java.lang.Object
- org.java.plugin.standard.PluginLifecycleHandler
- - org.java.plugin.standard.StandardPluginLifecycleHandler

```
public class StandardPluginLifecycleHandler
extends PluginLifecycleHandler
```
Standard implementation of plug-in life cycle handler.
Configuration parameters

This life cycle handler implementation supports following configuration parameters:

probeParentLoaderLast

If true, plug-in classloader will try loading classes from system (boot) classpath after trying to load them from plug-in classpath. Otherwise system classpath will be used first. Default value is false that corresponds to standard delegation model for classloaders hierarchy that corresponds to JLS.

stickySynchronizing

Allows advanced configuring of classloaders synchronization in multy-threaded environment. If true then class loading will be synchronized with initial plug-in classloader instance. Otherwise this instance will be used as synchronizing monitor. Default value is false.

localClassLoadingOptimization

If true then plug-in classloader will collect local packages statistics to predict class location. This allow to optimize class look-up procedure for classes that belong to the requested plug-in. Default value is true.

foreignClassLoadingOptimization

If true then plug-in classloader will collect statistics for "foreign" classes - those which belong to depending plug-ins. This allow to optimize class look-up procedure when enumerating depending plug-ins. Default value is true.

Version:

$Id: StandardPluginLifecycleHandler.java,v 1.5 2007/04/07 12:39:50 ddimon Exp $

Constructor Summary

Constructors
Constructor Description

StandardPluginLifecycleHandler()

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected void`	`afterPluginStop(Plugin plugin)`	This method does nothing in this implementation.
`protected void`	`beforePluginStart(Plugin plugin)`	This method does nothing in this implementation.
`void`	`configure(ExtendedProperties config)`	Configures this handler instance.
`protected PluginClassLoader`	`createPluginClassLoader(PluginDescriptor descr)`	Creates standard implementation of plug-in class loader.
`protected Plugin`	`createPluginInstance(PluginDescriptor descr)`	Creates instance of plug-in class calling it's default (no-arguments) constructor.
`protected void`	`dispose()`	This method does nothing in this implementation.

Methods inherited from class org.java.plugin.standard.PluginLifecycleHandler
getPluginManager, init

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - StandardPluginLifecycleHandler
```
public StandardPluginLifecycleHandler()
```
- Method Detail
  - createPluginClassLoader
```
protected PluginClassLoader createPluginClassLoader(PluginDescriptor descr)
```
    Creates standard implementation of plug-in class loader.
    
    Specified by:
    
    createPluginClassLoader in class PluginLifecycleHandler
    
    Parameters:
    
    descr - plug-in descriptor
    
    Returns:
    
    class loader instance for given plug-in
    
    See Also:
    
    PluginLifecycleHandler.createPluginClassLoader( org.java.plugin.registry.PluginDescriptor)
  - createPluginInstance
```
protected Plugin createPluginInstance(PluginDescriptor descr)
                               throws PluginLifecycleException
```
    Creates instance of plug-in class calling it's default (no-arguments) constructor. Class look-up is done with plug-in's class loader.
    
    Specified by:
    
    createPluginInstance in class PluginLifecycleHandler
    
    Parameters:
    
    descr - plug-in descriptor
    
    Returns:
    
    new not initialized instance of plug-in class
    
    Throws:
    
    PluginLifecycleException - if plug-in class can't be instantiated for some reason
    
    See Also:
    
    PluginLifecycleHandler.createPluginInstance( org.java.plugin.registry.PluginDescriptor)
  - beforePluginStart
```
protected void beforePluginStart(Plugin plugin)
```
    This method does nothing in this implementation.
    
    Specified by:
    
    beforePluginStart in class PluginLifecycleHandler
    
    Parameters:
    
    plugin - plug-in being starting
    
    See Also:
    
    PluginLifecycleHandler.beforePluginStart( org.java.plugin.Plugin)
  - afterPluginStop
```
protected void afterPluginStop(Plugin plugin)
```
    This method does nothing in this implementation.
    
    Specified by:
    
    afterPluginStop in class PluginLifecycleHandler
    
    Parameters:
    
    plugin - plug-in being stopping
    
    See Also:
    
    PluginLifecycleHandler.afterPluginStop( org.java.plugin.Plugin)
  - dispose
```
protected void dispose()
```
    This method does nothing in this implementation.
    
    Specified by:
    
    dispose in class PluginLifecycleHandler
    
    See Also:
    
    PluginLifecycleHandler.dispose()
  - configure
```
public void configure(ExtendedProperties config)
```
    Description copied from class: PluginLifecycleHandler
    
    Configures this handler instance. Note that this method should be called once before PluginLifecycleHandler.init(PluginManager), usually this is done in object factory implementation.
    
    Specified by:
    
    configure in class PluginLifecycleHandler
    
    Parameters:
    
    config - handler configuration data
    
    See Also:
    
    PluginLifecycleHandler.configure( ExtendedProperties)

Class StandardPluginLifecycleHandler

Constructor Summary

Method Summary

Methods inherited from class org.java.plugin.standard.PluginLifecycleHandler

Methods inherited from class java.lang.Object

Constructor Detail

StandardPluginLifecycleHandler

Method Detail

createPluginClassLoader

createPluginInstance

beforePluginStart

afterPluginStop

dispose

configure