org.springframework.plugin.core

Class PluginRegistrySupport<T extends Plugin<S>,S>

java.lang.Object

org.springframework.plugin.core.PluginRegistrySupport<T,S>

All Implemented Interfaces:

java.lang.Iterable<T>, PluginRegistry<T,S>

Direct Known Subclasses:

SimplePluginRegistry

public abstract class PluginRegistrySupport<T extends Plugin<S>,S>
extends java.lang.Object
implements PluginRegistry<T,S>, java.lang.Iterable<T>

Base class for PluginRegistry implementations. Implements an initialization mechanism triggered on forst invocation of getPlugins().

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	initialized
private java.util.List<T>	plugins

Constructor Summary

Constructors

Constructor and Description
PluginRegistrySupport(java.util.List<? extends T> plugins) Creates a new PluginRegistrySupport instance using the given plugins.

Method Summary

Modifier and Type	Method and Description
java.util.List<T>	getPlugins() Returns all registered plugins.
protected java.util.List<T>	initialize(java.util.List<T> plugins) Callback to initialize the plugin List.
java.util.Iterator<T>	iterator()

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.plugin.core.PluginRegistry

contains, countPlugins, getPluginFor, getPluginFor, getPluginFor, getPluginsFor, getPluginsFor, getPluginsFor, hasPluginFor

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

plugins

private java.util.List<T extends Plugin<S>> plugins

initialized

private boolean initialized

Constructor Detail

PluginRegistrySupport

public PluginRegistrySupport(java.util.List<? extends T> plugins)

Creates a new PluginRegistrySupport instance using the given plugins.

Parameters:

plugins - must not be null.

Method Detail

getPlugins

public java.util.List<T> getPlugins()

Returns all registered plugins. Only use this method if you really need to access all plugins. For distinguished access to certain plugins favour accessor methods like {link #getPluginFor} over this one. This method should only be used for testing purposes to check registry configuration.

Specified by:

getPlugins in interface PluginRegistry<T extends Plugin<S>,S>

Returns:

all plugins of the registry

initialize

protected java.util.List<T> initialize(java.util.List<T> plugins)

Callback to initialize the plugin List. Will create a defensive copy of the List to potentially unwrap a List proxy. Will filter null values from the source list as well.

Parameters:

plugins - must not be null.

Returns:

iterator

public java.util.Iterator<T> iterator()

Specified by:

iterator in interface java.lang.Iterable<T extends Plugin<S>>