Package org.h2.store.fs.split

Class FilePathSplit

java.lang.Object

org.h2.store.fs.FilePath

org.h2.store.fs.FilePathWrapper

org.h2.store.fs.split.FilePathSplit

public class FilePathSplit
extends FilePathWrapper

A file system that may split files into multiple smaller files. (required for a FAT32 because it only support files up to 2 GB).

Field Summary

Fields

Modifier and Type	Field	Description
private static java.lang.String	PART_SUFFIX

Fields inherited from class org.h2.store.fs.FilePath

name

Constructor Summary

Constructors

Constructor	Description
FilePathSplit()

Method Summary

Modifier and Type	Method	Description
private void	closeAndThrow(int id, java.nio.channels.FileChannel[] array, java.nio.channels.FileChannel o, long maxLength)
void	delete()	Delete a file or directory if it exists.
(package private) FilePath	getBase(int id)	Get the file name of a part file.
private long	getDefaultMaxLength()
private java.lang.String	getName(int id)
protected java.lang.String	getPrefix()
java.lang.String	getScheme()	Get the scheme (prefix) for this file provider.
long	lastModified()	Get the last modified date of a file
void	moveTo(FilePath path, boolean atomicReplace)	Rename a file if this is allowed.
java.util.ArrayList<FilePath>	newDirectoryStream()	List the files and directories in the given directory.
java.io.InputStream	newInputStream()	Create an input stream to read from the file.
java.io.OutputStream	newOutputStream(boolean append)	Create an output stream to write into the file.
java.nio.channels.FileChannel	open(java.lang.String mode)	Open a random access file object.
private java.lang.String[]	parse(java.lang.String fileName)	Split the file name into size and base file name.
boolean	setReadOnly()	Disable the ability to write.
long	size()	Get the size of a file in bytes
FilePath	unwrap(java.lang.String fileName)	Get the base path for the given wrapped path.

Methods inherited from class org.h2.store.fs.FilePathWrapper

canWrite, createDirectory, createFile, createTempFile, exists, getBase, getParent, getPath, isAbsolute, isDirectory, toRealPath, unwrap, wrap

Methods inherited from class org.h2.store.fs.FilePath

get, getName, newFileChannelOutputStream, register, toString, unregister

Methods inherited from class java.lang.Object

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

Field Detail

PART_SUFFIX

private static final java.lang.String PART_SUFFIX

See Also:

Constant Field Values

Constructor Detail

FilePathSplit

public FilePathSplit()

Method Detail

getPrefix

protected java.lang.String getPrefix()

Overrides:

getPrefix in class FilePathWrapper

unwrap

public FilePath unwrap(java.lang.String fileName)

Description copied from class: FilePathWrapper

Get the base path for the given wrapped path.

Overrides:

unwrap in class FilePathWrapper

Parameters:

fileName - the path including the scheme prefix

Returns:

the base file path

setReadOnly

public boolean setReadOnly()

Description copied from class: FilePath

Disable the ability to write.

Overrides:

setReadOnly in class FilePathWrapper

Returns:

true if the call was successful

delete

public void delete()

Description copied from class: FilePath

Delete a file or directory if it exists. Directories may only be deleted if they are empty.

Overrides:

delete in class FilePathWrapper

lastModified

public long lastModified()

Description copied from class: FilePath

Get the last modified date of a file

Overrides:

lastModified in class FilePathWrapper

Returns:

the last modified date

size

public long size()

Description copied from class: FilePath

Get the size of a file in bytes

Overrides:

size in class FilePathWrapper

Returns:

the size in bytes

newDirectoryStream

public java.util.ArrayList<FilePath> newDirectoryStream()

Description copied from class: FilePath

List the files and directories in the given directory.

Overrides:

newDirectoryStream in class FilePathWrapper

Returns:

the list of fully qualified file names

newInputStream

public java.io.InputStream newInputStream()
                                   throws java.io.IOException

Description copied from class: FilePath

Create an input stream to read from the file.

Overrides:

newInputStream in class FilePathWrapper

Returns:

the input stream

Throws:

java.io.IOException - If an I/O error occurs

open

public java.nio.channels.FileChannel open(java.lang.String mode)
                                   throws java.io.IOException

Description copied from class: FilePath

Open a random access file object.

Overrides:

open in class FilePathWrapper

Parameters:

mode - the access mode. Supported are r, rw, rws, rwd

Returns:

the file object

Throws:

java.io.IOException - If an I/O error occurs

getDefaultMaxLength

private long getDefaultMaxLength()

closeAndThrow

private void closeAndThrow(int id,
                           java.nio.channels.FileChannel[] array,
                           java.nio.channels.FileChannel o,
                           long maxLength)
                    throws java.io.IOException

Throws:

java.io.IOException

newOutputStream

public java.io.OutputStream newOutputStream(boolean append)
                                     throws java.io.IOException

Description copied from class: FilePath

Create an output stream to write into the file.

Overrides:

newOutputStream in class FilePathWrapper

Parameters:

append - if true, the file will grow, if false, the file will be truncated first

Returns:

the output stream

Throws:

java.io.IOException - If an I/O error occurs

moveTo

public void moveTo(FilePath path,
                   boolean atomicReplace)

Description copied from class: FilePath

Rename a file if this is allowed.

Overrides:

moveTo in class FilePathWrapper

Parameters:

path - the new fully qualified file name

atomicReplace - whether the move should be atomic, and the target file should be replaced if it exists and replacing is possible

parse

private java.lang.String[] parse(java.lang.String fileName)

Split the file name into size and base file name.

Parameters:

fileName - the file name

Returns:

an array with size and file name

getBase

FilePath getBase(int id)

Get the file name of a part file.

Parameters:

id - the part id

Returns:

the file name including the part id

getName

private java.lang.String getName(int id)

getScheme

public java.lang.String getScheme()

Description copied from class: FilePath

Get the scheme (prefix) for this file provider. This is similar to java.nio.file.spi.FileSystemProvider.getScheme.

Specified by:

getScheme in class FilePath

Returns:

the scheme