Copyright (c) 2003, 2008 IBM Corporation and others.
This program and the accompanying materials
are made available under the terms of the Eclipse Public License 2.0
which accompanies this distribution, and is available at
https://www.eclipse.org/legal/epl-2.0/
SPDX-License-Identifier: EPL-2.0
Contributors:
    IBM Corporation - initial API and implementation
/*******************************************************************************
 * Copyright (c) 2003, 2008 IBM Corporation and others.
 *
 * This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License 2.0
 * which accompanies this distribution, and is available at
 * https://www.eclipse.org/legal/epl-2.0/
 *
 * SPDX-License-Identifier: EPL-2.0
 *
 * Contributors:
 *     IBM Corporation - initial API and implementation
 *******************************************************************************/
package org.eclipse.core.runtime;

Registry change events describe changes to the extension registry.

This interface can be used without OSGi running.

This interface is not intended to be implemented by clients.

See Also:
IExtensionRegistry
IRegistryChangeListener
Since:
3.0
@noimplement
This interface is not intended to be implemented by clients./**
 * Registry change events describe changes to the extension registry.
 * <p>
 * This interface can be used without OSGi running.
 * </p><p>
 * This interface is not intended to be implemented by clients.
 * </p>
 * @since 3.0
 * @see IExtensionRegistry
 * @see IRegistryChangeListener
 * @noimplement This interface is not intended to be implemented by clients.
 */
public interface IRegistryChangeEvent {
	
Returns all extension deltas for all hosts. Returns an empty array if there are
no deltas in this event.
Returns:
 all extension deltas/**
	 * Returns all extension deltas for all hosts. Returns an empty array if there are
	 * no deltas in this event.
	 *
	 * @return  all extension deltas
	 */
	public IExtensionDelta[] getExtensionDeltas();

	
Returns all extension deltas for the given namespace. Returns an empty array if there are
no deltas in this event for any extension points provided in the given namespace.
Params:
namespace – the namespace for the extension deltas
Returns:
all extension deltas for the given namespace/**
	 * Returns all extension deltas for the given namespace. Returns an empty array if there are
	 * no deltas in this event for any extension points provided in the given namespace.
	 *
	 * @param namespace the namespace for the extension deltas
	 * @return all extension deltas for the given namespace
	 */
	public IExtensionDelta[] getExtensionDeltas(String namespace);

	
Returns all the extension deltas for the given namespace and extension point. Returns an
empty array if there are no deltas in this event for the given extension point.
Params:
namespace – the namespace for the extension point
extensionPoint – the simple identifier of the
	extension point (e.g. "builders")
Returns:
all extension deltas for the given extension point/**
	 * Returns all the extension deltas for the given namespace and extension point. Returns an
	 * empty array if there are no deltas in this event for the given extension point.
	 *
	 * @param namespace the namespace for the extension point
	 * @param extensionPoint the simple identifier of the
	 * 	extension point (e.g. <code>"builders"</code>)
	 * @return all extension deltas for the given extension point
	 */
	public IExtensionDelta[] getExtensionDeltas(String namespace, String extensionPoint);

	
Returns the delta for the given namespace, extension point and extension.
Returns null if none exists in this event.
Params:
namespace – the namespace for the extension point
extensionPoint – the simple identifier of the
	extension point (e.g. "builders")
extension – the unique identifier of the extension
Returns:
the extension delta, or null/**
	 * Returns the delta for the given namespace, extension point and extension.
	 * Returns <code>null</code> if none exists in this event.
	 *
	 * @param namespace the namespace for the extension point
	 * @param extensionPoint the simple identifier of the
	 * 	extension point (e.g. <code>"builders"</code>)
	 * @param extension the unique identifier of the extension
	 * @return the extension delta, or <code>null</code>
	 */
	public IExtensionDelta getExtensionDelta(String namespace, String extensionPoint, String extension);
}