org.neo4j.io.fs

Class FileUtils

java.lang.Object

org.neo4j.io.fs.FileUtils

public class FileUtils
extends Object

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	FileUtils.FileOperation
static interface	FileUtils.LineListener
static class	FileUtils.MaybeWindowsMemoryMappedFileReleaseProblem

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	OS_IS_WINDOWS

Constructor Summary

Constructors

Constructor and Description
FileUtils()

Method Summary

Methods

Modifier and Type	Method and Description
static void	copyFile(File srcFile, File dstFile)
static void	copyRecursively(File fromDirectory, File toDirectory)
static void	copyRecursively(File fromDirectory, File toDirectory, FileFilter filter)
static boolean	deleteFile(File file)
static void	deleteRecursively(File directory)
static long	directorySize(File directory) Gives the recursive size of all files in a directory.
static FileUtils.LineListener	echo(PrintStream target)
static String	fixSeparatorsInPath(String path)
static File	getMostCanonicalFile(File file)
static void	moveDirectoryContents(File baseDir, File targetDir) Move the contents of one directory into another directory.
static void	moveFile(File toMove, File target) Utility method that moves a file from its current location to the new target location.
static File	moveFileToDirectory(File toMove, File targetDirectory) Utility method that moves a file from its current location to the provided target directory.
static BufferedReader	newBufferedFileReader(File file, Charset charset)
static PrintWriter	newFilePrintWriter(File file, Charset charset)
static File	path(File root, String... path)
static File	path(String root, String... path)
static String	readTextFile(File file, Charset charset)
static void	readTextFile(File file, FileUtils.LineListener listener)
static String	relativePath(File baseDir, File storeFile) Given a directory and a path under it, return filename of the path relative to the directory.
static boolean	renameFile(File srcFile, File renameToFile)
static void	truncateFile(File file, long position)
static void	truncateFile(SeekableByteChannel fileChannel, long position)
static void	windowsSafeIOOperation(FileUtils.FileOperation operation)
static void	writeToFile(File target, String text, boolean append)

Methods inherited from class java.lang.Object

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

Field Detail

OS_IS_WINDOWS

public static final boolean OS_IS_WINDOWS

Constructor Detail

FileUtils

public FileUtils()

Method Detail

deleteRecursively

public static void deleteRecursively(File directory)
                              throws IOException

Throws:

IOException

deleteFile

public static boolean deleteFile(File file)

moveFile

public static void moveFile(File toMove,
            File target)
                     throws IOException

Utility method that moves a file from its current location to the new target location. If rename fails (for example if the target is another disk) a copy/delete will be performed instead. This is not a rename, use renameFile(File, File) instead.

Parameters:

toMove - The File object to move.

target - Target file to move to.

Throws:

IOException

moveFileToDirectory

public static File moveFileToDirectory(File toMove,
                       File targetDirectory)
                                throws IOException

Utility method that moves a file from its current location to the provided target directory. If rename fails (for example if the target is another disk) a copy/delete will be performed instead. This is not a rename, use renameFile(File, File) instead.

Parameters:

toMove - The File object to move.

targetDirectory - the destination directory

Returns:

the new file, null iff the move was unsuccessful

Throws:

IOException

renameFile

public static boolean renameFile(File srcFile,
                 File renameToFile)
                          throws IOException

Throws:

IOException

truncateFile

public static void truncateFile(SeekableByteChannel fileChannel,
                long position)
                         throws IOException

Throws:

IOException

truncateFile

public static void truncateFile(File file,
                long position)
                         throws IOException

Throws:

IOException

fixSeparatorsInPath

public static String fixSeparatorsInPath(String path)

copyFile

public static void copyFile(File srcFile,
            File dstFile)
                     throws IOException

Throws:

IOException

copyRecursively

public static void copyRecursively(File fromDirectory,
                   File toDirectory)
                            throws IOException

Throws:

IOException

copyRecursively

public static void copyRecursively(File fromDirectory,
                   File toDirectory,
                   FileFilter filter)
                            throws IOException

Throws:

IOException

writeToFile

public static void writeToFile(File target,
               String text,
               boolean append)
                        throws IOException

Throws:

IOException

newBufferedFileReader

public static BufferedReader newBufferedFileReader(File file,
                                   Charset charset)
                                            throws FileNotFoundException

Throws:

FileNotFoundException

newFilePrintWriter

public static PrintWriter newFilePrintWriter(File file,
                             Charset charset)
                                      throws FileNotFoundException

Throws:

FileNotFoundException

path

public static File path(String root,
        String... path)

path

public static File path(File root,
        String... path)

windowsSafeIOOperation

public static void windowsSafeIOOperation(FileUtils.FileOperation operation)
                                   throws IOException

Throws:

IOException

moveDirectoryContents

public static void moveDirectoryContents(File baseDir,
                         File targetDir)
                                  throws IOException

Move the contents of one directory into another directory. Allows moving the contents of a directory into a sub-directory of itself.

Throws:

IOException

directorySize

public static long directorySize(File directory)

Gives the recursive size of all files in a directory.

echo

public static FileUtils.LineListener echo(PrintStream target)

readTextFile

public static void readTextFile(File file,
                FileUtils.LineListener listener)
                         throws IOException

Throws:

IOException

readTextFile

public static String readTextFile(File file,
                  Charset charset)
                           throws IOException

Throws:

IOException

relativePath

public static String relativePath(File baseDir,
                  File storeFile)
                           throws IOException

Given a directory and a path under it, return filename of the path relative to the directory.

Parameters:

baseDir - The base directory, containing the storeFile

storeFile - The store file path, must be contained under baseDir

Returns:

The relative path of storeFile to baseDir

Throws:

IOException - As per File.getCanonicalPath()

getMostCanonicalFile

public static File getMostCanonicalFile(File file)