org.h2.store.fs
Class FileSystemSplit

java.lang.Object
  org.h2.store.fs.FileSystem
      org.h2.store.fs.FileSystemSplit

public class FileSystemSplit
extends FileSystem

A file system that may split files into multiple smaller files.

Field Summary

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

PREFIX_MEMORY, PREFIX_MEMORY_LZF, PREFIX_NIO, PREFIX_NIO_MAPPED, PREFIX_SPLIT, PREFIX_ZIP

Constructor Summary

FileSystemSplit()

Method Summary

boolean	canWrite(java.lang.String fileName) Check if the file is writable.
void	copy(java.lang.String original, java.lang.String copy) Copy a file from one directory to another, or to another file.
void	createDirs(java.lang.String fileName) Create all required directories that are required for this file.
boolean	createNewFile(java.lang.String fileName) Create a new file.
java.lang.String	createTempFile(java.lang.String prefix, java.lang.String suffix, boolean deleteOnExit, boolean inTempDir) Create a new temporary file.
void	delete(java.lang.String fileName) Delete a file.
void	deleteRecursive(java.lang.String directory, boolean tryOnly) Delete a directory or file and all subdirectories and files.
boolean	exists(java.lang.String fileName) Checks if a file exists.
boolean	fileStartsWith(java.lang.String fileName, java.lang.String prefix) Check if a file starts with a given prefix.
java.lang.String	getAbsolutePath(java.lang.String fileName) Get the absolute file name.
java.lang.String	getFileName(java.lang.String name) Get the file name (without directory part).
static FileSystemSplit	getInstance()
long	getLastModified(java.lang.String fileName) Get the last modified date of a file
java.lang.String	getParent(java.lang.String fileName) Get the parent directory of a file or directory.
boolean	isAbsolute(java.lang.String fileName) Check if the file name includes a path.
boolean	isDirectory(java.lang.String fileName) Check if it is a file or a directory.
boolean	isReadOnly(java.lang.String fileName) Check if a file is read-only.
long	length(java.lang.String fileName) Get the length of a file.
java.lang.String[]	listFiles(java.lang.String directory) List the files in the given directory.
java.lang.String	normalize(java.lang.String fileName) Normalize a file name.
java.io.InputStream	openFileInputStream(java.lang.String fileName) Create an input stream to read from the file.
FileObject	openFileObject(java.lang.String fileName, java.lang.String mode) Open a random access file object.
java.io.OutputStream	openFileOutputStream(java.lang.String fileName, boolean append) Create an output stream to write into the file.
void	rename(java.lang.String oldName, java.lang.String newName) Rename a file if this is allowed.
boolean	tryDelete(java.lang.String fileName) Try to delete a file.

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

accepts, getInstance, mkdirs, register, unregister

Methods inherited from class java.lang.Object

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

Constructor Detail

FileSystemSplit

public FileSystemSplit()

Method Detail

getInstance

public static FileSystemSplit getInstance()

canWrite

public boolean canWrite(java.lang.String fileName)

Description copied from class: FileSystem

Check if the file is writable.

Specified by:

canWrite in class FileSystem

Parameters:

fileName - the file name

Returns:

if the file is writable

copy

public void copy(java.lang.String original,
                 java.lang.String copy)
          throws java.sql.SQLException

Description copied from class: FileSystem

Copy a file from one directory to another, or to another file.

Specified by:

copy in class FileSystem

Parameters:

original - the original file name

copy - the file name of the copy

Throws:

java.sql.SQLException

createDirs

public void createDirs(java.lang.String fileName)
                throws java.sql.SQLException

Description copied from class: FileSystem

Create all required directories that are required for this file.

Specified by:

createDirs in class FileSystem

Parameters:

fileName - the file name (not directory name)

Throws:

java.sql.SQLException

createNewFile

public boolean createNewFile(java.lang.String fileName)
                      throws java.sql.SQLException

Description copied from class: FileSystem

Create a new file.

Specified by:

createNewFile in class FileSystem

Parameters:

fileName - the file name

Returns:

true if creating was successful

Throws:

java.sql.SQLException

createTempFile

public java.lang.String createTempFile(java.lang.String prefix,
                                       java.lang.String suffix,
                                       boolean deleteOnExit,
                                       boolean inTempDir)
                                throws java.io.IOException

Description copied from class: FileSystem

Create a new temporary file.

Specified by:

createTempFile in class FileSystem

Parameters:

prefix - the prefix of the file name (including directory name if required)

suffix - the suffix

deleteOnExit - if the file should be deleted when the virtual machine exists

inTempDir - if the file should be stored in the temporary directory

Returns:

the name of the created file

Throws:

java.io.IOException

delete

public void delete(java.lang.String fileName)
            throws java.sql.SQLException

Description copied from class: FileSystem

Delete a file.

Specified by:

delete in class FileSystem

Parameters:

fileName - the file name

Throws:

java.sql.SQLException

deleteRecursive

public void deleteRecursive(java.lang.String directory,
                            boolean tryOnly)
                     throws java.sql.SQLException

Description copied from class: FileSystem

Delete a directory or file and all subdirectories and files.

