FileHandleAccessor

java.lang.Object

com.illumon.iris.db.util.file.FileHandleAccessor

Direct Known Subclasses:: LocalFileAccessor, TrackedSeekableByteChannel

public abstract class FileHandleAccessor
extends Object

Base class for accessors that wrap a FileHandle with support for interruption and asynchronous close.

Field Summary

Fields

Modifier and Type Field Description

protected File file

protected FileHandle fileHandle

Constructor Summary

Constructors
Modifier	Constructor	Description
`protected`	`FileHandleAccessor(FileHandleFactory.FileToHandleFunction fileHandleCreator, File file)`	Create an accessor that gets handles for `file` from `fileHandleCreator`.

Method Summary

Modifier and Type	Method	Description
`protected FileHandle`	`refreshFileHandle(FileHandle previousLocalHandle)`	Replace the file handle with a new one if the closed handle passed in is still current, and return the (possibly changed) current value.

Methods inherited from class java.lang.Object

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

Field Details
- file
  
  protected final File file
- fileHandle
  
  protected volatile FileHandle fileHandle
Constructor Details
- FileHandleAccessor
  
  protected FileHandleAccessor(@NotNull FileHandleFactory.FileToHandleFunction fileHandleCreator, @NotNull File file)
  
  Create an accessor that gets handles for file from fileHandleCreator.
  
  Parameters:
  
  fileHandleCreator - The function used to make file handles
  
  file - The abstract path name to access
Method Details
- refreshFileHandle
  
  protected final FileHandle refreshFileHandle(FileHandle previousLocalHandle)
  
  Replace the file handle with a new one if the closed handle passed in is still current, and return the (possibly changed) current value.
  
  Parameters:
  
  previousLocalHandle - The closed handle that calling code would like to replace
  
  Returns:
  
  The current file handle, possibly newly created