com.aquenos.cassandra.pvarchiver.server.controlsystem

Class ControlSystemSupportRegistryBean

java.lang.Object

com.aquenos.cassandra.pvarchiver.server.controlsystem.ControlSystemSupportRegistryBean

All Implemented Interfaces:

ControlSystemSupportRegistry, Aware, DisposableBean, SmartInitializingSingleton, EnvironmentAware

public class ControlSystemSupportRegistryBean
extends Object
implements ControlSystemSupportRegistry, DisposableBean, EnvironmentAware, SmartInitializingSingleton

Implementation of a ControlSystemSupportRegistry that can be used as a Spring bean. This implementation automatically discovers control-system supports on the class-path using the discovery mechanism provided by FactoriesLoader in order to find implementations of ControlSystemSupportFactory.

Author:

Sebastian Marsching

Field Summary

Fields

Modifier and Type	Field and Description
protected org.apache.commons.logging.Log	logger Logger for this class.

Constructor Summary

Constructors

Constructor and Description
ControlSystemSupportRegistryBean()

Method Summary

Modifier and Type	Method and Description
void	afterSingletonsInstantiated()
void	destroy()
ControlSystemSupport<?>	getControlSystemSupport(String id) Returns the control-system support with the specified identifier.
Collection<? extends ControlSystemSupport<?>>	getControlSystemSupports() Returns all control-system support modules registered with this registry.
boolean	isAvailable() Tells whether the registry is available (has been initialized and not destroyed yet).
void	setCassandraProvider(CassandraProvider cassandraProvider) Sets the Cassandra provider that provides access to the Apache Cassandra database.
void	setEnvironment(Environment environment)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

protected final org.apache.commons.logging.Log logger

Logger for this class.

Constructor Detail

ControlSystemSupportRegistryBean

public ControlSystemSupportRegistryBean()

Method Detail

afterSingletonsInstantiated

public void afterSingletonsInstantiated()

Specified by:

afterSingletonsInstantiated in interface SmartInitializingSingleton

destroy

public void destroy()
             throws Exception

Specified by:

destroy in interface DisposableBean

Throws:

Exception

setCassandraProvider

public void setCassandraProvider(CassandraProvider cassandraProvider)

Sets the Cassandra provider that provides access to the Apache Cassandra database. Typically, this should be initialized with a Cassandra provider that provides a throttled session.

Parameters:

cassandraProvider - provider that provides a connection to the Apache Cassandra database.

setEnvironment

public void setEnvironment(Environment environment)

Specified by:

setEnvironment in interface EnvironmentAware

isAvailable

public boolean isAvailable()

Description copied from interface: ControlSystemSupportRegistry

Tells whether the registry is available (has been initialized and not destroyed yet). Even if the registry is not available, its method can be called safely. However, it typically will not be able to provide any control-system supports unless it is available.

Specified by:

isAvailable in interface ControlSystemSupportRegistry

Returns:

true if the registry is ready to provide control-system supports, false otherwise.

getControlSystemSupport

public ControlSystemSupport<?> getControlSystemSupport(String id)

Description copied from interface: ControlSystemSupportRegistry

Returns the control-system support with the specified identifier. The identifier is the one returned by the ControlSystemSupport.getId() method.

Specified by:

getControlSystemSupport in interface ControlSystemSupportRegistry

Parameters:

id - identifier of the control-system support module.

Returns:

the requested control-system support module or null if the requested module has not been registered with this registry.

getControlSystemSupports

public Collection<? extends ControlSystemSupport<?>> getControlSystemSupports()

Description copied from interface: ControlSystemSupportRegistry

Returns all control-system support modules registered with this registry. For example, this can be used to present a list of supported control systems to the user.

Specified by:

getControlSystemSupports in interface ControlSystemSupportRegistry

Returns:

list of control-system support modules that have been registered with this registry. Might be empty, but is never null.