BusinessObjectSelectionExpressionAdapterFactory.java

/**
 * Copyright (c) 2004-2025 Carnegie Mellon University and others. (see Contributors file). 
 * All Rights Reserved.
 * 
 * NO WARRANTY. ALL MATERIAL IS FURNISHED ON AN "AS-IS" BASIS. CARNEGIE MELLON UNIVERSITY MAKES NO WARRANTIES OF ANY
 * KIND, EITHER EXPRESSED OR IMPLIED, AS TO ANY MATTER INCLUDING, BUT NOT LIMITED TO, WARRANTY OF FITNESS FOR PURPOSE
 * OR MERCHANTABILITY, EXCLUSIVITY, OR RESULTS OBTAINED FROM USE OF THE MATERIAL. CARNEGIE MELLON UNIVERSITY DOES NOT
 * MAKE ANY WARRANTY OF ANY KIND WITH RESPECT TO FREEDOM FROM PATENT, TRADEMARK, OR COPYRIGHT INFRINGEMENT.
 * 
 * This program and the accompanying materials are made available under the terms of the Eclipse Public License 2.0
 * which is available at https://www.eclipse.org/legal/epl-2.0/
 * SPDX-License-Identifier: EPL-2.0
 * 
 * Created, in part, with funding and support from the United States Government. (see Acknowledgments file).
 * 
 * This program includes and/or can make use of certain third party source code, object code, documentation and other
 * files ("Third Party Software"). The Third Party Software that is used by this program is dependent upon your system
 * configuration. By using this program, You agree to comply with any and all relevant Third Party Software terms and
 * conditions contained in any such Third Party Software or separate license file distributed with such Third Party
 * Software. The parties who own the Third Party Software ("Third Party Licensors") are intended third party benefici-
 * aries to this license with respect to the terms applicable to their Third Party Software. Third Party Software li-
 * censes only apply to the Third Party Software and not any other portion of this program or this program as a whole.
 */
package org.osate.ge.internal;

import org.eclipse.core.expressions.ICountable;
import org.eclipse.core.expressions.IIterable;
import org.eclipse.core.runtime.IAdapterFactory;
import org.osate.ge.BusinessObjectSelection;

/**
 * Adapter factory that allows BusinessObjectSelection objects to be adapted to interfaces which will allow counting and iterating in the Eclipse expressions.
 *
 */
public class BusinessObjectSelectionExpressionAdapterFactory implements IAdapterFactory {
	@Override
	public <T> T getAdapter(final Object adaptableObject, final Class<T> adapterType) {
		final BusinessObjectSelection bos = (BusinessObjectSelection) adaptableObject;

		if (ICountable.class.equals(adapterType)) {
			return adapterType.cast((ICountable) () -> (int)bos.bocStream().count());
		} else if (IIterable.class.equals(adapterType)) {
			return adapterType.cast((IIterable<?>) () -> bos.boStream(Object.class).iterator());
		}

		return null;
	}

	@Override
	public Class<?>[] getAdapterList() {
		return new Class[] { ICountable.class, IIterable.class };
	}

}