Package org.apache.pinot.common.utils

Class FileUtils

java.lang.Object

org.apache.pinot.common.utils.FileUtils

public class FileUtils
extends Object

Method Summary

Modifier and Type	Method	Description
static void	close(Closeable... closeables)	Another version of close(Iterable) which allows to pass variable number of closeable resources when the caller doesn't already have them in a collection.
static void	close(Iterable<? extends Closeable> closeables)	Close a collection of Closeable resources This is a utility method to help release multiple Closeable resources in a safe manner without leaking.
static void	moveFileWithOverwrite(File srcFile, File destFile)	Deletes the destination file if it exists then calls org.apache.commons moveFile.
static void	transferBytes(FileChannel src, long position, long count, FileChannel dest)	Transfers bytes from the source file to the destination file.

Methods inherited from class java.lang.Object

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

Method Detail

moveFileWithOverwrite

public static void moveFileWithOverwrite(File srcFile,
                                         File destFile)
                                  throws IOException

Deletes the destination file if it exists then calls org.apache.commons moveFile.

Parameters:

srcFile -

destFile -

Throws:

IOException

transferBytes

public static void transferBytes(FileChannel src,
                                 long position,
                                 long count,
                                 FileChannel dest)
                          throws IOException

Transfers bytes from the source file to the destination file. This method can handle transfer size larger than 2G.

Parameters:

src - Source file channel

position - Position in source file

count - Number of bytes to transfer

dest - Destination file channel

Throws:

IOException

close

public static void close(Iterable<? extends Closeable> closeables)
                  throws IOException

Close a collection of Closeable resources This is a utility method to help release multiple Closeable resources in a safe manner without leaking. As an example if we have a list of Closeable resources, then the following code is prone to leaking 1 or more subsequent resources if an exception is thrown while closing one of them. for (closeable_resource : resources) { closeable_resource.close() } The helper methods provided here do this safely while keeping track of exception(s) raised during close() of each resource and still continuing to close subsequent resources.

Parameters:

closeables - collection of resources to close

Throws:

IOException

close

public static void close(Closeable... closeables)
                  throws IOException

Another version of close(Iterable) which allows to pass variable number of closeable resources when the caller doesn't already have them in a collection.

Parameters:

closeables - one or more resources to close

Throws:

IOException