Package org.projectnessie.versioned.persist.adapter

Class ReferencesUtil

java.lang.Object

org.projectnessie.versioned.persist.adapter.ReferencesUtil

@Beta
public final class ReferencesUtil
extends java.lang.Object

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	ReferencesUtil.IdentifyHeadsAndForkPoints

Method Summary

Modifier and Type	Method	Description
static ReferencesUtil	forDatabaseAdapter(DatabaseAdapter databaseAdapter)
HeadsAndForkPoints	identifyAllHeadsAndForkPoints(int expectedCommitCount, java.util.function.Consumer<CommitLogEntry> commitHandler)	Identifies all heads and fork-points.
ReferencedAndUnreferencedHeads	identifyReferencedAndUnreferencedHeads(HeadsAndForkPoints headsAndForkPoints)	Identifies unreferenced heads and heads that are part of a named reference.

Methods inherited from class java.lang.Object

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

Method Detail

forDatabaseAdapter

public static ReferencesUtil forDatabaseAdapter(DatabaseAdapter databaseAdapter)

identifyAllHeadsAndForkPoints

public HeadsAndForkPoints identifyAllHeadsAndForkPoints(int expectedCommitCount,
                                                        java.util.function.Consumer<CommitLogEntry> commitHandler)

Identifies all heads and fork-points.

• "Heads" are commits that are not referenced by other commits.
• "Fork points" are commits that are the parent of more than one other commit. Knowing these commits can help to optimize the traversal of commit logs of multiple heads.

Parameters:

expectedCommitCount - it is recommended to tell the implementation the total number of commits in the Nessie repository

commitHandler - called for every commit while scanning all commits

identifyReferencedAndUnreferencedHeads

public ReferencedAndUnreferencedHeads identifyReferencedAndUnreferencedHeads(HeadsAndForkPoints headsAndForkPoints)
                                                                      throws org.projectnessie.versioned.ReferenceNotFoundException

Identifies unreferenced heads and heads that are part of a named reference.

Requires the output of identifyAllHeadsAndForkPoints(int, Consumer).

Throws:

org.projectnessie.versioned.ReferenceNotFoundException