/*

* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of the License "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description: 

*

*/

package com.nokia.sdt.emf.dm;

import org.osgi.framework.Version;

	/**

	 * Information about a changed or missing component

	 */

public class ComponentManifestDelta {

	// Can't use enum here because EMF < 2.3 will not handle it

	public static final int NEWER = 0;   // current component is newer than manifest

	public static final int OLDER = 1;   // current component is older than manifest

	public static final int MISSING = 2; // component is not present

	private String componentID;

	private int type;

	private Version oldVersion;

	private Version newVersion;

	/**

	 * Creates a NEWER/OLDER delta

	 */

	public ComponentManifestDelta(String componentID,

			int type,

			Version oldVersion, Version newVersion) {

		checkType(type);

		this.componentID = componentID;

		this.type = type;

		this.oldVersion = oldVersion;

		this.newVersion = newVersion;

	}

	public String getComponentID() {

		return componentID;

	}

	public int getType() {

		return type;

	}

	public Version getNewVersion() {

		return newVersion;

	}

	public Version getOldVersion() {

		return oldVersion;

	}

	void checkType(int type) {

		switch (type) {

		case NEWER:

		case OLDER:

		case MISSING:

			break;

		default:

			throw new IllegalArgumentException();

		}

	}

}