org.apache.nutch.ndfs
Class Block

java.lang.Object
  org.apache.nutch.ndfs.Block

All Implemented Interfaces:

Comparable, Writable

public class Block

extends Object

implements Writable, Comparable

A Block is a Nutch FS primitive, identified by a long.

Author:

Mike Cafarella

Constructor Summary

Block()

Block(File f, long len)
Find the blockid from the given filename

Block(long blkid, long len)

Method Summary

int	compareTo(Object o)
long	getBlockId()
String	getBlockName()
long	getNumBytes()
static boolean	isBlockFilename(File f)
void	readFields(DataInput in) Reads the fields of this object from in.
void	setNumBytes(long len)
String	toString()
void	write(DataOutput out) Writes the fields of this object to out.

Methods inherited from class java.lang.Object

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

Constructor Detail

Block

public Block()

Block

public Block(long blkid,
             long len)

Block

public Block(File f,
             long len)

Find the blockid from the given filename

Method Detail

isBlockFilename

public static boolean isBlockFilename(File f)

getBlockId

public long getBlockId()

getBlockName

public String getBlockName()

getNumBytes

public long getNumBytes()

setNumBytes

public void setNumBytes(long len)

toString

public String toString()

write

public void write(DataOutput out)
           throws IOException

Description copied from interface: Writable

Writes the fields of this object to out.

Specified by:

write in interface Writable

Throws:

IOException

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from interface: Writable

Reads the fields of this object from in. For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Specified by:

readFields in interface Writable

Throws:

IOException

compareTo

public int compareTo(Object o)

Specified by:

compareTo in interface Comparable