org.eclipse.core.internal.registry.RegistryDelta Maven / Gradle / Ivy

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AspectJ tools most notably contains the AspectJ compiler (AJC). AJC applies aspects to Java classes during compilation, fully replacing Javac for plain Java classes and also compiling native AspectJ or annotation-based @AspectJ syntax. Furthermore, AJC can weave aspects into existing class files in a post-compile binary weaving step. This library is a superset of AspectJ weaver and hence also of AspectJ runtime.

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/*******************************************************************************
 * Copyright (c) 2000, 2006 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.internal.registry;

import java.util.*;
import org.eclipse.core.runtime.IExtension;
import org.eclipse.core.runtime.IExtensionDelta;

/**
 * The extension deltas are grouped by namespace. There is one registry delta by namespace.
 */
public class RegistryDelta {
	private final Set extensionDeltas = new HashSet<>(); //the extension deltas (each element indicate the type of the delta)
	private IObjectManager objectManager; //The object manager from which all the objects contained in the deltas will be found.

	RegistryDelta() {
		//Nothing to do
	}

	public int getExtensionDeltasCount() {
		return extensionDeltas.size();
	}

	public IExtensionDelta[] getExtensionDeltas() {
		return extensionDeltas.toArray(new ExtensionDelta[extensionDeltas.size()]);
	}

	public IExtensionDelta[] getExtensionDeltas(String extensionPoint) {
		Collection selectedExtDeltas = new LinkedList<>();
		for (IExtensionDelta extensionDelta : extensionDeltas) {
			if (extensionDelta.getExtension().getExtensionPointUniqueIdentifier().equals(extensionPoint))
				selectedExtDeltas.add(extensionDelta);
		}
		return selectedExtDeltas.toArray(new IExtensionDelta[selectedExtDeltas.size()]);
	}

	/**
	 * @param extensionPointId
	 * @param extensionId must not be null
	 */
	public IExtensionDelta getExtensionDelta(String extensionPointId, String extensionId) {
		for (IExtensionDelta extensionDelta : extensionDeltas) {
			IExtension extension = extensionDelta.getExtension();
			if (extension.getExtensionPointUniqueIdentifier().equals(extensionPointId) && extension.getUniqueIdentifier() != null && extension.getUniqueIdentifier().equals(extensionId))
				return extensionDelta;
		}
		return null;
	}

	void addExtensionDelta(IExtensionDelta extensionDelta) {
		this.extensionDeltas.add(extensionDelta);
		((ExtensionDelta) extensionDelta).setContainingDelta(this);
	}

	@Override
	public String toString() {
		return "\n\tHost " + ": " + extensionDeltas; //$NON-NLS-1$//$NON-NLS-2$
	}

	void setObjectManager(IObjectManager objectManager) {
		this.objectManager = objectManager;
		//TODO May want to add into the existing one here... if it is possible to have batching
	}

	public IObjectManager getObjectManager() {
		return objectManager;
	}
}