Module org.eclipse.jgit

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

Class PackIndexMerger

java.lang.Object

org.eclipse.jgit.internal.storage.midx.PackIndexMerger

public class PackIndexMerger
extends Object

Collect the stats and offers an iterator over the union of n-pack indexes.

The multipack index is a list of (sha1, packid, offset) ordered by sha1. We can build it from the individual pack indexes (sha1, offset) ordered by sha1, with a simple merge ignoring duplicates.

This class encapsulates the merging logic and precalculates the stats that the index needs (like total count of objects). To limit memory consumption, it does the merge as it goes during the iteration and iterators use mutable entries. The stats of the combined index are calculated in an iteration at construction time.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PackIndexMerger.Builder	Builder collecting the inputs for the merger.

Method Summary

Modifier and Type	Method	Description
static PackIndexMerger.Builder	builder()	Create a builder

Methods inherited from class java.lang.Object

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

Method Details

builder

public static PackIndexMerger.Builder builder()

Create a builder

Returns:

an empty builder