de.yaacc.share.DeleteOnCloseSource Class Reference

The registered source of a copied file: reads go to the wrapped source, and when this source is really closed (never while a read runs, see PositionalSource) the wrapped source is closed first and then the copy is deleted, so a copy never outlives its share. More...

Inheritance diagram for de.yaacc.share.DeleteOnCloseSource:

Collaboration diagram for de.yaacc.share.DeleteOnCloseSource:

Public Member Functions
	DeleteOnCloseSource (PositionalSource delegate, File file)
Public Member Functions inherited from de.yaacc.share.PositionalSource
final long	size ()
final int	readAt (long position, byte[] buf, int off, int len) throws IOException
	Reads up to len bytes starting at position.
final boolean	isClosing ()
final void	close ()
	Refuses new reads and closes the backend: now if nothing is reading, else when the last running read ends.

Protected Member Functions
int	readAtInternal (long position, byte[] buf, int off, int len) throws IOException
	Reads from the backend.
void	closeInternal ()
	Closes the backend.
Protected Member Functions inherited from de.yaacc.share.PositionalSource
	PositionalSource (long size)

Detailed Description

The registered source of a copied file: reads go to the wrapped source, and when this source is really closed (never while a read runs, see PositionalSource) the wrapped source is closed first and then the copy is deleted, so a copy never outlives its share.

Plain Java.

Constructor & Destructor Documentation

DeleteOnCloseSource()

de.yaacc.share.DeleteOnCloseSource.DeleteOnCloseSource	(	PositionalSource	delegate,
		File	file )

Parameters

delegate	the source that reads the copy
file	the copy to delete

Exceptions

IllegalArgumentException

if an argument is null

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Member Function Documentation

closeInternal()

void de.yaacc.share.DeleteOnCloseSource.closeInternal ( )

protected

Closes the backend.

Called exactly once, never while a read is running, possibly on a reader's thread. Should not throw; an exception is swallowed.

Reimplemented from de.yaacc.share.PositionalSource.

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readAtInternal()

int de.yaacc.share.DeleteOnCloseSource.readAtInternal ( long position, byte[] buf, int off, int len ) throws IOException

protected

Reads from the backend.

Called with 0 <= position < size(), len > 0 and a valid buffer range; possibly from several threads at once; never after the backend was closed. May return fewer bytes than asked. Returns -1 (or 0) if the backend has no more data at that position.

Reimplemented from de.yaacc.share.PositionalSource.

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The documentation for this class was generated from the following file:

• /github/workspace/yaacc/src/main/java/de/yaacc/share/DeleteOnCloseSource.java