Class InMemoryRepository.MemObjDatabase
java.lang.Object
org.eclipse.jgit.lib.ObjectDatabase
org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase
org.eclipse.jgit.internal.storage.dfs.InMemoryRepository.MemObjDatabase
- All Implemented Interfaces:
AutoCloseable
- Enclosing class:
- InMemoryRepository
DfsObjDatabase used by InMemoryRepository.
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Nested Class Summary
Nested classes/interfaces inherited from class org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase
DfsObjDatabase.PackList, DfsObjDatabase.PackSource
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Field Summary
Fields -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprotected void
commitPackImpl
(Collection<DfsPackDescription> desc, Collection<DfsPackDescription> replace) Implementation of pack commit.long
Get a quick, rough count of objects in this repository.protected List<DfsPackDescription>
List the available pack files.protected DfsPackDescription
newPack
(DfsObjDatabase.PackSource source) Generate a new unique name for a pack file.protected ReadableChannel
openFile
(DfsPackDescription desc, PackExt ext) Open a pack, pack index, or other related file for reading.protected void
Try to rollback a pack creation.void
setReadableChannelBlockSizeForTest
(int blockSize) protected DfsOutputStream
writeFile
(DfsPackDescription desc, PackExt ext) Open a pack, pack index, or other related file for writing.Methods inherited from class org.eclipse.jgit.internal.storage.dfs.DfsObjDatabase
addPack, addReftable, clearCache, close, commitPack, getCurrentPackList, getCurrentPacks, getCurrentReftables, getPackList, getPacks, getReaderOptions, getReftables, getRepository, has, newInserter, newPack, newReader, reftableComparator, scanPacks, setPackComparator
Methods inherited from class org.eclipse.jgit.lib.ObjectDatabase
create, exists, has, newCachedDatabase, open, open
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Field Details
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packs
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blockSize
private int blockSize
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Constructor Details
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MemObjDatabase
MemObjDatabase(DfsRepository repo)
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Method Details
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setReadableChannelBlockSizeForTest
public void setReadableChannelBlockSizeForTest(int blockSize) - Parameters:
blockSize
- force a different block size for testing.
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listPacks
Description copied from class:DfsObjDatabase
List the available pack files.The returned list must support random access and must be mutable by the caller. It is sorted in place using the natural sorting of the returned DfsPackDescription objects.
- Specified by:
listPacks
in classDfsObjDatabase
- Returns:
- available packs. May be empty if there are no packs.
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newPack
Description copied from class:DfsObjDatabase
Generate a new unique name for a pack file.- Specified by:
newPack
in classDfsObjDatabase
- Parameters:
source
- where the pack stream is created.- Returns:
- a unique name for the pack file. Must not collide with any other pack file name in the same DFS.
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commitPackImpl
protected void commitPackImpl(Collection<DfsPackDescription> desc, Collection<DfsPackDescription> replace) Description copied from class:DfsObjDatabase
Implementation of pack commit.- Specified by:
commitPackImpl
in classDfsObjDatabase
- Parameters:
desc
- description of the new packs.replace
- if not null, list of packs to remove.- See Also:
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rollbackPack
Description copied from class:DfsObjDatabase
Try to rollback a pack creation.JGit DFS always writes the pack first, then the index. If the pack does not yet exist, then neither does the index. A safe DFS implementation would try to remove both files to ensure they are really gone.
A rollback does not support failures, as it only occurs when there is already a failure in progress. A DFS implementor may wish to log warnings/error messages when a rollback fails, but should not send new exceptions up the Java callstack.
- Specified by:
rollbackPack
in classDfsObjDatabase
- Parameters:
desc
- pack to delete.
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openFile
protected ReadableChannel openFile(DfsPackDescription desc, PackExt ext) throws FileNotFoundException, IOException Description copied from class:DfsObjDatabase
Open a pack, pack index, or other related file for reading.- Specified by:
openFile
in classDfsObjDatabase
- Parameters:
desc
- description of pack related to the data that will be read. This is an instance previously obtained fromDfsObjDatabase.listPacks()
, but not necessarily from the same DfsObjDatabase instance.ext
- file extension that will be read i.e "pack" or "idx".- Returns:
- channel to read the file.
- Throws:
FileNotFoundException
- the file does not exist.IOException
- the file cannot be opened.
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writeFile
Description copied from class:DfsObjDatabase
Open a pack, pack index, or other related file for writing.- Specified by:
writeFile
in classDfsObjDatabase
- Parameters:
desc
- description of pack related to the data that will be written. This is an instance previously obtained fromDfsObjDatabase.newPack(PackSource)
.ext
- file extension that will be written i.e "pack" or "idx".- Returns:
- channel to write the file.
- Throws:
IOException
- the file cannot be opened.
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getApproximateObjectCount
public long getApproximateObjectCount()Description copied from class:ObjectDatabase
Get a quick, rough count of objects in this repository. Ignores loose objects. Returns-1
if an exception occurs.- Specified by:
getApproximateObjectCount
in classObjectDatabase
- Returns:
- quick, rough count of objects in this repository,
-1
if an exception occurs
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