org.rhq.core.pc.plugin
Class PluginLifecycleListenerManagerImpl

java.lang.Object
  org.rhq.core.pc.plugin.PluginLifecycleListenerManagerImpl

All Implemented Interfaces:

PluginLifecycleListenerManager

public class PluginLifecycleListenerManagerImpl
extends Object
implements PluginLifecycleListenerManager

Constructor Summary

PluginLifecycleListenerManagerImpl()

Method Summary

PluginLifecycleListener	getListener(String pluginName) Retrieves the cached listener for the specified plugin.
PluginLifecycleListener	loadListener(PluginDescriptor pluginDescriptor, PluginEnvironment pluginEnvironment) Loads and instantiates the listener class.
void	setListener(String pluginName, PluginLifecycleListener listener) Caches the listener for the specified plugin.
void	shutdown() Clears and destroys the cache of listeners

Methods inherited from class java.lang.Object

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

Constructor Detail

PluginLifecycleListenerManagerImpl

public PluginLifecycleListenerManagerImpl()

Method Detail

loadListener

public PluginLifecycleListener loadListener(PluginDescriptor pluginDescriptor,
                                            PluginEnvironment pluginEnvironment)
                                     throws PluginContainerException

Description copied from interface: PluginLifecycleListenerManager

Loads and instantiates the listener class.

Specified by:

loadListener in interface PluginLifecycleListenerManager

Parameters:

pluginDescriptor - The parsed plugin descriptor

pluginEnvironment - The plugin environment which is needed to perform the class loading

Returns:

An instance of the listener class or null if there is no listener

Throws:

PluginContainerException - if there is an error instantiating the listener class

getListener

public PluginLifecycleListener getListener(String pluginName)

Description copied from interface: PluginLifecycleListenerManager

Retrieves the cached listener for the specified plugin.

Specified by:

getListener in interface PluginLifecycleListenerManager

Parameters:

pluginName - The name of the plugin

Returns:

The cached listener object or null if the plugin has not declared a listener or if the listener has not yet been loaded.

setListener

public void setListener(String pluginName,
                        PluginLifecycleListener listener)

Description copied from interface: PluginLifecycleListenerManager

Caches the listener for the specified plugin. Listeners should be cached only after having been successfully initialized.

Specified by:

setListener in interface PluginLifecycleListenerManager

Parameters:

pluginName - The name of the plugin

listener - The initialized plugin lifecycle listener

shutdown

public void shutdown()

Description copied from interface: PluginLifecycleListenerManager

Clears and destroys the cache of listeners

Specified by:

shutdown in interface PluginLifecycleListenerManager