Package org.apache.hadoop.fs

Enum FSDataInputStream.FadviseType

java.lang.Object

java.lang.Enum<FSDataInputStream.FadviseType>

org.apache.hadoop.fs.FSDataInputStream.FadviseType

All Implemented Interfaces:

java.io.Serializable, java.lang.Comparable<FSDataInputStream.FadviseType>

Enclosing class:

FSDataInputStream

public static enum FSDataInputStream.FadviseType
extends java.lang.Enum<FSDataInputStream.FadviseType>

Type of file advise to be passed on to the underlying file system. This information can be used to make optimizations such as reclaiming buffers for files that are no longer needed by the application, etc.

Enum Constant Summary

Enum Constants

Enum Constant	Description
FILE_DONTNEED
FILE_RANDOM
FILE_SEQUENTIAL

Method Summary

Modifier and Type	Method	Description
static FSDataInputStream.FadviseType	valueOf(java.lang.String name)	Returns the enum constant of this type with the specified name.
static FSDataInputStream.FadviseType[]	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

FILE_DONTNEED

public static final FSDataInputStream.FadviseType FILE_DONTNEED

FILE_RANDOM

public static final FSDataInputStream.FadviseType FILE_RANDOM

FILE_SEQUENTIAL

public static final FSDataInputStream.FadviseType FILE_SEQUENTIAL

Method Detail

values

public static FSDataInputStream.FadviseType[] 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 (FSDataInputStream.FadviseType c : FSDataInputStream.FadviseType.values())
    System.out.println(c);

Returns:

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

valueOf

public static FSDataInputStream.FadviseType valueOf(java.lang.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:

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

java.lang.NullPointerException - if the argument is null