io.lacuna.bifurcan.durable.io

Class FileOutput

java.lang.Object

io.lacuna.bifurcan.durable.io.FileOutput

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, java.nio.channels.Channel, java.nio.channels.WritableByteChannel

public class FileOutput
extends java.lang.Object
implements java.nio.channels.WritableByteChannel

A special WritableByteChannel for a durable collection file, which will construct a hash as the file is written, and add the appropriate prefix.

Field Summary

Fields

Modifier and Type	Field and Description
static java.nio.ByteBuffer	MAGIC_BYTES

Constructor Summary

Constructors

Constructor and Description
FileOutput(ISet<IDurableCollection.Fingerprint> dependencies)

Method Summary

Modifier and Type	Method and Description
void	close()
boolean	isOpen()
java.nio.file.Path	moveTo(java.nio.file.Path directory) Finalizes the collection after close() is called, moving the file to directory, with the hex-encoded hash for a name.
long	transferFrom(BufferedChannel channel, long start, long end)
int	write(java.nio.ByteBuffer src)

Methods inherited from class java.lang.Object

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

Field Detail

MAGIC_BYTES

public static final java.nio.ByteBuffer MAGIC_BYTES

Constructor Detail

FileOutput

public FileOutput(ISet<IDurableCollection.Fingerprint> dependencies)

Method Detail

moveTo

public java.nio.file.Path moveTo(java.nio.file.Path directory)

Finalizes the collection after close() is called, moving the file to directory, with the hex-encoded hash for a name.

transferFrom

public long transferFrom(BufferedChannel channel,
                         long start,
                         long end)

write

public int write(java.nio.ByteBuffer src)
          throws java.io.IOException

Specified by:

write in interface java.nio.channels.WritableByteChannel

Throws:

java.io.IOException

isOpen

public boolean isOpen()

Specified by:

isOpen in interface java.nio.channels.Channel

close

public void close()

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface java.nio.channels.Channel