.
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getObject
Get the object at the bitmap position.- Specified by:
getObject
in classPackBitmapIndex
- Parameters:
position
- the id for which the object will be found.- Returns:
- the ObjectId.
- Throws:
IllegalArgumentException
- when the item is not found.
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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 classPackBitmapIndex
- Returns:
- number of objects in this index, and likewise in the associated pack that this index was generated from.
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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 classPackBitmapIndex
- Parameters:
bitmap
- the object bitmap.type
- the Git type.- Returns:
- the object bitmap with only objects of the Git type.
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iterator
- Specified by:
iterator
in interfaceIterable<PackBitmapIndexRemapper.Entry>
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getBitmap
Returns the previously constructed bitmap for the object.- Specified by:
getBitmap
in classPackBitmapIndex
- Parameters:
objectId
- the id for which the bitmap will be found.- Returns:
- the bitmap or null if the object was not found.
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getBitmapCount
public int getBitmapCount()Returns the number of bitmaps in this bitmap index.- Specified by:
getBitmapCount
in classPackBitmapIndex
- Returns:
- the number of bitmaps in this bitmap index.
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