FilePath (H2 Database Engine 2.0.0 API)

java.lang.Object
- org.h2.store.fs.FilePath

直接已知子类:

FilePathDisk, FilePathMem, FilePathNioMem, FilePathWrapper, FilePathZip
```
public abstract class FilePath
extends Object
```
A path to a file. It similar to the Java 7 java.nio.file.Path, but simpler, and works with older versions of Java. It also implements the relevant methods found in java.nio.file.FileSystem and FileSystems

字段概要

字段
限定符和类型字段和说明

String name
The complete path (which may be absolute or relative, depending on the file system).

字段
限定符和类型	字段和说明
`String`	`name` The complete path (which may be absolute or relative, depending on the file system).

构造器概要

构造器
构造器和说明

FilePath()

构造器
构造器和说明
`FilePath()`

方法概要

所有方法静态方法实例方法抽象方法具体方法
限定符和类型	方法和说明
`abstract boolean`	`canWrite()` Check if the file is writable.
`abstract void`	`createDirectory()` Create a directory (all required parent directories already exist).
`abstract boolean`	`createFile()` Create a new file.
`FilePath`	`createTempFile(String suffix, boolean inTempDir)` Create a new temporary file.
`abstract void`	`delete()` Delete a file or directory if it exists.
`abstract boolean`	`exists()` Checks if a file exists.
`static FilePath`	`get(String path)` Get the file path object for the given path.
`String`	`getName()` Get the file or directory name (the last element of the path).
`abstract FilePath`	`getParent()` Get the parent directory of a file or directory.
`abstract FilePath`	`getPath(String path)` Convert a file to a path.
`abstract String`	`getScheme()` Get the scheme (prefix) for this file provider.
`abstract boolean`	`isAbsolute()` Check if the file name includes a path.
`abstract boolean`	`isDirectory()` Check if it is a file or a directory.
`abstract boolean`	`isRegularFile()` Check if it is a regular file.
`abstract long`	`lastModified()` Get the last modified date of a file
`abstract void`	`moveTo(FilePath newName, boolean atomicReplace)` Rename a file if this is allowed.
`abstract List<FilePath>`	`newDirectoryStream()` List the files and directories in the given directory.
`static OutputStream`	`newFileChannelOutputStream(FileChannel channel, boolean append)` Create a new output stream from the channel.
`InputStream`	`newInputStream()` Create an input stream to read from the file.
`OutputStream`	`newOutputStream(boolean append)` Create an output stream to write into the file.
`abstract FileChannel`	`open(String mode)` Open a random access file object.
`static void`	`register(FilePath provider)` Register a file provider.
`abstract boolean`	`setReadOnly()` Disable the ability to write.
`abstract long`	`size()` Get the size of a file in bytes
`abstract FilePath`	`toRealPath()` Normalize a file name.
`String`	`toString()` Get the string representation.
`static void`	`unregister(FilePath provider)` Unregister a file provider.
`FilePath`	`unwrap()` Get the unwrapped file name (without wrapper prefixes if wrapping / delegating file systems are used).

从类继承的方法 java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- 字段详细资料
  - name
```
public String name
```
    The complete path (which may be absolute or relative, depending on the file system).
- 构造器详细资料
  - FilePath
```
public FilePath()
```
- 方法详细资料
  - get
```
public static FilePath get(String path)
```
    Get the file path object for the given path. Windows-style '\' is replaced with '/'.
    
    参数:
    
    path - the path
    
    返回:
    
    the file path object
  - register
```
public static void register(FilePath provider)
```
    Register a file provider.
    
    参数:
    
    provider - the file provider
  - unregister
```
public static void unregister(FilePath provider)
```
    Unregister a file provider.
    
    参数:
    
    provider - the file provider
  - size
```
public abstract long size()
```
    Get the size of a file in bytes
    
    返回:
    
    the size in bytes
  - moveTo
```
public abstract void moveTo(FilePath newName,
                            boolean atomicReplace)
```
    Rename a file if this is allowed.
    
    参数:
    
    newName - 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
  - createFile
```
public abstract boolean createFile()
```
    Create a new file.
    
    返回:
    
    true if creating was successful
  - exists
```
public abstract boolean exists()
```
    Checks if a file exists.
    
    返回:
    
    true if it exists
  - delete
```
public abstract void delete()
```
    Delete a file or directory if it exists. Directories may only be deleted if they are empty.
  - newDirectoryStream
```
public abstract List<FilePath> newDirectoryStream()
```
    List the files and directories in the given directory.
    
