alluxio.master.journal

Enum JournalReader.State

java.lang.Object

java.lang.Enum<JournalReader.State>

alluxio.master.journal.JournalReader.State

All Implemented Interfaces:

Serializable, Comparable<JournalReader.State>

Enclosing interface:

JournalReader

public static enum JournalReader.State
extends Enum<JournalReader.State>

States that the reader can be after calling JournalReader.advance().

Enum Constant Summary

Enum Constants

Enum Constant and Description
CHECKPOINT Indicates that the next item to process is a checkpoint.
DONE Indicates that there is nothing left to read.
LOG Indicates that the next item to process is an edit log.

Method Summary

Modifier and Type	Method and Description
static JournalReader.State	valueOf(String name) Returns the enum constant of this type with the specified name.
static JournalReader.State[]	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

CHECKPOINT

public static final JournalReader.State CHECKPOINT

Indicates that the next item to process is a checkpoint. The caller should call JournalReader.getCheckpoint().

LOG

public static final JournalReader.State LOG

Indicates that the next item to process is an edit log. The caller should call JournalReader.getEntry().

DONE

public static final JournalReader.State DONE

Indicates that there is nothing left to read.

Method Detail

values

public static JournalReader.State[] 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 (JournalReader.State c : JournalReader.State.values())
    System.out.println(c);

Returns:

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

valueOf

public static JournalReader.State 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