com.sleepycat.util

Class FastOutputStream

public class FastOutputStream extends OutputStream

A replacement for ByteArrayOutputStream that does not synchronize every byte read.

This class extends OutputStream and its write() methods allow it to be used as a standard output stream. In addition, it provides writeFast() methods that are not declared to throw IOException. IOException is never thrown by this class.

Field Summary
static int	DEFAULT_BUMP_SIZE The default amount that the buffer is increased when it is full.
static int	DEFAULT_INIT_SIZE The default initial size of the buffer if no initialSize parameter is specified.

Constructor Summary
	FastOutputStream() Creates an output stream with default sizes.
	FastOutputStream(int initialSize) Creates an output stream with a default bump size and a given initial size.
	FastOutputStream(int initialSize, int bumpSize) Creates an output stream with a given bump size and initial size.
	FastOutputStream(byte[] buffer) Creates an output stream with a given initial buffer and a default bump size.
	FastOutputStream(byte[] buffer, int bumpSize) Creates an output stream with a given initial buffer and a given bump size.

Method Summary
void	addSize(int sizeAdded) Skip the given number of bytes in the buffer.
byte[]	getBufferBytes() Returns the buffer owned by this object.
int	getBufferLength() Returns the length used in the internal buffer, i.e., the offset at which data will be written next.
int	getBufferOffset() Returns the offset of the internal buffer.
void	makeSpace(int sizeNeeded) Ensure that at least the given number of bytes are available in the internal buffer.
void	reset()
int	size()
byte[]	toByteArray()
String	toString()
String	toString(String encoding)
void	write(int b)
void	write(byte[] fromBuf)
void	write(byte[] fromBuf, int offset, int length)
void	writeFast(int b) Equivalent to `write(int) but does not throw IOException.`
void	writeFast(byte[] fromBuf) Equivalent to `write(byte[]) but does not throw IOException.`
void	writeFast(byte[] fromBuf, int offset, int length) Equivalent to `write(byte[],int,int) but does not throw IOException.`
void	writeTo(OutputStream out)

Field Detail

DEFAULT_BUMP_SIZE

public static final int DEFAULT_BUMP_SIZE

The default amount that the buffer is increased when it is full. This constant is zero, which means to double the current buffer size.

DEFAULT_INIT_SIZE

public static final int DEFAULT_INIT_SIZE

The default initial size of the buffer if no initialSize parameter is specified. This constant is 100 bytes.

Constructor Detail

FastOutputStream

public FastOutputStream()

Creates an output stream with default sizes.

FastOutputStream

public FastOutputStream(int initialSize)

Creates an output stream with a default bump size and a given initial size.

Parameters: initialSize the initial size of the buffer.

FastOutputStream

public FastOutputStream(int initialSize, int bumpSize)

Creates an output stream with a given bump size and initial size.

Parameters: initialSize the initial size of the buffer. bumpSize the amount to increment the buffer.

FastOutputStream

public FastOutputStream(byte[] buffer)

Creates an output stream with a given initial buffer and a default bump size.

Parameters: buffer the initial buffer; will be owned by this object.

FastOutputStream

public FastOutputStream(byte[] buffer, int bumpSize)

Creates an output stream with a given initial buffer and a given bump size.

Parameters: buffer the initial buffer; will be owned by this object. bumpSize the amount to increment the buffer. If zero (the default), the current buffer size will be doubled when the buffer is full.

Method Detail

addSize

public void addSize(int sizeAdded)

Skip the given number of bytes in the buffer.

Parameters: sizeAdded number of bytes to skip.

getBufferBytes

public byte[] getBufferBytes()

Returns the buffer owned by this object.

Returns: the buffer.

getBufferLength

public int getBufferLength()

Returns the length used in the internal buffer, i.e., the offset at which data will be written next.

Returns: the buffer length.

getBufferOffset

public int getBufferOffset()

Returns the offset of the internal buffer.

Returns: always zero currently.

makeSpace

public void makeSpace(int sizeNeeded)

Ensure that at least the given number of bytes are available in the internal buffer.

Parameters: sizeNeeded the number of bytes desired.

write(int) but does not throw
 IOException.See Also: FastOutputStream




   writeFast
   public final  void writeFast(byte[] fromBuf)
   
 Equivalent to write(byte[]) but does not throw
 IOException.See Also: (byte[]) 



   writeFast
   public final  void writeFast(byte[] fromBuf, int offset, int length)
   
 Equivalent to write(byte[],int,int) but does not throw
 IOException.See Also: (byte[],int,int) 



   writeTo
   public  void writeTo(OutputStream out)
   

   
   
    
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