Package org.codice.ddf.platform.util

Class TemporaryFileBackedOutputStream

java.lang.Object

java.io.OutputStream

org.codice.ddf.platform.util.TemporaryFileBackedOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class TemporaryFileBackedOutputStream
extends OutputStream

TemporaryFileBackedOutputStream buffers the written data to memory of a temporary file, and makes the data available as a ByteSource. This class will make sure the temporary file is deleted when close() is called. The method asByteSource() should not be called after close() is called.

Constructor Summary

Constructors

Constructor	Description
TemporaryFileBackedOutputStream()	Use a file threshold size of DEFAULT_THRESHOLD.
TemporaryFileBackedOutputStream(int fileThreshold)

Method Summary

Modifier and Type	Method	Description
com.google.common.io.ByteSource	asByteSource()	Returns a readable ByteSource view of the data that has been written to this stream.
void	close()
void	flush()
void	write(byte[] b)
void	write(byte[] b, int off, int len)
void	write(int b)

Methods inherited from class java.io.OutputStream

nullOutputStream

Methods inherited from class java.lang.Object

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

Constructor Details

TemporaryFileBackedOutputStream

public TemporaryFileBackedOutputStream(int fileThreshold)

Parameters:

fileThreshold - the number of bytes before the stream should switch to buffering to a file

TemporaryFileBackedOutputStream

public TemporaryFileBackedOutputStream()

Use a file threshold size of DEFAULT_THRESHOLD.

Method Details

write

public void write(int b)
           throws IOException

Specified by:

write in class OutputStream

Throws:

IOException

write

public void write(byte[] b)
           throws IOException

Overrides:

write in class OutputStream

Throws:

IOException

write

public void write(byte[] b,
 int off,
 int len)
           throws IOException

Overrides:

write in class OutputStream

Throws:

IOException

close

public void close()
           throws IOException

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class OutputStream

Throws:

IOException

flush

public void flush()
           throws IOException

Specified by:

flush in interface Flushable

Overrides:

flush in class OutputStream

Throws:

IOException

asByteSource

public com.google.common.io.ByteSource asByteSource()
                                             throws IOException

Returns a readable ByteSource view of the data that has been written to this stream. Must not be called after close() is called, otherwise an IllegalStateException will be thrown.

Returns:

ByteSource of the data

Throws:

IOException - throws an exception if the stream is closed