net.sf.basedb.ws.server
Class TempFileDataSource

java.lang.Object
  javax.activation.FileDataSource
      net.sf.basedb.ws.server.TempFileDataSource

All Implemented Interfaces:

DataSource

public class TempFileDataSource
extends FileDataSource

A DataSource implementation for temporary files. The temporary file will be deleted once the entire file has been read or the close() method is called on the InputStream.

Since this may cause problems if the getInputStream() is called more than once, the file deletion is disabled if that happens. Instead the File.deleteOnExit() is called to mark the file for deletion when the virtual machine exits.

Version:

2.5

Author:

nicklas

Last modified

$Date: 2008-09-11 22:06:36 +0200 (Thu, 11 Sep 2008) $

Nested Class Summary

private class

TempFileDataSource.TempInputStream An InputStream implementation that deletes the source file once the entire stream has been read (=any of the read() methods return -1) or when close() is called.

Field Summary

private String	mimeType
private int	numStreams

Constructor Summary

TempFileDataSource(File file, String mimeType)

Method Summary

String	getContentType() Get the supplied MIME type, if any.
InputStream	getInputStream() Get an InputStream that deletes the source file as soon as the end of file is reached or close() is called.

Methods inherited from class javax.activation.FileDataSource

getFile, getName, getOutputStream, setFileTypeMap

Methods inherited from class java.lang.Object

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

Field Detail

mimeType

private final String mimeType

numStreams

private int numStreams

Constructor Detail

TempFileDataSource

public TempFileDataSource(File file,
                          String mimeType)

Method Detail

getContentType

public String getContentType()

Get the supplied MIME type, if any. Otherwise call super.getContentType().

Specified by:

getContentType in interface DataSource

Overrides:

getContentType in class FileDataSource

getInputStream

public InputStream getInputStream()
                           throws IOException

Get an InputStream that deletes the source file as soon as the end of file is reached or close() is called. If this method is called more than once the file deletion is disabled since it may interfere with other streams.

Specified by:

getInputStream in interface DataSource

Overrides:

getInputStream in class FileDataSource

Throws:

IOException