| /******************************************************************************* |
| * Copyright (c) 2003, 2010 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| * Rob Harrop - SpringSource Inc. (bug 247522) |
| *******************************************************************************/ |
| package org.eclipse.osgi.internal.resolver; |
| |
| import java.util.*; |
| import org.eclipse.osgi.service.resolver.*; |
| import org.osgi.framework.BundleException; |
| |
| /** |
| * This implementation of State does a bookkeeping of all added/removed |
| */ |
| public class UserState extends StateImpl { |
| // TODO this is not an accurate way to record updates |
| private final Set<String> updated = Collections.synchronizedSet(new HashSet<String>()); |
| |
| @Override |
| public boolean removeBundle(BundleDescription description) { |
| if (description.getLocation() != null) |
| updated.remove(description.getLocation()); |
| if (!super.removeBundle(description)) |
| return false; |
| return true; |
| } |
| |
| @Override |
| public boolean updateBundle(BundleDescription newDescription) { |
| if (!super.updateBundle(newDescription)) |
| return false; |
| updated.add(newDescription.getLocation()); |
| return true; |
| } |
| |
| /** |
| * @throws BundleException |
| */ |
| public StateDelta compare(State baseState) throws BundleException { |
| BundleDescription[] currentBundles = this.getBundles(); |
| StateDeltaImpl delta = new StateDeltaImpl(this); |
| // process additions and updates |
| for (BundleDescription current : currentBundles) { |
| BundleDescription existing = baseState.getBundleByLocation(current.getLocation()); |
| if (existing == null) { |
| delta.recordBundleAdded((BundleDescriptionImpl) current); |
| } else if (updated.contains(current.getLocation())) { |
| delta.recordBundleUpdated((BundleDescriptionImpl) current); |
| } |
| } |
| // process removals |
| BundleDescription[] existingBundles = baseState.getBundles(); |
| for (BundleDescription existing : existingBundles) { |
| BundleDescription local = getBundleByLocation(existing.getLocation()); |
| if (local == null) { |
| delta.recordBundleRemoved((BundleDescriptionImpl) existing); |
| } |
| } |
| return delta; |
| } |
| } |