com.google.gerrit.server.git

Interface RefCache

All Known Implementing Classes:

ChainedReceiveCommands, RepoRefCache

public interface RefCache

Simple short-lived cache of individual refs read from a repo.

Within a single request that is known to read a small bounded number of refs, this class can be used to ensure a consistent view of one ref, and avoid multiple system calls to read refs multiple times.

Note: Implementations of this class are only appropriate for short-term caching, and do not support invalidation. It is also not threadsafe.

Method Summary

Modifier and Type	Method and Description
java.util.Optional<org.eclipse.jgit.lib.ObjectId>	get(java.lang.String refName) Get the possibly-cached value of a ref.

Method Detail

get

java.util.Optional<org.eclipse.jgit.lib.ObjectId> get(java.lang.String refName)
                                               throws java.io.IOException

Get the possibly-cached value of a ref.

Parameters:

refName - name of the ref.

Returns:

value of the ref; absent if the ref does not exist in the repo. Never null, and never present with a value of ObjectId.zeroId().

Throws:

java.io.IOException