com.atlassian.jira.application.install

Class ReversibleFileOperations

java.lang.Object

com.atlassian.jira.application.install.ReversibleFileOperations

All Implemented Interfaces:

AutoCloseable

public class ReversibleFileOperations
extends Object
implements AutoCloseable

This class is intended to be used with try-with-resources. You have to explicitly commit operation by calling commit(). All uncomitted operations will be reverted when try block is finalized. ie.:

  try (ReversibleFileOperations reversibleFileOperations = new ReversibleFileOperations())
 {
    reversibleFileOperations.fileDelete(file1);
    reversibleFileOperations.fileDelete(file2);
    reversibleFileOperaions.commit()
 } // exception will revert all not commited operations
 
 

Since:

v6.5

Constructor Summary

Constructors

Constructor and Description
ReversibleFileOperations()

Method Summary

Modifier and Type	Method and Description
void	close()
void	commit() Commits all pending operations.
void	fileDelete(File file) Call this to perform deletion operation on file.
void	removeOnRollback(File file) Call this right after you created a file.

Methods inherited from class java.lang.Object

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

Constructor Detail

ReversibleFileOperations

public ReversibleFileOperations()

Method Detail

removeOnRollback

public void removeOnRollback(File file)

Call this right after you created a file. By itself it doesn't perform any operations on filesystem on call and on commit. It will delete created file on revert.

fileDelete

public void fileDelete(File file)
                throws IOException

Call this to perform deletion operation on file. It will rename given file to some backup file. On commit it will delete backup file and on revert it rename backup file back to its original name. If given file doesn't exist operation is ignored.

Throws:

IOException

commit

public void commit()
            throws IOException

Commits all pending operations. Not commited operation will be reverted on close.

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Throws:

IOException