Package org.apache.hadoop.fs

Class FsShellPermissions.Chown

java.lang.Object

org.apache.hadoop.conf.Configured

org.apache.hadoop.fs.shell.Command

org.apache.hadoop.fs.shell.FsCommand

org.apache.hadoop.fs.FsShellPermissions

org.apache.hadoop.fs.FsShellPermissions.Chown

All Implemented Interfaces:

Configurable

Direct Known Subclasses:

FsShellPermissions.Chgrp

Enclosing class:

FsShellPermissions

public static class FsShellPermissions.Chown
extends FsShellPermissions

Used to change owner and/or group of files

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.fs.FsShellPermissions

FsShellPermissions.Chgrp, FsShellPermissions.Chmod, FsShellPermissions.Chown

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DESCRIPTION
protected String	group
static final String	NAME
protected String	owner
static final String	USAGE

Fields inherited from class org.apache.hadoop.fs.shell.Command

args, COMMAND_DESCRIPTION_FIELD, COMMAND_NAME_FIELD, COMMAND_USAGE_FIELD, err, exceptions, exitCode, name, numErrors, out, recursive

Constructor Summary

Constructors

Constructor	Description
Chown()

Method Summary

Modifier and Type	Method	Description
protected void	parseOwnerGroup(String ownerStr)	Parse the first argument into an owner and group
protected void	processOptions(LinkedList<String> args)	Must be implemented by commands to process the command line flags and check the bounds of the remaining arguments.
protected void	processPath(PathData item)	Hook for commands to implement an operation to be applied on each path for the command.

Methods inherited from class org.apache.hadoop.fs.FsShellPermissions

registerCommands

Methods inherited from class org.apache.hadoop.fs.shell.FsCommand

getCommandName, processRawArguments, run, runAll

Methods inherited from class org.apache.hadoop.fs.shell.Command

displayError, displayError, displayWarning, exitCodeForError, expandArgument, expandArguments, getCommandFactory, getDepth, getDescription, getListingGroupSize, getName, getReplacementCommand, getUsage, isDeprecated, isPathRecursable, isRecursive, isSorted, postProcessPath, processArgument, processArguments, processNonexistentPath, processPathArgument, processPaths, processPaths, recursePath, run, run, setCommandFactory, setName, setRecursive

Methods inherited from class org.apache.hadoop.conf.Configured

getConf, setConf

Methods inherited from class java.lang.Object

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

Field Details

NAME

public static final String NAME

See Also:

• Constant Field Values

USAGE

public static final String USAGE

See Also:

• Constant Field Values

DESCRIPTION

public static final String DESCRIPTION

owner

protected String owner

group

protected String group

Constructor Details

Chown

public Chown()

Method Details

processOptions

protected void processOptions(LinkedList<String> args)
                       throws IOException

Description copied from class: Command

Must be implemented by commands to process the command line flags and check the bounds of the remaining arguments. If an IllegalArgumentException is thrown, the FsShell object will print the short usage of the command.

Overrides:

processOptions in class Command

Parameters:

args - the command line arguments

Throws:

IOException - raised on errors performing I/O.

parseOwnerGroup

protected void parseOwnerGroup(String ownerStr)

Parse the first argument into an owner and group

Parameters:

ownerStr - string describing new ownership

processPath

protected void processPath(PathData item)
                    throws IOException

Description copied from class: Command

Hook for commands to implement an operation to be applied on each path for the command. Note implementation of this method is optional if earlier methods in the chain handle the operation.

Overrides:

processPath in class Command

Parameters:

item - a PathData object

Throws:

IOException - if anything else goes wrong in the user-implementation