freenet.support.io

Class PooledFileRandomAccessBufferFactory

java.lang.Object

freenet.support.io.PooledFileRandomAccessBufferFactory

All Implemented Interfaces:

LockableRandomAccessBufferFactory

public class PooledFileRandomAccessBufferFactory
extends java.lang.Object
implements LockableRandomAccessBufferFactory

Creates temporary RAFs using a FilenameGenerator.

Constructor Summary

Constructors

Constructor and Description
PooledFileRandomAccessBufferFactory(FilenameGenerator filenameGenerator, java.util.Random seedRandom)

Method Summary

Modifier and Type	Method and Description
void	enableCrypto(boolean enable)
LockableRandomAccessBuffer	makeRAF(byte[] initialContents, int offset, int size, boolean readOnly) Create a bucket with specified initial contents.
LockableRandomAccessBuffer	makeRAF(long size) Create a bucket.

Methods inherited from class java.lang.Object

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

Constructor Detail

PooledFileRandomAccessBufferFactory

public PooledFileRandomAccessBufferFactory(FilenameGenerator filenameGenerator,
                                           java.util.Random seedRandom)

Method Detail

enableCrypto

public void enableCrypto(boolean enable)

makeRAF

public LockableRandomAccessBuffer makeRAF(long size)
                                   throws java.io.IOException

Description copied from interface: LockableRandomAccessBufferFactory

Create a bucket.

Specified by:

makeRAF in interface LockableRandomAccessBufferFactory

Parameters:

size - The maximum size of the data. Most factories will pre-allocate this space, and it may not be exceeded. However we do not guarantee that any I/O operation will complete; even if we have pre-allocated the disk space, we may be unable to write to it because of e.g. a hardware error.

Returns:

A LockableRandomAccessBuffer of the requested size.

Throws:

java.io.IOException - If an I/O error prevented the operation.

makeRAF

public LockableRandomAccessBuffer makeRAF(byte[] initialContents,
                                          int offset,
                                          int size,
                                          boolean readOnly)
                                   throws java.io.IOException

Description copied from interface: LockableRandomAccessBufferFactory

Create a bucket with specified initial contents.

Specified by:

makeRAF in interface LockableRandomAccessBufferFactory

Parameters:

initialContents - Byte array from which to copy data. Data will be copied even if the underlying implementation is a byte array, for reasons of consistency.

offset - Offset within the array to start copying data from.

size - Number of bytes to copy i.e. length of the new RandomAccessBuffer.

Returns:

Throws:

java.io.IOException - If an I/O error prevented the operation.