Class BlockedByteArrayInputStream

java.lang.Object

java.io.InputStream

org.apache.derby.impl.io.vfmem.BlockedByteArrayInputStream

All Implemented Interfaces:

Closeable, AutoCloseable

class BlockedByteArrayInputStream
extends InputStream

An input stream reading from a blocked byte array.

Field Summary

Fields

Modifier and Type	Field	Description
private long	pos	The current position of the stream.
private BlockedByteArray	src	The underlying source.

Constructor Summary

Constructors

Constructor	Description
BlockedByteArrayInputStream(BlockedByteArray src, long pos)	Creates a new input stream reading from a blocked byte array.

Method Summary

Modifier and Type	Method	Description
void	close()	Closes the stream.
(package private) long	getPosition()	Returns the current position.
int	read()	Reads a single byte.
int	read(byte[] buf, int offset, int len)	Reads up to len bytes.
(package private) void	setPosition(long newPos)	Sets the position.

Methods inherited from class InputStream

available, mark, markSupported, nullInputStream, read, readAllBytes, readNBytes, readNBytes, reset, skip, skipNBytes, transferTo

Methods inherited from class Object

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

Field Details

src

private BlockedByteArray src

The underlying source. Set to null when closed.

pos

private long pos

The current position of the stream.

Constructor Details

BlockedByteArrayInputStream

public BlockedByteArrayInputStream(BlockedByteArray src,
 long pos)

Creates a new input stream reading from a blocked byte array.

Parameters:

src - the source blocked byte array

pos - the initial position to start reading from

Method Details

setPosition

void setPosition(long newPos)

Sets the position.

Parameters:

newPos - the new byte position

getPosition

long getPosition()

Returns the current position.

Returns:

The current byte position.

read

public int read()

Reads a single byte.

Specified by:

read in class InputStream

Returns:

A byte.

read

public int read(byte[] buf,
 int offset,
 int len)

Reads up to len bytes.

Overrides:

read in class InputStream

Parameters:

buf - destination buffer

offset - offset into the destination buffer

len - number of bytes to read

Returns:

The number of bytes read.

close

public void close()

Closes the stream.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Overrides:

close in class InputStream