org.apache.derby.impl.io.vfmem

Class BlockedByteArrayInputStream

java.lang.Object

java.io.InputStream

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

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable

 class BlockedByteArrayInputStream
extends java.io.InputStream

An input stream reading from a blocked byte array.

Field Summary

Fields

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

Constructor Summary

Constructors

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

Method Summary

Methods

Modifier and Type	Method and 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 java.io.InputStream

available, mark, markSupported, read, reset, skip

Methods inherited from class java.lang.Object

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

Field Detail

src

private BlockedByteArray src

The underlying source. Set to null when closed.

pos

private long pos

The current position of the stream.

Constructor Detail

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 Detail

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 java.io.InputStream

Returns:

A byte.

read

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

Reads up to len bytes.

Overrides:

read in class java.io.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 java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.InputStream