    返回:
    
    the list of fully qualified file names
  - toRealPath
```
public abstract FilePath toRealPath()
```
    Normalize a file name.
    
    返回:
    
    the normalized file name
  - getParent
```
public abstract FilePath getParent()
```
    Get the parent directory of a file or directory.
    
    返回:
    
    the parent directory name
  - isDirectory
```
public abstract boolean isDirectory()
```
    Check if it is a file or a directory.
    
    返回:
    
    true if it is a directory
  - isRegularFile
```
public abstract boolean isRegularFile()
```
    Check if it is a regular file.
    
    返回:
    
    true if it is a regular file
  - isAbsolute
```
public abstract boolean isAbsolute()
```
    Check if the file name includes a path.
    
    返回:
    
    if the file name is absolute
  - lastModified
```
public abstract long lastModified()
```
    Get the last modified date of a file
    
    返回:
    
    the last modified date
  - canWrite
```
public abstract boolean canWrite()
```
    Check if the file is writable.
    
    返回:
    
    if the file is writable
  - createDirectory
```
public abstract void createDirectory()
```
    Create a directory (all required parent directories already exist).
  - getName
```
public String getName()
```
    Get the file or directory name (the last element of the path).
    
    返回:
    
    the last element of the path
  - newOutputStream
```
public OutputStream newOutputStream(boolean append)
                             throws IOException
```
    Create an output stream to write into the file.
    
    参数:
    
    append - if true, the file will grow, if false, the file will be truncated first
    
    返回:
    
    the output stream
    
    抛出:
    
    IOException - If an I/O error occurs
  - newFileChannelOutputStream
```
public static final OutputStream newFileChannelOutputStream(FileChannel channel,
                                                            boolean append)
                                                     throws IOException
```
    Create a new output stream from the channel.
    
    参数:
    
    channel - the file channel
    
    append - true for append mode, false for truncate and overwrite
    
    返回:
    
    the output stream
    
    抛出:
    
    IOException - on I/O exception
  - open
```
public abstract FileChannel open(String mode)
                          throws IOException
```
    Open a random access file object.
    
    参数:
    
    mode - the access mode. Supported are r, rw, rws, rwd
    
    返回:
    
    the file object
    
    抛出:
    
    IOException - If an I/O error occurs
  - newInputStream
```
public InputStream newInputStream()
                           throws IOException
```
    Create an input stream to read from the file.
    
    返回:
    
    the input stream
    
    抛出:
    
    IOException - If an I/O error occurs
  - setReadOnly
```
public abstract boolean setReadOnly()
```
    Disable the ability to write.
    
    返回:
    
    true if the call was successful
  - createTempFile
```
public FilePath createTempFile(String suffix,
                               boolean inTempDir)
                        throws IOException
```
    Create a new temporary file.
    
    参数:
    
    suffix - the suffix
    
    inTempDir - if the file should be stored in the temporary directory
    
    返回:
    
    the name of the created file
    
    抛出:
    
    IOException - on failure
  - toString
```
public String toString()
```
    Get the string representation. The returned string can be used to construct a new object.
    
    覆盖:
    
    toString 在类中 Object
    
    返回:
    
    the path as a string
  - getScheme
```
public abstract String getScheme()
```
    Get the scheme (prefix) for this file provider. This is similar to java.nio.file.spi.FileSystemProvider.getScheme.
    
    返回:
    
    the scheme
  - getPath
```
public abstract FilePath getPath(String path)
```
    Convert a file to a path. This is similar to java.nio.file.spi.FileSystemProvider.getPath, but may return an object even if the scheme doesn't match in case of the default file provider.
    
    参数:
    
    path - the path
    
    返回:
    
    the file path object
  - unwrap
```
public FilePath unwrap()
```
    Get the unwrapped file name (without wrapper prefixes if wrapping / delegating file systems are used).
    
    返回:
    
    the unwrapped path

类 FilePath

字段概要

构造器概要

方法概要

从类继承的方法 java.lang.Object

字段详细资料

name

构造器详细资料

FilePath

方法详细资料

get

register

unregister

size

moveTo

createFile

exists

delete

newDirectoryStream

toRealPath

getParent

isDirectory

isRegularFile

isAbsolute

lastModified

canWrite

createDirectory

getName

newOutputStream

newFileChannelOutputStream

open

newInputStream

setReadOnly

createTempFile

toString

getScheme

getPath

unwrap