Factory.java

/*******************************************************************************
 * Copyright (c) 2011, 2014 Wind River Systems, Inc. and others. All rights reserved.
 * This program and the accompanying materials are made available under the terms
 * of the Eclipse Public License v1.0 which accompanies this distribution, and is
 * available at http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 * Wind River Systems - initial API and implementation
 *******************************************************************************/
package org.eclipse.tcf.te.runtime.model.factory;

import org.eclipse.core.runtime.Assert;
import org.eclipse.core.runtime.PlatformObject;
import org.eclipse.tcf.te.runtime.model.interfaces.IModelNode;
import org.eclipse.tcf.te.runtime.model.interfaces.factory.IFactory;
import org.eclipse.tcf.te.runtime.model.interfaces.factory.IFactoryDelegate;
import org.eclipse.tcf.te.runtime.model.interfaces.factory.IFactoryDelegate2;
import org.eclipse.tcf.te.runtime.model.internal.factory.FactoryDelegateManager;

/**
 * Model node factory implementation.
 */
public final class Factory extends PlatformObject implements IFactory {
	private final FactoryDelegateManager manager = new FactoryDelegateManager();

	/*
	 * Thread save singleton instance creation.
	 */
	private static class LazyInstance {
		public static Factory instance = new Factory();
	}

	/**
	 * Returns the singleton instance of the service manager.
	 */
	public static Factory getInstance() {
		return LazyInstance.instance;
	}

	/**
	 * Constructor.
	 */
	Factory() {
		super();
	}

	/* (non-Javadoc)
	 * @see org.eclipse.tcf.te.runtime.model.interfaces.factory.IFactory#newInstance(java.lang.Class)
	 */
	@Override
	public <V extends IModelNode> V newInstance(Class<V> nodeInterface) {
		Assert.isNotNull(nodeInterface);

		// Determine the model node factory delegate to use
		IFactoryDelegate delegate = manager.getFactoryDelegate(nodeInterface);
		// Return the model node instance
		return delegate != null ? (V) delegate.newInstance(nodeInterface) : null;
	}

	/* (non-Javadoc)
	 * @see org.eclipse.tcf.te.runtime.model.interfaces.factory.IFactory#newInstance(java.lang.Class, java.lang.Object[])
	 */
	@Override
	public <V extends IModelNode> V newInstance(Class<V> nodeInterface, Object[] args) {
		Assert.isNotNull(nodeInterface);

		// Determine the model node factory delegate to use
		IFactoryDelegate delegate = manager.getFactoryDelegate(nodeInterface);
		// Return the model node instance
		return delegate instanceof IFactoryDelegate2 ? (V) ((IFactoryDelegate2)delegate).newInstance(nodeInterface, args) : null;
	}
}