GitFileDiffCache (Gerrit Review Plugin API Documentation)

All Known Implementing Classes:

GitFileDiffCacheImpl
```
public interface GitFileDiffCache
```
This cache computes pure git diff for a single file path according to a git tree diff.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`GitFileDiff`	`get(GitFileDiffCacheKey key)`	Returns the git file diff for a single file path identified by its key.
`com.google.common.collect.ImmutableMap<GitFileDiffCacheKey,GitFileDiff>`	`getAll(Iterable<GitFileDiffCacheKey> keys)`	Returns the file diff for a collection of file paths identified by their keys.

- Method Detail
  - get
```
GitFileDiff get(GitFileDiffCacheKey key)
         throws DiffNotAvailableException
```
    Returns the git file diff for a single file path identified by its key.
    
    Parameters:
    
    key - identifies two git trees, 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 tree IDs of the key are invalid for this project or if file contents could not be read.
  - getAll
```
com.google.common.collect.ImmutableMap<GitFileDiffCacheKey,GitFileDiff> getAll(Iterable<GitFileDiffCacheKey> keys)
                                                                              throws DiffNotAvailableException
```
    Returns the file diff for a collection of file paths identified by their keys.
    
    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 tree IDs or if file contents could not be read.