net.sourceforge.javadpkg.io

Interface DataSwap

All Superinterfaces:

AutoCloseable, Closeable

All Known Implementing Classes:

DataByteArraySwap, DataTempFileSwap

public interface DataSwap
extends Closeable

A swap can be used for storing data temporarily.

A swap consists of a DataTarget which can be used to write the data and a DataSource to read it afterwards. When the swap is closed the stored data will be deleted.

Version:

1.0, 29.04.2016 by Gerrit Hohl

Author:

Gerrit Hohl (gerrit-hohl@users.sourceforge.net)

Method Summary

Modifier and Type	Method and Description
DataSource	getSource() Returns the source.
DataTarget	getTarget() Returns the target.

Methods inherited from interface java.io.Closeable

close

Method Detail

getTarget

DataTarget getTarget()
              throws IOException

Returns the target.

Subsequent calls will return the same target.

Returns:

The target.

Throws:

IllegalStateException - If the getSource() method has been already called.

IOException - If an I/O error occurs while creating the target.

getSource

DataSource getSource()
              throws IOException

Returns the source.

Subsequent calls will return the same source.

Returns:

The source.

Throws:

IllegalStateException - If the getTarget() method hasn't been called before.

IOException - If an I/O error occurs while creating the source.