Package de.iip_ecosphere.platform.support.plugins

Class SingletonPlugin<T>

java.lang.Object

de.iip_ecosphere.platform.support.plugins.Plugin<T>

de.iip_ecosphere.platform.support.plugins.SingletonPlugin<T>

Type Parameters:

T - the type of the implementing class

public class SingletonPlugin<T>
extends Plugin<T>

Represents a singleton plugin, i.e., a plugin holds and returns a singleton instance.

Author:

Holger Eichelberger, SSE

Field Summary

Fields

Modifier and Type	Field	Description
private T	instance

Constructor Summary

Constructors

Constructor	Description
SingletonPlugin(String id, List<String> ids, Class<T> instanceCls, Function<Plugin<T>,T> creator, File installDir)	Creates a plugin instance.

Method Summary

Modifier and Type	Method	Description
T	getInstance()	Returns the implementing class.

Methods inherited from class de.iip_ecosphere.platform.support.plugins.Plugin

cleanup, getAllIds, getFurtherIds, getId, getInstallDir, getInstanceClass

Methods inherited from class java.lang.Object

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

Field Details

instance

private T instance

Constructor Details

SingletonPlugin

public SingletonPlugin(String id,
 List<String> ids,
 Class<T> instanceCls,
 Function<Plugin<T>,T> creator,
 File installDir)

Creates a plugin instance.

Parameters:

id - the primary plugin id

ids - further (optional) ids, may be empty or null

instanceCls - the instance class

creator - the creator supplier

installDir - the installation directory, may be null

Method Details

getInstance

public T getInstance()

Returns the implementing class.

Overrides:

getInstance in class Plugin<T>

Returns:

the implementing class