FilePathUnstable

java.lang.Object
- org.h2.store.fs.FilePath
- - org.h2.store.fs.FilePathWrapper
  - - org.h2.test.utils.FilePathUnstable

```
public class FilePathUnstable
extends FilePathWrapper
```
An unstable file system. It is used to simulate file system problems (for example out of disk space).

Field Summary
- Fields inherited from class org.h2.store.fs.FilePath
  name

Constructor Summary

Constructors
Constructor and Description

FilePathUnstable()

Constructors
Constructor and Description
`FilePathUnstable()`

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method and Description
`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(java.lang.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.
`int`	`getDiskFullCount()`
`java.lang.String`	`getName()` Get the file or directory name (the last element of the path).
`FilePath`	`getParent()` Get the parent directory of a file or directory.
`java.lang.String`	`getScheme()` Get the scheme (prefix) for this file provider.
`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.
`java.util.List<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.
`static FilePathUnstable`	`register()` Register the file system.
`void`	`setDiskFullCount(int count, int seed)` Set the number of write operations before the disk is full, and the random seed (for partial writes).
`void`	`setPartialWrites(boolean partialWrites)` Whether partial writes are possible (writing only part of the data).
`boolean`	`setReadOnly()` Disable the ability to write.
`long`	`size()` Get the size of a file in bytes
`FilePath`	`toRealPath()` Normalize a file name.

Methods inherited from class org.h2.store.fs.FilePathWrapper
getBase, getPath, getPrefix, unwrap, unwrap, wrap

Methods inherited from class org.h2.store.fs.FilePath
get, getNextTempFileNamePart, register, toString, unregister

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

- Constructor Detail
  - FilePathUnstable
```
public FilePathUnstable()
```
- Method Detail
  - register
```
public static FilePathUnstable register()
```
    Register the file system.
    
    Returns:
    
    the instance
  - setDiskFullCount
```
public void setDiskFullCount(int count,
                             int seed)
```
    Set the number of write operations before the disk is full, and the random seed (for partial writes).
    
    Parameters:
    
    count - the number of write operations (0 to never fail, Integer.MAX_VALUE to count the operations)
    
    seed - the new seed
  - getDiskFullCount
```
public int getDiskFullCount()
```
  - setPartialWrites
```
public void setPartialWrites(boolean partialWrites)
```
    Whether partial writes are possible (writing only part of the data).
    
    Parameters:
    
    partialWrites - true to enable
  - createDirectory
```
public void createDirectory()
```
    Description copied from class: FilePath
    
    Create a directory (all required parent directories already exist).
    
    Overrides:
    
    createDirectory in class FilePathWrapper
  - createFile
```
public boolean createFile()
```
    Description copied from class: FilePath
    
    Create a new file.
    
    Overrides:
    
    createFile in class FilePathWrapper
    
    Returns:
    
    true if creating 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
  - exists
```
public boolean exists()
```
    Description copied from class: FilePath
    
    Checks if a file exists.
    
    Overrides:
    
    exists in class FilePathWrapper
    
    Returns:
    
    true if it exists
  - getName
```
public java.lang.String getName()
```
    Description copied from class: FilePath
    
    Get the file or directory name (the last element of the path).
    
    Overrides:
    
    getName in class FilePath
    
    Returns:
    
    the last element of the path
  - 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
  - getParent
```
public FilePath getParent()
```
    Description copied from class: FilePath
    
    Get the parent directory of a file or directory.
    
    Overrides:
    
    getParent in class FilePathWrapper
    
    Returns:
    
    the parent directory name
  - isAbsolute
```
public boolean isAbsolute()
```
    Description copied from class: FilePath
    
    Check if the file name includes a path.
    
    Overrides:
    
    isAbsolute in class FilePathWrapper
    
    Returns:
    
    if the file name is absolute
  - isDirectory
```
public boolean isDirectory()
```
    Description copied from class: FilePath
    
    Check if it is a file or a directory.
    
    Overrides:
    
    isDirectory in class FilePathWrapper
    
    Returns:
    
    true if it is a directory
  - canWrite
```
public boolean canWrite()
```
    Description copied from class: FilePath
    
    Check if the file is writable.
    
    Overrides:
    
    canWrite in class FilePathWrapper
    
    Returns:
    
    if the file is writable
  - 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
  - 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.List<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
  - toRealPath
```
public FilePath toRealPath()
```
    Description copied from class: FilePath
    
    Normalize a file name.
    
    Overrides:
    
    toRealPath in class FilePathWrapper
    
    Returns:
    
    the normalized file name
  - 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
  - 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
  - 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
  - moveTo
```
public void moveTo(FilePath newName,
                   boolean atomicReplace)
```
    Description copied from class: FilePath
    
    Rename a file if this is allowed.
    
    Overrides:
    
    moveTo in class FilePathWrapper
    
    Parameters:
    
    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
  - createTempFile
```
public FilePath createTempFile(java.lang.String suffix,
                               boolean deleteOnExit,
                               boolean inTempDir)
                        throws java.io.IOException
```
    Description copied from class: FilePath
    
    Create a new temporary file.
    
    Overrides:
    
    createTempFile in class FilePathWrapper
    
    Parameters:
    
    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
  - 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

Class FilePathUnstable

Field Summary

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

Constructor Summary

Method Summary

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

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

Methods inherited from class java.lang.Object

Constructor Detail

FilePathUnstable

Method Detail

register

setDiskFullCount

getDiskFullCount

setPartialWrites

createDirectory

createFile

delete

exists

getName

lastModified

getParent

isAbsolute

isDirectory

canWrite

setReadOnly

size

newDirectoryStream

toRealPath

newInputStream

open

newOutputStream

moveTo

createTempFile

getScheme