Package com.sun.xml.ws.api.ha

Enum HighAvailabilityProvider

java.lang.Object

java.lang.Enum<HighAvailabilityProvider>

com.sun.xml.ws.api.ha.HighAvailabilityProvider

All Implemented Interfaces:

Serializable, Comparable<HighAvailabilityProvider>

public enum HighAvailabilityProvider
extends Enum<HighAvailabilityProvider>

Singleton high-availability provider for Metro

Author:

Marek Potociar (marek.potociar at sun.com)

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static enum	HighAvailabilityProvider.StoreType	Enumeration of supported backing store factory types

Enum Constant Summary

Enum Constants

Enum Constant	Description
INSTANCE

Method Summary

Modifier and Type	Method	Description
static void	close(BackingStore<?,?> backingStore)	Helper method that avoids the need for exception handling boilerplate code when closing a BackingStore instance.
<K extends Serializable, V extends Serializable> BackingStore<K,V>	createBackingStore(BackingStoreFactory factory, String backingStoreName, Class<K> keyClass, Class<V> valueClass)	Helper method that avoids the need for exception handling boilerplate code when creating a new BackingStore instance.
static void	destroy(BackingStore<?,?> backingStore)	Helper method that avoids the need for exception handling boilerplate code when destroying a BackingStore instance.
BackingStoreFactory	getBackingStoreFactory(HighAvailabilityProvider.StoreType type)	Retrieves BackingStoreFactory implementation of the requested type.
<K extends Serializable, V extends Serializable> BackingStoreConfiguration<K,V>	initBackingStoreConfiguration(String storeName, Class<K> keyClass, Class<V> valueClass)	Creates BackingStoreConfiguration instance initialized with all mandatory fields.
void	initHaEnvironment(String clusterName, String instanceName)	This method is not meant to be used directly by the user of the Metro HighAvailabilityProvider class.
void	initHaEnvironment(String clusterName, String instanceName, boolean disableJreplica)
boolean	isDisabledJreplica()
boolean	isHaEnvironmentConfigured()	Provides information on whether there is a HA service available in the current JVM or not.
static <K extends Serializable, V extends Serializable> V	loadFrom(BackingStore<K,V> backingStore, K key, String version)	Helper method that avoids the need for exception handling boilerplate code when loading data from a BackingStore instance.
static <K extends Serializable> void	removeExpired(BackingStore<K,?> backingStore)	Helper method that avoids the need for exception handling boilerplate code when destroying a BackingStore instance.
static <K extends Serializable, V extends Serializable> void	removeFrom(BackingStore<K,V> backingStore, K key)	Helper method that avoids the need for exception handling boilerplate code when removing data from a BackingStore instance.
static <K extends Serializable, V extends Serializable> String	saveTo(BackingStore<K,V> backingStore, K key, V value, boolean isNew)	Helper method that avoids the need for exception handling boilerplate code when storing data into a BackingStore instance.
static HighAvailabilityProvider	valueOf(String name)	Returns the enum constant of this type with the specified name.
static HighAvailabilityProvider[]	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 Details

INSTANCE

public static final HighAvailabilityProvider INSTANCE

Method Details

values

public static HighAvailabilityProvider[] values()

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

Returns:

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

valueOf

public static HighAvailabilityProvider 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

initHaEnvironment

public void initHaEnvironment(String clusterName,
 String instanceName)

This method is not meant to be used directly by the user of the Metro HighAvailabilityProvider class. It is primarily used by a container to inject the proper cluster name and instance name values that are later used to initialize all BackingStoreConfiguration instances created via initBackingStoreConfiguration(String, Class, Class) method

Parameters:

clusterName - name of the cluster

instanceName - name of the cluster instance

initHaEnvironment

public void initHaEnvironment(String clusterName,
 String instanceName,
 boolean disableJreplica)

isDisabledJreplica

public boolean isDisabledJreplica()

initBackingStoreConfiguration

public <K extends Serializable,
V extends Serializable>
BackingStoreConfiguration<K,V> initBackingStoreConfiguration(String storeName,
 Class<K> keyClass,
 Class<V> valueClass)

Creates BackingStoreConfiguration instance initialized with all mandatory fields. This instance can be used to create BackingStore instance.

