| /******************************************************************************* |
| * Copyright (c) 2007, 2008 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 java.net.URL; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| import org.eclipse.core.runtime.IStatus; |
| import org.eclipse.equinox.internal.provisional.p2.engine.IProfile; |
| import org.eclipse.equinox.internal.provisional.p2.engine.ProvisioningContext; |
| import org.eclipse.equinox.internal.provisional.p2.metadata.IInstallableUnit; |
| |
| /** |
| * 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 { |
| |
| /** |
| * 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(ProfileChangeRequest profileChangeRequest, ProvisioningContext context, IProgressMonitor monitor); |
| |
| /** |
| * Reverts the profile to a previous state described in the give InstallableUnit. |
| * |
| * @param previous The installable unit that describes the previous state of the profile |
| * @param profile The profile to revert |
| * @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(IInstallableUnit previous, IProfile profile, ProvisioningContext context, IProgressMonitor monitor); |
| |
| /** |
| * Returns the location of the director's rollback repository, where information about |
| * previous profile states is stored. |
| */ |
| public URL getRollbackRepositoryLocation(); |
| } |