alluxio.cli.fs.command

Class TouchCommand

java.lang.Object

alluxio.cli.fs.command.AbstractFileSystemCommand

alluxio.cli.fs.command.TouchCommand

All Implemented Interfaces:

Command

@ThreadSafe
 @PublicApi
public final class TouchCommand
extends AbstractFileSystemCommand

Creates a 0 byte file specified by argv. The file will be written to UnderFileSystem.

Field Summary

Fields inherited from class alluxio.cli.fs.command.AbstractFileSystemCommand

mFileSystem, mFsContext

Constructor Summary

Constructors

Constructor and Description
TouchCommand(FileSystemContext fsContext)

Method Summary

Modifier and Type	Method and Description
String	getCommandName() Gets the command name as input from the shell.
String	getDescription()
String	getUsage()
int	run(org.apache.commons.cli.CommandLine cl) Runs the command.
protected void	runPlainPath(AlluxioURI inputPath, org.apache.commons.cli.CommandLine cl) Runs the command for a particular URI that does not contain wildcard in its path.
void	validateArgs(org.apache.commons.cli.CommandLine cl) Checks if the arguments are valid or throw InvalidArgumentException.

Methods inherited from class alluxio.cli.fs.command.AbstractFileSystemCommand

processHeader, runWildCardCmd

Methods inherited from class java.lang.Object

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

Methods inherited from interface alluxio.cli.Command

getOptions, getSubCommands, hasSubCommand, parseAndValidateArgs

Constructor Detail

TouchCommand

public TouchCommand(FileSystemContext fsContext)

Parameters:

fsContext - the filesystem of Alluxio

Method Detail

getCommandName

public String getCommandName()

Description copied from interface: Command

Gets the command name as input from the shell.

Returns:

the command name

validateArgs

public void validateArgs(org.apache.commons.cli.CommandLine cl)
                  throws InvalidArgumentException

Description copied from interface: Command

Checks if the arguments are valid or throw InvalidArgumentException.

Parameters:

cl - the parsed command line for the arguments

Throws:

InvalidArgumentException - when arguments are not valid

runPlainPath

protected void runPlainPath(AlluxioURI inputPath,
                            org.apache.commons.cli.CommandLine cl)
                     throws AlluxioException,
                            IOException

Description copied from class: AbstractFileSystemCommand

Runs the command for a particular URI that does not contain wildcard in its path.

Overrides:

runPlainPath in class AbstractFileSystemCommand

Parameters:

inputPath - an AlluxioURI that does not contain wildcard

cl - object containing the original commandLine

Throws:

AlluxioException

IOException

run

public int run(org.apache.commons.cli.CommandLine cl)
        throws AlluxioException,
               IOException

Description copied from interface: Command

Runs the command.

Parameters:

cl - the parsed command line for the arguments

Returns:

the result of running the command

Throws:

AlluxioException

IOException

getUsage

public String getUsage()

Returns:

the usage information of the command

getDescription

public String getDescription()

Returns:

the description information of the command