org.eclipse.jgit.internal.revwalk

Class PedestrianReachabilityChecker

java.lang.Object

org.eclipse.jgit.internal.revwalk.PedestrianReachabilityChecker

All Implemented Interfaces:

ReachabilityChecker

public class PedestrianReachabilityChecker
extends Object
implements ReachabilityChecker

Checks the reachability walking the graph from the starters towards the target.

Constructor Summary

Constructors

Constructor and Description
PedestrianReachabilityChecker(boolean topoSort, RevWalk walk) New instance of the reachability checker using a existing walk.

Method Summary

Modifier and Type	Method and Description
Optional<RevCommit>	areAllReachable(Collection<RevCommit> targets, Stream<RevCommit> starters) Check if all targets are reachable from the starter commits.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.eclipse.jgit.revwalk.ReachabilityChecker

areAllReachable

Constructor Detail

PedestrianReachabilityChecker

public PedestrianReachabilityChecker(boolean topoSort,
                                     RevWalk walk)

New instance of the reachability checker using a existing walk.

Parameters:

topoSort - walk commits in topological order

walk - RevWalk instance to reuse. Caller retains ownership.

Method Detail

areAllReachable

public Optional<RevCommit> areAllReachable(Collection<RevCommit> targets,
                                           Stream<RevCommit> starters)
                                    throws MissingObjectException,
                                           IncorrectObjectTypeException,
                                           IOException

Description copied from interface: ReachabilityChecker

Check if all targets are reachable from the starter commits.

Caller should parse the objectIds (preferably with walk.parseCommit() and handle missing/incorrect type objects before calling this method.

Specified by:

areAllReachable in interface ReachabilityChecker

Parameters:

targets - commits to reach.

starters - known starting points.

Returns:

An unreachable target if at least one of the targets is unreachable. An empty optional if all targets are reachable from the starters.

Throws:

MissingObjectException - if any of the incoming objects doesn't exist in the repository.

IncorrectObjectTypeException - if any of the incoming objects is not a commit or a tag.

IOException - if any of the underlying indexes or readers can not be opened.