org.apache.nutch.ndfs
Class NDFSFile

java.lang.Object
  java.io.File
      org.apache.nutch.ndfs.NDFSFile

All Implemented Interfaces:

Comparable, Serializable

public class NDFSFile

extends File

NDFSFile is a traditional java File that's been annotated with some extra information.

Author:

Mike Cafarella

See Also:

Serialized Form

Field Summary

static String

NDFS_FILE_SEPARATOR Separator used in NDFS filenames.

Fields inherited from class java.io.File

pathSeparator, pathSeparatorChar, separator, separatorChar

Constructor Summary

NDFSFile(NDFSFileInfo info)

Method Summary

boolean	canRead() A number of File methods are unsupported in this subclass
boolean	canWrite()
boolean	createNewFile()
boolean	delete()
void	deleteOnExit()
long	getContentsLength() And add a few extras
static String	getNDFSParent(String path) Retrieving parent path from NDFS path string
boolean	isDirectory() We need to reimplement some of them
boolean	isFile()
boolean	isHidden()
long	length()

Methods inherited from class java.io.File

compareTo, compareTo, createTempFile, createTempFile, equals, exists, getAbsoluteFile, getAbsolutePath, getCanonicalFile, getCanonicalPath, getName, getParent, getParentFile, getPath, hashCode, isAbsolute, lastModified, list, list, listFiles, listFiles, listFiles, listRoots, mkdir, mkdirs, renameTo, setLastModified, setReadOnly, toString, toURI, toURL

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

NDFS_FILE_SEPARATOR

public static final String NDFS_FILE_SEPARATOR

Separator used in NDFS filenames.

See Also:

Constant Field Values

Constructor Detail

NDFSFile

public NDFSFile(NDFSFileInfo info)

Method Detail

canRead

public boolean canRead()

A number of File methods are unsupported in this subclass

canWrite

public boolean canWrite()

createNewFile

public boolean createNewFile()

delete

public boolean delete()

deleteOnExit

public void deleteOnExit()

isHidden

public boolean isHidden()

isDirectory

public boolean isDirectory()

We need to reimplement some of them

isFile

public boolean isFile()

length

public long length()

getContentsLength

public long getContentsLength()

And add a few extras

getNDFSParent

public static String getNDFSParent(String path)

Retrieving parent path from NDFS path string

Parameters:

path - - NDFS path

Returns:

- parent path of NDFS path, or null if no parent exist.