Module org.eclipse.jgit

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

Class MidxIterators

java.lang.Object

org.eclipse.jgit.internal.storage.midx.MidxIterators

public final class MidxIterators
extends Object

Helpers for midx iterators

Method Summary

Modifier and Type	Method	Description
static MultiPackIndex.MidxIterator	dedup(MultiPackIndex.MidxIterator source)	Dedup consecutive duplicates from a midx iterator
static MultiPackIndex.MidxIterator	fromPackIndexIterator(String packName, PackIndex idx)	Wrap a PackIndex iterator so it looks like a midx iterator with a fixed packId
static MultiPackIndex.MidxIterator	join(List<MultiPackIndex.MidxIterator> iterators)	Merge results from multiple midx iterators.

Methods inherited from class java.lang.Object

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

Method Details

fromPackIndexIterator

public static MultiPackIndex.MidxIterator fromPackIndexIterator(String packName,
 PackIndex idx)

Wrap a PackIndex iterator so it looks like a midx iterator with a fixed packId

Parameters:

packName - pack name this iterator is going over

idx - a PackIndex

Returns:

a midx iterator that returns the objects of the pack index in the original iterator order

join

public static MultiPackIndex.MidxIterator join(List<MultiPackIndex.MidxIterator> iterators)

Merge results from multiple midx iterators.

This iterator can return duplicates (in ascending packId order). Wrap with dedup(MidxIterator) to remove duplicates.

This iterator shifts the pack ids in iterator order. If the first iterator covers 3 packs, packIds of the second iterator are increased by 3.

Parameters:

iterators - midx iterators to combine

Returns:

a unique iterator that returns the union of the iterators in sha1 order. The packIds of the entries are shi

dedup

public static MultiPackIndex.MidxIterator dedup(MultiPackIndex.MidxIterator source)

Dedup consecutive duplicates from a midx iterator

Parameters:

source - a midx iterator emitting entries in sha1 order. In case of duplicates, the first one is returned and others skipped.

Returns:

iterator without duplicates.