org.h2.store.fs
Class FileSystemDiskNio

java.lang.Object
  org.h2.store.fs.FileSystem
      org.h2.store.fs.FileSystemDisk
          org.h2.store.fs.FileSystemDiskNio

Direct Known Subclasses:

FileSystemDiskNioMapped

public class FileSystemDiskNio
extends FileSystemDisk

This file system stores files on disk and uses java.nio to access the files. This class uses FileChannel.

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

FileSystemDiskNio()

Method Summary

java.lang.String	createTempFile(java.lang.String name, java.lang.String suffix, boolean deleteOnExit, boolean inTempDir) Create a new temporary file.
java.lang.String	getAbsolutePath(java.lang.String fileName) Get the absolute file name.
static FileSystemDisk	getInstance()
java.lang.String	getParent(java.lang.String fileName) Get the parent directory of a file or directory.
protected java.lang.String	getPrefix() Get the prefix for this file system.
java.lang.String[]	listFiles(java.lang.String path) List the files in the given directory.
java.lang.String	normalize(java.lang.String fileName) Normalize a file name.
protected FileObject	open(java.lang.String fileName, java.lang.String mode) Try to open a file with this name and mode.
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.
protected java.lang.String	translateFileName(java.lang.String fileName) Translate the file name to the native format.

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

canWrite, copy, createDirs, createNewFile, delete, deleteRecursive, exists, fileStartsWith, freeMemoryAndFinalize, getFileName, getLastModified, isAbsolute, isDirectory, isReadOnly, length, openFileOutputStream, rename, trace, tryDelete

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

FileSystemDiskNio

public FileSystemDiskNio()

Method Detail

getInstance

public static FileSystemDisk getInstance()

createTempFile

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

Description copied from class: FileSystem

Create a new temporary file.

Overrides:

createTempFile in class FileSystemDisk

Parameters:

name - 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

translateFileName

protected java.lang.String translateFileName(java.lang.String fileName)

Description copied from class: FileSystemDisk

Translate the file name to the native format. This will expand the home directory (~).

Overrides:

translateFileName in class FileSystemDisk

Parameters:

fileName - the file name

Returns:

the native file name

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.

Overrides:

openFileInputStream in class FileSystemDisk

Parameters:

fileName - the file name

Returns:

the input stream

Throws:

java.io.IOException

normalize

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

Description copied from class: FileSystem

Normalize a file name.

Overrides:

normalize in class FileSystemDisk

Parameters:

fileName - the file name

Returns:

the normalized file name

Throws:

java.sql.SQLException

listFiles

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

Description copied from class: FileSystem

List the files in the given directory.

Overrides:

listFiles in class FileSystemDisk

Parameters:

path - the directory

Returns:

the list of fully qualified file names

Throws:

java.sql.SQLException

getParent

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

Description copied from class: FileSystem

Get the parent directory of a file or directory.

Overrides:

getParent in class FileSystemDisk

Parameters:

fileName - the file or directory name

Returns:

the parent directory name

getAbsolutePath

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

Description copied from class: FileSystem

Get the absolute file name.

Overrides:

getAbsolutePath in class FileSystemDisk

Parameters:

fileName - the file name

Returns:

the absolute file name

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.

Overrides:

openFileObject in class FileSystemDisk

Parameters:

fileName - the file name

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

Returns:

the file object

Throws:

java.io.IOException

getPrefix

protected java.lang.String getPrefix()

Get the prefix for this file system.

Returns:

the prefix

open

protected FileObject open(java.lang.String fileName,
                          java.lang.String mode)
                   throws java.io.IOException

Try to open a file with this name and mode.

Parameters:

fileName - the file name

mode - the open mode

Returns:

the file object

Throws:

java.io.IOException - if opening fails