org.apache.hadoop.mapred.nativetask

Enum DataChannel

java.lang.Object

java.lang.Enum<DataChannel>

org.apache.hadoop.mapred.nativetask.DataChannel

All Implemented Interfaces:

Serializable, Comparable<DataChannel>

@InterfaceAudience.Private
public enum DataChannel
extends Enum<DataChannel>

Enum Constant Summary

Enum Constants

Enum Constant and Description
IN We will only read data from this channel
INOUT We will do both read and write for this channel
NONE There is no data exchange
OUT We will only write data from this channel

Method Summary

Modifier and Type	Method and Description
static DataChannel	valueOf(String name) Returns the enum constant of this type with the specified name.
static DataChannel[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

IN

public static final DataChannel IN

We will only read data from this channel

OUT

public static final DataChannel OUT

We will only write data from this channel

INOUT

public static final DataChannel INOUT

We will do both read and write for this channel

NONE

public static final DataChannel NONE

There is no data exchange

Method Detail

values

public static DataChannel[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (DataChannel c : DataChannel.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static DataChannel valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null