org.jboss.shrinkwrap.impl.base

Class ServiceExtensionLoader

java.lang.Object

org.jboss.shrinkwrap.impl.base.ServiceExtensionLoader

All Implemented Interfaces:

ExtensionLoader

public class ServiceExtensionLoader
extends Object
implements ExtensionLoader

ServiceExtensionLoader

This class is the default strategy to load extensions when an instance of ExtensionLoader is not provided to the ConfigurationBuilder and the ConfigurationBuilder.build() method is invoked. If the ConfigurationBuilder doesn't provide any ClassLoader, ConfigurationBuilder.build() defaults to a one-element collection holding the TCCL. The classLoaders are used to find the provider-configuration file for the extension to be loaded in META-INF/services/. This provider-configuration file is used to make an instance of the SPI implementation and cached in cache.

Version:

$Revision: $

Author:

Aslak Knutsen, Ken Gullaksen

Constructor Summary

Constructors

Constructor and Description
ServiceExtensionLoader(Iterable<ClassLoader> classLoaders) Creates a new instance, using the specified ClassLoaders to create extensions

Method Summary

Modifier and Type	Method and Description
<T extends Assignable> ServiceExtensionLoader	addOverride(Class<T> extensionClass, Class<? extends T> extensionImplClass)
<T extends Archive<T>> ArchiveFormat	getArchiveFormatFromExtensionMapping(Class<T> type)
<T extends Assignable> String	getExtensionFromExtensionMapping(Class<T> type)
boolean	isOverridden(Class<?> extensionClass) Check to see if a specific extension interface is being overloaded
<T extends Assignable> T	load(Class<T> extensionClass, Archive<?> baseArchive)

Methods inherited from class java.lang.Object

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

Constructor Detail

ServiceExtensionLoader

public ServiceExtensionLoader(Iterable<ClassLoader> classLoaders)
                       throws IllegalArgumentException

Creates a new instance, using the specified ClassLoaders to create extensions

Parameters:

classLoaders - The class loaders to be used to load extension implementations

Throws:

IllegalArgumentException - If the ClassLoader is not specified

Method Detail

load

public <T extends Assignable> T load(Class<T> extensionClass,
                                     Archive<?> baseArchive)
                              throws UnknownExtensionTypeException

Specified by:

load in interface ExtensionLoader

Throws:

UnknownExtensionTypeException

See Also:

ExtensionLoader.load(java.lang.Class, org.jboss.shrinkwrap.api.Archive)

addOverride

public <T extends Assignable> ServiceExtensionLoader addOverride(Class<T> extensionClass,
                                                                 Class<? extends T> extensionImplClass)

Specified by:

addOverride in interface ExtensionLoader

See Also:

ExtensionLoader.addOverride(java.lang.Class, java.lang.Class)

getExtensionFromExtensionMapping

public <T extends Assignable> String getExtensionFromExtensionMapping(Class<T> type)

Specified by:

getExtensionFromExtensionMapping in interface ExtensionLoader

See Also:

ExtensionLoader.getExtensionFromExtensionMapping(java.lang.Class)

getArchiveFormatFromExtensionMapping

public <T extends Archive<T>> ArchiveFormat getArchiveFormatFromExtensionMapping(Class<T> type)

Specified by:

getArchiveFormatFromExtensionMapping in interface ExtensionLoader

See Also:

ExtensionLoader.getArchiveFormatFromExtensionMapping(java.lang.Class)

isOverridden

public boolean isOverridden(Class<?> extensionClass)

Check to see if a specific extension interface is being overloaded

Parameters:

extensionClass - The ExtensionType interface class

Returns:

true if found