org.eclipse.emf.emfstore.internal.common

Class ExtensionRegistry

java.lang.Object

org.eclipse.emf.emfstore.internal.common.ExtensionRegistry

public final class ExtensionRegistry
extends Object

The extension registry may be used as simple replacement for the extension point mechanism in case one does not want to expose internal types. It is capable of retrieving actual extension point information, but currently does not support contributing such.

Author:

emueller

Field Summary

Fields

Modifier and Type	Field and Description
static ExtensionRegistry	INSTANCE The singleton instance.

Method Summary

Modifier and Type	Method and Description
<T> T	get(String id, Class<T> clazz) Returns the requested extension point.
<T> T	get(String id, Class<T> clazz, T defaultInstance, boolean shouldSetDefault) Returns the requested extension point.
void	remove(String id) Remove the extension with the given ID.
<T> void	set(String id, T t) Set the extension.

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final ExtensionRegistry INSTANCE

The singleton instance.

Method Detail

get

public <T> T get(String id,
                 Class<T> clazz,
                 T defaultInstance,
                 boolean shouldSetDefault)

Returns the requested extension point.

Type Parameters:

T - the expected type

Parameters:

id - the ID of the extension point to be returned

clazz - the expected type

defaultInstance - a default instance to be returned in case no extension point has been found

shouldSetDefault - whether the default instance should be registered

Returns:

the requested extension which might be the default instance specified

get

public <T> T get(String id,
                 Class<T> clazz)

Returns the requested extension point.

Type Parameters:

T - the expected type

Parameters:

id - the ID of the extension point to be returned

clazz - the expected type

Returns:

the requested extension which might be the default instance specified

set

public <T> void set(String id,
                    T t)

Set the extension.

Type Parameters:

T - the type of the extension to be set

Parameters:

id - the ID of the extension point to be returned

t - the extension to be set

remove

public void remove(String id)

Remove the extension with the given ID.

Parameters:

id - the ID of the extension to be removed