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diff --git a/bundles/org.eclipse.equinox.p2.director/src/org/eclipse/equinox/internal/provisional/p2/director/IDirector.java b/bundles/org.eclipse.equinox.p2.director/src/org/eclipse/equinox/internal/provisional/p2/director/IDirector.java
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+++ b/bundles/org.eclipse.equinox.p2.director/src/org/eclipse/equinox/internal/provisional/p2/director/IDirector.java
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+/*******************************************************************************
+ *  Copyright (c) 2007, 2010 IBM Corporation 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:
+ *     IBM Corporation - initial API and implementation
+ *******************************************************************************/
+package org.eclipse.equinox.internal.provisional.p2.director;
+
+import org.eclipse.core.runtime.IProgressMonitor;
+import org.eclipse.core.runtime.IStatus;
+import org.eclipse.equinox.p2.engine.IProfile;
+import org.eclipse.equinox.p2.engine.ProvisioningContext;
+import org.eclipse.equinox.p2.planner.IProfileChangeRequest;
+
+/**
+ * Directors are responsible for determining what should be done to a given 
+ * profile to reshape it as requested. That is, given the current state of a 
+ * profile, a description of the desired end state of that profile and metadata 
+ * describing the available IUs, a director produces a list of provisioning 
+ * operations (e.g., install, update or uninstall) to perform on the related IUs. 
+ * Directors are also able to validate profiles and assist in the diagnosis of 
+ * configuration errors. Note that directors may range in complexity from 
+ * very simple (e.g., reading a list of bundles from a static file) to very complex. 
+ */
+public interface IDirector {
+
+	/**
+	 * Service name constant for the director service.
+	 */
+	public static final String SERVICE_NAME = IDirector.class.getName();
+
+	/**
+	 * performs the change request with the given context.
+	 * 
+	 * @param profileChangeRequest The change request
+	 * @param context The provisioning context used for finding resources
+	 * @param monitor a progress monitor, or <code>null</code> if progress
+	 *    reporting is not desired
+	 */
+	public IStatus provision(IProfileChangeRequest profileChangeRequest, ProvisioningContext context, IProgressMonitor monitor);
+
+	/**
+	 * Reverts the profile to a previous state described in the target revertProfile.
+	 * 
+	 * @param profile The profile to revert
+	 * @param revertProfile The profile snapshot state to revert to
+	 * @param context The provisioning context used for finding resources
+	 * @param monitor a progress monitor, or <code>null</code> if progress
+	 *    reporting is not desired
+	 */
+	public IStatus revert(IProfile profile, IProfile revertProfile, ProvisioningContext context, IProgressMonitor monitor);
+}