Package org.eclipse.jgit.internal.storage.file

Class RefDirectoryUpdate

java.lang.Object

org.eclipse.jgit.lib.RefUpdate

org.eclipse.jgit.internal.storage.file.RefDirectoryUpdate

class RefDirectoryUpdate
extends RefUpdate

Updates any reference stored by RefDirectory.

Nested Class Summary

Nested classes/interfaces inherited from class org.eclipse.jgit.lib.RefUpdate

RefUpdate.Result

Field Summary

Fields

Modifier and Type	Field	Description
private RefDirectory	database
private LockFile	lock
private boolean	shouldDeref

Constructor Summary

Constructors

Constructor	Description
RefDirectoryUpdate(RefDirectory r, Ref ref)

Method Summary

Modifier and Type	Method	Description
protected RefUpdate.Result	doDelete(RefUpdate.Result status)	Do delete
protected RefUpdate.Result	doLink(java.lang.String target)	Do link
protected RefUpdate.Result	doUpdate(RefUpdate.Result status)	Do update
protected RefDirectory	getRefDatabase()	Get the reference database this update modifies.
protected Repository	getRepository()	Get the repository storing the database's objects.
private java.lang.String	toResultString(RefUpdate.Result status)
protected boolean	tryLock(boolean deref)	Try to acquire the lock on the reference.
protected void	unlock()	Releases the lock taken by RefUpdate.tryLock(boolean) if it succeeded.

Methods inherited from class org.eclipse.jgit.lib.RefUpdate

delete, delete, disableRefLog, forceUpdate, getExpectedOldObjectId, getName, getNewObjectId, getOldObjectId, getPushCertificate, getRef, getRefLogIdent, getRefLogMessage, getResult, isDetachingSymbolicRef, isForceRefLog, isForceUpdate, isRefLogIncludingResult, link, setCheckConflicting, setDetachingSymbolicRef, setExpectedOldObjectId, setForceRefLog, setForceUpdate, setNewObjectId, setOldObjectId, setPushCertificate, setRefLogIdent, setRefLogMessage, update, update

Methods inherited from class java.lang.Object

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

Field Detail

database

private final RefDirectory database

shouldDeref

private boolean shouldDeref

lock

private LockFile lock

Constructor Detail

RefDirectoryUpdate

RefDirectoryUpdate(RefDirectory r,
                   Ref ref)

Method Detail

getRefDatabase

protected RefDirectory getRefDatabase()

Get the reference database this update modifies.

Specified by:

getRefDatabase in class RefUpdate

Returns:

the reference database this update modifies.

getRepository

protected Repository getRepository()

Get the repository storing the database's objects.

Specified by:

getRepository in class RefUpdate

Returns:

the repository storing the database's objects.

tryLock

protected boolean tryLock(boolean deref)
                   throws java.io.IOException

Try to acquire the lock on the reference.

If the locking was successful the implementor must set the current identity value by calling RefUpdate.setOldObjectId(ObjectId).

Specified by:

tryLock in class RefUpdate

Parameters:

deref - true if the lock should be taken against the leaf level reference; false if it should be taken exactly against the current reference.

Returns:

true if the lock was acquired and the reference is likely protected from concurrent modification; false if it failed.

Throws:

java.io.IOException - the lock couldn't be taken due to an unexpected storage failure, and not because of a concurrent update.

unlock

protected void unlock()

Releases the lock taken by RefUpdate.tryLock(boolean) if it succeeded.

Specified by:

unlock in class RefUpdate

doUpdate

protected RefUpdate.Result doUpdate(RefUpdate.Result status)
                             throws java.io.IOException

Do update

Specified by:

doUpdate in class RefUpdate

Parameters:

status - a RefUpdate.Result object.

Returns:

result

Throws:

java.io.IOException

toResultString

private java.lang.String toResultString(RefUpdate.Result status)

doDelete

protected RefUpdate.Result doDelete(RefUpdate.Result status)
                             throws java.io.IOException

Do delete

Specified by:

doDelete in class RefUpdate

Parameters:

status - a RefUpdate.Result object.

Returns:

result

Throws:

java.io.IOException

doLink

protected RefUpdate.Result doLink(java.lang.String target)
                           throws java.io.IOException

Do link

Specified by:

doLink in class RefUpdate

Parameters:

target - a String object.

Returns:

RefUpdate.Result.NEW on success.

Throws:

java.io.IOException