Package com.google.gerrit.server.patch.filediff

Class FileDiffCacheImpl

java.lang.Object

com.google.gerrit.server.patch.filediff.FileDiffCacheImpl

All Implemented Interfaces:

FileDiffCache

public class FileDiffCacheImpl
extends Object
implements FileDiffCache

Cache for the single file diff between two commits for a single file path. This cache adds extra Gerrit logic such as identifying edits due to rebase.

If the FileDiffCacheKey.oldCommit() is equal to ObjectId.zeroId(), the git diff will be evaluated against the empty tree.

Constructor Summary

Constructors

Constructor	Description
FileDiffCacheImpl(com.google.common.cache.LoadingCache<FileDiffCacheKey,FileDiffOutput> cache)

Method Summary

Modifier and Type	Method	Description
FileDiffOutput	get(FileDiffCacheKey key)	Returns the file diff for a single file path identified by its key.
com.google.common.collect.ImmutableMap<FileDiffCacheKey,FileDiffOutput>	getAll(Iterable<FileDiffCacheKey> keys)	Returns the file diff for a collection of file paths identified by their keys.
static com.google.inject.Module	module()

Methods inherited from class java.lang.Object

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

Constructor Details

FileDiffCacheImpl

@Inject
public FileDiffCacheImpl(com.google.common.cache.LoadingCache<FileDiffCacheKey,FileDiffOutput> cache)

Method Details

module

public static com.google.inject.Module module()

get

public FileDiffOutput get(FileDiffCacheKey key)
                   throws DiffNotAvailableException

Description copied from interface: FileDiffCache

Returns the file diff for a single file path identified by its key.

Specified by:

get in interface FileDiffCache

Parameters:

key - identifies two git commits, a specific file path and other diff parameters.

Returns:

the file diff for a single file path identified by its key.

Throws:

DiffNotAvailableException - if the commit IDs of the key are invalid for this project or if file contents could not be read.

getAll

public com.google.common.collect.ImmutableMap<FileDiffCacheKey,FileDiffOutput> getAll(Iterable<FileDiffCacheKey> keys)
                                                                               throws DiffNotAvailableException

Description copied from interface: FileDiffCache

Returns the file diff for a collection of file paths identified by their keys.

Specified by:

getAll in interface FileDiffCache

Parameters:

keys - identifying different file paths of different projects.

Returns:

a map of the input keys to their corresponding git file diffs.

Throws:

DiffNotAvailableException - if the diff failed to be evaluated for one or more of the input keys due to invalid commit IDs or if file contents could not be read.