FilePathWrapper (H2 Database Engine wt-1.0.1 API)

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

直接已知子类:

FilePathCache, FilePathEncrypt, FilePathNio, FilePathRec, FilePathRetryOnInterrupt, FilePathSplit
```
public abstract class FilePathWrapper
extends FilePath
```
The base class for wrapping / delegating file systems such as the split file system.

字段概要
- 从类继承的字段 org.h2.store.fs.FilePath
  name

构造器概要

构造器
构造器和说明

FilePathWrapper()

构造器
构造器和说明
`FilePathWrapper()`

方法概要

所有方法实例方法具体方法
限定符和类型	方法和说明
`boolean`	`canWrite()` Check if the file is writable.
`void`	`createDirectory()` Create a directory (all required parent directories already exist).
`boolean`	`createFile()` Create a new file.
`FilePath`	`createTempFile(String suffix, boolean deleteOnExit, boolean inTempDir)` Create a new temporary file.
`void`	`delete()` Delete a file or directory if it exists.
`boolean`	`exists()` Checks if a file exists.
`protected FilePath`	`getBase()`
`FilePath`	`getParent()` Get the parent directory of a file or directory.
`FilePathWrapper`	`getPath(String path)` Convert a file to a path.
`protected String`	`getPrefix()`
`boolean`	`isAbsolute()` Check if the file name includes a path.
`boolean`	`isDirectory()` Check if it is a file or a directory.
`long`	`lastModified()` Get the last modified date of a file
`void`	`moveTo(FilePath newName, boolean atomicReplace)` Rename a file if this is allowed.
`List<FilePath>`	`newDirectoryStream()` List the files and directories in the given directory.
`InputStream`	`newInputStream()` Create an input stream to read from the file.
`OutputStream`	`newOutputStream(boolean append)` Create an output stream to write into the file.
`FileChannel`	`open(String mode)` Open a random access file object.
`boolean`	`setReadOnly()` Disable the ability to write.
`long`	`size()` Get the size of a file in bytes
`FilePath`	`toRealPath()` Normalize a file name.
`FilePath`	`unwrap()` Get the unwrapped file name (without wrapper prefixes if wrapping / delegating file systems are used).
`protected FilePath`	`unwrap(String path)` Get the base path for the given wrapped path.
`FilePathWrapper`	`wrap(FilePath base)` Create a wrapped path instance for the given base path.

从类继承的方法 org.h2.store.fs.FilePath
get, getName, getNextTempFileNamePart, getScheme, register, toString, unregister

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

- 构造器详细资料
  - FilePathWrapper
```
public FilePathWrapper()
```
- 方法详细资料
  - getPath
```
public FilePathWrapper getPath(String path)
```
    从类复制的说明: FilePath
    
    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 the default file provider.
    
    指定者:
    
    getPath 在类中 FilePath
    
    参数:
    
    path - the path
    
    返回:
    
    the file path object
  - wrap
```
public FilePathWrapper wrap(FilePath base)
```
    Create a wrapped path instance for the given base path.
    
    参数:
    
    base - the base path
    
    返回:
    
    the wrapped path
  - unwrap
```
public FilePath unwrap()
```
    从类复制的说明: FilePath
    
    Get the unwrapped file name (without wrapper prefixes if wrapping / delegating file systems are used).
    
    覆盖:
    
    unwrap 在类中 FilePath
    
    返回:
    
    the unwrapped path
  - getPrefix
```
protected String getPrefix()
```
  - unwrap
```
protected FilePath unwrap(String path)
```
    Get the base path for the given wrapped path.
    
    参数:
    
    path - the path including the scheme prefix
    
    返回:
    
    the base file path
  - getBase
```
protected FilePath getBase()
```
  - canWrite
```
public boolean canWrite()
```
    从类复制的说明: FilePath
    
    Check if the file is writable.
    
    指定者:
    
    canWrite 在类中 FilePath
    
    返回:
    
    if the file is writable
  - createDirectory
```
public void createDirectory()
```
    从类复制的说明: FilePath
    
    Create a directory (all required parent directories already exist).
    
    指定者:
    
    createDirectory 在类中 FilePath
  - createFile
```
public boolean createFile()
```
    从类复制的说明: FilePath
    
    Create a new file.
    
    指定者:
    
    createFile 在类中 FilePath
    
    返回:
    
    true if creating was successful
  - delete
```
public void delete()
```
    从类复制的说明: FilePath
    
    Delete a file or directory if it exists. Directories may only be deleted if they are empty.
    
