Package com.activeviam.io

Class ExposedByteArrayOutputStream

java.lang.Object

java.io.OutputStream

java.io.ByteArrayOutputStream

com.activeviam.io.ExposedByteArrayOutputStream

All Implemented Interfaces:

Closeable, Flushable, AutoCloseable

public class ExposedByteArrayOutputStream
extends ByteArrayOutputStream

Modified version of JGroups ExposedByteArrayOutputStream, which optimizes the write function to limit unnecessary transient array copies when the buffer gets large.

Author:

ActiveViam

Constructor Summary

Constructors

Constructor	Description
ExposedByteArrayOutputStream()

Method Summary

Modifier and Type	Method	Description
int	getCapacity()	Returns the capacity of the stream.
byte[]	getRawBuffer()	Returns the underlying byte array.
void	reset()	Resets the count field of this byte array output stream to zero, so that all currently accumulated output in the output stream is discarded.
void	reset(int maxSize)	Resets count and creates a new buf if the current buf is > maxSize.
int	size()	Returns the current size of the buffer.
byte[]	toByteArray()	Creates a newly allocated byte array.
void	write(byte[] b, int off, int len)	Writes len bytes from the specified byte array starting at offset off to this byte array output stream.
void	write(int b)
void	writeTo(OutputStream out)	Writes the complete contents of this byte array output stream to the specified output stream argument, as if by calling the output stream's write method using out.write(buf, 0, count).

Methods inherited from class java.io.ByteArrayOutputStream

close, toString, toString, toString, toString, writeBytes

Methods inherited from class java.io.OutputStream

flush, nullOutputStream, write

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ExposedByteArrayOutputStream

public ExposedByteArrayOutputStream()

Method Detail

getRawBuffer

public byte[] getRawBuffer()

Returns the underlying byte array.

getCapacity

public int getCapacity()

Returns the capacity of the stream.

write

public void write(int b)

Overrides:

write in class ByteArrayOutputStream

write

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

Writes len bytes from the specified byte array starting at offset off to this byte array output stream.

Overrides:

write in class ByteArrayOutputStream

Parameters:

b - the data.

off - the start offset in the data.

len - the number of bytes to write.

writeTo

public void writeTo(OutputStream out)
             throws IOException

Writes the complete contents of this byte array output stream to the specified output stream argument, as if by calling the output stream's write method using out.write(buf, 0, count).

Overrides:

writeTo in class ByteArrayOutputStream

Parameters:

out - the output stream to which to write the data.

Throws:

IOException - if an I/O error occurs.

reset

public void reset()

Resets the count field of this byte array output stream to zero, so that all currently accumulated output in the output stream is discarded. The output stream can be used again, reusing the already allocated buffer space.

Overrides:

reset in class ByteArrayOutputStream

See Also:

ByteArrayInputStream.count

reset

public void reset(int maxSize)

Resets count and creates a new buf if the current buf is > maxSize. This method is not synchronized.

Parameters:

maxSize - size of the buffer

toByteArray

public byte[] toByteArray()

Creates a newly allocated byte array. Its size is the current size of this output stream and the valid contents of the buffer have been copied into it.

Overrides:

toByteArray in class ByteArrayOutputStream

Returns:

the current contents of this output stream, as a byte array.

See Also:

ByteArrayOutputStream.size()

size

public int size()

Returns the current size of the buffer.

Overrides:

size in class ByteArrayOutputStream

Returns:

the value of the count field, which is the number of valid bytes in this output stream.

See Also:

ByteArrayOutputStream.count