Type Parameters:

K - backing store key type

V - backing store value type

Parameters:

storeName - name of the backing store

keyClass - backing store key class

valueClass - backing store value class

Returns:

initialized BackingStoreConfiguration instance

getBackingStoreFactory

public BackingStoreFactory getBackingStoreFactory(HighAvailabilityProvider.StoreType type)
                                           throws HighAvailabilityProviderException

Retrieves BackingStoreFactory implementation of the requested type. In case this method is executed outside an HA environment (e.g. standalone mode), HighAvailabilityProvider.StoreType.NOOP implementation is returned.

Parameters:

type - type of the BackingStoreFactory implementation to be retrieved

Returns:

BackingStoreFactory implementation of the requested type. When executed outside HA environment, HighAvailabilityProvider.StoreType.NOOP implementation is returned.

Throws:

HighAvailabilityProviderException - in case the method is executed inside HA environment and the requested BackingStoreFactory implementation is not available.

isHaEnvironmentConfigured

public boolean isHaEnvironmentConfigured()

Provides information on whether there is a HA service available in the current JVM or not.

Returns:

true in case there is a HA service available in the current JVM, false otherwise

createBackingStore

public <K extends Serializable,
V extends Serializable>
BackingStore<K,V> createBackingStore(BackingStoreFactory factory,
 String backingStoreName,
 Class<K> keyClass,
 Class<V> valueClass)

Helper method that avoids the need for exception handling boilerplate code when creating a new BackingStore instance. The original checked BackingStoreException is wrapped into a new unchecked HighAvailabilityProviderException.

Type Parameters:

K - backing store key parameter type

V - backing store value parameter type

Parameters:

factory - BackingStoreFactory instance

backingStoreName - name of the backing store to be created

keyClass - backing store key class

valueClass - backing store value class

Returns:

newly created BackingStore instance.

loadFrom

public static <K extends Serializable,
V extends Serializable>
V loadFrom(BackingStore<K,V> backingStore,
 K key,
 String version)

Helper method that avoids the need for exception handling boilerplate code when loading data from a BackingStore instance. The original checked BackingStoreException is wrapped into a new unchecked HighAvailabilityProviderException.

Type Parameters:

K - backing store key parameter type

V - backing store data parameter type

Parameters:

backingStore - BackingStore instance

key - stored data identifier

version - stored data version

Returns:

stored data as specified by BackingStore.load(java.io.Serializable, String)

saveTo

public static <K extends Serializable,
V extends Serializable>
String saveTo(BackingStore<K,V> backingStore,
 K key,
 V value,
 boolean isNew)

Helper method that avoids the need for exception handling boilerplate code when storing data into a BackingStore instance. The original checked BackingStoreException is wrapped into a new unchecked HighAvailabilityProviderException.

Type Parameters:

K - backing store key parameter type

V - backing store value parameter type

Parameters:

backingStore - BackingStore instance

key - stored data identifier

value - data to be stored

isNew - See BackingStore.save(java.io.Serializable, java.io.Serializable, boolean)

Returns:

See BackingStore.save(java.io.Serializable, java.io.Serializable, boolean)

removeFrom

public static <K extends Serializable,
V extends Serializable>
void removeFrom(BackingStore<K,V> backingStore,
 K key)

Helper method that avoids the need for exception handling boilerplate code when removing data from a BackingStore instance. The original checked BackingStoreException is wrapped into a new unchecked HighAvailabilityProviderException.

Type Parameters:

K - backing store key parameter type

V - backing store data parameter type

Parameters:

backingStore - BackingStore instance

key - stored data identifier

close

public static void close(BackingStore<?,?> backingStore)

Helper method that avoids the need for exception handling boilerplate code when closing a BackingStore instance. The original checked BackingStoreException is wrapped into a new unchecked HighAvailabilityProviderException.

Parameters:

backingStore - BackingStore instance

destroy

public static void destroy(BackingStore<?,?> backingStore)

Helper method that avoids the need for exception handling boilerplate code when destroying a BackingStore instance. The original checked BackingStoreException is wrapped into a new unchecked HighAvailabilityProviderException.

Parameters:

backingStore - BackingStore instance

removeExpired

public static <K extends Serializable> void removeExpired(BackingStore<K,?> backingStore)

Helper method that avoids the need for exception handling boilerplate code when destroying a BackingStore instance. The original checked BackingStoreException is wrapped into a new unchecked HighAvailabilityProviderException.

Parameters:

backingStore - BackingStore instance