org.apache.ambari.annotations

Enum TransactionalLock.LockArea

java.lang.Object

java.lang.Enum<TransactionalLock.LockArea>

org.apache.ambari.annotations.TransactionalLock.LockArea

All Implemented Interfaces:

Serializable, Comparable<TransactionalLock.LockArea>

Enclosing class:

TransactionalLock

public static enum TransactionalLock.LockArea
extends Enum<TransactionalLock.LockArea>

The area that the lock is being applied to. There is exactly 1 ReadWriteLock for every area defined.

Enum Constant Summary

Enum Constants

Enum Constant and Description
HRC_STATUS_CACHE Joinpoint lock around work performed on caching the host role command status in a given stage and request.

Method Summary

Modifier and Type	Method and Description
boolean	isEnabled(Configuration configuration) Gets whether this TransactionalLock.LockArea is enabled.
static TransactionalLock.LockArea	valueOf(String name) Returns the enum constant of this type with the specified name.
static TransactionalLock.LockArea[]	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

HRC_STATUS_CACHE

public static final TransactionalLock.LockArea HRC_STATUS_CACHE

Joinpoint lock around work performed on caching the host role command status in a given stage and request.

Method Detail

values

public static TransactionalLock.LockArea[] 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 (TransactionalLock.LockArea c : TransactionalLock.LockArea.values())
    System.out.println(c);

Returns:

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

valueOf

public static TransactionalLock.LockArea 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

isEnabled

public boolean isEnabled(Configuration configuration)

Gets whether this TransactionalLock.LockArea is enabled.

Parameters:

configuration - the configuration to read from (not null).

Returns:

true if enabled, false otherwise.