    指定者:
    
    delete 在类中 FilePath
  - exists
```
public boolean exists()
```
    从类复制的说明: FilePath
    
    Checks if a file exists.
    
    指定者:
    
    exists 在类中 FilePath
    
    返回:
    
    true if it exists
  - getParent
```
public FilePath getParent()
```
    从类复制的说明: FilePath
    
    Get the parent directory of a file or directory.
    
    指定者:
    
    getParent 在类中 FilePath
    
    返回:
    
    the parent directory name
  - isAbsolute
```
public boolean isAbsolute()
```
    从类复制的说明: FilePath
    
    Check if the file name includes a path.
    
    指定者:
    
    isAbsolute 在类中 FilePath
    
    返回:
    
    if the file name is absolute
  - isDirectory
```
public boolean isDirectory()
```
    从类复制的说明: FilePath
    
    Check if it is a file or a directory.
    
    指定者:
    
    isDirectory 在类中 FilePath
    
    返回:
    
    true if it is a directory
  - lastModified
```
public long lastModified()
```
    从类复制的说明: FilePath
    
    Get the last modified date of a file
    
    指定者:
    
    lastModified 在类中 FilePath
    
    返回:
    
    the last modified date
  - toRealPath
```
public FilePath toRealPath()
```
    从类复制的说明: FilePath
    
    Normalize a file name.
    
    指定者:
    
    toRealPath 在类中 FilePath
    
    返回:
    
    the normalized file name
  - newDirectoryStream
```
public List<FilePath> newDirectoryStream()
```
    从类复制的说明: FilePath
    
    List the files and directories in the given directory.
    
    指定者:
    
    newDirectoryStream 在类中 FilePath
    
    返回:
    
    the list of fully qualified file names
  - moveTo
```
public void moveTo(FilePath newName,
                   boolean atomicReplace)
```
    从类复制的说明: FilePath
    
    Rename a file if this is allowed.
    
    指定者:
    
    moveTo 在类中 FilePath
    
    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
  - newInputStream
```
public InputStream newInputStream()
                           throws IOException
```
    从类复制的说明: FilePath
    
    Create an input stream to read from the file.
    
    指定者:
    
    newInputStream 在类中 FilePath
    
    返回:
    
    the input stream
    
    抛出:
    
    IOException
  - newOutputStream
```
public OutputStream newOutputStream(boolean append)
                             throws IOException
```
    从类复制的说明: FilePath
    
    Create an output stream to write into the file.
    
    指定者:
    
    newOutputStream 在类中 FilePath
    
    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
  - open
```
public FileChannel open(String mode)
                 throws IOException
```
    从类复制的说明: FilePath
    
    Open a random access file object.
    
    指定者:
    
    open 在类中 FilePath
    
    参数:
    
    mode - the access mode. Supported are r, rw, rws, rwd
    
    返回:
    
    the file object
    
    抛出:
    
    IOException
  - setReadOnly
```
public boolean setReadOnly()
```
    从类复制的说明: FilePath
    
    Disable the ability to write.
    
    指定者:
    
    setReadOnly 在类中 FilePath
    
    返回:
    
    true if the call was successful
  - size
```
public long size()
```
    从类复制的说明: FilePath
    
    Get the size of a file in bytes
    
    指定者:
    
    size 在类中 FilePath
    
    返回:
    
    the size in bytes
  - createTempFile
```
public FilePath createTempFile(String suffix,
                               boolean deleteOnExit,
                               boolean inTempDir)
                        throws IOException
```
    从类复制的说明: FilePath
    
    Create a new temporary file.
    
    覆盖:
    
    createTempFile 在类中 FilePath
    
    参数:
    
    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
    
    返回:
    
    the name of the created file
    
    抛出:
    
    IOException

类 FilePathWrapper

字段概要

从类继承的字段 org.h2.store.fs.FilePath

构造器概要

方法概要

从类继承的方法 org.h2.store.fs.FilePath

从类继承的方法 java.lang.Object

构造器详细资料

FilePathWrapper

方法详细资料

getPath

wrap

unwrap

getPrefix

unwrap

getBase

canWrite

createDirectory

createFile

delete

exists

getParent

isAbsolute

isDirectory

lastModified

toRealPath

newDirectoryStream

moveTo

newInputStream

newOutputStream

open

setReadOnly

size

createTempFile