Specified by:

deleteRecursive in class FileSystem

Parameters:

directory - the directory

tryOnly - whether errors should be ignored

Throws:

java.sql.SQLException

exists

public boolean exists(java.lang.String fileName)

Description copied from class: FileSystem

Checks if a file exists.

Specified by:

exists in class FileSystem

Parameters:

fileName - the file name

Returns:

true if it exists

fileStartsWith

public boolean fileStartsWith(java.lang.String fileName,
                              java.lang.String prefix)

Description copied from class: FileSystem

Check if a file starts with a given prefix.

Specified by:

fileStartsWith in class FileSystem

Parameters:

fileName - the complete file name

prefix - the prefix

Returns:

true if it starts with the prefix

getAbsolutePath

public java.lang.String getAbsolutePath(java.lang.String fileName)

Description copied from class: FileSystem

Get the absolute file name.

Specified by:

getAbsolutePath in class FileSystem

Parameters:

fileName - the file name

Returns:

the absolute file name

getFileName

public java.lang.String getFileName(java.lang.String name)
                             throws java.sql.SQLException

Description copied from class: FileSystem

Get the file name (without directory part).

Specified by:

getFileName in class FileSystem

Parameters:

name - the directory and file name

Returns:

just the file name

Throws:

java.sql.SQLException

getLastModified

public long getLastModified(java.lang.String fileName)

Description copied from class: FileSystem

Get the last modified date of a file

Specified by:

getLastModified in class FileSystem

Parameters:

fileName - the file name

Returns:

the last modified date

getParent

public java.lang.String getParent(java.lang.String fileName)

Description copied from class: FileSystem

Get the parent directory of a file or directory.

Specified by:

getParent in class FileSystem

Parameters:

fileName - the file or directory name

Returns:

the parent directory name

isAbsolute

public boolean isAbsolute(java.lang.String fileName)

Description copied from class: FileSystem

Check if the file name includes a path.

Specified by:

isAbsolute in class FileSystem

Parameters:

fileName - the file name

Returns:

if the file name is absolute

isDirectory

public boolean isDirectory(java.lang.String fileName)

Description copied from class: FileSystem

Check if it is a file or a directory.

Specified by:

isDirectory in class FileSystem

Parameters:

fileName - the file or directory name

Returns:

true if it is a directory

isReadOnly

public boolean isReadOnly(java.lang.String fileName)

Description copied from class: FileSystem

Check if a file is read-only.

Specified by:

isReadOnly in class FileSystem

Parameters:

fileName - the file name

Returns:

if it is read only

length

public long length(java.lang.String fileName)

Description copied from class: FileSystem

Get the length of a file.

Specified by:

length in class FileSystem

Parameters:

fileName - the file name

Returns:

the length in bytes

listFiles

public java.lang.String[] listFiles(java.lang.String directory)
                             throws java.sql.SQLException

Description copied from class: FileSystem

List the files in the given directory.

Specified by:

listFiles in class FileSystem

Parameters:

directory - the directory

Returns:

the list of fully qualified file names

Throws:

java.sql.SQLException

normalize

public java.lang.String normalize(java.lang.String fileName)
                           throws java.sql.SQLException

Description copied from class: FileSystem

Normalize a file name.

Specified by:

normalize in class FileSystem

Parameters:

fileName - the file name

Returns:

the normalized file name

Throws:

java.sql.SQLException

openFileInputStream

public java.io.InputStream openFileInputStream(java.lang.String fileName)
                                        throws java.io.IOException

Description copied from class: FileSystem

Create an input stream to read from the file.

Specified by:

openFileInputStream in class FileSystem

Parameters:

fileName - the file name

Returns:

the input stream

Throws:

java.io.IOException

openFileObject

public FileObject openFileObject(java.lang.String fileName,
                                 java.lang.String mode)
                          throws java.io.IOException

Description copied from class: FileSystem

Open a random access file object.

Specified by:

openFileObject in class FileSystem

Parameters:

fileName - the file name

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

Returns:

the file object

Throws:

java.io.IOException

openFileOutputStream

public java.io.OutputStream openFileOutputStream(java.lang.String fileName,
                                                 boolean append)
                                          throws java.sql.SQLException

Description copied from class: FileSystem

Create an output stream to write into the file.

Specified by:

openFileOutputStream in class FileSystem

Parameters:

fileName - the file name

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

Returns:

the output stream

Throws:

java.sql.SQLException

rename

public void rename(java.lang.String oldName,
                   java.lang.String newName)
            throws java.sql.SQLException

Description copied from class: FileSystem

Rename a file if this is allowed.

Specified by:

rename in class FileSystem

Parameters:

oldName - the old fully qualified file name

newName - the new fully qualified file name

Throws:

java.sql.SQLException

tryDelete

public boolean tryDelete(java.lang.String fileName)

Description copied from class: FileSystem

Try to delete a file.

Specified by:

tryDelete in class FileSystem

Parameters:

fileName - the file name

Returns:

true if it could be deleted