pt.lsts.neptus.plugins

Class ExtensionsBag

java.lang.Object

pt.lsts.neptus.plugins.ExtensionsBag

public class ExtensionsBag
extends java.lang.Object

This class is used to store and instantiate implementations of different extension types

Author:

zp

Constructor Summary

Constructors

Constructor and Description
ExtensionsBag(java.lang.Class<?>... extensionTypes) Create a new bag that will hold extensions of given types

Method Summary

Modifier and Type	Method and Description
void	addPlugin(java.lang.String className) Given a class name, will inspect it and extract all valid extension types
<T> T	getPlugin(java.lang.String name, java.lang.Class<T> type, java.lang.Object... initParams) Instantiates a plugin gicen extension type, name and initialization arguments
<T> java.util.LinkedHashMap<java.lang.String,java.lang.Class<? extends T>>	listExtensions(java.lang.Class<T> type) Retrieves a list of classes implementing the given extension type

Methods inherited from class java.lang.Object

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

Constructor Detail

ExtensionsBag

public ExtensionsBag(java.lang.Class<?>... extensionTypes)

Create a new bag that will hold extensions of given types

Parameters:

extensionTypes - The types to be stored in this bag

Method Detail

addPlugin

public void addPlugin(java.lang.String className)

Given a class name, will inspect it and extract all valid extension types

Parameters:

className - The class to be inspected (will not be initialized at this time)

listExtensions

public <T> java.util.LinkedHashMap<java.lang.String,java.lang.Class<? extends T>> listExtensions(java.lang.Class<T> type)

Retrieves a list of classes implementing the given extension type

Parameters:

type - The extension type of interest

Returns:

A map from plugin names to respective classes

getPlugin

public <T> T getPlugin(java.lang.String name,
                       java.lang.Class<T> type,
                       java.lang.Object... initParams)

Instantiates a plugin gicen extension type, name and initialization arguments

Parameters:

name - The name of the plugin to instantiate

type - The extension type

initParams - The initialization arguments if applicable

Returns:

The initialized plugin or null if an error occurs