Package de.uplanet.util.transaction

Class IndirectDirectoryCreateTransaction

java.lang.Object

de.uplanet.util.transaction.IndirectDirectoryCreateTransaction

All Implemented Interfaces:

ITwoPhaseIOTransaction, ITwoPhaseTransaction

public final class IndirectDirectoryCreateTransaction
extends Object

Constructor Summary

Constructors

Constructor	Description
IndirectDirectoryCreateTransaction(File p_fileDst)

Method Summary

Modifier and Type	Method	Description
void	commit()	Commit the transaction.
File	getBackup()
File	getDestinationDirectory()	Get the destination file.
Throwable	getLastError()
boolean	hasBackup()
boolean	requestCommit()	Request a file system transaction.
boolean	rollback()	Try to rollback the file transaction.
String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

IndirectDirectoryCreateTransaction

public IndirectDirectoryCreateTransaction(File p_fileDst)
                                   throws IOException

Parameters:

p_fileDst -

Throws:

IOException

Method Detail

requestCommit

public boolean requestCommit()

Description copied from interface: ITwoPhaseTransaction

Request a file system transaction.

When this method returns true it has sucessfully moved the source file to it's new location, and has successfully created a backup copy of the destination file, if it existed before.

Specified by:

requestCommit in interface ITwoPhaseTransaction

getDestinationDirectory

public final File getDestinationDirectory()

Get the destination file.

Returns:

The value p_fileDst that was passed to the contructor.

hasBackup

public final boolean hasBackup()

Specified by:

hasBackup in interface ITwoPhaseIOTransaction

Returns:

true if the transaction has left a backup file, or false otherwise (e.g. if the destination file did not exist before the transaction).

getBackup

public final File getBackup()

Specified by:

getBackup in interface ITwoPhaseIOTransaction

Returns:

The directory that was created by the transaction, or null if none was created (e.g. if the destination directory did exist before the transaction).

commit

public void commit()

Description copied from interface: ITwoPhaseTransaction

Commit the transaction.

Specified by:

commit in interface ITwoPhaseTransaction

rollback

public boolean rollback()

Try to rollback the file transaction.

Specified by:

rollback in interface ITwoPhaseTransaction

Returns:

true if the rollback was successful, or false otherwise. In the latter case ITwoPhaseTransaction.getLastError() may give additional information about why the rollback failed, and a backup file may exist then.

getLastError

public final Throwable getLastError()

Specified by:

getLastError in interface ITwoPhaseTransaction

Returns:

The last exception that was caugth during the transaction, or null if no error occurred;

toString

public String toString()

Overrides:

toString in class Object